Semi-open subcutaneous distraction endoscope

Abstract

A semi-open type subcutaneous distraction endoscope comprises a guide rod (1) and a pair of distraction plates (2), a handle (4) is arranged at one end of the top of the guide rod (1), a V-shaped connecting portion (5) is arranged at one end of the bottom of the guide rod (1), one ends of the bottoms of the pair of distraction plates (2) are fixedly connected through a leading-in head (6), and one ends of the tops of the pair of distraction plates (2) are symmetrically hinged to the two sides of the V-shaped connecting portion (5) respectively. The device has the advantages that the guide rod is in a semi-open type and extends into an operation area through the dilator, then muscle soft tissue is dilated in the operation area, a larger-size operation instrument can enter the device for operation, meanwhile, the dilating plate can prevent the soft tissue from being closed, observation is facilitated, the operation difficulty is reduced, the operation efficiency is improved, the device is operated in a single hole in the operation process, the operation wound is small, and the operation efficiency is high. And the operation tool does not need to be absolutely coaxial and can move in a small range, so that the operation convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a semi-open subcutaneous distraction endoscope. Background Art

[0002] As the incidence of degenerative spinal diseases increases year by year, and as patients' treatment requirements become higher and higher, minimally invasive spinal surgery has attracted much attention. Currently, the commonly used minimally invasive operation tools include single-axis endoscopes (hole endoscopes and DELT endoscopes, etc.) and unilateral double-channel endoscopes (UBE endoscopes). As a minimally invasive surgical technique, it has the advantages of less surgical damage, less intraoperative bleeding, and faster postoperative recovery. It has been widely used in the treatment of spinal diseases such as lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis, and cervical and thoracic ligamentum flavum solidification. However, it still has shortcomings. The single-axis endoscope is limited by its small cylindrical working channel. The endoscopic surgery can only insert delicate and small operating instruments, which leads to low efficiency and increased difficulty of surgical operation. In addition, the operating direction is extremely limited during single-axis endoscopic surgery. UBE surgery requires two holes to be opened in the surgical area, one as an operating hole and the other as an observation hole, which increases surgical trauma. During the operation, an endoscope with a built-in water spray pipe needs to be inserted into the observation hole. The water pressure of the water injection opens the soft tissue gap and washes away the blood in the surgical area for real-time observation. However, due to unstable water pressure and drainage stasis, blood and water can easily blur the lens and the muscles in the surgical area can be closed, affecting the field of view, affecting the progress of the operation, and causing difficulties in surgical operation. Summary of the invention

[0003] The purpose of the present invention is to provide a semi-open subcutaneous distraction endoscope to address the above-mentioned deficiencies.

[0004] The present invention comprises a guide rod and a pair of spreading plates, wherein a handle is provided at the top end of the guide rod, a V-shaped connecting portion is provided at the bottom end of the guide rod, the bottom ends of the pair of spreading plates are fixedly connected by an introduction head, and the top ends of the pair of spreading plates are symmetrically hinged on both sides of the V-shaped connecting portion; cameras for forming 3D images are provided on both sides of the V-shaped connecting portion.

[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, and the V-shaped connecting part is integrally formed with the guide rod.

[0006] The opening angle of the V-shaped connection is not less than 90°.

[0007] The four corners of the upper and lower ends of the V-shaped connecting part are all inverted arc-shaped rounded corners.

[0008] Communication connecting tubes connecting the corresponding camera and the handle are integrally formed on both sides of the opening of the guide rod. The communication wires of the camera are installed in the communication connecting tube. A flushing pipe is provided on the inside of the communication connecting tube on one side, and a water outlet connected to the flushing pipe is provided on the inside of the V-shaped connecting part.

[0009] The expansion plate is an elastic metal plate, the width of the expansion plate gradually narrows from top to bottom, and the thickness of the expansion 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 one end of the bottom of the pull rod. A group of locking grooves matching the locking block are provided on the top of at least one of the pair of support plates, and a pressure plate for driving the pull rod to move up and down is provided on the handle.

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

[0012] One end of the top of the expansion plate is hinged to the V-shaped connection part through a connecting shaft. The top end of the expansion plate is a disc structure coaxial with the connecting shaft, and a group of locking grooves are arranged in an annular array on the inner side of the disc structure.

[0013] An introduction hole is arranged on the introduction head.

