Study of Collagen-Based Thrombin Hemostat for the Control of Bleeding in Spinal Surgery

DALIM TISSEN Co., Ltd.130 enrolled

Overview

This clinical trial evaluates the effectiveness and safety of a collagen-based hemostatic agent containing thrombin in patients undergoing spinal surgery. The study compares this investigational product with an existing hemostatic agent to assess whether it performs equally well in controlling surgical bleeding. Patients with spinal stenosis, tumors, or trauma who require spinal surgery will be enrolled. The hemostat will be applied intraoperatively when grade 3 bleeding is observed. The study aims to determine how well the product works in achieving hemostasis and its safety when it is used during surgery.

This was a randomized, single-blind, active-controlled clinical trial designed to assess the non-inferiority of a collagen-based thrombin-containing topical hemostat (CollaStat) compared to an existing hemostatic agent (Floseal) in patients undergoing spinal surgery. The investigational product was designed to be highly biocompatible to reduce adverse effects in case of in-body residue after application. Patients who underwent spinal surgery due to spinal stenosis, tumors, or trauma were enrolled and randomized in a 1:1 ratio. The hemostatic products were applied intraoperatively at bleeding sites classified as grade 3. For grade 4 or 5 bleeding, temporary hemostatic procedures were performed first to reduce bleeding intensity before applying the assigned hemostat. The study's primary endpoint was the hemostasis success rate, defined as the achievement of hemostasis within 1 minute, 2 minutes, 3 minutes, 6 minutes, and 10 minutes of product application without additional intervention. Secondary outcomes included time to hemostasis, number of hemostatic units used per patient, volume of postoperative surgical drainage, length of hospital stay, incidence of intraoperative rebleeding, occurrence of postoperative hematoma or surgical site infection, and overall hemostatic effect assessed across all treated bleeding sites.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Interventions

CollaStat®DEVICE

Clinical subjects are enrolled after the clinical investigator confirms that there are bleeding sites where hemostasis by normal procedures (compression, suturing, electrosurgical scalpel, etc.) is ineffective or difficult to perform. To arrest intraoperative bleeding, the study group is treated with Dalim Tissen's CollaStat® and compressed with general gauze.

Floseal®DEVICE

Clinical subjects are enrolled after the clinical investigator confirms that there are bleeding sites where hemostasis by normal procedures (compression, suturing, electrosurgical scalpel, etc.) is ineffective or difficult to perform. To arrest intraoperative bleeding, the control group is treated with Baxter's Floseal® and compressed with general gauze

Eligibility

Sex: ALLMin age: 20 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. An individual who has voluntarily signed the written consent form for participating in the research as a trial subject 2. Patients aged 20 or older 3. Patients who are able to participate throughout the entire clinical trial period 4. Patient scheduled to have spinal surgery due to spinal stenosis, spinal tumor, injury, etc. 5. Patients for whom hemostasis is difficult to achieve using standard procedures 6. Patients with grade 3 or higher bleeding \* Grade 4 or 5 bleeding is reduced to grade 3 by normal procedures (compression, sutures, electrosurgical scalpel, etc.). Exclusion Criteria: 1. Pregnant women or those planning to become pregnant within 1 month after application of the collagen-based hemostat 2. Individuals with hypersensitivity to bovine-, porcine-, or animal-derived materials 3. Individuals deemed inappropriate for participation by the investigators 4. Patients who are using treatments that may affect the test results 5. Patients with active infections at the surgical site 6. Patients with contraindications to the use of local hemostatic materials

Outcomes

Primary Outcomes

Hemostasis success rate

After applying the haemostatic agent to the bleeding site, gentle compression is performed using surgical gauze. After lifting the gauze and washing off the excess hemostatic agent, check if hemostasis is maintained

Time frame: Hemostasis at the first bleeding site is confirmed at 1 minute, 2 minutes, 3 minutes, 6 minutes, and 10 minutes

Secondary Outcomes

Time to hemostasis

Record the time point when hemostasis is achieved.

Time frame: Intraoperation

Number of hemostats used

Record the number of hemostats used until hemostasis.

Time frame: Intraoperation

Length of Hospital Stay

Length of hospital stay is defined as the number of days from the date of surgery (Visit 2) to the date of hospital discharge.

Time frame: From the date of surgical operation (Visit 2) until the date of hospital discharge, assessed up to 1 week (±3 days) after surgery

Incidence of adverse events

Adverse events include hematoma and infection.

Time frame: From first application of the investigational medical device through end of follow-up (up to 8 weeks post-surgery)

Drain amount

Record the drain amount until the 3rd postoperative day.

Time frame: 3 days after surgery

Presence of rebleeding at the index bleeding site

Time frame: From first application (Visit 2; day of surgery) through end of follow-up (up to 8 weeks post-surgery)

Evaluation of Handling Characteristics (as Assessed by the Surgeon)

Hemostasis will be assessed intraoperatively at all treated bleeding sites after application of the investigational product (IP). Only the assigned IP should be used for the same patient.

Time frame: Intraoperative