CN-122028943-A - Pressure output device for sensing fluid pressure in a fluid treatment system

Abstract

The present disclosure describes a Pressure Output Device (POD) assembly for measuring fluid pressure in a fluid handling system. The fluid treatment system may be or include a dialysis machine. In one example, a POD assembly may include a connector configured to couple to a measurement port disposed on an external surface of a fluid handling system, a POD receiver configured to mount on the external surface over the connector, the POD receiver may be configured to couple to the connector, and a POD may include an inlet port, an outlet port, and a sensor port configured to be removably mounted within a POD seat formed in the POD receiver, the sensor port may be disposed within a POD opening of the POD receiver and coupled to the connector to fluidly couple the POD with the measurement port. Other embodiments are described in this disclosure.

Inventors

• P. M. Xiaochehovich
• J. Brugge

Assignees

• 费森尤斯医疗保健控股公司

Dates

Publication Date

20260512

Application Date

20240909

Priority Date

20231016

Claims (20)

1. 1. A pressure output device POD assembly comprising: a connector configured to be coupled to a measurement port disposed on an outer surface of the fluid handling system; a POD receptacle configured to be mountable on the outer surface over the connector, the POD receptacle configured to be coupled to the connector, and A POD comprising an inlet port, an outlet port, and a sensor port, the POD configured to be removably mounted within a POD seat formed in the POD housing, wherein the sensor port is disposed within a POD opening of the POD housing and coupled to the connector to fluidly couple the POD with the measurement port.
2. 2. The POD assembly of claim 1, wherein the connector comprises: a boot-type connection connector configured to be coupled to the measurement port, and A cover configured to be mounted over the connecting element.
3. 3. The POD assembly of claim 1, wherein the boot-style connector comprises at least one flange configured to engage at least one groove of the boot when the boot is mounted over the boot-style connector.
4. 4. The POD assembly of claim 1, wherein the connector comprises a direct-connect connector having a POD end configured to engage the POD receptacle.
5. 5. The POD assembly of claim 4, wherein the direct-connect connector comprises a rib configured to engage at least one engagement structure of the POD when the POD is mounted over the direct-connect connector.
6. 6. The POD assembly of claim 1 wherein the connector is configured to form a luer connection with the measurement port.
7. 7. The POD assembly of claim 1 wherein the POD receptacle is configured to be coupled to the connector by a set screw fastener.
8. 8. The POD assembly of claim 1, wherein the POD is configured to be mounted within the POD housing by pushing the POD along the POD opening toward the fluid handling system until the POD seats within the POD seat.
9. 9. The POD assembly of claim 1, wherein the POD forms an interference fit with the POD mount when mounted within the POD housing.
10. 10. The POD assembly of claim 1, wherein the outlet port is disposed at a top position vertically above a bottom position of the inlet port.
11. 11. The POD assembly of claim 10 wherein the fluid flow within the chamber is a rotating fluid flow, rotating from the inlet port to the outlet port.
12. 12. The POD assembly of claim 1, wherein the fluid handling device is a hemodialysis HD machine.
13. 13. The POD assembly of claim 1, wherein the measurement port is a pressure port of a hemodialysis HD machine.
14. 14. The POD assembly of claim 13, wherein the POD is fluidly coupled to a pressure sensor of a hemodialysis HD machine to provide a pressure reading of arterial or venous blood flowing through an extracorporeal circulation circuit.
15. 15. The POD assembly of claim 1, wherein the POD comprises a flange configured to engage a membrane of the POD to form an indent on the membrane to prevent airlock between the membrane and an inner surface of the POD.
16. 16. A method of measuring blood pressure flowing through an extracorporeal circuit of a dialysis machine, wherein the method comprises: mounting a pressure output device POD including an inlet port, an outlet port, and a sensor port in a POD assembly, the POD assembly comprising: a connector configured to be coupled to a pressure port disposed on an outer surface of the dialysis machine, and A POD receiver configured to be mountable on the outer surface over the connector, the POD receiver configured to be coupleable to the connector; Wherein the POD is configured to be detachably mounted in a POD seat formed in the POD housing, wherein the sensor port is arranged in a POD opening of the POD housing and coupled to the connector to fluidly couple the POD with the pressure port, and Fluid pressure is measured using a pressure sensor that detects movement of the membrane of the POD caused by blood flowing through the POD.
17. 17. The method of claim 16, wherein the connector comprises: a boot-type connection connector configured to be coupled to the measurement port, and A cover configured to be mountable over the connecting element.
18. 18. The method of claim 16, wherein the connector comprises a direct-connect connector having a POD end configured to engage the POD receptacle.
19. 19. The POD assembly of claim 1, wherein the outlet port is disposed at a top position vertically above a bottom position of the inlet port.
20. 20. The POD assembly of claim 10 wherein the fluid flow within the chamber is a rotating fluid flow, rotating from the inlet port to the outlet port.

