Application of lidocaine expansion liquid in fascia layer separation
By combining lidocaine tumescent solution with bipolar electrosurgical unit, precise separation of the fascia layer is achieved, solving the bleeding problem during fascia layer separation in CIED implantation, improving separation accuracy and safety, and making it suitable for surgical procedures involving thin tissues.
Patent Information
- Application Number
- CN202511004145.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2025-10-28
AI Technical Summary
During CIED implantation, the separation of the superficial and deep fascia layers inevitably leads to bleeding and oozing, especially for patients taking oral antiplatelet or anticoagulant drugs, where the risk is even higher. Existing separation methods are prone to damaging muscle fibers, resulting in complications such as pocket hematoma and pocket infection during pocket creation.
Lidocaine tumescent solution was used to assist in the separation of the fascial layers. A liquid solution with a 1:1 ratio of lidocaine and physiological saline was injected into the space between the fascial layers to form a fluid cavity. This was then combined with bipolar electrocautery to cut within the fluid cavity, achieving separation without active bleeding.
It achieves precise separation of the fascia layer, reduces bleeding, improves separation accuracy, avoids bleeding and tissue damage throughout the process, and is particularly suitable for surgical procedures involving thin tissues.
Abstract
Description
Technical Field
[0001] This invention belongs to the field of tissue separation, specifically relating to the application of lidocaine swelling solution in fascia layer separation. Background Technology
[0002] CIED refers to implantable devices used to treat arrhythmias, the most common of which are pacemakers, defibrillators (ICDs), and cardiac resynchronization therapy devices (CRTs).
[0003] Capsule creation is a crucial step in CIED implantation, but complications such as capsule hematoma and capsule infection can be life-threatening.
[0004] However, while placing the pacemaker in the superficial and deep fascia layers above the pectoralis major muscle is the optimal choice, the creation of the pocket requires separating these layers. Because the fascia layer is thin (typically ≤2mm), conventional separation methods include manual dissection, scissor dissection, and electrocautery. Dissection is highly susceptible to damaging muscle fibers, leading to oozing or bleeding that is difficult to control. This risk is further increased for patients who must take oral antiplatelet or anticoagulant medications.
[0005] Lidocaine is a commonly used local anesthetic and antiarrhythmic drug. Its main function is to block nerve conduction in a localized area, relieving pain, and it is also used to treat certain arrhythmias. Lidocaine's mechanism of action involves blocking sodium channels, reducing the influx of sodium ions into nerve and cardiomyocytes, thereby inhibiting the generation of action potentials and achieving local anesthesia and antiarrhythmic effects. Summary of the Invention
[0006] The purpose of this invention is to provide an application of lidocaine tumescent solution in fascial layer separation, thereby achieving precise separation of the fascial layer without active bleeding and solving the problems mentioned in the background art.
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] An application of lidocaine swelling solution in fascial layer separation, wherein the lidocaine swelling solution comprises lidocaine and physiological saline, and the ratio of lidocaine to physiological saline is 1:1;
[0009] The application is to assist in the separation of the superficial and deep fascia layers.
[0010] Specifically, the assisted separation of the superficial and deep fascia layers includes:
[0011] A lidocaine tumescent solution is prepared and injected between the superficial and deep fascia layers to form a fluid cavity. The fascia layer is then cut and separated within the fluid cavity using a bipolar electrosurgical unit to create a pocket cavity without active bleeding.
[0012] Preferably, the bipolar electrosurgical unit has a working power of 50W.
[0013] Preferably, the interlayer thickness of the fascia-like tissue is ≤2mm.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] This invention applies lidocaine tumescent solution to the separation between fascial tissue layers. By utilizing the physical properties of lidocaine tumescent solution, the fascial tissue components are exposed and a liquid environment is formed, increasing the space for electrocautery operation and thus improving the accuracy of electrocautery separation of deep and superficial fascia. This achieves easy separation of deep and superficial fascia layers while ensuring no bleeding throughout the process. Detailed Implementation
[0016] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below.
[0017] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.
[0018] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.
