Three years ago, the medical director of a secondary-level IPS in Bogotá called me, frustrated. They had purchased an all-inclusive endoscopy tower, promised to work for both diagnostic and advanced therapeutic purposes. Six months later, the equipment was underutilized: the gastroenterologist used it only for routine colonoscopies, and when a case of upper gastrointestinal bleeding requiring hemostasis arose, they discovered that the processor did not have enough power to work with high-frequency coagulation forceps. They ended up referring the patient. The tower, which cost around 80 million pesos, worked perfectly, but not for what the service really needed.

That confusion is more common than it seems. In the Colombian market, many offices and clinics buy endoscopy equipment without understanding the fundamental difference between diagnostic endoscopy and therapeutic endoscopy. It is not just about price or brand. It is about understanding what procedures you will perform, how often, and what clinical and technical infrastructure you need to sustain them over time.

Diagnostic endoscopy: what it is and what it is used for in clinical practice

Diagnostic endoscopy is the procedure by which an endoscope (flexible or rigid, depending on the target organ) is introduced to directly visualize internal structures and collect clinical information without performing significant therapeutic intervention. Its main function is visual examination, simple biopsies, and documenting findings through imaging or video.

In practical terms, we are talking about screening gastroscopies, routine colonoscopies for early detection of colorectal cancer, diagnostic cystoscopies in urology, evaluation hysteroscopies, exploratory bronchoscopies, and diagnostic arthroscopies in orthopedics. These procedures represent the majority of the volume in outpatient services and specialized offices in Colombia.

From a commercial standpoint, diagnostic endoscopy requires equipment with good image quality, adequate lighting, reliable capture and archiving, but not necessarily wide working channels or compatibility with complex intervention devices. This directly impacts the acquisition cost, maintenance, and consumables profile.

Therapeutic endoscopy: when observation is not enough

Therapeutic endoscopy, on the other hand, goes beyond looking. It intervenes. It resolves. Here we are talking about loop snare polypectomies, esophageal variceal ligation, stenosis dilation, placement of biliary or esophageal stents, mucosectomy, submucosal dissection, clip or injection hemostasis, foreign body extraction, and pancreatic pseudocyst drainage.

These procedures require towers with high-definition image processors (often with NBI, FICE, or similar technology for early detection of lesions), high-intensity xenon or LED light sources, integrated electrocautery units, irrigation pumps, CO₂ insufflators, and working channels that support forceps, snares, balloons, clips, and other accessories without compromising visual quality or maneuverability.

In our experience with projects involving clinics and diagnostic centers in Colombia, the decision to move from diagnostics to therapy is not just clinical. It is operational, financial, and a business model decision. A service that begins performing therapy must consider greater investment in training, a larger stock of specialized consumables, more robust maintenance contracts, and greater operational availability (uptime), because cancellations in therapeutic procedures have much more serious clinical and economic consequences.

What is endoscopy used for? Beyond the technical definition

When a medical director or an IPS administrator asks what endoscopy is used for, the technical answer is: to visualize cavities and internal organs in a minimally invasive way. But the commercial and operational answer is: to solve concrete clinical problems with less risk, less recovery time, and lower costs associated with open surgery.

Endoscopy is used to diagnose early, reduce hospital admissions, increase service productivity, generate recurring revenue from outpatient procedures, and position the medical center as a reference in key specialties. In Colombia, where EPS and insurers seek low-cost, definitive procedures, well-equipped and well-managed endoscopy is a clear competitive advantage.

But here is the critical point: not all endoscopy generates the same value. A gastroenterology office that only performs screening gastroscopies does not need (nor should it pay for) a high-complexity therapeutic system. Conversely, a clinic that wants to offer ERCP (endoscopic retrograde cholangiopancreatography) cannot do so with basic diagnostic equipment. The disconnect between installed capacity and real clinical demand is one of the main causes of underutilization and frustration with biomedical equipment.