Description

Pressure output device for sensing fluid pressure in a fluid treatment system Cross Reference to Related Applications The present application claims the benefit of U.S. patent application Ser. No. 18/380,298, entitled "pressure output device for sensing fluid pressure in a fluid treatment System," filed on 10/16 of 2023, the entire contents of which are incorporated herein by reference. Technical Field The present disclosure relates generally to devices and processes for facilitating pressure measurement in a fluid treatment system, such as a pressure output device for an extracorporeal circulation circuit of a dialysis system. Background Dialysis machines typically monitor the pressure in an extracorporeal blood circulation circuit, in particular, the pressure from a blood chamber containing a blood-air interface. The blood chamber may be connected to a pressure port of a dialysis machine. The diaphragm may be disposed between the blood chamber and the pressure port. The diaphragm provides a sterile barrier for the blood circuit, preventing blood from contaminating the machine, while allowing air pressure to pass through the diaphragm and act on the pressure sensor inside the machine. In some systems, the diaphragm may be configured as an arterial and venous pressure monitoring component or "pressure pod". These pressure chambers may include molded plastic components integrated into the blood tubing system for transmitting pressure information from the blood side of the pressure chamber through a thin diaphragm to a pressure sensor or other pressure measurement component of the machine. Pressure monitoring components, such as diaphragms, pressure chambers, blood lines, and/or the like, require replacement, adjustment, and other maintenance. Conventional pressure monitoring components, particularly pressure chambers, are difficult to disassemble, especially for patients, caregivers, and healthcare workers who are not trained in specialized machine maintenance techniques. For example, conventional pressure chambers are typically connected to the machine pressure ports by connection mechanisms that are very challenging, if not inoperable, for dialysis patients that have difficulty manipulating small, complex connections (e.g., luer locking fittings). In view of these and other considerations, the present improvements may have utility. Disclosure of Invention This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to necessarily identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. In one exemplary embodiment, a Pressure Output Device (POD) assembly may include a connector configured to be coupled to a measurement port disposed on an external surface of a fluid handling system, a POD receiver configured to be mounted on the external surface over the connector, the POD receiver configured to be coupled to the connector, and a POD that may include an inlet port, an outlet port, and a sensor port, the POD configured to be removably mounted within a POD seat formed in the POD receiver, wherein the sensor port is disposed within a POD opening of the POD receiver and coupled to the connector to fluidly couple the POD with the measurement port. In some examples of the POD assembly, the connector may include a boot-type connection connector configured to be coupled to the measurement port and a boot configured to be mounted over the connection element. In various examples of the POD assembly, the boot-type connector may include at least one flange configured to engage at least one groove of the boot when the boot is mounted over the boot-type connector. In some examples of the POD assembly, the connector may include a direct-connect connector having a POD end configured to engage the POD housing. In various examples of the POD assembly, the direct-connect connector may include a rib configured to be able to engage at least one engagement structure of the POD housing when the POD housing is mounted over the direct-connect connector. In some examples of the POD assembly, the connector is configured to form a luer connection with the measurement port. In various examples of the POD assembly, the POD housing is configured to be coupled to the connector by a set screw fastener. In some examples of the POD assembly, the POD is configured to be mounted within the POD housing by pushing the POD along the POD opening toward the fluid handling system until the POD seats within the POD seat. In various examples of the POD assembly, the POD forms an interference fit with the POD mount when mounted within the POD housing. In some examples of the POD assembly, the outlet port is disposed at a top position vertically above a bottom position of the inlet port. In various examples of the POD assembly, th