Semi-open subcutaneous dilating endoscope

Abstract

The application relates to a semi-open subcutaneous expansion endoscope, which comprises a guide rod (1) and a pair of expansion plates (2), the top end of the guide rod (1) is provided with a handle (4), the bottom end of the guide rod (1) is provided with a V-shaped connecting part (5), the bottom ends of the pair of expansion plates (2) are fixedly connected through a lead-in head (6), and the top ends of the pair of expansion plates (2) are symmetrically hinged on the two sides of the V-shaped connecting part (5). The application has the advantages that the guide rod is semi-open, the expander is inserted into a surgical area, then the muscle soft tissue in the surgical area is expanded, larger size surgical instruments can be used for operation, the soft tissue can be blocked by the expansion plates, the observation is facilitated, the surgical difficulty is reduced, the surgical efficiency is improved, the instrument is operated in a single hole during surgery, the surgical trauma is small, the function of the observation hole and the operation hole can be combined, the operation tool does not need to be absolutely coaxial, the operation tool can be moved in a small range, and the surgical convenience is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a semi-open subcutaneous expansion endoscope. Background Technology

[0002] With the increasing incidence of degenerative spinal diseases and the rising treatment demands of patients, minimally invasive spinal surgery has gained significant attention. Currently, commonly used minimally invasive tools include single-axis endoscopes (such as perforator endoscopes and DELT endoscopes) and unilateral dual-channel endoscopes (UBE endoscopes). As a minimally invasive surgical technique, it offers advantages such as minimal surgical trauma, less intraoperative bleeding, and faster postoperative recovery. It is now widely used in the treatment of spinal diseases such as lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis, and ligamentum flavum ligamentus fixation in the cervical and thoracic vertebrae. However, it still has limitations. Single-axis endoscopes, due to their small cylindrical working channel... The limitations of traditional endoscopic surgery, which only allows for the insertion of delicate and small instruments, result in low surgical efficiency and increased difficulty. Furthermore, the directional control is extremely restricted during uniaxial endoscopic surgery. UBE surgery requires two openings in the surgical area, one for operation and one for observation, increasing surgical trauma. During the procedure, an endoscope with a built-in water jet is inserted into the observation port. Water pressure is used to open up the soft tissue spaces and flush away blood from the surgical area for real-time observation. However, unstable water pressure and drainage stagnation can easily cause blood and fluid to blur the lens, and muscle closure in the surgical area can affect the field of vision, impacting the surgical progress and making the procedure difficult. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a semi-open subcutaneous expansion endoscope.

[0004] The present invention includes a guide rod and a pair of expansion plates. The top end of the guide rod is provided with a handle, and the bottom end of the guide rod is provided with a V-shaped connecting part. The bottom ends of the pair of expansion plates are fixedly connected by an inlet head. The top ends of the pair of expansion plates are symmetrically hinged to both sides of the V-shaped connecting part. Cameras for forming 3D images are provided on both sides of the V-shaped connecting part.

[0005] One side of the guide rod is open, and a pair of openable and closable limiting rings are provided on the upper part of the open side. The V-shaped connecting part is integrally formed with the guide rod.

[0006] The included angle of the V-shaped connector opening should not be less than 90°.

[0007] The four corners at both ends of the V-shaped connector are rounded.

[0008] Both sides of the guide rod opening are integrally formed with communication connection tubes that connect the corresponding camera and the handle. The camera's communication cable is installed inside the communication connection tube. A flushing pipe is provided inside the communication connection tube on one side, and a water outlet connected to the flushing pipe is provided inside the V-shaped connection.

[0009] The support plate is a flexible metal plate, and the width of the support plate gradually narrows from top to bottom, while the thickness of the support plate gradually decreases from top to bottom.

[0010] A pull rod is provided on the rear side of the guide rod, and a locking block is provided at the bottom end of the pull rod. At least one of the pair of expansion plates is provided with a set of locking grooves that cooperate with the locking block at the top. A pressure plate is provided on the handle to drive the pull rod to move up and down.

