Blake Drain
The BLAKE drain is a flexible silicone wound drain with four longitudinal channels around a solid core, connected to a compatible closed-suction reservoir. It is available in flat and round configurations.[1] The channel design provides several fluid pathways.[1]
For drain indications, urine-leak assessment, cultures, antibiotics and removal decisions, see the shared JP and wound-drain guidance. See Penrose Drain for open passive drainage.
Design and device selection
| Feature | Practical meaning |
|---|---|
| Four channels | Fluid enters along the channeled segment. Keep that segment within the intended wound or cavity; exposed channels can compromise drainage. |
| Silicone, solid center | Flexible construction; instruments, excessive pressure and accidental sutures can still damage the tube. |
| Flat and round options | The manufacturer lists flat 7- and 10-mm drains and round 10-, 15-, 19- and 24-Fr options. Confirm the exact model and drainage length. |
| Radiopaque material or stripe | Helps identify the device on imaging; configuration varies by model. |
| Reservoir compatibility | Use an appropriate airtight connector and the reservoir's own activation instructions. A bulb and a spring reservoir are not interchangeable operating mechanisms. |
Blake compared with JP
| Feature | Blake | JP |
|---|---|---|
| Fluid entry | Four longitudinal channels around a solid core, giving several drainage routes under suction | Perforations (round) or a channeled or ribbed flat tube, depending on the model |
| Sizes | Flat (7 and 10 mm) or round (10 to 24 Fr)[1] | Flat (7 and 10 mm); round perforated (7 to 19 Fr) or round channel (10 to 32 Fr) in the Cardinal catalog[2] |
| Reservoir | J-VAC bulb (100 mL) or spring reservoirs (150, 300 and 450 mL)[1] | Bulb reservoirs (100 and 400 mL) or spring reservoirs[2] |
| Removal | The manufacturer states that removal may be less traumatic because of the channel design[1] | Entrapment or tissue ingrowth can make removal difficult with any drain |
| Bench flow | — | Perforated drains flowed better than fluted drains in one in vitro model[4] |
The manufacturer states that four continuous channels give greater tissue contact area than regular perforated drains, and that removal is less uncomfortable than with rigid chest tubes.[1] The same instructions warn that tissue ingrowth can still interfere with removal. Neither statement is a comparison with JP drains in urologic surgery.
What the evidence supports
Softness and several drainage channels are useful device characteristics. Manufacturer claims about comfort and ambulation largely compare BLAKE drains with rigid chest tubes in cardiothoracic settings.[1]
The JP product family itself also includes channel drains. Comparing “Blake versus JP” without specifying tube geometry, size, reservoir and surgical setting can therefore be misleading.[2]
Choose a drain for the required location and fluid, with attention to handling and availability. The manufacturer's instructions require attention to occlusion and explicitly warn that tissue ingrowth can interfere with removal.[1]
Use in reconstructive urology and urogynecology
The Blake and the JP are used for the same purposes: pelvic or retroperitoneal dead-space evacuation and leak surveillance after cystectomy and diversion, upper tract reconstruction, fistula repair, posterior urethroplasty, and flap or graft reconstruction such as phalloplasty, vaginoplasty and perineal or scrotal reconstruction.[1] The BLAKE instructions warn that tissue ingrowth may hinder removal and advise monitoring wound healing.[1] No study cited here establishes better performance than JP drains in these settings.
Evidence on whether to drain at all is on the JP drain page, including the meta-analyses and series after radical prostatectomy, partial nephrectomy and cystectomy, drain-fluid creatinine and management of urine leak.
Placement, care and removal
- Place the channeled segment at the intended collection site, in the dependent part of the cavity, with the channels wholly inside the wound or cavity. The instructions warn that drainage can fail when channels lie outside the wound.[1] Avoid curling, pinching or trapping the tube during closure.
- Secure around the tubing as instructed. Do not pass a suture through the drain or nick it with instruments.
- Preserve the airtight connections, inspect patency and record fluid volume and character. An empty reservoir does not prove absence of a collection.
- Do not allow the reservoir to fill completely or lose the prescribed suction. Use the correct reservoir-specific emptying technique.
- Avoid forceful milking or improvised suction changes. Occlusion requires a device-appropriate assessment and treating-team plan.
- Discontinue suction before removal. Stop if removal meets unexpected resistance; inspect for completeness afterward.[1]
Check the entire assembly before MRI or in a patient with latex allergy. The 150-, 300- and 450-mL J-VAC spring reservoirs described in the manufacturer instructions contain metal springs with a magnetic-field warning, and those reservoir instructions carry a natural-rubber-latex caution.[1]
WHO advises against prolonging prophylaxis solely for the presence of a wound drain (Recommendation 13, conditional, low-quality evidence) and recommends removal when clinically indicated, with no evidence to support an optimal exact timing (Recommendation 14, conditional, very-low-quality evidence).[3]
See also
Jackson-Pratt Drain · Penrose Drain · Foley Catheter · Suprapubic Catheter · Perioperative Antibiotic Prophylaxis · Upper Tract Reconstruction · Urinary Diversion
References
1. Ethicon. BLAKE Silicone Drains; J-VAC Closed Wound Drainage System instructions for use. 2021. Manufacturer brochure and instructions.
2. Cardinal Health. Jackson-Pratt Wound Drains: product catalog. 2021. Manufacturer catalog (distributor-hosted copy).
3. World Health Organization. Global Guidelines for the Prevention of Surgical Site Infection. 2nd ed. 2018. Section 4.26: antibiotics and drain removal and Web Appendix 27: systematic review.
4. Khansa I, Khansa L, Meyerson J, Janis JE. Optimal use of surgical drains: evidence-based strategies. Plast Reconstr Surg. 2018;141(6):1542–1549. doi:10.1097/PRS.0000000000004413.