Endostitch™
The Endostitch™ (Autosuture / Covidien / Medtronic) is a disposable laparoscopic automated suturing device originally developed for endoscopic intracorporeal suturing and repurposed in urogynecology for transvaginal sacrospinous ligament fixation (SSLF). Its defining mechanic is a toggle-jaw needle transfer — a single thumb-actuated lever flips the needle between two jaws, dramatically reducing per-stitch placement time and eliminating the manual reload between throws. The instrument was the earliest automated suture-capturing device adapted for SSLF (Schlesinger 1997) and remains in active use in laparoscopic suturing across multiple specialties.[1][2][3]
Design
- Pistol-grip handpiece with toggle lever actuator
- Two opposing jaws at the distal end; needle automatically loaded for the next pass after each toggle
- Short suture pre-loaded with needle between the jaws (Polysorb, Biosyn, Surgipro variants)
- 10 mm laparoscopic-port-compatible shaft — designed for laparoscopic port access, longer than purpose-built vaginal SSLF devices
- Single-use disposable
Mechanism Advantage — Per-Stitch Time
The toggle mechanism reduced suture-placement time substantially over conventional needle-holder technique in the original Adams 1995 validation: 43 ± 27 sec/stitch (Endostitch) vs 151 ± 24 sec/stitch (conventional laparoscopic needle holder), p < 0.001.[2] The headline reproduces across applications.
Reconstructive / Urogyn Use — Vaginal SSLF
The Schlesinger 1997 original transvaginal-SSLF series with the Endostitch (17 patients, mean age 66.3 yr, braided polyester suture):[1]
| Endpoint | Result |
|---|---|
| SSL plication time | 18.8 ± 3.0 min (range 14–25) |
| EBL ≤ 100 mL | 88.2% |
| Perioperative complications | None |
| Vault support maintained at mean 9.8 mo follow-up | 88.2% |
| Recurrence | 11.8% (2 patients at 4 and 6 mo) |
Schlesinger explicitly noted that "decreasing the instrument's length would make it more practical" for vaginal use — the central ergonomic limitation that has constrained adoption ever since.[1]
Vascular Safety — Manning 2014 Cadaveric Comparison
The Manning 2014 comparative study of six SSLF devices found the Endostitch remained confined within the sacrospinous ligament in all specimens, including thin ligaments — placing it in the same favorable safety class as the Capio and Caspari (and distinct from the i-Stitch, which penetrated coccygeal branches of the inferior gluteal artery).[4]
However, the Endostitch was slightly less ideal than the Capio and Caspari on Manning's framework: the ideal device should have the sharp penetrating component traverse the shortest distance at the shallowest depth. The Caspari and Capio best satisfied that criterion; the Endostitch did so "less so."[4]
Broader Surgical Applications
The Endostitch's primary domain remains laparoscopic suturing, where it is widely used:[2][5]
- Laparoscopic pyeloplasty — Anderson-Hynes ureteropelvic reconstruction
- Laparoscopic bladder-neck suspension (historic Burch / paravaginal)
- Laparoscopic sacrocolpopexy — mesh-to-sacrum and mesh-to-vaginal-cuff sutures
- GI viscerotomy closure — compatible with barbed suture; 35–42% closure-time reduction with barbed suture vs nonbarbed (Omotosho 2011)[5]
- Hernia repair peritoneal closure
- General laparoscopic tissue approximation across specialties
An automated motorized version was developed by Göpel 2011 — DC motor triggered by a button for one-finger handling — and significantly reduced suturing time (p = 0.01) vs the manual lever.[3]
Limitations
- Length designed for laparoscopic port access — somewhat cumbersome for vaginal SSLF (Schlesinger 1997 original-series caveat)[1]
- Ergonomics: weight and size on the handpiece have been cited as drawbacks compared to purpose-built devices[3]
- Single-use disposable — recurring per-case cost[6]
- Larger needle hole in tissue than some alternatives[6]
- Less ergonomic profile than purpose-built vaginal SSLF devices (Capio, i-Stitch) in surgeons who do transvaginal apical-suspension cases primarily
Endostitch vs Adjacent SSLF Devices
| Feature | Endostitch | Capio | Caspari | i-Stitch |
|---|---|---|---|---|
| Type | Suture-capturing (toggle-jaw) | Suture-capturing (throw-catch-retrieve) | Suture-capturing | Suture-capturing (blunt ball-tip) |
| Original design purpose | Laparoscopic surgery | Vaginal SSLF | Vaginal SSLF | Vaginal SSLF |
| Vascular safety (Manning 2014) | Remained within ligament | Remained within ligament | Remained within ligament; best vascular profile | Penetrated vessels in thin ligaments |
| Depth of tissue penetration | Moderate (less ideal than Capio / Caspari) | Shallow (ideal) | Shallow (ideal) | Deep (unsafe in thin ligaments) |
| Ergonomics for vaginal use | Suboptimal — too long | Purpose-built | Purpose-built | Purpose-built |
| Best application | Laparoscopic suturing across specialties; SSLF historical / opportunistic | Default vaginal SSLF workhorse | Vaginal SSLF (less common in US) | Bilateral SSLF with BSC Mesh + NanoScope variant |
Bottom Line
The Endostitch is a versatile laparoscopic suturing device with a favorable vascular-safety profile for SSLF, but its endoscopic-rather-than-vaginal ergonomic design has limited adoption for SSLF compared to purpose-built devices like the Capio. It remains the dominant automated suturing instrument in laparoscopic surgery across multiple specialties (pyeloplasty, sacrocolpopexy, hernia, GI), where the 10 mm port-compatible design is a feature rather than a limitation.
See also: Capio Suture Capturing Device, i-Stitch, Anchorsure System, Saffron Fixation System, RD180 Suturing Device, Deschamps Ligature Carrier.
References
1. Schlesinger RE. "Vaginal sacrospinous ligament fixation with the Autosuture Endostitch device." Am J Obstet Gynecol. 1997;176(6):1358–62. doi:10.1016/s0002-9378(97)70358-2
2. Adams JB, Schulam PG, Moore RG, Partin AW, Kavoussi LR. "New laparoscopic suturing device: initial clinical experience." Urology. 1995;46(2):242–5. doi:10.1016/s0090-4295(99)80200-3
3. Göpel T, Härtl F, Schneider A, Buss M, Feussner H. "Automation of a suturing device for minimally invasive surgery." Surg Endosc. 2011;25(7):2100–4. doi:10.1007/s00464-010-1532-x
4. Manning JA, Arnold P. "A review of six sacrospinous suture devices." Aust N Z J Obstet Gynaecol. 2014;54(6):558–63. doi:10.1111/ajo.12272
5. Omotosho P, Yurcisin B, Ceppa E, et al. "In vivo assessment of an absorbable and nonabsorbable knotless barbed suture for laparoscopic single-layer enterotomy closure: a clinical and biomechanical comparison against nonbarbed suture." J Laparoendosc Adv Surg Tech A. 2011;21(10):893–7. doi:10.1089/lap.2011.0281
6. Nagai H, Araki S. "Semiautomatic suturing device (Maniceps) for laparoscopic surgery." Surg Endosc. 1999;13(2):191–3. doi:10.1007/s004649900937