US3809086A - Wound drainage device - Google Patents

Wound drainage device Download PDF

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Publication number
US3809086A
US3809086A US00206307A US20630771A US3809086A US 3809086 A US3809086 A US 3809086A US 00206307 A US00206307 A US 00206307A US 20630771 A US20630771 A US 20630771A US 3809086 A US3809086 A US 3809086A
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United States
Prior art keywords
chamber
wall
fluid
diaphragm
bottom wall
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Expired - Lifetime
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US00206307A
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English (en)
Inventor
E Schachet
F Deuschle
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Sherwood Medical Co
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Sherwood Medical Industries Inc
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Filing date
Publication date
Priority to BE792506D priority Critical patent/BE792506A/xx
Application filed by Sherwood Medical Industries Inc filed Critical Sherwood Medical Industries Inc
Priority to US00206307A priority patent/US3809086A/en
Priority to CA158,426A priority patent/CA1017642A/en
Priority to GB5684172A priority patent/GB1404959A/en
Priority to FR7243847A priority patent/FR2165934B1/fr
Priority to GB3766074A priority patent/GB1404960A/en
Priority to JP12327972A priority patent/JPS541399B2/ja
Application granted granted Critical
Publication of US3809086A publication Critical patent/US3809086A/en
Priority to CA228,610A priority patent/CA1017644A/en
Assigned to SHERWOOD MEDICAL COMPANY reassignment SHERWOOD MEDICAL COMPANY MERGER (SEE DOCUMENT FOR DETAILS). Assignors: SHERWOOD MEDICAL INDUSTRIES INC. (INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/64—Containers with integrated suction means
    • A61M1/68—Containers incorporating a flexible member creating suction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/64—Containers with integrated suction means
    • A61M1/68—Containers incorporating a flexible member creating suction
    • A61M1/684—Containers incorporating a flexible member creating suction bellows-type

Definitions

  • a portable, wound drainage, suction pump for extracting body fluids from wounds has a substantially rigid 1 vessel, a top plate carrying an actuator member, aresilient diaphragm disposed in the vessel and defining with the lower portion of the vessel an expansible chamber, and an actuating plate on the diaphragm adapted to be urged downwardly by an applied force on the actuator member to move the diaphragm downwardly and evacuate air from the expansible chamber.
  • the diaphragm tends to return to its original position due to theresiliency thereof, and while it is moving to expand the chamber, it produces a negative pressure for drawing fluid into the chamber.
  • Cooperating latching elements are provided to maintain the diaphragm in the evacuated position without manual forces being applied thereto, the pump being unlatched to activate it when it is desired to start the drawing of fluid into the v chamber.
  • Some past drainage devices consisted of a container having pliable side walls and metal springs between top and bottom walls.
  • the side walls were resiliently flexible or made ofresiliently flexible plastic in the form of bellows. Such containers were manually compressed to reduce the volume of the container.
  • Another object is to provide a novel, manually operated, wound drainage device which is extremely convenient in use and which can be readily placed in an operative condition by one person where desired.
  • Another object is to provide a wound drainage device which can be packaged in a sterile condition, reliably connected in operation under aseptic conditions and which can be conveniently and economically disposed of after a single use.
  • a further object is to provide a manually operated wound drainage device having improved activating means, wherein the device can be maintained in an operational condition, ready for use, without requiring continuous manual forces being applied thereto.
  • Still another object is to provide an improved wound drainage device wherein the actuation thereof is positive and is repeatable.
  • Yet another object is to provide a wound drainage device wherein the manual compressive forces required to activate the device are directed to substantially the optimum area of the device for simple manual activation thereof.
  • a wound drainage device which ineludes an expansible chamber having a rigid side wall and a resiliently urged fluid displacement wall movable toward an oppositely facing wall to reduce the volume of the chamber, the displacement member being thereafter movable in a direction away from the facing wall for creating a suction force for drawing fluid into the chamber.
  • a manually operable locking device is arranged to hold a chamber of a wound drainage device in a compressed or evacuated condition, the locking device being releasable to permit expansion of the chamber when desired.
  • FIG. 1 is a front view of a portion of a human body having a wound drainage device in accordance with the present invention attached from a wound;
  • FIG. 2 is an enlarged exploded the drainage device of FIG. 1;
  • FIG. 3 is an enlarged elevational view of the wound thereto for draining fluid perspective view of drainage device of FIG. I;
  • FIG. 4 is an enlarged top plan view of the drainage device of FIG. 1; g FIG. Sis a cross-sectional view of the drainage device taken along the line 5-5 of FIG. 4;
  • FIG. 5a is an enlarged fragmentary sectional view of a peripheral portionshown in FIG. 5;
  • FIG. 6 is a sectional view taken along the line 6-6 of FIG. 4 but with the handle of the device in a raised position;
  • FIG. 7 is a sectional view similar to FIG. 6 but with the device in a cooked position
  • FIG. 8 is a sectional view taken. along line 8-8 of FIG. 7; and b FIG. 9 is a sectional view similar to FIG. 7 but with the device in an operating condition.
  • FIG. 1 there is shown a wound drainage device or suction pump attached to a human body 12 by strap or belt 13, and operatively connected to the interior of a wound 14 by one or more flexible drainage or evacuating tubes, such as a tube 16.
  • tube 16 may be connected in fluid communication with the interior of the wound, for example, by a t or y tube connector such as indicated at 15, and a pair of tube sections 16a and 16b connected between the connector and the wound.
  • the suction device 10 is shown including a vessel 18, a fluid displacement or piston member 20 illustrated as including a piston element shown as a diaphragm or gland member 22 and an actuating or backing plate 24, a cover or top plate member 26, and an actuator member 28.
  • Vessel 18 includes a bottom wall 30, a relatively rigid or noncollapsible peripheral side wall 32 shown integral with bottom wall 30, an inlet port or passage 33, a tube connector 34 connected at passage 33 to the side wall 32 adjacent the bottom wall, such as by cement or a weld, and ar'i-outlet or drain port 35 in the side wall having a drain passage member 36 connected therewith, such as by cement or a weld, and an enclosure cap or sealing plug 37 shown integrally connected with member 36.
  • a pair of likebelt loops 38 (both shown in FIG. 8) are provided for receiving the belt 13 shown in FIG. 1.
  • a continuously extending peripheral groove 39 is provided in the upper edge of the vessel at the top of side wall 32 to receive a peripheral bead 40 on the diaphragm 22, as is more clearly seen in FIG. 5a.
  • the groove 39 is shown formed by a peripheral rim 41 which is L-shaped in cross-section, and the upper edge portion 45 of the side wall 32, the bottom horizontal portion of the L-shaped rim 41 being shown formed integrally connected to the outside of the side wall 32 below the upper edge thereof.
  • the entire vessel 18 is preferably formed of a rigid material such as a relatively hard plastic.
  • the diaphragm 22 is shown formed of a relatively highly flexible and resilient, relatively thin elastic sheet material, such as stretchable rubber or the like.
  • the diaphragm 22 in its relaxed orunstretched condition has a configuration generally complementary to the open end of the vessel 18 and serves as-a membrane closing the vessel. With the bead 40 disposed in the groove 39, as seen in FIG. 5, the diaphragm 22 is in fluid tight sealed engagment with the side wall 32 and the upper end of vessel 18 is closed by the diaphragm.
  • the diaphragm 22 forms an upper wall which defines with bottom wall 30 and side wall 32 of vessel 18, a variable volume or expansible fluid pressure chamber orcontainer indicated at 42.
  • the actuating plate 24 is disposed between the cover member 26 and diaphragm 22 in limited, free-floating relation with the diaphragm, the plate 24 resting upon the upper surface of the diaphragm and being slidable a limited amount relative thereto.
  • Plate 24 is complementary in shape to the diaphragm 22, and has a slightly smaller area or periphery than the open upper end of the vessel 18 so that the plate 24 is movable within the vessel between or within side walls 32, as will be explained more fully hereinafter.
  • Plate 24 is pro vided with two spaced, similar recesses 43 and 44 respectively provided with keyways or laterally extending slots 46 and 47 for receiving portions of actuator 28, as
  • Plate 24 is shown having a plurality of integral strengthening ribs indicated in phantom at 48 in FIG. 2.
  • the cover member 26 includes an upper plate 49 having a peripheral depending side wall 50 integral with the plate.