Types of endoscopy: criteria for choosing what technology to buy

When we talk about types of endoscopy, we can classify them by target organ (gastroscopy, colonoscopy, cystoscopy, bronchoscopy, hysteroscopy, laparoscopy, arthroscopy), by purpose (diagnostic vs therapeutic), or by technology (fiber optic vs videoendoscopy, standard vs high definition, white light vs narrow-band imaging).

In practice, what matters for a purchasing decision is:

Expected volume of procedures. If your office performs 20 endoscopies a month, you do not need a high-throughput hospital system. If your clinic performs 200, you do.

Clinical complexity. Is it only diagnostic? Does it include simple biopsies? Does it require polypectomies? Will there be cases of gastrointestinal bleeding requiring immediate hemostasis?

Specialist profile. A gastroenterologist who only does screening has different needs from one who performs ERCP. A urologist who performs oncological follow-up cystoscopies has different needs from one who resolves urethral strictures.

Available infrastructure. Do you have a recovery room? An anesthesiologist available? An image management system? Validated cleaning and disinfection protocols?

Reimbursement model. What procedures does your main insurer pay for? At what rate? Does it include supplies, or are they separate?

These criteria define not only what tower to buy, but what accessories, what service contracts, and what operational flow to design.

Endoscopic procedures: from routine to intervention

The most common diagnostic endoscopic procedures in offices and outpatient clinics in Colombia include:

• Gastroscopy (esophagogastroduodenoscopy) for the evaluation of upper gastrointestinal symptoms, detection of Helicobacter pylori, Barrett screening, and ulcer follow-up.
• Colonoscopy for colorectal cancer detection, inflammatory bowel disease, and lower gastrointestinal bleeding.
• Rectosigmoidoscopy for evaluation of the rectum and sigmoid colon without deep sedation.
• Cystoscopy for the evaluation of hematuria, bladder cancer follow-up, and suspected stones.
• Diagnostic hysteroscopy for the evaluation of abnormal uterine bleeding, infertility, and polyps.

These procedures can be performed with standard diagnostic equipment, standard or high-definition image processors, and basic accessories (biopsy forceps, brushes). The cost per procedure is relatively low, the times are short (averaging 15 to 30 minutes), and the learning curve is manageable.

Therapeutic procedures, on the other hand, include:

• Loop snare polypectomy (requires electrocautery, a snare, and real-time image control).
• Clip hemostasis, epinephrine injection, argon plasma coagulation.
• Dilation of esophageal, pyloric, or colonic strictures with balloons or bougies.
• Placement of stents in the esophagus, duodenum, colon, and biliary tract.
• Endoscopic mucosectomy for flat or elevated lesions.
• ERCP with sphincterotomy, stone extraction, and duct drainage.

Each of these procedures has specific technical requirements, a higher risk of complications, longer operating time, and higher consumable costs. A service that wants to offer them must validate not only the equipment's capability, but also the medical team's competence, the availability of anesthetic support, and the ability to manage immediate complications (perforation, bleeding).

Purchasing criteria: how to evaluate an endoscopy tower without falling into emotional decisions

I have seen biomedical equipment purchases guided by attractive catalogs, impressive demonstrations at trade shows, and aggressive last-minute discounts. And I have also seen how those same purchases become operational and financial headaches after 12 or 18 months.

A smart purchase of endoscopy technology begins with an honest needs analysis:

Define the procedure profile. Not what you would like to do, but what you will really do in the next 12 to 24 months. If 95% of your cases are simple diagnostics, do not pay for therapeutic capacity that you will not use.

Evaluate the total cost of ownership (TCO). Purchase price plus preventive and corrective maintenance, plus consumables, plus training, plus spare parts, plus software updates, plus downtime costs. A cheap piece of equipment that fails every three months and takes 15 days to get a spare part has a very high TCO.

Validate the availability of local technical service. In Colombia, this is critical. Does the supplier have a biomedical engineer in Bogotá, Medellín, Cali, Barranquilla? What response times do they guarantee? Do they have a stock of critical spare parts? Do they offer a loaner while yours is in maintenance?

