Deka Products Limited Partnership

Martin D Desch

Larry B Gray

Dirk Albertus Van Der Merwe

Jesse Tetherly Bodwell

Dean Kamen

John Matthew Kerwin

Stephen Lewis Fichera

Jonathan R Thurber

Michael J Baier

David E Collins

Erik N Sabin

Michael G Norris

Jared N Farlow

Daniel F Pawlowski

David Blumberg

Stephan L Fichera

Simon W Lim

John M Kerwin

Thomas A Friedrich

Jonathan Zobro

A syringe pump includes a lead screw, a motor, and a sliding block assembly. The lead screw has threads and the motor is coupled to the lead screw to rotate it. The half-nut housing has a half nut and a barrel cam. The half nut is disposed within the half-nut housing. The half nut has half-nut threads at an end adjacent to the lead screw void. The half nut engages or disengages with the threads of the lead screw. The half nut includes a half-nut cam-follower surface and a half nut slot. The barrel cam is disposed within the half-nut housing and engages with the half-nut cam-follower surface. The barrel cam includes a pin to fit within the half nut slot such that the barrel cam rotates between a first position and a second position to actuate the half nut between the engagement position and the disengagement position, respectively.

Syringe pump and related method

A syringe pump is disclosed that includes a pressure sensor assembly, a plunger, first and second pressure sensors, and a processor. The pressure sensor assembly senses a force and includes the plunger having a sensing surface configured to receive the force, the first pressure sensor operatively coupled to the plunger and configured to estimate the force applied to the sensing surface, and the second pressure sensor operatively coupled to the plunger and configured to estimate the force applied to the sensing surface. The processor is coupled to the first and second pressure sensors to estimate a magnitude of the force.

Syringe pump having a pressure sensor assembly

A syringe pump includes a lead screw, a cam, and an assembly having first and second arms each having a first end and a second end. The second ends of the first and second arms are configured to engage with the lead screw. The first ends of the first and second arms are configured to engage with the cam such that actuation of the cam toward the assembly causes the second ends of the first and second arms to pivotally approach each other. The second ends of the first and second arms each includes threads to engage the lead screw when the second ends of the first and second arms approach each other. The plunger head coupled to the assembly and operative to drive a plunger of a syringe into a barrel of the syringe.

Syringe pump, and related method and system

A syringe pump is disclosed that includes a body, a syringe seat, a syringe actuator, a memory, and one or more processors. The syringe seat is coupled to the body. The syringe actuator is configured to actuate a syringe secured within the syringe seat. The memory is configured to store a plurality of instructions. The one or more processors, in accordance with the plurality of instructions, is/are configured to: prime the syringe pump in a prime phase; determine if an occlusion exists during the prime phase using a first test; stop the prime phase; initiate fluid delivery into a patient; enter into a start-up phase; determine if an occlusion exists using a second test during the start-up phase; transition from the start-up phase into a steady-state phase; and determine if an occlusion exists during the steady-state phase using a third test.

A method for discharging fluid from a syringe and for mitigating occlusion conditions includes actuating the plunger of a syringe into a barrel. The method monitors fluid pressure within the barrel of the syringe and determines that an occlusion exists when the fluid pressure exceeds a predetermined threshold. The method actuates the plunger out of the barrel by a predetermined amount in response to the detected occlusion and actuates the plunger of the syringe into the barrel until a measured fluid pressure within the barrel of the syringe exceeds another predetermined threshold.

A pump for administering an agent to a patient includes a housing, a syringe seat, and a bumper. The syringe seat is coupled to the housing. The bumper is coupled to the housing adjacent to the syringe seat.

Growing community of inventors

Pelham, NH, United States of America

Martin D Desch