  • the side wall 50 fits within the rim 41 with the lower edge of the side wall 50 engaging the upper side of the bead 40 of diaphragm 22, as seen in FIGS. 5 and 5a.
  • the cover member 26 is connected to the rim 41 by any suitable means, for example, by welding, such as solvent welding, at the junction of the outer periphery of top plate 49 and the upper edge of rim 41, as indicated at 51 in FIG. 5a.
  • the cover member 26 provides an effectively rigid, nonbending, surface which substantially closes the entire open end of the vessel 18.
  • the cover is provided with a generally U-shaped recess 53 which is adapted to receive the actuator 28 (FIG. 4).
  • Cover member 26 Adjacent the ends of the legs of the U-shaped recess 53 are provided a pair of similar openings 55 and 56 which are in registration with recesses 43 and 44 in the actuating plate 24, as more clearly seen in FIG. 2. Openings 55 and 56 are respectively provided with oppositely extending lateral slots 58 and 59 which are respectively in registration with slots 46 and 47 of recesses 43 and 44 in plate 24.
  • Cover member 26 is shown having a plurality of strengthening ribs or beams shown in phantom at 60 in FIG. 2 which extend both laterally and longitudinally adjacent the underside of the cover. The ribs 60 may be attached to the cover by cement or may be formed integrally therewith.
  • the cover member 26 is formed of a relatively rigid material, for example, a relatively hard plastic.
  • Cover member 26 is also provided with a pair of abutments or catches 62 and 63 for actuator 28 which extend vertically from the underside of the top plate adjacent the openings 55 and 56.
  • the catches 62 and 63 are shown as portions of one of the ribs 60. i
  • the actuator 28 is in the form of a generally U- shaped manually operated actuator handle.
  • the actuator is provided with a pair of spaced vertical legs 65 and 66 and an upper horizontal connecting member 67.
  • the legs 65 and 66 are respectively provided with latches defined by horizontally extending ledges or abutments 70 and 71 which are adapted to respectively engage catches 62 and 63 on the cover member 26.
  • the legs 65 and 66 have connected to the ends thereof abutment members 73 and 74 respectively.
  • the abutment members 73 and 74 are shown as cylindrical members integrally'connected to their respective legs. These abutment members have oppositely extending keys 77 and 78 respectively disposed at the ends thereof.
  • the actuator 28 is disposed in its recess 53 in the cover member 26.
  • one outer side of the vessel is shown provided with graduation marks to indicate the quantity of fluid in the device at any given time, the vessel being preferably formed of a transparent material, such as transparent plastic.
  • the drainage device 10 is readily assembled.
  • the diaphragm 20 may be placed into the vessel 18 with the diaphragm bead 40 entering the peripheral groove 39 and. preferably being forced into the groove in tight .frictional engagement therewith.
  • the actuating plate 24 is placed on top of the diaphragm 22 and then the cover member 26 is placed such that the lower edge of sidewall 50 enters the groove 39 in the vessel and engages the upper surface of the bead 40 of diaphragm 22 to maintain the bead in place in the groove and further ensure sealed engagement between the diaphragm and side walls 32.
  • a suitable lubricant such as of the silicone type, is preferably applied to the top surface of diaphragm 22 during assembly to ensure that the plate 24 will readily slide relative to the diaphragm 22.
  • the cover member 26 may then be secured to the upper edge of the vessel rim 41 by solvent welding as previously mentioned herein.
  • the actuator handle 28 is then inserted into the cover 26 by manually moving the two legs 65 and 66 vertically intov openings 55 and 56 and i with the keys 77 and 78 entering their respective slots 58 and 59 adjacent these openings. Once the keys 77 and 78 aremoved downwardly past the cover slots 58 and 59, the actuator handle can be pivoted to its horizontal or storedposition shown in FIGS. 3, 4 and 5. In this position ofthe actuator handle 28, the plane of the keys 77 and 78 are horizontal and cannot inadvertently pass through the slots 58 and 59 in the cover 26.
  • cover26 is also shown having a pair of abutment members 80 and 81 (FIG. 4) in the recess 53 which are frictionally engaged by the handle to maintain the handle positioned in the recess 53 substantially horizontal or parallel to the plane of the cover 26.
  • the cover 26 is shown in FIGS. 2 and 5a provided with a peripheral recess 83 which receives a plurality of resilient tabs or inwardly extending protrusions 85 so that the cover 26 may be mechanicallyheld in place'prior to the forming of the weld 51.
  • the drainage device is shown in FIGS. 3-5 in its assembled condition with the manual actuator 28 in the stored horizontal position in the U-shaped recess 53,
  • the drainage device being in its normally unactuatedorinactive condition.
  • the diaphragm 22 is resiliently urged away from the bottom wall 30 by the inherent resiliency thereof to a position in which it is spaced a maximum amount from wall 30- so that chamber 42 is in an expanded condition and has a maximum volume. This is the preferred condition for packaging, shipping, and storing the drainage device.
  • the actuator handle 28 may be manually lifted from the recess 53 in the cover member 26 so that the handle is raised to the vertical position as shown in FIG. 6.
  • Actuator handle 28 is moved vertically downwardly by applying a downward manual force thereto such as by grasping the horizontal handle member 67 by hand and urging it downwardly.
  • This applied manual force is transmitted by the handle abutments 73 and 74 to the plate 24 of the fluid displacement member to move the plate 24 which, in turn, moves diaphragm 22 downwardly.
  • the diaphragm 22 which serves as an upper movable wall of the container or chamber 42, stretches and moves downwardly towards the bottom wall 30of the vessel to compress expansible container or chamber 42 and evacuate fluid, in this case air, therefrom. Air is expelled through either or both of the vessel ports 33 or 35 as desired.
  • the handle 28 When the central portion of the diaphragm 22 is at or near the bottom wall 30, the handle 28 is movedslightly forward so that the lands and 71 move under the catches 62 and 63 respectively, whereby the handle is latched in the downward position, the condition indicated in FIGS. 7 and 8. In this condition the fluid displacement member 20 and handle 28 aremaintained in latched or locked position opposing the resilient force of the stretched diaphragm 22. Under these conditions the manually applied force can be removed from the-handle 28 and the device 10 moved orhanded to another person while the. device remains locked in its actuated or cocked position with the volume of the chamber at a minimum and the device ready for use.
  • the closure 37 is then inserted into the drain member 36 and the drainage tube 16, which may have been previously inserted into the patients body in a suitable or conventional manner, is sealably connected to the connector 34, such as by a sliding frictional slip fit.
  • the device 10 can be unlocked or tripped from its cocked conditionto its activated or operating condition by unlatching handle 28. This is simply accomplished by moving the handle 28 slightly to the left from the position shown in FIG. 7 until the lands 70 and 71 move out of engagement with catches 62 and 63. Since the handle 28 is movable relative to the actuating plate 24, it can be raised and then pivoted towards the cover 26 and into recess 53.
  • the drainage device 10 is seen in FIGS.
  • the inherent resiliency of the stretched diaphragm 22 creates a partial vacuum or negative pressure in the chamber 42 and fluid is drawn in as the expansible chamber expands or increases in volume due to the movement of fluid displacement member 20 in a direction away from bottom wall 30.
  • the drainage device 10 With the drainage device 10 activated as described above and connected by belt 13. to a human body as in dicated in FIG. I, wound drainage will flow into the vessel 32 until the diaphragm is returned to its normally substantially unstretched condition, such as indicated in FIG. 5. After the chamber 42 is filled, the device 10 may be readily removed and suitably discarded. Alternatively, after the device 10 is filled, it may be drained, for example, by removing plug 37 from drain member 36, for use again with the same patient.
  • the actuating plate 24, as shown in the drawings, has a relatively large area and a continuous outer peripheral portion which engages the diaphragm 22 closely adjacent the outer periphery of the diaphragm and entirely around the vessel 18 so that the plate 24 tends to distribute the actuating force applied to it evenly around the diaphragm. In this way, the diaphragm is substantially evenly stretched as the actuating plate moves toward the bottom wall 30.
  • the keys 77 and 78 on the'actuator handle 28 tend to maintain the handle in a vertical position and this facilitates the application of the actuating force to the handle.
  • the keys 77 and 78 may be formed to have slightly different shapes or lengths and with the cover slots 58 and 59 respectively conforming to them, so that the actuator 28 can only be inserted into the cover 26 in its properly oriented position with the lands 70 and 71 located to engage the catches 62 and 63 when the device is cocked.