[0011] The guide rod has a pull rod mounting groove on its rear side, the pull rod is located in the pull rod mounting groove, the handle has a pressure plate mounting groove, the pressure plate is hinged in the pressure plate mounting groove through a rotating shaft, and a torsion spring for controlling the reset of the pressure plate is provided on the rotating shaft. The top end of the pull rod is hinged to one end of the pressure plate.

[0012] The top end of the expansion plate is hinged to the V-shaped connecting part through the connecting shaft. The top end of the expansion plate is a disc structure coaxial with the connecting shaft, and a set of locking grooves are arranged in a ring on the inside of the disc structure.

[0013] The inlet head has an inlet hole.

[0014] The advantages of this invention are: the guide rod is semi-open, extending into the surgical area via a retractor, and then retracting the muscle and soft tissue in the surgical area to allow for the entry and operation of larger surgical instruments. Simultaneously, the retractor plate prevents soft tissue closure, facilitating observation, reducing surgical difficulty, and improving surgical efficiency. This instrument operates within a single port, resulting in minimal surgical trauma. It combines the functions of an observation port and an operating port, and the operating tools do not require absolute coaxiality, allowing for a small range of movement and improving surgical convenience. Furthermore, it is multifunctional and can replace the observation endoscope used in UBE surgery. Its retractor plate can retract the muscle and soft tissue, expanding the surgical field of view and providing significant convenience for the procedure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the rear structure of the present invention.

[0017] Figure 3 yes Figure 2 A partially enlarged structural diagram.

[0018] Figure 4 This is a schematic diagram of the tie rod connection structure of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure in the positioning and insertion state of the support plate.

[0020] Figure 6 This is a schematic diagram of the structure of the present invention in its expanded state.

[0021] Figure 7 This is a schematic diagram of the structure in use of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the description of the embodiments of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, if terms such as "first" or "second" appear in the description of this invention, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0026] As shown in the attached figure, the present invention includes a guide rod 1 and a pair of support plates 2. The top end of the guide rod 1 is provided with a handle 4, and the bottom end of the guide rod 1 is provided with a V-shaped connecting part 5. The bottom ends of the pair of support plates 2 are fixedly connected to each other by an inlet head 6. The top ends of the pair of support plates 2 are symmetrically hinged to both sides of the V-shaped connecting part 5. Cameras 17 for forming 3D images are provided on both sides of the V-shaped connecting part 5.

[0027] Working method: The bottom ends of a pair of expansion plates 2 are fixedly connected by an inlet head 6, making the bottom ends of the two pairs of expansion plates 2 a single unit, while the top ends of the pair of expansion plates 2 are independently connected to both sides of the V-shaped connecting part 5. The pair of expansion plates 2 can only rotate towards the opening side of the V-shaped connecting part 5. The pair of expansion plates 2 are assembled in a V-shape to form a conical head structure. By default, the pair of expansion plates 2 are vertically located at the bottom end of the guide rod 1. When in use, the pair of expansion plates 2 are inserted into the surgical area until the bottom ends of the pair of expansion plates 2 touch the bone. Then, the guide rod 1 is pressed down. At this time, the pair of expansion plates 2 rotate after being subjected to pressure. The upper end of the pair of expansion plates 2 is spread open to both sides by the V-shaped connecting part 5, and the front end is gathered by the inlet head 6 to form a heart-shaped structure. The heart-shaped structure can stretch the muscle. The middle part is the surgical area. Two cameras 17 are symmetrically set and connected to the external host to form a 3D image of the surgical area, which is convenient for medical staff to operate.

[0028] During single-port endoscopic surgery, surgical instruments can be inserted into the heart-shaped surgical area along the guide rod 1 for operation, meaning that both operation and observation are completed within the same port.

[0029] During UBE surgery (i.e., surgery with an operating port and an observation port), the retractor endoscope can be used as a retractor to open up soft tissue and allow the endoscope to display the surgical area. Surgical instruments are then inserted into the heart-shaped surgical area through the operating port. Alternatively, the UBE observation endoscope can be fixed within the limiting ring 8 and used simply as an auxiliary subcutaneous retractor for the UBE observation endoscope to increase the convenience of the surgical operation.

