Structural features and advantages
Dimensional features
The 3.5MM diameter design allows the shears to pass smoothly through the UBE surgical channel. In spinal surgery, the surgical channel is relatively narrow, and this size ensures that the instrument can reach the surgical site without causing excessive pressure on the tissue around the channel. The 180MM length provides a sufficient extension range for operations inside the spine, making it convenient for doctors to process tissues in the appropriate operating position.
Straight design
The straight structure allows the shears to have better linear accessibility during operation. In some spinal surgical scenarios, such as when dealing with relatively straight anatomical areas or when it is necessary to insert instruments in a straight line for shearing, straight shears have advantages. For example, when shearing the protruding nucleus pulposus tissue in the central part of the intervertebral disc, or when dealing with diseased tissue on a straight path that is relatively forward or backward in the spinal canal, it can reach the target position more directly.
Pinless design
The pinless design makes the operation of the shears more flexible. Doctors can freely control the force and angle of shearing according to the specific conditions of the tissue, such as thickness, toughness, etc. Compared with shears with a pinned design, this flexibility can better adapt to different surgical needs. For example, when dealing with soft nucleus pulposus tissue and hard osteophyte tissue, the shearing method can be adjusted immediately according to the actual situation to avoid damage to the tissue due to the fixed shearing mode.
Application scenarios in spinal surgery
Application of intervertebral disc surgery
In intervertebral disc herniation surgery, straight shears can be used to shear the protruding nucleus pulposus of the intervertebral disc. After locating the protruding nucleus pulposus through the endoscope, the shears can directly reach the nucleus pulposus tissue along the channel. For larger pieces of nucleus pulposus tissue, can be cut into small pieces to facilitate subsequent removal with nucleus pulposus forceps. In addition, for the ruptured part of the annulus fibrosus produced during the degeneration of the intervertebral disc, if its edge is irregular or affects the surgical operation, it can also be trimmed with this shear to make the surgical area neater.
Spinal canal decompression operation
In the surgical treatment of spinal stenosis, this shear can be used to deal with the diseased tissue in the spinal canal. For example, when there is hyperplastic scar tissue in the spinal canal compressing the nerves, the straight shears can directly reach the lesion and cut the scar tissue into suitable small pieces for easy cleaning. Some smaller osteophytes, if their position is convenient for linear operation, can also be partially removed with shears to reduce the pressure on the nerves and achieve the purpose of spinal canal decompression.
Tissue separation and debridement
During spinal surgery, it is often necessary to separate adhered tissues and clean up debris in the surgical area. The shears can be used to separate soft tissues that are adhered together. For example, soft tissue adhesions may occur after spinal trauma or surgery. By cutting the adhesions into small segments, the tissues can be effectively separated. At the same time, inflammatory tissue fragments and small calcification foci in the surgical area can also be cleaned with shears to keep the surgical area clean and facilitate postoperative recovery.
Operation precautions and skills
Operation precautions
Since the surgery is performed under endoscopic visualization, it is necessary to ensure that the endoscopic field of view is clear and accurately judge the relationship between the shears and the surrounding tissues. During insertion and operation, special attention should be paid to avoid damaging important tissues such as nerves and blood vessels. Because the pinless design requires more precise force control, care should be taken to avoid excessive force during use to prevent tissue tearing or bleeding.
Operation skills
Insert skills: According to the anatomical path observed by the endoscope and the structural characteristics of the surgical site, slowly insert the shearing forceps in a straight line along the natural anatomical gap or the established working channel. During the insertion process, pay attention to the reaction of the surrounding tissue to avoid damage to the surrounding tissue by forced insertion.
Shearing skills: When performing the shearing operation, first gently bring the cutting edge of the shearing forceps close to the target tissue, and adjust the shearing angle and force appropriately according to the size, thickness, and toughness of the tissue. For softer tissues, you can use a smaller force and a wider blade contact area for shearing; for harder tissues, such as osteophytes, you can increase the force appropriately, but pay attention to performing small-scale shearing in multiple times. During the entire operation, it is necessary to combine the real-time observation of the endoscope and flexibly adjust the position and operation method of the shearing forceps to achieve the best surgical effect.
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