  • the handle 28 can be latched with the device 10 in its actuated or cocked position shown in FIG. 7, the handling of the device l is greatly facilitated. Since the device can be maintained in a cocked position without manually applied forces on handle 28, the connection of the device to the body and the connection of the drainage tube 16 to the cocked device can be made easily and without haste. With the construction described herein, the device 10, once it is connected to the body and tripped or activated by unlatching handle 28 and returning it to its recess 53 in cover 26, cannot be reactuated or compressed to inadvertently return fluid accumulated in the chamber 42 to the body. This is because the side walls 32 are formed of relatively rigid and non-compressive material such as a hard plastic. Thus, even where the patient carrying the device 10 places his weight on the device, it cannot return wound drainage fluid back into the wound.
  • the actuating plate 24 and diaphragm 22 will always be in a predetermined location regardless of the person applying the actuating force or the manner in which it is applied. In this way, the partial vacuum or negative pressure created by the expansion of chamber 42 as a result of the resilient force of diaphragm 20, will be the same for any given design.
  • Vessel 18, actuating plate 24 and cover 26, in the preferred embodiment are formed of a relatively hard and effectively rigid plastic so that they are effectively non-flexible and this further ensures against any inadvertent compression of the device that would return fluid from the device to the body.
  • Device 10 may be shipped and stored in a sterile packaged condition ready for useL Because it can be formed of economical materials, such as plastic materials, the device 10 can be economically disposed of after a single use.
  • a portable, manually operable body wound suction drainage device comprising a vessel having a bottom wall, and a peripheral side wall connected thereto,
  • a plate member connected to said side wall, resiliently urged fluid displacement means including an elastic movable in response to an applied force thereon for stretching and moving said diaphragm toward said bottom wall to a position wherein the volume of said chamber is relatively small, actuator means on said plate member responsive to a force manually applied thereto for applying a force on said actuating member for moving said actuating member and said diaphragm toward said bottom wall, tube connector means connected in continuous fluid communication with said chamber during the drainage operation of the device, and a body fluid drainage tube having one end connectable in sealed fluid communication with said tube connector means and the other end insertable in a body wound for transferring drainage fluid from the wound to said chamber in response to negative pressure in said chamber due to movement of said fluid displacement means away from said bottom wall, said side wall being substantially rigid in a direction parallel to the direction of movement of said fluid displacement means preventing an inadvertentcompressive force applied to said side wall from efiecting movement of said fluid displacement means toward said bottom wall and drainage fluid flow back to the body wound.
  • a portable, manually operable body wound drainage device comprising a vessel having a bottom wall, and a substantially rigid peripheral side wall connected thereto, resiliently urged fluid displacement means comprising a flexible resilient diaphragm member in the form of an elastic sheet member sealingly connected with said wall in normally spaced relation with said bottom wall, said diaphragm member being resiliently urged in a direction away from said bottom wall and movable within said peripheral side wall toward and away from said bottom wall to define a variable volume fluid pressure chamber therebetween, a plate member connected to said side wall and having an opening therethrough, said fluid displacement means including an actuating member disposed between said plate member and said diaphragm member and engaging said diaphragm member closely adjacent the outer periphery of said diaphragm member to substantially evenly distribute an applied force thereto, said actuating member being movable in response to an applied force thereon for stretching and moving said diaphragm member toward said bottom wall, actuator means on said plate member movable.
  • said locking means includes abutment means on said plate member, and abutment means on said actuator means engageable with said first named abutment means for holding said actuator means in said predetermined position.
  • said actuator means is movable relative to said actuating member and comprises a generally U-shaped element pivotally movable froma position substantially parallel to the plane of said plate member to a position generally normal to the, plane of said plate member and said actuating frnember.
  • a portable, manually operable body wound drainage device comprising avessel having a bottom wall, and a substantially rigid peripheral side wall connected thereto, aneffectively rigid'plate member connected to against the resiliency thereoftoward said bottom wall,
  • latching means for maintaining said device in a cocked condition when said fluid displacement means is in a position in which the volume of said chamber is at a predetermined relatively small value
  • said latching means including first abutment means on said plate member and second abutment meanson said actuator means engageable with said first abutment ,means when said fluid displacement means is in said position, and passage means enabling the interior of said chamber to be connected in fluid communication with a body wound.
