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NCT Number: NCT05775913

Clinical Evaluation of a Tubal Selective Delivery System

A single center study to evaluate the performance and optimize the design of a novel intrauterine catheter system intended as a nonsignificant risk medical device to aid in evaluating tubal patency as part of the initial diagnostic workup for infertility.

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Key information

Age range

18 year–50 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

About this study

In this study, the investigators will perform transcervical placement of a novel tubal selective delivery catheter system in a controlled clinical setting, using ultrasound imaging to evaluate device performance in a short procedure that will not require sedation or general anesthesia (local anesthesia may be used). The investigator will confirm the position of the device, inflate the balloons, and administer a small volume (10 mL) of an FDA-approved contrast foam. The investigator will then remove the device at the end of the procedure. This study will evaluate performance of the device, ease of use, and patient experience. It will also evaluate the patient experience before, during, and after the procedure. This device is meant to be used to assess tubal patency as part of the initial diagnostic workup for infertility, and use of the device may reduce the need for HSG.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Literate in English
  • Able to understand and sign an IRB-approved informed consent form
  • Willing to complete a pre-procedure questionnaire
  • Regular menstrual cycles (24- 38 days)
  • Good general health
  • Able and willing to comply with all study tests, procedures, and assessment tools
  • Uterine sound size between 6 - 10 cm
  • Agree to use a non-hormonal method of contraception or avoid vaginal intercourse during the catheter evaluation cycle
  • In compliance with cervical cancer screening guidelines per the American Society for Colposcopy and Cervical Pathology (ASCCP) guidelines without evidence of disease.

Alternatively, the subject must have had a colposcopy performed within the appropriate screen time frame, and prior to the study catheter insertion that showed no evidence of dysplasia requiring treatment or further diagnostic procedures or follow-up for at least 6 months

Exclusion criteria

  • Currently pregnant as confirmed by positive high-sensitivity urine pregnancy test
  • Currently using hormonal contraception. Must have at least one natural cycle (two menses) prior to participation if recently discontinued hormonal contraception.
  • Currently using an intrauterine device (IUD). Must discontinue at least 30 days prior to Visit 2
  • Allergy or hypersensitive to radio-opaque contrast, ExEm foam, both doxycycline and azithromycin (allergy to one not exclusionary if can take the alternative), or lidocaine
  • History or physical findings recognized as clinically significant by the investigator, such as symptoms of untreated or recent pelvic infection
  • History of involuntary female infertility
  • History of gynecologic surgery involving the uterus, fallopian tubes, or ovaries (except single cesarean section)
  • History of prior permanent contraception procedure (any technique, abdominal laparoscopic, or hysteroscopic)
  • Pelvic exam findings considered clinically-significant by the investigator such as uterine fibroids, pelvic tenderness, or prolapse
  • Inability to tolerate placement of a tenaculum and/or uterine sound during screening exam
  • Any congenital or acquired uterine anomaly that may complicate study drug placement, such as:
  • Submucosal uterine leiomyoma
  • Asherman's syndromes
  • Pedunculated polyps
  • Bicornuate uterus
  • Didelphys or uterine septa
  • Any distortions of the uterine cavity (e.g., fibroids), that, in the opinion of the investigator, are likely to cause issues during insertion, use or removal of the TSDS.
  • Known anatomical abnormalities of the cervix such as severe cervical stenosis, prior trachelectomy or extensive conization that, in the opinion of the investigator would prevent cervical dilation and device placement
  • Untreated or unresolved acute cervicitis or vaginitis
  • Known or suspected human immunodeficiency virus (HIV) infection or clinical AIDS
  • Screening transabdominal or transvaginal ultrasound findings with poor imaging quality, or anatomic abnormalities considered clinically important or likely to interfere with assessment of the test device, as assessed by the investigator

Treatment and study plan

Tubal Selective Delivery System (TSDS)

Device

A novel tubal selective delivery catheter system for selective delivery of administered agents to the fallopian tubes without entry of any portion of the catheter into the tubes.

Primary outcomes

  1. Clinical performance of catheter during insertion of device

    Time frame: Immediately post-procedure within 30 minutes

    Clinician impression of catheter performance during insertion of device. Performance is categorized as one of three levels: excellent, acceptable, or fail. The number of participants in each category will be reported, with categories defined as:

    Excellent: Clinician can place the insertion tube transcervically without dilation, and advance the obturator to expand the device without the use of imaging guidance.