[0030] Preferably, one side of the guide rod 1 is open. In this case, the guide rod 1 has an open arc-shaped groove structure. The opening on one side facilitates cleaning after use and reduces the area of ​​skin and soft tissue being stretched, thus minimizing trauma. A pair of openable limiting rings 8 are provided on the upper part of the opening side. One end of the limiting ring 8 is hinged to one side of the guide rod 1 to facilitate rotation of the limiting ring 8, and the other end of the limiting ring 8 is provided with a locking hook for locking with the other side of the guide rod 1. When the endoscope is needed, the limiting ring 8 is locked on the opening side of the guide rod 1 and located on the outer side of the skin to limit the position of the endoscope.

[0031] When the guide rod 1 needs to be inserted into the surgical instrument for operation, the limiting ring 8 opens to facilitate the insertion and operation of the instrument.

[0032] Preferably, the V-shaped connecting part 5 is integrally formed with the guide rod 1.

[0033] Preferably, the included angle of the opening of the V-shaped connecting part 5 is not less than 90°. In this case, the included angle of the opening of the V-shaped connecting part 5 is 90°, and both sides of the V-shaped connecting part 5 are tangent to the arc surface of the guide rod 1, so that the connection between the V-shaped connecting part 5 and the guide rod 1 is smooth.

[0034] Furthermore, the four corners of the upper and lower ends of the V-shaped connector 5 are all rounded. The V-shaped connector 5 avoids scratching the muscle tissue with its sharp ends when it is inserted into or withdrawn from the muscle tissue.

[0035] Preferably, the spreading plate 2 is an elastic metal plate, and the width of the spreading plate 2 gradually narrows from top to bottom, and the thickness of the spreading plate 2 gradually decreases from top to bottom. This makes the top end strong and the bottom end weak, allowing the top end to rotate stably, while the bottom end can be easily bent and spread to both sides.

[0036] Furthermore, a pull rod 10 is provided on the rear side of the guide rod 1, and a locking block 11 is provided at the bottom end of the pull rod 10. At least one of the pair of opening plates 2 is provided with a set of locking grooves that cooperate with the locking block 11 on its top. A pressure plate 12 is provided on the handle 4 to drive the pull rod 10 to move up and down.

[0037] The guide rod 1 has a pull rod mounting groove on its rear side, the pull rod 10 is located in the pull rod mounting groove, the handle 4 has a pressure plate mounting groove, the pressure plate 12 is hinged in the pressure plate mounting groove through a rotating shaft, and a torsion spring for controlling the reset of the pressure plate 12 is provided on the rotating shaft, and one end of the top of the pull rod 10 is hinged to one end of the pressure plate 12.

[0038] The top end of the support plate 2 is hinged to the V-shaped connecting part 5 through the connecting shaft. The top end of the support plate 2 is a disc structure coaxial with the connecting shaft, and a set of locking grooves are arranged in a ring on the inner side of the disc structure.

[0039] The locking block 11 is used to fix the angle of the spreader plate 2 after it is spread open. By default, the locking block 11 is locked to the pair of spreader plates 2. The pressure plate 12 is a lever structure. When the pair of spreader plates 2 need to be spread open, press down on one end of the pressure plate 12, and the other end of the pressure plate 12 will tilt up. At this time, the pull rod 10 and the locking block 11 move upward a certain distance, that is, the locking block 11 moves out of the locking groove, and the pair of spreader plates 2 can be rotated and spread open. After completion, release the pressure plate 12. Under the action of the torsion spring, the pull rod 10 and the locking block 11 return to the locked position. The locking block 11 is locked back into the locking groove, limiting the position of the pair of spreader plates 2 and preventing them from resetting and closing.

[0040] Furthermore, both sides of the opening of the guide rod 1 are integrally formed with communication connecting pipes 18 that connect the corresponding camera 17 and the handle 4. The communication wire of the camera 17 is installed in the communication connecting pipe 18. A flushing pipe 19 is provided inside the communication connecting pipe 18 on one side, and an outlet 20 connected to the flushing pipe 19 is provided inside the V-shaped connecting part 5.

