I. Therapeutic Principles of TF-02Y Medium Frequency Therapy Device

1. Analgesic Effect: (1) Medium frequency current can excite the thick fibers of peripheral nerves, inhibiting the thin fibers that transmit pain sensations through "gate" control, thereby achieving analgesic effects. (2) Medium frequency current can dilate blood vessels, promote blood circulation, and accelerate the elimination of local pain-inducing substances. (3) Medium frequency electrical stimulation can also prompt the body to release morphine-like substances with analgesic effects.

2. Improve Local Blood Circulation and Promote Inflammation Resolution: (1) Axon Reflex and Triple Response: The axon reflex refers to the process where electrical stimulation applied to the body surface travels via afferent nerves to the dorsal horn of the spinal cord, exciting efferent nerves and causing dilation of small arteries in the skin, resulting in diffuse redness under the electrodes. Stimulation of the skin also releases substances such as histamine, substance P, and acetylcholine, which can dilate arteries. Additionally, electrical stimulation itself can directly cause arterial dilation. These three aspects are collectively referred to as the triple response. (2) Muscle Contraction Effect: Low-frequency modulated waves or interference waves can induce muscle contractions. The rhythmic contraction and relaxation of muscles create a "pump" effect, promoting the回流 of blood and lymphatic fluid. (3) Metabolic Products of Muscle Activity: Metabolic byproducts of muscle activity, such as lactic acid, ATP, and ADP, have significant vasodilatory effects.

3. Soften Scar Tissue and Release Adhesions: Medium frequency current can widen the gaps between cells and tissues, loosening adhered connective tissue fibers, muscle fibers, and nerve fibers.

4. Excite Neuromuscular Tissue: Low-frequency modulated waves or interference waves can alter the ion permeability of cell membranes, leading to changes in membrane polarity, depolarization of membrane potential, and the generation of action potentials, thereby exciting nerves and muscles and inducing muscle contractions.

II. Examples of Indications

No.	Mechanism of Action	Examples of Indications	Contraindications
1	Analgesic Effect	Frozen shoulder, lateral epicondylitis, cervical spondylosis, lumbar disc herniation, degenerative osteoarthropathy, rheumatic arthritis, rheumatoid arthritis, sprains, contusions, myofibrositis, muscle strain, stenosing tenosynovitis, pelvic inflammatory disease, adnexitis, chronic pharyngitis, mammary gland hyperplasia, sciatica, peripheral nerve injuries, joint contractures, chronic prostatitis.	Bleeding tendencies, local acute suppurative inflammation, local malignant tumors, area with cardiac pacemakers, area with metal implants, cardiac region, lower abdomen of pregnant women.
2	Improve Local Blood Circulation, Promote Inflammation Resolution	Frozen shoulder, lateral epicondylitis, cervical spondylosis, lumbar disc herniation, degenerative osteoarthropathy, rheumatic arthritis, rheumatoid arthritis, sprains, contusions, myofibrositis, muscle strain, stenosing tenosynovitis, pelvic inflammatory disease, adnexitis, chronic pharyngitis, mammary gland hyperplasia, sciatica, peripheral nerve injuries, joint contractures, chronic prostatitis, myositis, delayed fracture healing, Raynaud's disease.
3	Soften Scar Tissue and Release Adhesions	Scars, scar contractures, postoperative adhesions, intestinal adhesions, post-inflammatory sclerosis, post-injection indurations, penile cavernosum indurations, organized hematoma, stenosing tenosynovitis.
4	Excite Neuromuscular Tissue	Muscle dysfunction after nerve or muscle injuries, disuse muscle atrophy, postoperative intestinal paralysis, urinary retention, constipation, vocal cord paralysis, gastroptosis.

III. Applicable Departments: Traditional Chinese Medicine Department, Physiotherapy Department, Rehabilitation Department, Orthopedics and Traumatology Department, Pain Department, Rheumatology Department, Dermatology Department, Gynecology Department.

IV. Product Features:

Output circuit break warning function to effectively prevent electric shock to patients

Manual tightening of connecting wires and main unit to prevent accidental "disconnection" during treatment

Equipped with two sizes of electrodes to meet treatment needs for different body parts

Includes two sets of 1-meter-long adhesive straps for versatile fixation, solving fixation challenges in different areas