Shockwave system controlled dependent on patient's blood pressure

• US 20070016115A1
• Filed: 06/30/2006
• Published: 01/18/2007
• Est. Priority Date: 07/04/2005
• Status: Active Grant

• Current Assignee: Siemens Healthcare GMBH (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Mertelmeier, Thomas, Kruft, Werner, Hoheisel, Martin, Meinert, Christian, Fehre, Jens, Buchholtz, Gerhard, Granz, Bernd, Rattner, Manfred, Mahler, Matthias, Nanke, Ralf, Lanski, Markus
• Granted Patent: US 8,002,718 B2
• Time in Patent Office: Days
• US Class Current: 601/4
• CPC Class Codes: A61B 17/22004 using mechanical vibrations, e.g. ultrasonic shock waves A61B17/225 takes precedence
• CPC Class Codes: A61B 17/2251 characterised by coupling elements between the apparatus, e.g. shock wave apparatus or locating means, and the patient, e.g. details of bags, pressure control of bag on patient
• CPC Class Codes: A61B 2017/00022 Sensing or detecting at the treatment site
• CPC Class Codes: A61B 2017/00044 Sensing electrocardiography, i.e. ECG
• CPC Class Codes: A61B 2017/00119 alarm; indicating an abnormal situation
• CPC Class Codes: A61B 2017/00194 Means for setting or varying the repetition rate
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence

Abstract

In a shockwave system with a shockwave source for treatment of a patient with shockwaves, a control and evaluation unit for evaluating an input signal supplied directly thereto that is correlated with a blood pressure value of the patient determined during the treatment, and controls the shockwave source dependent on the input signal.

Claims

1. A shockwave system comprising:

a shockwave source that emits shockwaves adapted to interact with a patient to disintegrate a calculus in the patient during a treatment of the patient; and

a control and evaluation unit having an input adapted to receive an input signal that is dependent on a blood pressure value of the patient during said treatment, said control and evaluation unit comprising circuitry that generates a blood pressure value-dependent output signal from said input signal, said control and evaluation unit being in communication with said shockwave source and said shockwave source being controlled during said treatment dependent on said blood pressure value-dependent output signal.

2. A shockwave system as claimed in claim 1 wherein said input of said control and evaluation unit is adapted to receive, and wherein said circuitry evaluates, an input signal that is dependent on said blood pressure value by having a signal state indicating said blood pressure value exceeds a critical value and a state indicating said blood pressure value is acceptable.

3. A shockwave system as claimed in claim 1 wherein said input of said control and evaluation unit is adapted to receive, and wherein said circuitry evaluates, an input signal replicating said blood pressure value.

4. A shockwave system as claimed in claim 1 comprising a threshold switch supplied with a signal representing said blood pressure value, said threshold switch being connected to said input of said control and evaluation unit and supplying said signal representing said blood pressure value, as said input signal, to said input of said control and evaluation unit only if said signal representing said blood pressure value is below a predetermined threshold.

5. A shockwave system as claimed in claim 4 wherein said threshold switch exhibits a hysteresis value for said blood pressure value.

6. A shockwave system as claimed in claim 5 wherein at least one of said threshold and said hysteresis value is adjustable.

7. A shockwave system as claimed in claim 5 comprising a signaling device that emits a humanly perceptible signal if said blood pressure value approaches or reaches at least one of said threshold and said hysteresis value.

8. A shockwave system as claimed in claim 4 wherein said threshold is adjustable.

9. A shockwave system as claimed in claim 4 comprising a signaling device that emits a humanly perceptible signal if said blood pressure value approaches or reaches said threshold.

10. A shockwave system as claimed in claim 1 comprising a control unit that enables triggering of said shockwave source to emit shockwaves, said control unit comprising an ECG trigger input, and wherein said control and evaluation unit comprises an upstream device connected to said ECG trigger input, said upstream device having a further input adapted to receive an ECG signal, and generating said output signal dependent on said signal dependent on said blood pressure value and said ECG signal.