Please assess the completion status of the following clinical trial:

Trial Title: Use of a Ureteral Access Sheath During Ureteroscopy and Its Effect on Stone Free Rate

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Upper ureteral (proximal to iliac vessels/iliac crest) calculi;~* Renal calculi;~* Normal renal function;~* Any stone composition;~* Single or multiple stones(planned treatment of all stones at this surgery);~* Age \> 18 years;~* Able and willing to return treatment centre for follow-up visits; AND~* Signed study consent~Exclusion Criteria:~* Ureteric calculi distal to the level of the iliac vessels/iliac crest;~* Failed ureteroscopy for same stone (i.e. has to be the first ureteroscopic procedure for this stone, however a prior failed extracorporeal shockwave lithotripsy (SWL) is acceptable);~* Bilateral ureteroscopy;~* If an adjunctive procedure is planned post ureteroscopy (e.g. percutaneous nephrolithotomy, SWL) (i.e. it is known preoperatively that a ureteroscopic procedure will not render the patient stone free and that ancillary procedures will be necessary);~* If in the investigators opinion, enrollment would be not be appropriate; OR~* Pregnancy

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

Study Arms:
- 1 (Type: ACTIVE_COMPARATOR): ureteroscopy with ureteral access sheath
- 2 (Type: NO_INTERVENTION): ureteroscopy without ureteral access sheath

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