Thompson Retractor
Table-mounted self-retaining retractor system with articulating arms on a rigid table-rail frame plus a dedicated "obesity bar" and sidebars that allow lateral retraction of thick abdominal walls. Manufactured by Thompson Surgical Instruments (Traverse City, Michigan). One of the three major modular table-fixed platforms alongside the Bookwalter and Omni-Tract; distinguished by its obesity / large-patient accommodation and independently releasable joints.[1][2]
Design
- Table-mounted frame clamps to the operating-table side rails; provides the rigid external anchor.
- Articulating arms with mechanical joints extend from the frame; lock at any chosen angle / depth; blades clip to the arms.[1]
- "Obesity bar" and sidebars — specialized frame extensions for larger patients; sidebars angle laterally and toward the floor, retracting thick abdominal-wall flaps posteriorly for maximum exposure.[2]
- Interchangeable blade library — bladder blades for cephalad retraction, Richardson-style for lateral, deep blades for visceral, etc.[2]
- Independently releasable joints — each arm releases without disturbing the rest of the setup, allowing intermittent tissue relaxation that reduces retraction-related ischemic injury.[1]
- Material: surgical-grade stainless steel, autoclavable.
Two Distinguishing Features
The Thompson's two architectural distinctions vs the Bookwalter and Omni-Tract:
- Obesity bar + sidebars — purpose-built large-patient accommodation that ring-based systems lack. The sidebars retract thick abdominal-wall flaps posteriorly, an exposure geometry the Bookwalter ring cannot duplicate.[2]
- Independent joint release — per-arm relaxation without disturbing the whole setup; built around the principle that intermittent tissue relaxation reduces retraction injury.[1]
Reconstructive-Urology and Urogyn Uses
The Thompson is the multi-vector self-retaining retractor of choice for large-patient and complex multi-phase RU/urogyn cases:
- Open BNR, augmentation cystoplasty, urinary diversion, AUS pump-pouch / reservoir, ureteral reimplantation in obese / thick-abdominal-wall patients — the obesity bar handles abdominal-wall mass that overwhelms Bookwalter / Omni-Tract ring blades.
- Open radical prostatectomy and cystectomy — sustained multi-vector retraction with independent blade relaxation across the multi-phase operation.
- Open sacrocolpopexy — abdominal-wall + bladder + bowel retraction with the multi-arm system; particularly useful in obese patients.
- Open transabdominal VVF / RVF / RUF repair — peri-fistula multi-vector retraction during dissection and during omental / peritoneal-flap mobilization.
- Adjunctive hysterectomy during complex pelvic reconstruction.
- Re-do pelvic operations for post-radiation hostile re-entry, fistula repair, adhesion takedown.
- Complex oncologic resections requiring prolonged stable exposure — the Modified Makuuchi incision + Thompson with obesity bar / sidebars is the canonical hepatobiliary application (Chang 2010) and the same exposure principle applies to extensive retroperitoneal RU dissection.[2]
Spine-RU intersection
- Anterior cervical spine surgery — the Thompson-Farley variant uses arms with mechanical joints fixed to a table-mounted frame for ACDF. Tangential to RU/urogyn, but mentioned because the architectural philosophy (independent-joint release for intermittent tissue relaxation) crosses over.[1]
- Anterior / lateral lumbar spine approaches (ALIF, lateral spine) that intersect RU surgical fields use Thompson-class retractors for the same reasons that drive ALIF use of malleable retractors — vessel / bowel retraction in the anterior corridor.
Thompson vs Bookwalter vs Omni-Tract vs Balfour
| Feature | Thompson | Bookwalter | Omni-Tract | Balfour |
|---|---|---|---|---|
| Mounting | Table-mounted frame + sidebars | Table post + oval ring | Table post + articulating arms | Wound-edge resting |
| Blade options | Extensive modular | Extensive modular | Extensive modular | 2 lateral + 1 central |
| Obesity accommodation | Dedicated obesity bar | Standard ring sizes | Standard arms | Limited |
| Independent blade relaxation | Yes (per arm) | Possible (per blade) | Possible | No |
| Setup speed | Moderate-slow | Moderate-slow | Moderate | Fast |
| Best fit | Obese / complex / multi-phase | Major abdominal / pelvic | Multi-vector across procedures | Routine abdominal |
The Thompson's primary advantage over the Bookwalter is the obesity bar / sidebar architecture and the explicit per-arm release. Its trade-off vs the Bookwalter is modestly slower setup and a smaller blade-library footprint at many institutions.
Setup and Technique
- Frame attachment to the table side rails at appropriate height.
- Obesity bar / sidebar placement if the patient's BMI demands posterior-flap retraction; angle sidebars laterally and toward the floor.[2]
- Articulating-arm positioning over the wound at heights that do not impede the surgeon's hand position.
- Blade sequence: anchor blades (anterior / lateral) first; deeper / angled blades as dissection advances.
- Per-arm release every 30–60 minutes to allow intermittent tissue reperfusion — the design feature that the Thompson uniquely supports without disturbing the whole setup.[1]
- Combine with handheld retractors (Deaver, Richardson) for specific exposures the frame cannot provide.
Safety
Standard Bookwalter-class retractor-safety principles apply (see the Bookwalter page for the full discussion):[4]
- Bowel injury from sustained blade pressure (particularly in retroperitoneal exposures where bowel is not directly visualized) — Noldus 2002 data.
- Femoral / peroneal / pudendal neuropraxia from deep lateral blades.
- Heightened caution in immunosuppression, diverticulitis, prior radiation, re-do fields, thin-bowel-wall patients.
- Periodic per-arm release is the Thompson-specific risk-mitigation lever — taking advantage of the independent-joint design.
Historical Context
Thompson Surgical Instruments (Traverse City, Michigan) developed the system as a multi-arm articulating alternative to ring-based platforms, with the obesity bar / sidebar architecture engineered specifically for the operative-exposure challenges of larger patients. The Saunders 1986 J Neurosurg technical note on table-fixed noncranial retractors is part of the broader genealogy that produced the Thompson-Farley anterior-cervical-spine variant and the Thompson abdominal frame.[3]
See also: Bookwalter, Omni-Tract, Balfour, Perineal Bookwalter (Jordan / Brooke).
References
1. Seex KA. "An anterior cervical retractor utilizing a novel principle." J Neurosurg Spine. 2010;12(5):547–51. doi:10.3171/2009.9.SPINE0955
2. Chang SB, Palavecino M, Wray CJ, et al. "Modified Makuuchi incision for foregut procedures." Arch Surg. 2010;145(3):281–4. doi:10.1001/archsurg.2010.7
3. Saunders RL. "Table-fixed retractor system for noncranial surgery. Technical note." J Neurosurg. 1986;64(5):819–21. doi:10.3171/jns.1986.64.5.0819
4. Noldus J, Graefen M, Huland H. "Major postoperative complications secondary to use of the Bookwalter self-retaining retractor." Urology. 2002;60(6):964–7. doi:10.1016/s0090-4295(02)01946-5