IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0021125
(2013-09-09)
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등록번호 |
US-8852130
(2014-10-07)
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발명자
/ 주소 |
|
출원인 / 주소 |
- Biosense Webster (Israel), Ltd.
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인용정보 |
피인용 횟수 :
2 인용 특허 :
97 |
초록
▼
A medical probe, including a flexible insertion tube, having a distal end for insertion into a body cavity of a patient and which is configured to be brought into contact with tissue in the body cavity. The probe further includes a sensor tube of an elastic material, contained inside the distal end
A medical probe, including a flexible insertion tube, having a distal end for insertion into a body cavity of a patient and which is configured to be brought into contact with tissue in the body cavity. The probe further includes a sensor tube of an elastic material, contained inside the distal end of the insertion tube and configured to deform in response to forces exerted by the tissue on the distal end. The probe also includes a plurality of strain gauges fixedly attached to a surface of the sensor tube at different, respective locations and configured to generate respective signals in response to deformations of the sensor tube.
대표청구항
▼
1. A medical probe, comprising: a flexible insertion tube, having a distal end for insertion into a body cavity of a patient and which is configured to be brought into contact with tissue in the body cavity; a sensor tube comprising an elastic material, contained inside the distal end of the inserti
1. A medical probe, comprising: a flexible insertion tube, having a distal end for insertion into a body cavity of a patient and which is configured to be brought into contact with tissue in the body cavity; a sensor tube comprising an elastic material, contained inside the distal end of the insertion tube and configured to deform in response to forces exerted by the tissue on the distal end;a plurality of strain gauges fixedly attached to a surface of the sensor tube at different, respective locations and configured to generate respective signals in response to deformations of the sensor tube; andat least one temperature-compensating strain gauge configured to generate signals to compensate for changes in temperature of the plurality of strain gauges, wherein the at least one temperature-compensating strain gauge is mounted on a block having a block-thermal mass, and wherein the sensor tube has a sensor-tube-thermal mass equal to the block-thermal mass. 2. The probe according to claim 1, wherein the sensor tube is fixedly attached inside the distal end to the insertion tube. 3. The probe according to claim 1, wherein the surface of the sensor tube comprises an outer curved surface of the sensor tube. 4. The probe according to claim 1, wherein the respective signals are configured to generate a magnitude and a direction of a pressure on a termination of the distal end. 5. The probe according to claim 1, wherein the respective signals are configured to generate a magnitude and a direction of a deflection of a termination of the distal end. 6. The probe according to claim 1, wherein the plurality of strain gauges are symmetrically disposed with respect to an axis of the sensor tube. 7. The probe according to claim 1, wherein the plurality of strain gauges are positioned on a circumference of the surface of the sensor tube, and wherein the circumference is centrally located with respect to the sensor tube. 8. The probe according to claim 1, wherein the plurality of strain gauges have respective gauge directions, and wherein the gauges are fixedly attached to the surface of the sensor tube so that the respective gauge directions are parallel to an axis of the sensor tube. 9. The probe according to claim 1, wherein the at least one temperature-compensating strain gauge is mounted on the block in a location that does not deform in response to deformations of the sensor tube. 10. The probe according to claim 1, wherein the at least one temperature-compensating strain gauge has a temperature-compensating strain gauge direction configured to be orthogonal to an axis of the sensor tube. 11. A method for producing a medical probe, comprising: providing a flexible insertion tube, having a distal end for insertion into a body cavity of a patient and which is configured to be brought into contact with tissue in the body cavity; installing a sensor tube comprising an elastic material inside the distal end of the insertion tube, the sensor tube being configured to deform in response to forces exerted by the tissue on the distal end;fixedly attaching a plurality of strain gauges to a surface of the sensor tube at different, respective locations, the strain gauges being configured to generate respective signals in response to deformations of the sensor tube; andproviding at least one temperature-compensating strain gauge configured to generate signals to compensate for changes in temperature of the plurality of strain gauges, wherein, the at least one temperature-compensating strain gauge is mounted on a block having a block-thermal mass, and wherein the sensor tube has a sensor-tube-thermal mass equal to the block-thermal mass. 12. The method according to claim 11, wherein the sensor tube is fixedly attached inside the distal end to the insertion tube. 13. The method according to claim 11, wherein the surface of the sensor tube comprises an outer curved surface of the sensor tube. 14. The method according to claim 11, wherein the respective signals are configured to generate a magnitude and a direction of a pressure on a termination of the distal end. 15. The method according to claim 11, wherein the respective signals are configured to generate a magnitude and a direction of a deflection of a termination of the distal end. 16. The method according to claim 11, wherein the plurality of strain gauges are symmetrically disposed with respect to an axis of the sensor tube. 17. The method according to claim 11, wherein the plurality of strain gauges are positioned on a circumference of the surface of the sensor tube, and wherein the circumference is centrally located with respect to the sensor tube. 18. The method according to claim 11, wherein the plurality of strain gauges have respective gauge directions, and wherein the gauges are fixedly attached to the surface of the sensor tube so that the respective gauge directions are parallel to an axis of the sensor tube. 19. The method according to claim 11, wherein the at least one temperature-compensating strain gauge is mounted on the block in a location that does not deform in response to deformations of the sensor tube. 20. The method according to claim 11, wherein the at least one temperature-compensating strain gauge has a temperature-compensating strain gauge direction configured to be orthogonal to an axis of the sensor tube.
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