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1. WO2004058057 - DISPOSITIF DE CAPTEUR POUR SURVEILLER UNE PERFUSION DANS UN TISSU

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

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Claims
1. A sensor device for monitoring perfusion of tissue, having a base portion and at least a first elongate probe member, the base portion and the first probe member being so arranged that, in use, the base portion can be positioned in abutment with a surface of said tissue whilst the first probe member extends into said tissue, and further
comprising a first optical sensor housed within said first probe member for determining a first analyte in said tissue, and a second optical sensor for determining a second analyte in said tissue.
2. A sensor device according to claim 1, which comprises at least one further sensor for at least one further analyte in said tissue.
3. A sensor device according to claim 1 or claim 2, in which there is a first elongate probe member housing the first optical sensor and a second elongate probe member housing the second optical sensor.
4. A sensor device according to claim 3, in which there is a third sensor, said third sensor being housed in one of said first and second elongate probe members.
5. A sensor device according to claim 4, in which there is a third elongate probe member comprising a third optical sensor.

6. A sensor device according to any one of the preceding claims, comprising a sensor for a physical parameter.
7. A sensor device according to claim 6, in which the physical parameter is temperature.
8. A sensor according to any one of the preceding claims, comprising at least one additional elongate probe member arranged for extending into said tissue.
9. A sensor device according to any one of the preceding claims, which comprises at least one sensor selected from optical p02 sensors, optical pC02 sensors and optical pH sensors .
10. A sensor device according to claim 9, which comprises a p02 sensor, a PC02 sensor and a pH sensor.
11. A sensor device according to claim 7, in which the pH and P02 sensors are located in a common elongate probe member.
12. A sensor device according to claim 10, in which a p02 sensor, a pC02 sensor and a pH sensor are housed in a common elongate probe member.
13. A sensor device according to any one of the preceding claims, in which the or each elongate probe member comprises a cylindrical casing.
14. A sensor device according to claim 13, in which the cylindrical casing is of annular cross-section.

15. A sensor device according to any one of the preceding claims, in which the or each elongate probe member has a length of at least 5mm.
16. A sensor device according to any one of the preceding claims, in which the or each elongate probe member has a length of not more than 12mm.
17. A sensor device according to any one of the preceding claims in which the or each probe member has a housing with an external diameter of not exceeding 2 mm.
18. A sensor device according to any one of the preceding claims in which the or each probe member has a housing with an external diameter of from 0.5mm to 1mm.
19. A sensor device according to any one of the preceding claims, in which the or each elongate probe member comprises a housing of a biocompatible material.
20. A sensor device according to claim 19, in which the housing is of a biocompatible metallic material.
21. A sensor device according to any one of the preceding claims, in which the base portion is of a synthetic polymer material .
22. A sensor device according to any one of the preceding claims, in which the base portion is disk-shaped.
23. A method of monitoring a human or animal patient comprising inserting into a heart wall of said patient an optical sensor for determining at least one analyte selected from p02 and pC02 and monitoring said at least one analyte in said heart wall.
24. A method of monitoring a human or animal patient comprising inserting into a heart wall a sensing arrangement for determining first and second analytes and monitoring said first and second analytes.
25. A method according to claim 24, in which said sensing arrangement comprises first and second optical sensors which are inserted into said heart wall in fixed, spaced
relationship and retained in said relationship whilst in situ in said heart wall.
26. A method according to claim 25, in which a third sensor is inserted into said heart wall.
27. A method according to claim 26, in which said third sensor is inserted in fixed, spaced relationship with respect to said first and second sensors and retained in said relationship whilst in situ in said heart wall.
28. A method according to any one of claims 23 to 27, in which at least two analytes are monitored by at least two optical sensors housed in a common housing.
29. A method according to any of claims 23 to 28, in which there is used a sensor device according to any one of claims 2 to 22.

30. A method according to claim 28, in which the sensors are held in said fixed, spaced relationship by locating them in two or more spaced probes, at least one of said probes comprising at least two optical sensors.
31. A method according to claim 30 in which the probes are attached to a common base for maintaining a substantially constant separation between the probes.