  • said actuator means comprises an effectively rigid elongated member pivotally connected to said plate member and movable to a position in which its lengthwise axis is substantially parallel with the plane of said plate member.
  • said actuator means comprises an elastic sheet member with the periphery thereof connected in sealing engagement with said side wall, and an effectively rigid force transmitting member disposed between said plate member and engaged with said sheet member and movable relative thereto to stretch said sheet member and move the same toward said bottom wall in response to the application of a predetermined force on said force transmitting member.
  • the device according to claim 10 further including a lubricant disposed between the engaging surfaces of said sheet means and said force transmitting member to facilitate relative movement thereof.
  • a portable, manually operable, wound suction drainage device comprising a fluid pressure chamber including a peripheral side wall, and a pair of oppositely disposed walls, at least one of said pair of walls being movable toward and away from theother wall of said pair to vary the volume of said chamber, said one wall being resiliently urged toward a first position spaced from said other wall wherein said chamber has a predetermined maximum volume, a plate member connected in fixed spaced relation from said other wall,
  • said actuator means for moving said one wall in a direction after removal of said applied force, said releasable locking means including first abutment means on said plate member, and second abutment means on said actuator means, said actuator means being movable to effect engagement between said first and second abutment meansafter said actuator means moves said one wall to said secondposition to thereby prevent movement of said one wall from said second position, said actuator means being manually movable to effect disengagement of said first and second abutment means to permit movement of said one wall toward said second position, and passage means in operative connection with said chamber enabliing operative connection of said chamber with a wound.
  • said actuator means includes an elongated member movable in said opening with its lengthwise axis perpendicular to the plane of said plate member,said elongated member is pivotal into a stored position in which said axis is substantially parallel with the plane of said plate member, said second abutment means is disposed on said elongated member.
  • the device according to claim 13 further includmember is in said actuation plate recess and said axis is perpendicular to the plane of said plate member, and
  • said plate member has a recess for receiving said actuator means when in said stored position.
  • a portable, manually operable, wound suction drainage device comprising a fluid pressure chamber including a peripheral side wall, and a pair of oppositely disposed wall members, at least one of said pair of wall members being movable toward and away from the other wall member of said pair to vary the volume of said chamber, said one wall being resiliently urged toward a first position spaced from said other wall wherein said chamber has a predetermined maximum volume, said one wall member being movable in a direction toward said other wall member in response to an applied force thereon to a second position wherein said chamber has a relatively small volume, tube connector means connected in fluid communication with the interior of said container, drainage tube means having one end connectable in fluid communication with said tube connector means and the opposite end thereof adapted to be disposed in a wound to be drained of body fluid, and releasable locking means actuatable into holding engagement with said one wall member for holding said one wall member in said second position without requiring a manual force thereon to permit fluid communication connection of said drainage tube means with said tube connector means and insertion
  • the device according to claim 17 further including a substantially rigid cover plate member substantially closing the upper end of said peripheral side wall, and wherein said one wall member further includes a substantially rigid actuating plate on said sheet member between said plate member and said sheet member, and wherein said locking means includes actuator means engaged between said cover plate member and said actuating plate when said locking means is actuated to hold said one wall member in said second position.
  • a portable wound suction pump for connection with a body wound for draining body fluid therefrom including a collapsible container adapted to be collapsed by a manual force applied thereto to reduce the internal volume thereof including means for expanding the volume thereof from a collapsed condition to produce a negative pressure for drawing body fluid into the container, the improvement comprising tube connector means connected in fluid communication with the interior of said container, body fluid drainage tube means having one end connectable in fluid communication with said tube connector and the opposite end thereof insertable in a wound to be drained of body fluid, and manually operable means for selectively locking said container in a substantially collapsed condition and for maintaining it in a collapsed condition without requiring a manual force thereon to permit fluid communication connection of said drainage tube means with said tube connector means and insertion of said drainage tube means in the wound while said container is held locked in a substantially collapsed condition by said locking means, and
  • a portable, manually operable body wound drainage device comprising a vessel having a bottom wall, and a substantially rigid peripheral side wall connected thereto, resiliently urged fluid displacement means movable within said peripheral side wall toward and away from said bottom wall to define a variable volume fluid pressure chamber therebetween, passage means enabling the interior of said chamber to be connected in fluid communication with a body wound, and releasable locking means for selectively holding said resiliently urged fluid displacement means in a position in which the volume of said chamber is reduced and for releasing said resiliently urged fluid displacement means from said position for increasing the volume of said chamber.