Review compatibility with your current workflow. Does it integrate with your image management system? Does it support DICOM? Does it allow exporting reports in standard formats? Is it compatible with third-party accessories or only with the proprietary brand?

Evaluate the learning curve. A piece of equipment may be technically superior, but if your doctors need 50 hours of training and three months of practice to use it fluently, the return is delayed.

Negotiate clear warranties and SLAs. Not just "one year of warranty". We want to know: what exactly does it cover? Does it include labor and spare parts? What about consumables? What is the maximum acceptable downtime before a penalty or replacement?

In projects where we participate as advisors, we have seen that the most successful decisions are those where the purchasing committee includes the specialist who will use the equipment, the biomedical engineer who will maintain it, the administrator who will pay for it, and the service manager who will integrate it into the operational flow. When one of those criteria is missing, surprises appear.

Diagnostics vs therapy: real decision cases

A diagnostic center in Medellín was evaluating expanding its portfolio with digestive endoscopy. They came from radiology (X-rays, ultrasound, CT scans) and wanted to capitalize on the base of patients referred by gastroenterologists. The initial question was: do we buy diagnostics or therapy?

The demand analysis showed that 80% of the cases would be screening gastroscopies and colonoscopies. 15%, follow-up of inflammatory bowel disease. Only 5%, cases that could require therapeutic intervention (small polypectomies, multiple biopsies). They decided to buy a high-definition diagnostic system with a standard working channel, and establish a referral network for complex cases with a nearby clinic.

Result: equipment in use five days a week, high turnover, controlled operating costs, and return on investment in 18 months. After two years, with the consolidated volume and validated demand, they expanded with a second system with intermediate therapeutic capacity.

Another case: a gastroenterology office in Cali bought a high-end therapeutic system because the doctor had been trained in ERCP in Spain and wanted to offer that service. The problem: the office did not have an integrated fluoroscopy room, did not have an in-house anesthesiologist, and the main EPS did not authorize outpatient ERCP, only in a clinic. The equipment, which cost around 120 million pesos, ended up only performing diagnostic procedures. Two years later, the doctor partnered with a clinic that did have the infrastructure, and the equipment was relocated with a significant financial loss.

These cases are not exceptions. They are patterns. Medical technology, however advanced it may be, only generates value if it aligns with the service model, the available infrastructure, and the real market demand.

Maintenance, support, and operational availability: what does not appear in the catalog

One of the most costly mistakes in purchasing endoscopy equipment is underestimating the cost and complexity of maintenance. A high-definition flexible videoendoscope is not a household appliance. It is a precision device with fiber optics, irrigation channels, hermetic seals, image chips, and sensitive electronic components. It fails. It wears out. It requires calibration, specialized cleaning, and scheduled replacement of parts.

In our experience with projects involving clinics and diagnostic centers, the services that operate sustainably have three elements in common:

Preventive maintenance contracts with scheduled visits. Not just "call us when it breaks". We are talking about quarterly or semi-annual reviews, circuit cleaning, parameter verification, software updates, and replacement of critical consumables before failure.

Backup stock for high-turnover components. Biopsy forceps, irrigation tubes, air/water valves, channel caps. If you have to wait 15 days every time a forceps breaks, your productivity plummets.

Plan B for unscheduled downtime. What do you do if your tower fails on a Monday at 9 AM and you have eight procedures scheduled? Do you have backup equipment? An agreement with another clinic? A temporary loan from the supplier?

GSMED Imaging, for example, operates in Colombia with a support model that includes a local biomedical engineer, response times of less than 48 hours in major cities, and a loaner equipment program while the failure is being resolved. It is not standard in the market, but it should be. One day of tower downtime in a high-volume service can cost more than a year of maintenance contract.

