Where is the cavernous injection injected?

For cavernous injection, the middle part of the lateral side of the corpus cavernosum of the penis is usually selected as the injection point. The injection site needs to avoid blood vessels and nerves. It mainly includes the middle 1/3 of the dorsal part of the penis, the junction area of ​​the cavernous bodies on both sides, and the outside of the root of the penis. The specific selection must be determined by the doctor based on the patient's anatomy.

1. Middle section of dorsal side:

The dorsal middle 1/3 of the penis is a commonly used injection site, where the tunica cavernosa is thicker and has fewer blood vessels. During the operation, the penis needs to be pulled to one side to fully expose the corpus cavernosum on the injection side. The needle should be inserted vertically at 90 degrees to the penis. There will be an obvious breakthrough after passing through the skin. Injection at this site can reduce the risk of hematoma, but care should be taken to avoid the dorsal penile nerve in the dorsal midline.

2. Side junction area:

The lateral area at the junction of the cavernous bodies on both sides is also a safe injection site, where the thickness of the tunica albuginea is moderate and away from major blood vessels. When injecting, you need to fix the penis body with your thumb and index finger, and insert the needle at 10 o'clock or 2 o'clock on the side of the penis body to a depth of about 5-8 mm. This position is suitable for patients with long-term repeated injections and can reduce the risk of local fibrosis.

3. Outside of the root:

The outside of the base of the penis, close to the scrotum, can be used for injections in patients with special body types. This area has a large cavernous body but a dense distribution of nerve endings. During the operation, the penis needs to be pulled to the opposite side, the needle is inserted into the projection area of ​​the corpus cavernosum of the penis, and the needle insertion angle is adjusted to a 45-degree oblique insertion. The injection pain at this site is more obvious and is usually used as an alternative site.

4. Avoid blood vessels and nerves:

Before injection, it must be palpated to confirm that the dorsal penile artery, dorsal nerve and other major structures are avoided. Injection is absolutely prohibited in the cavernous area of ​​the urethra on the ventral side of the penis, and the dorsal midline vascular and nerve bundle distribution area must also be strictly avoided. It is recommended to change the site for each injection, and the interval between repeated injections at the same site should be greater than 1 week to prevent local scar formation.

5. Key points for professional operation:

Standard operation requires the use of 29-30G fine needles, strict disinfection of the skin before injection, and withdrawal of blood after the needle is inserted before injecting the drug. The bolus speed should be slow and even, and press for 5 minutes immediately after injection. It is recommended that the first injection be performed under the guidance of a doctor. After mastering the correct anatomical positioning and injection techniques, self-injection at home can be considered.

After cavernous injection, it is recommended to avoid strenuous exercise or sexual life for 24 hours. Daily warm water sitz baths can be used to promote local blood circulation. Keep the injection site clean and dry. If persistent pain, priapism, or subcutaneous congestion occurs for more than 3 days, seek medical attention promptly. Intake more fruits and vegetables rich in vitamin C in the diet to help repair blood vessels, and avoid smoking, drinking and other habits that affect blood vessel function. Change injection sites regularly and keep records. Long-term users need to evaluate cavernous fibrosis every 3 months.