Reduced pressure delivery system having a manually-activated pump for providing treatment to low-severity wounds

Abstract

A manually-activated reduced pressure treatment system includes a substantially rigid housing, and an end cap slidingly received by the housing. An inner chamber is disposed between the end cap and housing, and a volume of the inner chamber is variable in amount depending on the position of the end cap within the housing. The end cap is slidingly movable between an uncompressed position at which the volume of the inner chamber is at a maximum value and a compressed position at which the volume of the inner chamber is at a minimum value. A position indicating member is associated with the end cap and housing to indicate the position of the end cap relative to the housing at predetermined positions between the uncompressed position and the compressed position.

What is claimed is: 
     
         1 . A low-profile reduced pressure treatment system comprising:
 a reduced pressure manifold configured to be placed adjacent to a tissue site; and   a delivery tube fluidly connected to the reduced pressure manifold, the delivery tube having a substantially rectangular cross-section and a plurality of corrugations within the delivery tube to prevent collapse of the delivery tube during delivery of reduced pressure.   
     
     
         2 . The system of  claim 1 , further comprising a reduced pressure source configured to be coupled to the delivery tube. 
     
     
         3 . The system of  claim 2 , wherein the reduced pressure source is a manually-compressible pump comprising:
 a side wall;   first and second end caps connected at opposite ends of the side wall to form an inner chamber having a volume that varies from a maximum value in an uncompressed position to a minimum value in a compressed position;   a connection port disposed in one of the first and second end caps to allow fluid communication between the inner chamber and the delivery tube;   a one-way valve disposed in one of the first end cap, the second end cap, and the side wall to allow fluid expulsion from the inner chamber; and   a hydrophobic filter in communication with the one-way valve to prevent liquid from exiting the inner chamber through the one-way valve.   
     
     
         4 . The system according to  claim 1 , further comprising:
 a film for sealing the reduced pressure manifold adjacent to the tissue site, the film having a first aperture for allowing fluid communication with the tissue site; and   a tube connector positioned over the first aperture, the tube connector having a second aperture configured to receive the delivery tube.   
     
     
         5 . The system according to  claim 1 , wherein the reduced pressure manifold is a reticulated, open-cell foam. 
     
     
         6 . The system according to  claim 1 , wherein the plurality of corrugations form a plurality of channels. 
     
     
         7 . A manually-activated reduced pressure treatment system for reduced pressure treatment, comprising:
 a manually-compressible pump comprising:   a compressible side wall;   an end cap connected at a first end of the side wall;   a one-way valve disposed in one of the end cap and the side wall;   a hydrophobic filter; and   a low-profile wound dressing connected at a second end of the side wall to form an inner chamber defined by the side wall, and the end cap, and the low-profile wound dressing, the inner chamber having a volume that varies from a maximum value when the side wall is in an uncompressed position to a minimum value when the side wall is in a compressed position;   wherein the one-way valve allows fluid expulsion from the inner chamber, and   wherein the hydrophobic filter is in communication with the one-way valve to prevent liquid from exiting the inner chamber through the one-way valve.   
     
     
         8 . The manually-activated reduced pressure treatment system of  claim 7 , wherein the manually-compressible pump further comprises an odor filter in communication with the one-way valve to eliminate odors associated with fluid expelled through the one-way valve. 
     
     
         9 . The manually-activated reduced pressure treatment system of  claim 7 , wherein the side wall comprises a plurality of corrugations configured to bias the side wall toward the uncompressed position. 
     
     
         10 . The manually-activated reduced pressure treatment system of  claim 7 , wherein the side wall includes a plurality of ridges and grooves configured to bias the side wall toward the uncompressed position. 
     
     
         11 . The manually-activated reduced pressure treatment system of  claim 7 , wherein the manually-compressible pump further comprises a spring configured to bias the side wall toward the uncompressed position. 
     
     
         12 . The manually-activated reduced pressure treatment system of  claim 7 , wherein the one-way valve is disposed in the end cap. 
     
     
         13 . The manually-activated reduced pressure treatment system of  claim 7 , wherein the manually-compressible pump further comprises an absorbent foam disposed within the inner chamber. 
     
     
         14 . The manually-activated reduced pressure treatment system of  claim 7 , wherein the manually-compressible pump further comprises:
 a housing that contains the side wall; and   a position indicating member associated with the housing and the end cap to indicate a position of the side wall at predetermined positions between the uncompressed position and the compressed position.   
     
     
         15 . The manually-activated reduced pressure treatment system of  claim 14 , wherein the position indicating member comprises a plurality of teeth and a pawl configured to mate with one another to indicate the position of the side wall at predetermined positions between the uncompressed position and the compressed position, wherein one of the plurality of teeth and the pawl is disposed on the housing, and the other of the plurality of teeth and the pawl is disposed on the end cap. 
     
     
         16 . The manually-activated reduced pressure treatment system of  claim 14 , wherein the position indicating member provides an audible indication of the end cap being moved from the uncompressed position toward the compressed position.