[0019] Example 1: This example provides an application of lidocaine swelling solution in fascial layer separation. The lidocaine swelling solution includes lidocaine and physiological saline, and the ratio of lidocaine to physiological saline is 1:1.
[0020] The application is to assist in the separation of the superficial and deep fascia layers. Specifically, a syringe is used to inject lidocaine tumescent solution into the space between the superficial and deep fascia layers, so that a fluid cavity of ≥0.5 mm is formed between the fascia layers.
[0021] Specifically, after the fascia layer is separated, it is cut in the fluid cavity using a bipolar electrosurgical unit.
[0022] Isotonic lidocaine solution → competitively inhibits sodium channels → enhances tissue cell membrane stability.
[0023] The interlayer thickness of the fascia-like laminar tissue is 1.5 mm;
[0024] The bipolar electrosurgical unit operates at a frequency of 470kHz and can reduce thermal damage by up to 30% in a liquid environment.
[0025] In vitro model verification 1:
[0026] In an isolated porcine pectoralis major muscle tissue model, a prepared swelling solution containing lidocaine is injected between the deep and superficial fascia layers. The physical properties of the swelling solution expose the components of the deep and superficial fascia layers, improve the precision of layering, and create a liquid environment. This reduces the tissue current density while enhancing ionic conductivity, increasing the space for electrocautery operation, and thus improving the accuracy of electrocautery separation of the deep and superficial fascia. At this point, a bipolar electrocautery can easily separate the deep and superficial fascia layers.
[0027] Validation of the in vitro model, part two:
[0028] In an isolated porcine pectoralis major muscle tissue model, when the liver capsule was separated using the method of this invention, the amount of bleeding was only 1 / 10 of that of traditional blunt dissection, and no liver parenchyma damage occurred.
[0029] Monitoring data:
[0030] Bleeding volume per unit area: 0.05 ml / cm² 2 The goal is to achieve a state of virtually no bleeding throughout the entire process.
[0031] Example 2: This example is basically the same as the previous example, except that the separation of the superficial and deep fascia layers is assisted by:
[0032] Prepare lidocaine tumescent solution and inject it into the space between the superficial and deep fascia layers above the pectoralis major muscle to form a fluid-filled cavity. Then, use a bipolar electrocautery knife to cut and separate the fascia layer in the fluid-filled cavity to form a pocket cavity without active bleeding.
[0033] Specifically, the bipolar electrosurgical unit has a working power of 50W.
[0034] Anesthesia is administered directly at the surgical level, reducing patient pain and providing a high level of comfort throughout the procedure; it avoids causing complete skin damage by administering anesthesia through the skin; and it can precisely separate the superficial and deep fascia, preventing hematoma formation.
[0035] As can be seen from the above, by using chemical swelling fluid to change the physical state of tissue, the electrosurgical unit can achieve an unconventional coagulation effect in a specific liquid environment, solving the problem of structural integrity damage during mechanical separation of thin tissues. This application can be applied to any surgical procedure that requires the separation of thin fascia layers (such as general surgery, plastic surgery, etc.), and is especially suitable for technical scenarios of non-invasive separation of highly blood-supply tissues.
[0036] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. The application of a lidocaine swelling solution in fascia layer separation, characterized in that, The lidocaine swelling solution comprises lidocaine and physiological saline, wherein the ratio of lidocaine to physiological saline is 1:
1. The application is to assist in the separation of the superficial and deep fascia layers.
2. The application of a lidocaine swelling solution according to claim 1 in fascia layer separation, characterized in that, The separation of the assisted superficial and deep fascia layers includes: A lidocaine tumescent solution is prepared and injected between the superficial and deep fascia layers to form a fluid cavity. The fascia layer is then cut and separated within the fluid cavity using a bipolar electrosurgical unit to create a pocket cavity without active bleeding.
3. The application of a lidocaine swelling solution according to claim 2 in fascia layer separation, characterized in that, The bipolar electrosurgical unit has a working power of 50W.
4. The application of a lidocaine swelling solution according to claim 1 in fascia layer separation, characterized in that, The interlayer thickness of the fascia-like tissue is ≤2mm.