| 主权项 |
1. A system for transcervical introduction to a patient's uterus, said system comprising:
a radially expandable sleeve having a proximal end, a distal end, and a central passage therebetween, said sleeve comprising a ridge region and a distal balloon which can be inflated to engage an interior surface of a cervical os, the balloon being adapted to be introduced into a cervix in a reduced width configuration and to be immobilized in the cervix in an expanded width configuration, wherein the distal balloon has a cylindrical shape in the expanded width configuration, wherein the ridge region comprises a plurality of ridges and valleys disposed in between one another, and wherein the plurality of ridges and valleys are configured to differentially expand when the sleeve is expanded to the expanded width configuration, a pressurized fluid source connected to selectively inflate the sleeve, wherein the plurality of valleys have a higher durometer than the plurality of ridges, and wherein the pressurized fluid source is configured to apply pressurized fluid to the sleeve to expand the plurality of ridges, but not the plurality of valleys, in accordance with the respective durometers; and a probe shaft slidably received in the central passage of the sleeve, wherein the probe shaft may be advanced and retracted within the central passage while the sleeve remains immobilized in the cervix. |
