Motorized IV pole assembly
First Claim
1. A system for supporting a parenteral liquid container comprising:
- hanger means for supporting said parenteral liquid container;
vertical telescoping support means for changing the height of said hanger means, including concentric outer, middle, and inner elongated support members, said hanger means being attached to one end of said inner support member;
said middle support member having a pulley attached near its upper end;
cable means having a first end attached to the other end of said inner support member and having a second end attached to said outer support member, said cable means engaging with said pulley; and
drive means coupled to said middle support member for moving vertically said middle support member wherein said vertical motion of said middle support member is transferred through said cable means to said inner support member.
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Accused Products
Abstract
A motorized IV pole system for controlling the height of an IV container to thereby control the infusion pressure in an IV tube includes a telescoping IV pole system. In one embodiment, comprising three concentric support members, the outer support member is fixed, the middle support member is reciprocable with respect to the outer support member and is driven by a rack gear attached thereto. An inner support member is reciprocatable in the interior of the middle support member and is driven by a cable attached to the outer support member passing over a pulley attached to the middle support member. The rack on the middle support member may be driven by a shaft to which is attached a hand crank and an AC motor. The AC motor may be driven by a programmable control system which includes an optical encoder to permit display of the height of the IV container. Also, preselected heights and various speeds of height adjustment may be utilized. Another embodiment employs a tubular support member carrying a nut driven by a concentric threaded shaft. A friction-adjustable bearing for maintaining the position of the shaft permits manual height adjustment.
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Citations
30 Claims
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1. A system for supporting a parenteral liquid container comprising:
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hanger means for supporting said parenteral liquid container; vertical telescoping support means for changing the height of said hanger means, including concentric outer, middle, and inner elongated support members, said hanger means being attached to one end of said inner support member; said middle support member having a pulley attached near its upper end; cable means having a first end attached to the other end of said inner support member and having a second end attached to said outer support member, said cable means engaging with said pulley; and drive means coupled to said middle support member for moving vertically said middle support member wherein said vertical motion of said middle support member is transferred through said cable means to said inner support member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for controlling the height of a parenteral liquid container comprising:
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hanger means for supporting said parenteral liquid containers; telescoping support means for changing the height of said hanger means including a plurality of concentric elongated support members; drive means cooperating with said telescoping support means for reciprocating vertically said concentric elongated support members; and electronic controller for controlling said drive means including means for automatically actuating said drive means in a first direction to increase fluid pressure, and means for automatically actuating said drive means in a second direction to decrease fluid pressure. - View Dependent Claims (11, 12, 13, 14, 15, 16, 18)
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17. An apparatus for controlling the infusion pressure in an IV tube comprising:
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IV container for attachment to said IV tube; hanger means for supporting said IV container; vertical telescoping support means for changing the height of said hanger means including concentric outer, middle and inner elongated support members, said hanger means being attached to one end of said inner support member; said middle support member having a pulley attached near its upper end; cable means having a first end attached to the other end of said inner support member and having a second end attached to said outer support member, said cable means engaging with said pulley; drive means including a rotatable shaft having a pinion gear on one end, and a rack gear attached to said middle support member and engaged with said pinion gear, wherein rotation of said shaft is translated into vertical motion in said middle support member; electronic controller for controlling said drive means including means for actuating said drive means in a first direction, and means for actuating said drive means in a second direction; and means for sensing the height of said IV container, and means for displaying the height of said IV container.
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19. Apparatus for controlling the pressure of a parenteral liquid container comprising:
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hanging means for supporting said parenteral liquid containers; telescoping support means for displacing the hanger means including a plurality of concentric elongated support members; drive means for longitudinally reciprocating at least one of said concentric support members; and an electronic controller for controlling said drive means including means for automatically actuating said drive means for displacing said at least one support member in a first direction to increase fluid pressure, and means for automatically actuating said drive means in a second direction for displacing said at least one support member to decrease fluid pressure. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. Apparatus for controlling the pressure of a parenteral liquid container comprising:
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hanging means for supporting said parenteral liquid containers; telescoping support means for changing the height of said hanger means including a plurality of concentric elongated support members; drive means for vertically displacing at least one of said concentric support members; and an electronic controller for controlling said drive means including means for automatically actuating said drive means for displacing said at least one support member in a vertically upward direction to increase fluid pressure, and means for automatically displacing said at least one support member in a vertically downward direction to decrease fluid pressure.
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Specification