Patent ID: 7971553

Claim:
A catheter for opening a pathway in the cervical tract of a sow and depositing an artificial insemination fluid into the sow's body, the catheter comprising: a tube configured to be inserted into the cervical tract of the sow; and a membrane coupled to said tube and initially positioned inside said tube, wherein said membrane is configured to be extended from an opening in said tube and into the cervical tract by a pressure in the fluid to be deposited into the sow's body, said membrane extends without sliding action between the membrane and the cervical tract, said membrane wall thickness is tapered off towards the distal tip and wherein the thinner membrane wall towards the distal tip allows the membrane to herniate when the membrane encounters an obstruction in the cervical tract, thereby clearing the obstruction and enabling the membrane to continue to extend; wherein the membrane has an open tip, and wherein the opening of the tip can be kept closed by the fluid under pressure to be deposited into the sow's body until the membrane is fully extended into the cervical tract.