  • said locking means includes engagement means engageable with said resiliently urged fluid displacement means for selectively applying a restraining force on said resiliently urged fluid displacement means to maintain the same in a position in which the volume of said chamber is reduced without requiring the application of a manually applied force on said resiliently urged fluid displacement means, and releasing said engagement means to remove said restraining force and permit movement of said resiliently urged displacement means to increase the volume of said chamber and produce a negative pressure in said chamber for drawing fluid into said chamber from the body wound.
  • a portable, manually operable body wound suction drainage device comprising a variable volume fluid pressure chamber including an effectively rigid peripheral side wall, and a pair of oppositely disposed walls connected to the said peripheral side wall, at least one of said pair of walls being movable relative to the other wall of said pair and normally resiliently urged toward a position spaced therefrom, said one wall being movable toward said other wall in response to an applied force thereon to expel fluid from said chamber and reduce the volume thereof, passage means for operatively connecting said chamber to a body wound so that upon movement of said one wall toward said spaced position to increase the volume of said chamber a negative pressure is developed in said chamber for drawing body fluid into said chamber from the wound, and releasable locking means for selectively holding said one wall in a position wherein a volume of said chamber is reduced after removal of the applied force and for releasing said one wall to increase the volume of said chamber.
  • a portable, manually operable body wound suction drainage device comprising a vessel having a bottom wall, and a peripheral side wall connected thereto, a substantially rigid plate member connected to said side wall in fixed spaced relation with said bottom wall and extending generally parallel to said bottom wall, resiliently urged fluiddisplacement means including an elastic sheet diaphragm sealingly connected to said side wall between said plate member and said bottom wall and movable within said side wall toward and away from said bottom wall to define a variable volume fluid pressure chamber between said diaphragm and said bottom wall, said diaphragm being normally resiliently urged toward a position spaced from said bottom wall with said chamber having a relatively large volume, said fluid displacement means including an actuating and the other end insergable in a body wound for transferring drainage fluid from the wound to said chamber in response to negative pressure in said chamber due to movement of said diaphragm away from said bottom wall, said side wall being substantially rigid in a direction parallel to the direction of movement of said diaphragm preventing an inadvertent

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Materials For Medical Uses (AREA)
  • Surgical Instruments (AREA)
US00206307A 1971-12-09 1971-12-09 Wound drainage device Expired - Lifetime US3809086A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BE792506D BE792506A (fr) 1971-12-09 Dispositifs de drainage médical
US00206307A US3809086A (en) 1971-12-09 1971-12-09 Wound drainage device
CA158,426A CA1017642A (en) 1971-12-09 1972-12-01 Wound drainage device
FR7243847A FR2165934B1 (enrdf_load_stackoverflow) 1971-12-09 1972-12-08
GB5684172A GB1404959A (en) 1971-12-09 1972-12-08 Wound drainage device
GB3766074A GB1404960A (en) 1971-12-09 1972-12-08 Wound drainage device
JP12327972A JPS541399B2 (enrdf_load_stackoverflow) 1971-12-09 1972-12-08
CA228,610A CA1017644A (en) 1971-12-09 1975-06-05 Wound drainage device

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Application Number Priority Date Filing Date Title
US00206307A US3809086A (en) 1971-12-09 1971-12-09 Wound drainage device

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US3809086A true US3809086A (en) 1974-05-07

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US00206307A Expired - Lifetime US3809086A (en) 1971-12-09 1971-12-09 Wound drainage device

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BE792506A (fr) 1973-03-30
FR2165934B1 (enrdf_load_stackoverflow) 1978-03-03
JPS541399B2 (enrdf_load_stackoverflow) 1979-01-24
GB1404960A (en) 1975-09-03
FR2165934A1 (enrdf_load_stackoverflow) 1973-08-10
CA1017642A (en) 1977-09-20
JPS4865791A (enrdf_load_stackoverflow) 1973-09-10
GB1404959A (en) 1975-09-03

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