Please assess the completion status of the following clinical trial:

Trial Title: Proximal TEmporary oCclusion Using Balloon Guide Catheter for Mechanical Thrombectomy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~1. Age ≥18 years~2. Diagnosis of AIS with confirmed anterior circulation LVO (including intracranial segment of the internal carotid artery, and the first or proximal second segment \[M1 or proximal M2\] of the middle cerebral artery) by brain imaging~3. To receive MT within 24 hours after AIS onset according to local guidelines~4. Preoperative mRS score of 0-1~5. Signed informed consent form obtained from the subject (or approved surrogate)~Exclusion Criteria:~1. Intracranial hemorrhage confirmed by imaging~2. Known or suspected pre-existing (chronic) large vessel occlusion in the symptomatic territory~3. Excessive vascular access tortuosity disables the use of balloon guide catheter~4. Intracranial stent implanted in the same vascular territory that precludes the safe deployment/removal of the neuro-thrombectomy device~5. Any other condition that precludes the performing of mechanical thrombectomy procedure~6. Occlusions in multiple vascular territories confirmed by Computed Tomography Angiography(CTA) or Magnetic Resonance Angiography(MRA)~7. Subjects who are pregnant~8. Subjects who are allergy to the contrast agent~9. Subjects who refuse to cooperate or unable to tolerate interventional operation~10. Subjects whose expected lifetime are less than 90 days~11. Subjects who are unlikely to participate in follow-up assessments according to the investigator's judgement~12. Any other condition that, according to the investigator's judgement, not suitable for using of balloon guide catheter

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Intervention group (Type: EXPERIMENTAL): Balloon guide catheters (BGCs)
- Control group (Type: ACTIVE_COMPARATOR): Standard guide catheter

Based on this trial design, predict the completion outcome and termination type (if applicable).