SURGICAL SUCTION PUMP ASSEMBLY

• US 3,742,952 A
• Filed: 04/28/1971
• Issued: 07/03/1973
• Est. Priority Date: 04/28/1971
• Status: Expired due to Term

• Current Assignee: Earl J. Simons, Paul E. Magers
• Original Assignee: Earl J. Simons, Paul E. Magers
• Inventors: Magers, Paul E., Simons, Earl J.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Yasko, J.
• Application Number:
  US05/138,236
• Time in Patent Office: 797 Days
• Field of Search: 128/278,276,295,275,273,230,231,232 222/210,215
• US Class Current: 604/133
• CPC Class Codes: A61M 1/684 bellows-type
• CPC Class Codes: A61M 1/82 Membrane pumps, e.g. bulbs

Abstract

A surgical suction assembly for use in closed wound surgical techniques comprising a bellows of inherently resilient material, a drainage tube for insertion in a wound, and a plug assembly for connecting the drainage tube to the bellows which incorporates a one-way valve arranged to open in response to resilient expansion of the bellows and to close in response to compression of the bellows in order to prevent accidental return to the wound of fluids which have been drained therefrom.

Claims

1. A surgical suction assembly for withdrawing fluids from within a closed wound, comprising a tube having an intake end adapted for insertion within a closed wound and a discharge end, a resiliently compressible and expansible suction-collector unit having a port in one wall thereof for both entry and discharge of fluids in response to expansion and compression of said unit, means including a plug body removably connecting said discharge end of said tube to said port, said plug body having its outer surface adjacent one end thereof in sealing engagement within said port, said plug body having a central bore of substantially cylindrical section, perforate web means partially closing said bore at said one end of said plug body, tubular connector means at one end inserted firmly into the other end of said bore, shoulder means limiting the extent of insertion of said tubular connector means into said bore to provide a space between said web means and the opposed one end of said tubular connecting means, a ball received in said space and of smaller diameter than said bore and the axial dimension of said space to provide for free movement of said ball in said space, said tubular connector means having an inner diameter smaller than said ball diameter to form an annular seat for said ball, and means connecting the other end of said tubular connector means to said discharge end of said tube, whereby with said bore constituting the sole passagway into and out of said collector unit, said ball will move away from said seat in response to negative pressure within said collector unit to provide for application of suction to said tube and drainage therefrom of fluid through said perforate web means into said collector unit, and said ball will move into seated engagement with said seat in response to positive pressure within said collector unit and thereby block the flow of fluid outwardly from said collector unit.

2. The assembly as defined in claim 1 wherein said ball is composed of a material having a lower specific gravity than water.

3. The assembly as defined in claim 1 wherein said suction-collector unit is a bellows formed of inherently resilient material of sufficient plastic memory to return to a normal expanded position after compression thereof, said bellows being further characterized by oval shape and by comprising substantially flat top and bottom walls connected by a convoluted side wall providing for compression of said bellows to a condition of substantially minimum volumn by collapsing of said side wall and bending of said side and bottom walls about the shorter diametral dimension thereof.