Care or cleaning device for medical instruments and methods

• US 20070031778A1
• Filed: 07/24/2006
• Published: 02/08/2007
• Est. Priority Date: 08/05/2005
• Status: Abandoned Application

• Current Assignee: W&H Dentalwerk Burmoos GmbH (PM Privatstiftung)
• Original Assignee: W&H Dentalwerk Burmoos GmbH (PM Privatstiftung)
• Inventors: Helfenbein, Gerald, Schaffarzick, Daniel
• Application Number:
  US11/492,374
• Publication Number:
  US 20070031778A1
• Time in Patent Office: Days
• US Class Current: 433/82
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61B 90/70 Cleaning devices specially adapted for surgical instruments
• CPC Class Codes: A61C 19/002 Cleaning devices specially adapted for dental instruments disinfecting A61L2/00; cleaning in general B08B
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• CPC Class Codes: A61L 2202/24 Medical instruments, e.g. endoscopes, catheters, sharps

Abstract

A care or cleaning device for a medical instrument and a process for determining whether an instrument is connected to one or more coupling devices of the care or cleaning device. Compressed air supplied to each coupling device through a compressed air line causes a backpressure and an increase in the air pressure applied in the compressed air line. If no instrument is connected to a coupling device, then the compressed air can escape through the comparatively large opening in the coupling device and without any great resistance, so there is no increase in the air pressure in the compressed air line. When an instrument is connected, a sensor element senses the air pressure applied in the compressed air line and sends an input signal to a control device. By analyzing the received input signal, the control device detects whether or not the coupling device is occupied by an instrument. In the same way, this process can also be used to differentiate different types of instruments.

Claims

1. A process for determining whether a coupling device of a care or cleaning device for medical instruments is occupied by an instrument and/or by which type of instrument it is occupied, the process comprising:

conveying compressed air through a coupling device via a compressed air line allocated to the coupling device;

providing a sensor element activated by air pressure applied in the compressed air line, wherein in response to sensing air pressure, the sensor element sends an input signal to a control device of the care or cleaning device; and

detecting the occupancy of the coupling device and/or the type of instrument connected to the coupling device with the control device by analyzing the received input signal.

2. The process according to claim 1, wherein the input signal comprises a measured value determined by the sensor element that reflects the air pressure applied in the compressed air line, and detecting the occupancy of the coupling device and/or the type of instrument connected to the coupling device comprises comparing the received measured value with a reference value,

wherein the control device detects at least one of the following conditions:

the coupling device is occupied by an instrument if the measured value exceeds the reference value, or

the coupling device is not occupied if the measured value does not exceed the reference value, or

the coupling device is occupied by a first type of instrument if the measured value exceeds the reference value, or

the coupling device is occupied by a second type of instrument if the measured value does not exceed the reference value.

3. The process according to claim 1, wherein the input signal comprises a switching signal of a switch, and detecting the occupancy of the coupling device and/or the type of instrument connected to the coupling device comprises detecting the switching signal,

wherein the control device detects at least one of the following conditions:

the coupling device is occupied by an instrument when the coupling device receives a first switching signal, or

the coupling device is not occupied when the coupling device receives a second switching signal, or

the coupling device is occupied by a first type of instrument when the coupling device receives a first switching signal, or

the coupling device is occupied by a second type of instrument when the coupling device receives a second switching signal.

4. The process according to claim 1, wherein the control device sets an occupancy variable for each coupling device, and based on analysis of the received input signal by the control device, the occupancy variable is assigned at least a first state or a second state,

wherein the occupancy variable state is assigned according to at least one of the following conditions:

the coupling device is connected to an instrument, or

the coupling device is not connected to an instrument, or

the coupling device is connected to a first type of instrument, or

the coupling device is connected to a second type of instrument.

5. The process according to claim 4, wherein the control device stores the occupancy variable in a memory.

6. The process according to claim 4, wherein the occupancy variable is assigned at least a first state, a second state or a third state.

7. The process according to claim 1, wherein the control device controls a care or cleaning agent unit of the care or cleaning device before the start of a care or cleaning process, and wherein, upon occurrence of a predetermined event as detected by analysis of the input signal, the control device controls the care or cleaning agent unit to release media,

wherein the predetermined event includes at least one of the following:

the coupling device is occupied by an instrument, or

the coupling device is occupied by a first type of instrument.

8. The process according to claim 4, wherein the control device controls a care or cleaning agent unit of the care or cleaning device before the start of a care or cleaning process, and wherein, upon occurrence of a predetermined event as detected by analysis of the input signal, the control device controls the care or cleaning agent unit to release media,

wherein the predetermined event includes at least one of the following:

the coupling device is occupied by an instrument, or

the coupling device is occupied by a first type of instrument, or

the occupancy variable is assigned to a first state, or

the occupancy variable is assigned to a second state.

9. A care or cleaning device for medical instruments comprising:

one or more coupling devices for connecting one or more instruments,

connections to a compressed air source, a care or cleaning agent unit and a control device, whereby each coupling device is assigned a compressed air line connecting the coupling device to the compressed air source and a sensor element, whereby each sensor element is connected to the control device, and delivers an input signal to the control device when activated, so that by analyzing the input signal, the control device detects the occupancy of at least one coupling device and/or the type of instrument connected to the at least one coupling device,

wherein the sensor element is activated by the air pressure applied in the compressed air line.

10. The care or cleaning device according to claim 9, wherein the sensor element comprises a capacitive, inductive or piezoelectric sensor or a switch.

11. The care or cleaning device according to claim 9, wherein the sensor element comprises a mechanical switch.

12. The care or cleaning device according to claim 9, wherein the care or cleaning device comprises a care space and a partial space separate from the care space, and wherein the sensor element is arranged in the partial space.

13. The care or cleaning device according to claim 9, wherein each sensor element is connected directly to the compressed air line.

14. The care or cleaning device according to claim 9, wherein each sensor is arranged in the compressed air line or in a branch line of the compressed air line.

15. The care or cleaning device according to claim 9, wherein the control device comprises a circuit board which carries at least a part of the sensor elements.

16. The care or cleaning device according to claim 9, further comprising a care or cleaning agent unit controllably connected to the control device, wherein when analysis of the input signal reveals that a coupling device is occupied by an instrument, the care or cleaning agent unit can be controlled by the control device so that media is conveyed from the care or cleaning agent unit into said instrument.

17. The care or cleaning device according to claim 9, further comprising a care or cleaning agent unit controllably connected to the control device, wherein when analysis of the input signal reveals that a coupling device is occupied by a specific type of instrument, the care or cleaning agent unit can be controlled by the control device so that media is conveyed from the care or cleaning agent unit into said instrument.