Method and system for controllably administering fluid to a patient and/or for controllably withdrawing fluid from the patient
First Claim
1. A system for controllably administering fluid to a patient and/or for controllably withdrawing fluid from the patient, the system comprising:
- an infusion needle;
a syringe for holding a quantity of fluid, the syringe being in fluid communication with the infusion needle, the syringe comprising a syringe body and a syringe plunger, the syringe plunger comprising a column portion having a proximal end and a distal end, the syringe plunger further comprising a handle disposed at the proximal end of the column portion, the distal end of the column portion being insertable into the syringe body, the column portion comprising a rack;
a bi-directional pump adapted to be operably coupled to the infusion needle for creating fluid flow through the infusion needle, the bi-directional pump comprising a gear engageable with the rack for driving the rack so as to move the syringe plunger relative to the syringe body in order to alternately produce positive and negative fluid flow in the infusion needle; and
a hands-free switch for activating and/or deactivating the bi-directional pump, the hands-free switch comprising a first switch and a second switch, wherein actuation of the first switch causes the bi-directional pump to expel fluid from the syringe body, wherein actuation of the second switch causes the bi-directional pump to draw fluid into the syringe body, wherein the bi-directional pump is inactive when neither the first switch nor the second switch is actuated, and wherein at least one of the first switch and the second switch comprises a resiliently-compressible tube and a pressure-sensitive switch disposed within a void of the resiliently-compressible tube.
3 Assignments
0 Petitions
Accused Products
Abstract
Method and system for controllably administering and/or withdrawing fluid from a patient. In one embodiment, the system may include a needle assembly, an ultrasound imager, a fluid supply storage unit, a waste storage unit, a fluid pump, and a foot pedal assembly. A syringe may serve as the fluid supply storage unit and the waste storage unit. The pump may include a bi-directional motor and a gear coupled to the motor. The gear may be engageable with a rack on the syringe plunger to drive the plunger either for fluid aspiration or infusion. Depression of one portion of the foot pedal assembly causes the motor to drive the gear in one direction, and depression of another portion of the foot pedal assembly causes the motor to drive the gear the other direction. The system may include a control device to keep pressure in the fluid path from exceeding a limit.
44 Citations
32 Claims
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1. A system for controllably administering fluid to a patient and/or for controllably withdrawing fluid from the patient, the system comprising:
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an infusion needle; a syringe for holding a quantity of fluid, the syringe being in fluid communication with the infusion needle, the syringe comprising a syringe body and a syringe plunger, the syringe plunger comprising a column portion having a proximal end and a distal end, the syringe plunger further comprising a handle disposed at the proximal end of the column portion, the distal end of the column portion being insertable into the syringe body, the column portion comprising a rack; a bi-directional pump adapted to be operably coupled to the infusion needle for creating fluid flow through the infusion needle, the bi-directional pump comprising a gear engageable with the rack for driving the rack so as to move the syringe plunger relative to the syringe body in order to alternately produce positive and negative fluid flow in the infusion needle; and a hands-free switch for activating and/or deactivating the bi-directional pump, the hands-free switch comprising a first switch and a second switch, wherein actuation of the first switch causes the bi-directional pump to expel fluid from the syringe body, wherein actuation of the second switch causes the bi-directional pump to draw fluid into the syringe body, wherein the bi-directional pump is inactive when neither the first switch nor the second switch is actuated, and wherein at least one of the first switch and the second switch comprises a resiliently-compressible tube and a pressure-sensitive switch disposed within a void of the resiliently-compressible tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for controllably administering fluid to a patient and/or for controllably withdrawing fluid from the patient, the system comprising:
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a syringe/pump assembly, the syringe/pump assembly comprising a syringe, the syringe comprising a syringe body and a syringe plunger, the syringe plunger comprising a column portion having a proximal end and a distal end, the syringe plunger further comprising a handle disposed at the proximal end of the column portion, the distal end of the column portion being insertable into the syringe body, the column portion comprising a rack extending along a length of the column portion, a housing, the housing comprising a top wall adapted to support the syringe body, the top wall comprising a first transverse opening and a second transverse opening, a bi-directional pump, the bi-directional pump comprising a motor and a gear, the motor being disposed within the housing, the gear being coupled to the motor and extending through the first transverse opening in the top wall of the housing, the gear being engageable with the rack of the syringe plunger for driving the rack so as to move the syringe plunger relative to the syringe body to alternately produce positive and negative fluid flow in the infusion needle, an adaptor, the adaptor being coupled to the syringe and comprising a projection, and a locking clip mounted on the housing, the locking clip extending through the second transverse opening and releasably engaging the projection of the adaptor; an infusion needle, the infusion needle being operatively coupled to the syringe; and a hands-free switch for activating and/or deactivating the motor. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification