Efficacy of Haemocoagulase as a Topical Haemostatic Agent after Minor Oral Surgical Procedures—A Prospective Study

Purpose: Haemocoagulase is a topical haemostatic agent which provides the adequate haemostasis after minor oral surgical procedures and it has also been proved to be beneficial in promoting wound healing. The aim of this study was to check the efficacy of haemocoagulase in stopping the bleeding and its effect over wound healing after the minor oral surgical procedure. Material & Method: This study is comprised of 150 surgical sites in 75 patients. The subjects were divided into 2 groups in which Group 1 consists of 50 surgical sites in 25 patients and Group II consists of 100 surgical sites in 50 patients. Group I comprised of the group of simple extraction. In these patients one tooth socket was selected as haemocoagulase site and the other socket was the control group in which no drug was used to control haemorrhage. Group II comprised of the group of patients with bilateral impactions. 50 sockets and surgical sites were sprinkled with Haemocoagulase, and 50 sockets and surgical sites were used as control side in which no drug was used to control haemorrhage. Results: In Group I bleeding was stopped with the average time of 1.35 minutes, while at control side bleeding was stopped with the average time of 2.25 minutes. In Group II bleeding was stopped with average time for haemostasis being 1.46 minutes, while at control side the bleeding was stopped in an average time of 2.43 minutes. Conclusion: Haemocoagulase after minor oral surgery not only provides faster haemostasis but also enhances healing.

Advances in haemostatic sponges: Characteristics and the underlying mechanisms for rapid haemostasis

In traumatized patients, the primary cause of mortality is uncontrollable continuous bleeding and unexpected intraoperative bleeding which is likely to increase the risk of complications and surgical failure. High expansion sponges are effective clinical practice for the treatment of wound bleeding (irregular/deep/narrow) that are caused by capillaries, veins and even arterioles as they possess a high liquid absorption ratio so can absorb blood platelets easily in comparison with traditional haemostasis treatments, which involve compression, ligation, or electrical coagulation etc. When in contact with blood, haemostatic sponges can cause platelet adhesion, aggregation, and thrombosis, preventing blood from flowing out from wounds, triggering the release of coagulation factors, causing the blood to form a stable polymerized fibre protein, forming blood clots, and achieving the goal of wound bleeding control. Haemostatic sponges are found in a variety of shapes and sizes. The aim of this review is to facilitate an overview of recent research around haemostatic sponge materials, products, and technology. This paper reviews the synthesis, properties, and characteristics of haemostatic sponges, together with the haemostasis mechanisms of haemostatic sponges (composite materials), such as chitosan, cellulose, gelatin, starch, graphene oxide, hyaluronic acid, alginate, polyethylene glycol, silk fibroin, synthetic polymers silver nanoparticles, zinc oxide nanoparticles, mesoporous silica nanoparticles, and silica nanoparticles. Also, this paper reviews commercial sponges and their properties. In addition to this, we discuss various in-vitro/in-vivo approaches for the evaluation of the effect of sponges on haemostasis .

Microfluidics-assisted optimization of highly adhesive haemostatic hydrogel coating for arterial puncture

Although common in clinical practice,bleeding after tissue puncture may cause serious outcomes,especially in arterial puncture.Herein,gelatin-tannic acid composite hydrogels with varying compositions are prepared,and their adhesive properties are further optimized in microfluidic channel-based simulated vessels for haemostasis in arterial puncture.It is revealed that the composite hydrogels on the syringe needles used for arterial puncture should possess underwater adhesion higher than 4.9 kPa and mechanical strength higher than 86.0 kPa.The needles coated with the gelatin-tannic acid composite hydrogel completely prevent blood loss after both vein and arterial puncture in different animal models.This study holds great significance for the preparation of haemostatic needles for vessel puncture,and gelatin-tannic acid hydrogel coated needles may help to prevent complications associated with arterial puncture.