ROI in endoscopy: how to justify the investment to a purchasing committee

When you present an endoscopy equipment purchase proposal to a management committee, the clinical argument is important, but not sufficient. You need numbers. Projections. Clear assumptions.

The ROI (return on investment) in endoscopy is calculated by considering:

Projected revenue per procedure. Average fee according to the contract with the health insurance provider or private payment, multiplied by the expected monthly volume. Important: use conservative figures. If you think you will perform 80 procedures a month, project with 50 until demand stabilizes.

Direct costs per procedure. Consumables (biopsy forceps, syringes, solutions), cleaning and disinfection supplies, sedation (when applicable), medical fees.

Monthly fixed costs. Financing fee or equipment depreciation, maintenance contract, assigned technical staff, physical space.

Expected utilization rate. How many days a week will the equipment operate? How many procedures per day? Equipment that only operates two days a week takes much longer to recover the investment than one in use five days.

Investment recovery time. The typical range in well-managed outpatient services is between 18 and 36 months. If your projection exceeds 48 months, review the assumptions or consider lower initial-cost equipment.

A common mistake is to project ROI based solely on revenue per procedure, without considering downtime costs, staff turnover, changes in insurer rates, or new competition. A realistic ROI includes pessimistic, expected, and optimistic scenarios, and validates sensitivity to changes in critical variables.

Critical differences between diagnostic and therapeutic: beyond price

In practical terms, the critical differences between diagnostic and therapeutic endoscopy that impact your purchasing decision are:

Image processor. Diagnostic can operate with standard definition. Therapeutic requires high definition (HD or higher), ideally with digital contrast technologies such as NBI or FICE for the detection of subtle lesions.

Working channel. Diagnostic operates with a 2.8 mm channel. Therapeutic requires 3.2 mm or higher to support more robust accessories.

Light source. Standard diagnostic operates with halogen or basic LED. Therapeutic requires xenon or high-intensity LED to maintain adequate illumination with accessories in the field.

Integrated electrosurgery unit. Not necessary in diagnostic. Critical in therapeutic for polypectomy, hemostasis, and mucosectomy.

Irrigation pump and CO₂ insufflator. Optional in diagnostic. Essential in therapeutic to maintain a clear field and controlled distension.

Consumable cost. In diagnostic, basically biopsy forceps. In therapeutic, diathermic snares, clips, stents, balloons, injectors, mucosectomy kits. The cost per procedure can be three to five times higher.

Procedure time. Average diagnostic: 15 to 30 minutes. Therapeutic: 45 to 90 minutes, depending on complexity.

Sedation level. Diagnostic can be done with mild or moderate sedation. Therapeutic frequently requires deep sedation or general anesthesia, with infrastructure and staffing implications.

These differences are not insignificant technical details. They are operational and financial decisions that determine whether your investment will be sustainable or a source of frustration.

Final considerations: buying right the first time

Diagnostic endoscopy is the foundation. It is the volume. It is the stable and predictable cash flow that sustains a service. Therapeutic endoscopy is differentiation. It is the added value. It is what makes you a reference and allows you to capture complex, higher-margin cases.

But you do not need to jump straight to therapeutic if your service is still building volume, validating demand, or consolidating operational workflows. It is perfectly reasonable (and in many cases, smarter) to start with a robust diagnostic system, master it, generate a return, and then scale toward therapeutic capacity when demand and infrastructure justify it.

What is not reasonable is buying technology without understanding what problem you are solving, what procedures you will perform, what volume you expect to sustain, what technical support you need, and what return you project. That clarity is the difference between a strategic purchase and poorly executed capital expenditure.

In Colombia, where the medical technology market is competitive but irregular in after-sales service quality, the supplier decision is as important as the equipment decision. An excellent system with deficient support is an operational risk. A suitable system with solid support is a sustainable investment.

Diagnostic vs. therapeutic endoscopy is not a competition. It is a progression. And understanding where your service is in that progression is the first step toward making informed decisions that generate real clinical, operational, and financial value.