Balloon assisted endoscope for viewing a fetus during delivery

• US 6,659,941 B2
• Filed: 08/01/2001
• Issued: 12/09/2003
• Est. Priority Date: 06/19/2001
• Status: Expired due to Term

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Mallinckrodt Incorporated (Mallinckrodt plc)
• Inventors: Walsh, John, Weber, Bryan
• Primary Examiner(s): Leubecker, John P.
• Application Number:
  US09/920,996
• Publication Number:
  US 20020193660A1
• Time in Patent Office: 860 Days
• Field of Search: 600/103, 600/104, 600/115, 600/116, 600/170, 600/118, 600/176, 600/167, 600/182, 600/338, 600/376, 600/511
• US Class Current: 600/116
• CPC Class Codes: A61B 1/00082 Balloons
• CPC Class Codes: A61B 1/06 with illuminating arrangements
• CPC Class Codes: A61B 1/303 for the vagina, i.e. vaginoscopes
• CPC Class Codes: A61B 5/1464 specially adapted for foetal tissue
• CPC Class Codes: A61B 5/205 Determining bladder or urethral pressure
• CPC Class Codes: A61B 5/6886 Monitoring or controlling distance between sensor and tissue

Abstract

A system for visually monitoring the position of a fetal probe in relation to a fetus includes a housing having a longitudinal axis, a first side and a second side, wherein the first and second sides are on substantially opposite sides of the longitudinal axis. An optical imaging assembly is positioned on the housing to visualize along the first side, and a sensor assembly and a spacing mechanism are positioned on a first side of the housing. The spacing mechanism creates a space between the optical imaging assembly and the fetus so as to provide a wide field of view for the optical imaging assembly.

Claims

1. A fetal probe comprising:

a housing comprising a longitudinal axis, a fetal side, and a maternal side, wherein the fetal side and maternal side are positioned on substantially opposite sides of the longitudinal axis;

an imaging assembly positioned on the housing to visualize along the fetal side of the housing;

a sensor assembly coupled to the housing and positioned to monitor along the fetal side of the housing; and

a spacing mechanism positioned on the fetal side of the housing to create a space between the imaging assembly and at least one of a fetus and an in utero environment.

2. The probe of claim 1 wherein the spacing mechanism is an expandable bladder.

3. The probe of claim 2, wherein the sensor assembly comprises an active face including a light source and a light detector, wherein upon deflation of the expandable bladder the active face can contact the fetus.

4. The probe of claim 2 wherein the expandable bladder comprises an inflation channel which can direct at least one of a fluid and a gas to the bladder.

5. The probe of claim 2, wherein the bladder pushes an inactive surface the maternal side of the housing against a maternal tissue.

6. The probe of claim 1 wherein the spacing mechanism is substantially clear.

7. The probe of claim 6 wherein the imaging assembly images the fetus through the substantially clear spacing mechanism.

8. The probe of claim 1 further comprising a handle for placing the housing at a site on the fetus beyond a transcervical region.

9. The probe of claim 1 wherein the imaging assembly is an optical fiber bundle.

10. A fetal probe system comprising:

a body comprising a longitudinal axis, a first side and a second side that are positioned on substantially opposite sides of the longitudinal axis;

a fetal sensor assembly coupled to the first side of the body and positioned to monitor at least one of a fetus and an in utero environment;

an imaging assembly coupled to the first side of the body configured to provide visualization of at least one of the fetus and the in utero environment; and

a spacing means coupled to the first side of the body and positioned to create a space between the imaging assembly and at least one of the fetus and the in utero environment.

11. The system of claim 10 wherein the spacing means creates a field of view for the imaging assembly.

12. The system of claim 10 wherein the body is pushed away from the fetus and against an uterine wall when the spacing means is expanded.

13. The system of claim 10 further comprising an illumination source coupled to the body, wherein the illumination source illuminates at least a portion of the fetus.

14. The system of claim 10 wherein the imaging assembly is operatively coupled to a display device for displaying an image of the fetus.

15. A fetal probe comprising:

a housing comprising a longitudinal axis, a first side and a second side that are positioned on substantially opposite sides of the longitudinal axis;

an imaging assembly coupled to the first side of the housing for visualizing at least one of a fetus and an in utero environment that is positioned on along the first side of the housing;

a sensor assembly coupled to the first side of the housing and positioned to monitor at least one of the fetus and the in utero environment that is positioned along the first side of the housing; and

a spacing mechanism positioned on the first side of the housing to create a space between the imaging assembly and at least one of the fetus and the in utero environment.

16. A fetal probe comprising:

a housing;

an imaging assembly coupled to the housing for visualizing at least one of the fetus and the in utero environment;

a spacing mechanism positioned on the housing to create a space between the imaging assembly and at least one of the fetus and the in utero environment, wherein the spacing mechanism is an expandable bladder; and

a sensor assembly disposed on the housing, wherein the sensor assembly comprises an active face including a light source and a light detector, wherein upon deflation of the expandable bladder, the active face can contact the fetus.

17. The probe of claim 16 wherein the expandable bladder comprises an inflation channel which can direct at least one of a fluid and a gas to the bladder.

18. The probe of claim 16 wherein the housing comprises a fetal side and a maternal side, wherein the bladder pushes the maternal side of the housing against a maternal tissue.

19. The probe of claim 16 wherein the spacing mechanism is substantially clear.