    Acceptable: Cervical dilation required, but easy to advance the obturator to expand the device without the use of imaging guidance

    Fail: Unable to place the insertion tube

  2. Expansion of arms and dual catheters

    Time frame: During procedure immediately following attempt to position device

    Expansion of arms and dual catheters in the two uterine cornua. Performance is categorized as one of three levels: excellent, acceptable, or fail. The number of participants in each category will be reported, with categories defined as:

    Excellent: Arms extend into bilateral cornua following transcervical insertion after initial expansion. Ultrasound confirms extension but is not needed

    Acceptable: Ultrasound is required to position arms, but expansion is successful after one or two attempts.

    Fail: Clinician is unable to position arms into cornua.

  3. Inflation of dual balloons

    Time frame: During procedure immediate following attempt to inflate balloons

    Inflation of the dual balloons. Performance is categorized as one of three levels: excellent, acceptable, or fail. The number of participants in each category will be reported, with categories defined as:

    Excellent: Inflation of the dual balloons on first attempt by the clinician with no leakage or bad connections. This is confirmed by ultrasound.

    Acceptable: Inflation requires more than one attempt but is ultimately successful.

    Fail: Clinician is unable to inflate balloons due to high pressure or subject pain.

  4. Delivery of saline

    Time frame: During procedure immediate following attempt to administer saline

    Delivery of saline. Performance is categorized as one of three levels: excellent, acceptable, or fail. The number of participants in each category will be reported, with categories defined as:

    Excellent: Successful administration of saline at low pressure (confirmed by ultrasound) with no leakage or bad connections.

    Acceptable: Some leakage of saline, but clinician is able to observe flow in tubes.

    Fail: Clinician unable to administer saline due to high pressure/pain, leakage or bad connections.

  5. Delivery of ExEm foam

    Time frame: During procedure immediate following attempt to administer ExEm foam

    Delivery of ExEm foam. Performance is categorized as one of three levels: excellent, acceptable, or fail. The number of participants in each category will be reported, with categories defined as:

    Excellent: Delivery of foam at low pressure with confirmation of tubal patency via ultrasound and with no leakage or bad connections.

    Acceptable: Some leakage of ExEm in uterine cavity, but clinician is able to observe flow in tubes.

    Fail: Clinician unable to administer ExEm due to high pressure/pain, leakage or bad connections.

  6. Clinician impression of device removal

    Time frame: During procedure immediate following attempt remove device

    Clinician impression of device removal. Performance is categorized as one of three levels: excellent, acceptable, or fail. The number of participants in each category will be reported, with categories defined as:

    Excellent: Clinician can deflate balloons, collapse frame, and withdraw insertion tube without difficulty at the end of procedure without the use of imaging guidance.

Secondary outcomes

  1. Tolerability and ease of use - Provider experience evaluation

    Time frame: Immediately Post-procedure (within 30 minutes)

    The clinician placing the device will evaluate ease of use using a series of 100 mm visual analog scale (anchors: 0 extremely easy; 100 extremely difficult/impossible) to evaluate these questions: Was the device easy to insert transcervically? Was inflation of the balloons easy? Was deliver of saline easy? Was deliver of ExEm foam easy? Was removal easy?

  2. Tolerability and ease of use - Patient experience evaluation

    Time frame: Pre-procedure, during procedure, immediately post-procedure, 15 minutes post-procedure

    Participants will indicate maximum level of pain experienced during study procedures using 100 mm visual analogue scale (VAS) at various time points. We will compare pain with placement, treatment, and removal to several baseline assessments. VAS scales: Baseline expectation of pain, baseline pain immediately following speculum placement, baseline pain immediately prior to placement, pain associated with insertion, pain associated with balloon inflation, pain associated with administration of saline, pain associated with administration of ExEm foam, pain associated with complete device removal, pain 15 minutes after completion of procedure, overall satisfaction with procedure, willingness to recommend procedure to a friend.

Study contacts

Contact information is provided by the study sponsor or research team.

Women's Health Research Unit Department of Ob/Gyn

CONTACT

[email protected]

503-494-3666

Sponsors and collaborators

Lead sponsor

Oregon Health and Science University

Other

Registry information

Official study title

Development of an Intrauterine Selective Balloon Catheter System for Transcervical Delivery of Selected Agents to the Fallopian Tube

Important dates

Study start
2026
Primary completion
2027
Study completion
2028
First posted
Mar 20, 2023
Registry last updated
Jul 31, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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