Subcutaneous fluid pump
First Claim
1. A subcutaneous pump configured to drain excess fluid from a first bodily location in a patient and discharges into a second bodily location, comprising:
- a single continuous length of elongated flexible tube having a continuous sidewall extending between an intake end for leaving loose in the first location, comprising the peritoneal cavity, and, a discharge end for discharging the excess patient fluid in the second location, comprising a target organ or a gland;
said single continuous length of elongated flexible tube having a specified medial zone adapted to be embedded in the subcutaneous layer of the patient'"'"'s abdominal wall;
said single continuous length of elongated flexible tube being made from such a flexible material that has sufficient shape memory properties such that if tube sidewall in the specified medial zone is collapsed by an applied external force, then after the removal of the applied external force the shape memory properties of the tube material will restore the specified medial zone to defining a central lumen generally ranging from a cylindrical shape to at least an axially hollow shape;
said central lumen of the specified medial zone comprising a plenum all within the specified medial zone and axially extending between a relative inlet portion and an axially spaced apart relative outlet portion;
wherein the tube sidewall in the specified medial zone has axially-extending, angularly delimited zones comprising at least a proximal angularly delimited zone configured to face the patient'"'"'s skin and a distal angularly delimited zone configured to face the patient'"'"'s peritoneal cavity;
an elongated strip of magnetic or magnetizable material affixed on or in the either proximal angularly delimited zone of the tube sidewall or else the distal angularly delimited zone of the tube sidewall;
whereby a fluctuating magnetic field causes the tube sidewall of the specified medial zone to distort the plenum.
1 Assignment
0 Petitions
Accused Products
Abstract
A subcutaneous pump is provided to drain excess patient fluid from a first bodily location and discharge into a second bodily location. The pump is made from elongated flexible tube, an anchor, a check valve and then also magnetic or magnetizable material. The tube extends between a fenestrated intake end left loose in the first location (e.g., peritoneal cavity) and a discharge end for the second location (e.g., stomach or bladder). The anchor affixes the discharge end into the second location. The tube furthermore has a specified medial zone to be embedded in the subcutaneous layer of the patient'"'"'s abdominal wall. The check valve is disposed inside the tube anywhere between the medial zone and the discharge end. The magnetic or magnetizable material is disposed in or around the specified medial zone and adapted to induce fluid pumping through the specified medial zone in response to an applied magnetic field.
78 Citations
16 Claims
-
1. A subcutaneous pump configured to drain excess fluid from a first bodily location in a patient and discharges into a second bodily location, comprising:
-
a single continuous length of elongated flexible tube having a continuous sidewall extending between an intake end for leaving loose in the first location, comprising the peritoneal cavity, and, a discharge end for discharging the excess patient fluid in the second location, comprising a target organ or a gland; said single continuous length of elongated flexible tube having a specified medial zone adapted to be embedded in the subcutaneous layer of the patient'"'"'s abdominal wall; said single continuous length of elongated flexible tube being made from such a flexible material that has sufficient shape memory properties such that if tube sidewall in the specified medial zone is collapsed by an applied external force, then after the removal of the applied external force the shape memory properties of the tube material will restore the specified medial zone to defining a central lumen generally ranging from a cylindrical shape to at least an axially hollow shape; said central lumen of the specified medial zone comprising a plenum all within the specified medial zone and axially extending between a relative inlet portion and an axially spaced apart relative outlet portion; wherein the tube sidewall in the specified medial zone has axially-extending, angularly delimited zones comprising at least a proximal angularly delimited zone configured to face the patient'"'"'s skin and a distal angularly delimited zone configured to face the patient'"'"'s peritoneal cavity; an elongated strip of magnetic or magnetizable material affixed on or in the either proximal angularly delimited zone of the tube sidewall or else the distal angularly delimited zone of the tube sidewall; whereby a fluctuating magnetic field causes the tube sidewall of the specified medial zone to distort the plenum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A subcutaneous pump configured to drain excess fluid from a first bodily location in a patient and discharges into a second bodily location, comprising:
-
a single continuous length of elongated flexible tube having a continuous sidewall extending between an intake end for leaving loose in the first location, comprising the peritoneal cavity, and, a discharge end for discharging the excess patient fluid in the second location, comprising a target organ or a gland; said single continuous length of elongated flexible tube having a specified medial zone adapted to be embedded in the subcutaneous layer of the patient'"'"'s abdominal wall; said single continuous length of elongated flexible tube being made from such a flexible material that has sufficient shape memory properties such that if tube sidewall in the specified medial zone is collapsed by an applied external force, then after the removal of the applied external force the shape memory properties of the tube material will restore the specified medial zone to defining a central lumen generally ranging from a cylindrical shape to at least an axially hollow shape; said central lumen of the specified medial zone comprising a plenum all within the specified medial zone and axially extending between a relative inlet portion and an axially spaced apart relative outlet portion; wherein the tube sidewall in the specified medial zone has axially-extending, angularly delimited zones comprising at least a proximal angularly delimited zone configured to face the patient'"'"'s skin and a distal angularly delimited zone configured to face the patient'"'"'s peritoneal cavity; a series of axially spaced elements of magnetic or magnetizable material affixed on or in the either proximal angularly delimited zone of the tube sidewall or else the distal angularly delimited zone of the tube sidewall; whereby a repetitive, axially progressing applied magnetic field starting from the relative intake portion to the relative outlet portion, and then starting over at the relative intake portion, causes the tube sidewall of the specified medial zone to distort the plenum in a peristaltic action. - View Dependent Claims (10, 11, 12, 13)
-
-
14. A subcutaneous pump configured to drain excess fluid from a first bodily location in a patient and discharges into a second bodily location, comprising:
-
a single continuous length of elongated flexible tube having a continuous sidewall extending between an intake end for leaving loose in the first location, comprising the peritoneal cavity, and, a discharge end for discharging the excess patient fluid in the second location, comprising a target organ or a gland; said single continuous length of elongated flexible tube having a specified medial zone adapted to be embedded in the subcutaneous layer of the patient'"'"'s abdominal wall; said single continuous length of elongated flexible tube being made from such a flexible material that has sufficient shape memory properties such that if tube sidewall in the specified medial zone is collapsed by an applied external force, then after the removal of the applied external force the shape memory properties of the tube material will restore the specified medial zone to defining a central lumen generally ranging from a cylindrical shape to at least an axially hollow shape; said central lumen of the specified medial zone comprising a plenum all within the specified medial zone and axially extending between a relative inlet portion and an axially spaced apart relative outlet portion; a reciprocating body of magnetic or magnetizable material disposed inside the plenum to reciprocate back and forth between the relative intake portion and relative outlet portion; whereby a magnetic field driving reciprocating body to reciprocate back and forth in the plenum causes a pumping action. - View Dependent Claims (15, 16)
-
Specification