Laser Tissue Welding - Distal Pancreatectomy Sealing Study
Açar sözlər
Mücərrəd
Təsvir
UNMET CLINICAL NEED
In the United States, pancreatic cancer is the fourth leading cause of cancer-related death in both men and women and will be the second leading case by 2030. Pancreatoduodenectomy (Whipple procedure) and distal partial pancreatectomy is used to treat pancreatic tumors, and these procedures are associated with a high rate of morbidity due to pancreatic fistulae.
As per the Surveillance, Epidemiology and End Results (SEER) Program: It is estimated that 41,609 men and women (21,370 men and 21,770 women) will be diagnosed with and 38,460 men and women will die of cancer of the pancreas in 2013. The five-year survival is dismal, 24.1% for localized malignancy, and drops to 6% if there is regional spread. There are 45,220 new cases in 2013 and 38,460 deaths.
Distal Pancreatectomy may be indicated for malignant exocrine tumors of the body and tail of pancreas (62%), insulinomas, chronic pancreatitis (12%), pancreatic pseudocysts, non pancreatic tumors (23%) and injury due to trauma.
Due to heighten awareness and preventative care, there has been an increase in detection of incidental small pancreatic mass cases due to widespread use of abdominal cross sectional imaging and thus an increase in the amount of pancreatic surgery performed. This is the stage when curative resections may be possible.
1. Surgical removal of the tumor is the only chance of a cure at T1A.
2. All pancreatic tumors at any stage require bulk reduction by a surgical procedure.
For patients undergoing distal pancreatectomy, pancreatic fistulas occurred post-operatively in 31% of patients. Over the long-term Kazanjian et al analyzed, 182 patients from 1996-2005 who underwent Pancreatoduodenectomy to treat ductal adenocarcinoma, concluded that the principal factor influencing long-term survival was operative blood loss. Pancreatic fistula is a main cause of postoperative morbidity, and is associated with numerous further complications, such as intra-abdominal abscesses, wound infection, sepsis, electrolyte imbalance, malabsorption, and hemorrhage, and with a dramatically increase in healthcare resource utilization.
The current state-of-art pancreatic surgical resections have an unacceptable pancreatic leak rate of 30-50%. This is because there are no FDA cleared or approved sealants or devices found to be safe or effective for sealing this organ. The current standard of care is anything but standard because of the use of off-label devices and sealants.
- Endo GIA Staplers: 510 (k) k111825 Cleared on basis of "literature review" without animal or human safety or efficacy data.
- Gore SeamGuard staple/suture reinforcement material 510 (k) k043056 Synthetic bio absorbable glycolide and trimethylene carbonate copolymer. Cleared on basis of in-vivo studies done "without performance standards" under section 514.
- Surgical Sealants: All used "off label": None are FDA cleared or approved for pancreatic surgery. These are Floseal, TachoSil, Tisseel, BioGlue, and CoSeal.
Jörg Kleeff et al reviewed the factors for surgical failure of distal pancreatectomy in 302 consecutive patients from 1993 to 2006 using four different surgical closures (gut anastomosis, seromuscular patch, suture and stapling device). Although distal pancreatectomy is less moribund as compared to Whipple procedure, morbidity was 32-52%, pancreatic fistulas occurred in 20-33% and mortality in 2% of cases. Pancreatic fistulas contributed significantly to morbidity, sepsis, length of stay and overall costs. Stapler closure of the pancreatic remnant is associated with a significantly higher fistula rate.
Laser Tissue Welding is the first combination (laser and biologic) class III surgical device intended to join and seal tissues accurately and instantly. The treatment process uses thermal energy created when a laser excites photosensitive dye molecules, to coagulate the protein albumin which transforms from a liquid to a solid instantly. Laser tissue welding creates a non-compressive, non-ablative sealing of tissues with microscopic thermal damage. This combination of a laser with albumin biologics stops bleeding and fluid leaks in nanoseconds without using sutures, hemostatic clotting factors (platelets/thrombin/fibrin), thermal or cryoablation.
