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Surveillance for postpartum hemorrhage

A uterus, muscle tissue technology, used in the field of monitoring human subjects, can solve problems such as maternal blood loss

Active Publication Date: 2015-10-21
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the above goes unchecked, the mother experiences severe blood loss and this can be fatal

Method used

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  • Surveillance for postpartum hemorrhage
  • Surveillance for postpartum hemorrhage
  • Surveillance for postpartum hemorrhage

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Embodiment Construction

[0020] The disclosed devices, systems and methods are described in detail below with reference to the accompanying drawings.

[0021] Figure 1 is a schematic diagram of an embodiment of the disclosed apparatus. It includes an ultrasound transducer 101 for applying ultrasound energy focused at a region of uterine musculature of a subject to create acoustic radiation forces to generate shear waves in the uterine musculature. The ultrasound transducer 101 is suitably driven by a drive 105 . The shear waves thus generate radiation that passes through the uterine musculature. Another ultrasound transducer 103 radiates ultrasound into the subject's midriff. The transducer 103 receives the reflected ultrasound and the analysis unit 107 analyzes the electrical signal output by the transducer 103 and measures the propagation velocity of the shear wave in a known manner and estimates the tension of the uterine musculature based on the propagation velocity. The results of the analysis...

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Abstract

A device for monitoring a subject for postpartum hemorrhage is disclosed. It comprises an ultrasound transducer for applying ultrasound energy focused at a region of uterine musculature of the subject for creating an acoustic radiation force for generating a shear wave in the uterine musculature. A second ultrasound transducer radiates ultrasound energy into the subject and receives the echoed ultrasound energy. By analyzing a signal representative of the received echoed ultrasound energy the speed of propagation of the shear wave in the uterine musculature is determined. The value of the tone of the uterine musculature is estimated based on the speed of propagation of the shear wave and conveyed to a user. Further, a device for detecting and locating a hemorrhage and estimating its severity are also disclosed.

Description

technical field [0001] The present disclosure is generally in the field of monitoring human subjects. In particular, it is in the field of non-invasive monitoring of human subjects for postpartum hemorrhage using ultrasound. Background technique [0002] Worldwide, many childbirth-related deaths are caused by postpartum hemorrhage (PPH). Usually, the uterus shrinks to a near-normal size shortly after delivery. When the uterus contracts, the blood vessels in the uterine muscle tissue constrict and uterine bleeding stops. However, if there is residual placenta in the uterus, or if the uterine muscle tissue has lost tone for other reasons—a condition called uterine atonia—the bleeding will not stop. If the above goes unchecked, the mother experiences severe blood loss and this can be fatal. Often when a baby is born, the caregiver's attention is focused on the newborn, and if the mother is left alone for even a short period of time and the mother is bleeding, the results ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B8/08A61B5/00
CPCA61B8/485A61B5/0011A61B5/4356A61B8/085A61B8/0866A61B8/4227A61B8/56
Inventor P·瓦集内帕里R·S·西索迪亚C·菲尔雄A·阿南德H·谢P·凯瑟沃浦L·古普塔J·彼得鲁齐洛
Owner KONINK PHILIPS ELECTRONICS NV
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