[0041] In this case, the communication connecting tube 18 and the guide rod 1 are integrally formed, that is, the communication connecting tube 18 is rolled backward from the side of the guide rod 1 into a cylindrical shape, so that the two sides of the guide rod 1 have a smooth arc-shaped structure. The locking hook of the limiting ring 8 is an arc-shaped hook head that matches the cylindrical structure. When the limiting ring 8 is opened, the hook head end can be pushed outward.

[0042] It is welded separately to the rear side of the guide rod 1 to connect to external high-pressure water. The water outlet 20 is used to rinse the heart-shaped surgical area and improve the field of vision of the surgical area.

[0043] Furthermore, the inlet head 6 is equipped with an inlet hole. After the operating hole is made on the body before the operation, a set of progressively expanding guide rods 25 are used to make a hole on the lumbar spine for positioning. The inlet hole of the inlet head 6 is inserted into the surgical area along the expansion guide rod 25. Then the expansion guide rod 25 is pulled out, and the expansion plate 2 is pressed again, so that the pair of expansion plates 2 are deformed and opened by force. The inlet hole can quickly guide the expansion plate 2 to accurately enter the target surgical position.

Claims

1. A semi-open subcutaneous expansion endoscope, characterized in that... It includes a guide rod (1) and a pair of expansion plates (2). The top end of the guide rod (1) is provided with a handle (4), and the bottom end of the guide rod (1) is provided with a V-shaped connecting part (5). The bottom ends of the pair of expansion plates (2) are fixedly connected by an inlet head (6), so that the bottom ends of the two expansion plates (2) are integrated. The top ends of a pair of support plates (2) are symmetrically hinged to both sides of the V-shaped connector (5); the pair of support plates (2) can only rotate toward the opening side of the V-shaped connector (5); the pair of support plates (2) are assembled in a V-shape to form a conical head structure; by default, the pair of support plates (2) are vertically located at the bottom end of the guide rod (1). The V-shaped connector (5) is provided with cameras (17) on both sides for forming 3D images. One side of the guide rod (1) is open, and a pair of openable limiting rings (8) are provided on the upper part of the open side. The V-shaped connecting part (5) is integrally formed with the guide rod (1). The included angle of the opening of the V-shaped connecting part (5) is not less than 90°. The expansion plate (2) is an elastic metal plate. The width of the expansion plate (2) gradually narrows from top to bottom, and the thickness of the expansion plate (2) gradually decreases from top to bottom. The inlet head (6) is provided with an inlet hole.

2. The semi-open subcutaneous expansion endoscope according to claim 1, characterized in that... The upper and lower ends of the V-shaped connecting part (5) have rounded corners at all four corners.

3. The semi-open subcutaneous expansion endoscope according to claim 1, characterized in that... The guide rod (1) has a communication connection tube (18) integrally formed on both sides of the opening, which connects the corresponding camera (17) and the handle (4). The communication wire of the camera (17) is installed in the communication connection tube (18). A flushing pipe (19) is provided inside the communication connection tube (18) on one side. A water outlet (20) connecting the flushing pipe (19) is provided inside the V-shaped connection part (5).

4. The semi-open subcutaneous expansion endoscope according to claim 1, characterized in that... A pull rod (10) is provided on the rear side of the guide rod (1), and a locking block (11) is provided at the bottom end of the pull rod (10). At least one of the pair of opening plates (2) has a set of locking grooves that cooperate with the locking block (11) on its top. A pressure plate (12) is provided on the handle (4) to drive the pull rod (10) to move up and down.

5. A semi-open subcutaneous expansion endoscope according to claim 4, characterized in that... The guide rod (1) has a pull rod mounting groove on its rear side. The pull rod (10) is located in the pull rod mounting groove. The handle (4) has a pressure plate mounting groove. The pressure plate (12) is hinged in the pressure plate mounting groove through a rotating shaft. A torsion spring for controlling the reset of the pressure plate (12) is provided on the rotating shaft. One end of the top of the pull rod (10) is hinged to one end of the pressure plate (12).

6. A semi-open subcutaneous expansion endoscope according to claim 5, characterized in that... The top end of the support plate (2) is hinged to the V-shaped connecting part (5) through the connecting shaft. The top end of the support plate (2) is a disc structure coaxial with the connecting shaft, and a set of locking grooves are arranged in a ring on the inner side of the disc structure.

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