Single use intrauterine injector

• US 5,248,304 A
• Filed: 05/29/1992
• Issued: 09/28/1993
• Est. Priority Date: 05/29/1992
• Status: Expired due to Fees

• Current Assignee: Michael Glants, Michael Vigdorchik
• Original Assignee: Michael Glants, Michael Vigdorchik
• Inventors: Glants, Michael, Vigdorchik, Michael
• Primary Examiner(s): Hirsch, Paul J.
• Application Number:
  US07/890,168
• Time in Patent Office: 487 Days
• Field of Search: 604/264, 604/278, 604/279, 604/275, 604/39, 604/43, 604/45, 604/41
• US Class Current: 604/278
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 31/00 Devices for introducing or retaining media, e.g. remedies, in cavities of the body A61M25/00 takes precedence ; introducing or retaining ophthalmic products into the ocular cavities A61F9/0008

Abstract

A single use intrauterine injector for use in hysterosalpingography and other procedures requiring injection of a fluid into a uterus. The injector has an inflatable balloonlike member adjacent its tip for insertion into a cervical canal and by which the injector is held by fluid pressure against the walls of the cervical canal. A stop is provided on the injector for preventing insertion of the balloonlike member into the uterus.

Claims

1. A single use intrauterine injector for use in a patient having a vagina with a vaginal opening and a uterus with a cervical canal comprising a semi-rigid tubular member with an insertable end and an inflatable spool-shaped balloon member adjacent its insertable end for insertion into the cervical canal, said tubular member having a stop means that can be passed through the vaginal opening for abutment with an end of the cervical canal which allows insertion of the spool-shaped balloon member into the cervical canal but which prevents insertion of the spool-shaped balloon member into the uterus, said tubular member having first and second passageways, said first passageway forming a conduit through which fluid can be injected into the uterus and said second passageway being of somewhat lesser length than the first passageway and forming a conduit through which a fluid can be injected into the inflatable spool-shaped balloon member for inflating same whereby the intrauterine injector is held in the cervical canal by fluid pressure exerted by the spool-shaped balloon member against the walls of the cervical canal.

2. The intrauterine injector of claim 1 wherein the stop means is attached to the tubular member at a distance from the insertable end which is slightly more than the length of the cervical canal for an average patient.

3. The intrauterine injector of claim 1 wherein the stop means is about 30 mm from the insertable end.

4. The intrauterine injector of claim 1 wherein the first passageway includes a valve for closing the line to prevent fluid injected into the uterus from flowing back through the first passageway.

5. The intrauterine injector of claim 1 wherein the second passageway includes a valve for closing the line to prevent deflating the balloonlike member.

6. A single use intrauterine injector for use in a patient having a vagina with a vaginal opening and a uterus with a cervical canal comprising a semi-rigid tubular member with an insertable end and an inflatable sleeve for insertion into the cervical can adjacent the insertable end of the tubular member, said sleeve having first and second ends, said tubular member having a stop means that can be passed through the vaginal opening for abutment with an end of the cervical canal which allows insertion of the inflatable sleeve into the cervical canal but which prevents insertion of the inflatable sleeve into the uterus, said sleeve sealingly engaged with the tubular member at said first end and sealingly engaged with the stop means at said second end, said tubular member having first and second passageways, said first passageway forming a conduit through which fluid can be injected into the uterus and said second passageway being of somewhat lesser length than the first passageway and forming a conduit through which a fluid can be injected into the inflatable sleeve for inflating same whereby the intrauterine injector is held in the cervical canal by pressure exerted by the inflatable sleeve against the walls of the cervical canal.

7. The intrauterine injector of claim 6 wherein the stop means is a disc and the disc is attached to the tubular member at a distance from the insertable end which is slightly more than the length of the cervical canal for an average patient.

8. The intrauterine injector of claim 7 wherein the disc is about 30 mm from the insertable end and about 30 mm in diameter.

9. The intrauterine injector of claim 6 wherein the first passageway includes a valve for closing the line to prevent fluid injected into the uterus from flowing back through the first passageway.

10. The intrauterine injector of claim 6 wherein the second passageway includes a valve for closing the line to prevent deflating the balloonlike member.