Fluid pump for medical purposes and measuring chamber therefor

• US 7,140,843 B2
• Filed: 07/07/2003
• Issued: 11/28/2006
• Est. Priority Date: 07/05/2002
• Status: Expired due to Fees

• Current Assignee: Richard Korejwo
• Original Assignee: Richard Korejwo
• Inventors: Korejwo, Richard
• Primary Examiner(s): Koczo, Jr., Michael
• Application Number:
  US10/614,533
• Publication Number:
  US 20040136839A1
• Time in Patent Office: 1,240 Days
• Field of Search: 417/44.2, 417/44.9, 417/63, 604/65, 604/67, 604/151, 604/153
• US Class Current: 417/44.9
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/60 with identification means
• CPC Class Codes: A61M 3/0201 Cassettes therefor
• CPC Class Codes: A61M 3/0216 Pressure
• CPC Class Codes: A61M 3/0258 by means of electric pumps
• CPC Class Codes: F04B 2205/09 Flow through the pump
• CPC Class Codes: F04B 43/12 having peristaltic action
• CPC Class Codes: F04B 49/10 Other safety measures

Abstract

Fluid pump for medicinal, especially endoscopic, applications having a transport channeled through a drive, a device possessing a measuring chamber for measuring the pressure of the fluid conveyed in the transport channel and control means for the automatic control of the behavior of the pump, in particular its transport behavior, as a function of the measured pressure and as a function of a code value contained in code value carrier means which are provided on or in the measuring chamber, wherein the code value is detected during and/or after fixing of the measuring chamber on the pump housing by read-out means in the fluid pump.

Claims

1. Fluid pump for medicinal, especially endoscopic, applications having a housing, a transport channel conveyed via a drive, a device possessing a measuring chamber for measuring the pressure of the fluid conveyed in the transport channel and control means for the automatic control of the transport properties as a function of the measured pressure, wherein the measuring chamber is fixable to the pump housing, characterised in that the measuring chamber is equipped with code value carrier means containing a code value, and read-out means for registering the code value with respect to fixing of the measuring chamber to the pump housing.

2. Fluid pump according to claim 1, characterised in that the control means contain functions for controlling the behaviour of the pump as a function of the code value read out.

3. Fluid pump according to claim 2, characterised in that the behavior of the pump controlled as a function of the code value comprises the control of the transport properties of the pump as a function of the measured pressure.

4. Fluid pump according to claim 1, characterised in that the transport function of the pump is blockable as a function of the code value read out.

5. Fluid pump according to claim 1, characterised in that the code value carrier means are constructed by a means selected from a group consisting of optical means, electrical means, magnetic means and mechanical means and any combination-thereof and the read-out means are adapted to the letter.

6. Fluid pump according to claim 1, characterised in that the code value contained in the code value carrier means represents information relating to predetermined physical properties.

7. Fluid pump according to claim 1, characterised in that the read-out means contain electric pressure contacts.

8. Fluid pump according to claim 1, characterised in that the code value carrier means contain features selected from a group consisting of prominences and depressions and any combination thereof on the surface of the measuring chamber representing the at least one single code value.

9. Fluid pump according to claim 1, characterised in that the measuring chamber has a housing having means for the unambiguous identification of the spatial orientation of the measuring chamber relative to the pump housing.

10. Fluid pump according to claim 1, characterised in that the measuring chamber possesses a flow channel which is provided with at least one opening to the outside sealed by a membrane and that opposite the opening at least one pressure sensor actively connected to the membrane is arranged in the pump housing.

11. Fluid pump according to claim 10, characterised in that the measuring chamber has a displaceable membrane protector which covers the membrane.

12. Fluid pump according to claim 11, characterised in that the membrane protector comprises a plate covering the membrane at least in the region of the openings and running in guide rails.

13. Fluid pump according to claim 1, characterised in that the measuring chamber and the pump housing possess locking means which hold the measuring chamber by of a means selected from a group consisting of friction fitting and form fitting and any combination thereof after the measuring chamber is fixed on the pump housing.

14. Fluid pump according to claim 1, characterised in that the measuring chamber has a flow channel and a pump segment is provided which is clamped into the flow channel on the inlet side.

15. Fluid pump according to claim 1, characterised in that the measuring chamber has a flow channel and therein a measuring nozzle reducing the flow cross-section of the fluid flowing through the flow channel is provided, wherein an opening is arranged ahead of and an opening after the measuring nozzle in the flow channel.

16. Measuring chamber suitable for a fluid pump according to claim 1, having a housing enclosing a flow channel, characterised in that it is equipped with code value carrier means in which a code value is contained.

17. Measuring chamber according to claim 16, characterised in that the code value carrier means are constructed by a means selected from a group consisting of optical, electric, magnetic and mechanical means.

18. Measuring chamber according to claim 16, characterised in that the code value carrier means contain at least single code value representing at least one of prominences and depressions on the surface of the housing.

19. Measuring chamber according to claim 16, characterised in that the code value contained in the code value contained in the code value carrier means represents information relating to properties wherein the properties are selected from a group consisting of the measuring chamber, the geometric dimensions of the interior of the measuring chamber and the exterior of the measuring chamber relating to the manufacturer and relating to the intended medicinal field of application.

20. The fluid pump of claim 1, wherein the measuring chamber is fixed on the pump housing and the read-out means is on the pump housing and the code value is registered when the measuring chamber is fixed at the pump housing and during the operation of the pump.

21. The fluid pump of claim 6, wherein the information relating to predetermined physical properties is selected from the group consisting of relating to the measuring chamber, the manufacturer, and the intended mode of operation of the pump and any combination thereof.