A tissue retrieval bag is a sterile, single-use pouch that is passed through a trocar, opened inside the abdomen and used to capture a specimen so it can be removed without touching the port site or spilling into the peritoneal cavity. In gynecologic laparoscopy it is used for ovarian cysts, adnexa, fibroids and uteri. This guide explains how the bags work and how an OR buyer should compare them.
How a laparoscopic specimen retrieval bag works
A laparoscopic specimen retrieval bag is delivered rolled or folded inside an introducer. The introducer goes through a trocar, the bag is pushed out into the abdomen and it opens, either by its own shape memory or with a supporting ring or frame. The surgeon places the specimen inside with two graspers, then draws the neck of the bag up to the port.
Once the neck is outside the abdominal wall, the specimen is either removed whole, or reduced in size inside the bag and extracted piece by piece. Because the specimen never contacts the port wound, the risk of contaminating the port site or leaving fragments behind is reduced.
Types of retrieval bags and deployment
Bags differ mainly in how they open and how they close. Some have a built-in ring or springy rim that opens the mouth automatically; others open by pushing a rod or by pulling a cord. Closure is usually a drawstring or a sealed set of ports. The more stages the surgeon must manage, the more the assistant has to be trained, so ask for a hands-on demonstration.
Sizes and volume: matching the bag to the specimen
Volume is the first selection parameter. A small pouch is enough for a cyst wall or a tube, but a fibroid uterus needs a large bag that remains unfolded and does not tear when it is stretched. Check the stated volume, the diameter of the trocar needed to insert it and whether the bag can be used with 5 mm, 10 mm or 12 mm ports.
- Volume of the bag compared with your typical specimen
- Minimum trocar size for insertion
- Material strength and resistance to tearing under traction
- Transparency, so surrounding structures stay visible
MetraBag pro as a disposable tissue retrieval bag
From the BOWA range, MetraBag pro is a sterile containment bag designed for controlled in-bag morcellation during laparoscopic hysterectomy and myomectomy. It is delivered sterile and is inserted through a 10 mm trocar. Its volume is 3.5 litres, the material is transparent so the surrounding structures remain visible, and three colour-coded ports can be closed during and after morcellation.
CO2 insufflation of the bag creates working space inside it. It is meant to be paired with morcellation equipment, such as the ERGO 300 morcellator; the principle is explained in our article on contained morcellation.
Procurement checklist and supplier questions
Disposable products are bought repeatedly, so assess the supply chain as carefully as the product. Ask for the instructions for use in the languages your team reads, the sterile shelf life, the packaging unit and the lead time for replenishment. Confirm that the item is registered for use in the UAE through the relevant authority, since requirements can change.
Standardising on one or two bag types usually works better than stocking many. If you want to compare several suppliers on neutral criteria, see our retrieval bag comparison guide. For BOWA devices in general, see the BOWA brand page.
Next step
Beckfinity's specialists can help you specify retrieval bags together with morcellation equipment and answer questions about availability. Contact us through the contact page to request a quotation or a consultation.
Frequently asked questions
What is a laparoscopic tissue retrieval bag used for?
It captures a specimen inside the abdomen so it can be removed through a port or small incision without contact with the wound and with less risk of spillage. It is also the container in which tissue can be morcellated.
Is a retrieval bag single-use?
Retrieval bags are normally supplied sterile and intended for single use. Always follow the instructions for use of the specific product.
Which trocar size does MetraBag pro need?
According to the manufacturer, MetraBag pro is inserted through a 10 mm trocar and has a volume of 3.5 litres.
Can I cut a specimen inside the bag?
Contained morcellation inside a bag is a recognised technique, but it must be done with products designed for it, by trained surgeons and with the integrity of the bag checked.
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