Tarixlər
| Son Doğrulandı: | 07/31/2019 |
| İlk təqdim: | 05/07/2017 |
| Təxmini qeydiyyat təqdim edildi: | 05/07/2017 |
| İlk Göndərmə: | 05/09/2017 |
| Son Yeniləmə Göndərildi: | 08/11/2019 |
| Son Yeniləmə Göndərildi: | 08/13/2019 |
| Həqiqi Təhsilin Başlama Tarixi: | 12/31/2017 |
| Təxmini İlkin Tamamlanma Tarixi: | 06/30/2020 |
| Təxmini İşin Tamamlanma Tarixi: | 07/31/2020 |
Vəziyyət və ya xəstəlik
Müdaxilə / müalicə
Device: Distal Pancreatectomy Sealing using LTW
Faza
Qol Qrupları
| Qol | Müdaxilə / müalicə |
|---|---|
| Experimental: Distal Pancreatectomy Sealing using LTW At the completion of pancreatic resection, the cut surface of the pancreas is covered with two layers of Albu-Green solder and one layer of D-Albumin lamina, all welded with the laser. The 60 Watt custom 810nm diode laser, is set to deliver continuous energy with laser irradiation power of approximately 150 W/cm2 with a Fluence of 90 J/cm2. During soldering the tip of the custom hand piece with top hat beam profile is held 1-2 cm from the wound surface to generate a 5mm spot size. Albu-Green Solder is observed to convert from a liquid green state to a solid white crust when the laser is activated indicating the completion of welding and providing a visual cue to the operator. The amount of Albu-Green solder and size of the denatured albumin lamina used is documented. The total laser tissue welding time for the three layers and the laser tissue welding time in seconds per cm2 is documented. | Device: Distal Pancreatectomy Sealing using LTW The device's intended use is to seal the pancreatic surface using a laser to weld human albumin based biomaterials after surgical removal of pancreatic tumors during a partial pancreatectomy. |
Uyğunluq Kriteriyaları
| Təhsil üçün uyğun yaşlar | 18 Years Üçün 18 Years |
| Təhsilə Uyğun Cinslər | All |
| Sağlam Könüllüləri qəbul edir | Bəli |
| Kriteriyalar | Inclusion Criteria: Eligible participants will be 18 years and older of both genders. 1. T1a (≤ 4 cm, as measured by the maximal dimension by CT or MRI). Final determination of disease stage is made during the operation by the investigator. All resectable cystic, benign, primary or secondary malignant tumors. 2. Serum creatinine: ≤ 2.5 mg/dL 3. Glomerular filtration rate greater than ≥ 50 ml/min/m2 4. Platelet count ≥ 50,000/mm3 5. Prothrombin time < 18 seconds 6. PTT not >1.5 times control (except for therapeutically; anticoagulated nonrelated medical conditions [e.g., atrial fibrillation]); 7. Serum albumin levels > 3g/dL (Normal range 3.5 to 5 g/dL) Exclusion Criteria: 1. Age younger than 18 years' old 2. Severe uncorrected hypertension (> 180 systolic and >110 diastolic) 3. Uncorrectable coagulopathies (on Plavix, Aspirin or Lovanox) 4. Pregnancy 5. Females who are breast feeding who do not switch the infant to formula prior to surgery 6. Active urinary tract infection 7. T1b (>4 cm) lesion and above 8. Systemic or local infection. 9. Subject has known allergy or intolerance to iodine or human serum albumin. 10. Recent febrile illness that precludes or delays participation preoperatively. 11. Treatment with another investigational drug or other intervention during the study and follow-up period. 12. Anything that would place the individual at increased risk or preclude the individual's full compliance with or completion of the study. |
Nəticə
İlkin nəticə tədbirləri
1. PRIMARY EFFICACY AS A SEALANT: Intra-operative blood loss [Intra-operative]
İkincili Nəticə Tədbirləri
1. SECONDARY SAFETY: Post-operative blood loss requiring return to the operating room [30 days]
2. SECONDARY SAFETY: Prolonged post-operative pancreatic leakage [30 days]
3. SECONDARY SAFETY: Surgical space abscess [30 days]
Digər nəticə tədbirləri
1. SECONDARY EFFICACY: Total operating time (minutes) [Intra-operative assessment]
2. SECONDARY EFFICACY: Pancreas clamp time (minutes) [Intra-operative assessment]
3. SECONDARY EFFICACY: Laser tissue welding time or time to hemostasis (Duration Metric) [Intra-operative assessment]
4. SECONDARY EFFICACY: Length of ICU stays (Duration and cost Metric ) [30 days]
5. SECONDARY EFFICACY: Total hospital stay (Duration and cost Metric ) [3 months]