[0014] The advantages of the present invention are: the guide rod is semi-open, and extends into the surgical area through the expander, and then expands the muscle and soft tissue in the surgical area, so that larger surgical instruments can enter for operation. At the same time, the expansion plate can block the closure of the soft tissue, which is convenient for observation, reduces the difficulty of surgery, and improves surgical efficiency. The instrument is operated in a single hole during surgery, with little surgical trauma, and can have the functions of both the observation hole and the operation hole. The operating tool does not need to be absolutely coaxial, and can move in a small range, which improves the convenience of surgery. It is also multifunctional and can replace the observation endoscope of UBE surgery. Its expansion plate can expand the muscle and soft tissue to expand the field of view of the surgical area, providing great convenience for surgery. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0017] Figure 3 yes Figure 2 Schematic diagram of the partially enlarged structure.

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

[0019] Figure 5 It is a structural schematic diagram of the positioning and insertion state of the expansion plate.

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

[0021] Figure 7 It is a schematic diagram of the structure of the present invention in use state. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so 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 the present invention, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", etc. appear in the description of the present invention, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] As shown in the accompanying drawings, the present invention includes a guide rod 1 and a pair of support plates 2, a handle 4 is provided at the top end of the guide rod 1, a V-shaped connecting portion 5 is provided at the bottom end of the guide rod 1, the bottom ends of the pair of support plates 2 are fixedly connected by an introduction head 6, the top ends of the pair of support plates 2 are symmetrically hinged on both sides of the V-shaped connecting portion 5, and cameras 17 for forming 3D images are provided on both sides of the V-shaped connecting portion 5.

[0027] Working method: the bottom ends of a pair of expansion plates 2 are fixedly connected by an introduction head 6, so that the bottom ends of the two pairs of expansion plates 2 are integrated, and the top ends of the pair of expansion plates 2 are independently connected to the two sides of the V-shaped connection part 5, and the pair of expansion plates 2 can only rotate toward the opening side of the V-shaped connection 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 extended into the surgical area until the bottom ends of the pair of expansion plates 2 touch the bone, and then the guide rod 1 is pressed downward. At this time, the pair of expansion plates 2 are rotated after being subjected to pressure, and the upper ends of the pair of expansion plates 2 are expanded to both sides by the V-shaped connection part 5, and the front ends are gathered through the introduction head 6 to form a peach heart structure. The peach heart structure can expand the muscles, and the middle part is the surgical area. The two cameras 17 are symmetrically arranged 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 extended along the guide rod 1 into the heart-shaped surgical area for operation, that is, operation and observation are completed in the same hole.

[0029] During UBE surgery (i.e., surgery with an operating hole and an observation hole), the expansion endoscope can be used as a expander to expand the soft tissue and the endoscope to display the surgical area, and the surgical instruments enter the heart-shaped surgical area through the operating hole for operation. The UBE observation endoscope can also be fixed in the limiting ring 8 and used simply as an auxiliary subcutaneous expansion tool for the UBE observation endoscope to increase the convenience of surgical operation.

[0030] Preferably, one side of the guide rod 1 is open. The guide rod 1 in this case is an open-type arc-shaped groove structure. One side of the opening is convenient for cleaning after use, and can also reduce the stretching area of ​​the skin soft tissue and reduce trauma. A pair of openable and closable 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 the rotation of the limiting ring 8. 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 is located outside the skin to limit the endoscope.

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

[0032] Preferably, the V-shaped connecting portion 5 and the guide rod 1 are formed integrally.

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

[0034] Furthermore, the four corners of the upper and lower ends of the V-shaped connecting portion 5 are all rounded, so that the sharp end of the V-shaped connecting portion 5 can avoid scratching the muscle tissue when it is inserted into the muscle tissue or withdrawn from the muscle tissue.

[0035] Preferably, the opening plate 2 is an elastic metal plate, the width of the opening plate 2 gradually narrows from top to bottom, and the thickness of the opening plate 2 gradually decreases from top to bottom, so that the strength of the top end is large and the strength of the bottom end is small, the top end is easy to rotate stably, and the bottom end can be easily bent and opened 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 one end of the bottom of the pull rod 10. A group of locking grooves matching the locking block 11 are provided on the top of at least one of the pair of support plates 2, and a pressure plate 12 for driving the pull rod 10 to move up and down is provided on the handle 4.

[0037] A pull rod mounting groove is provided on the rear side of the guide rod 1, and the pull rod 10 is located in the pull rod mounting groove. A pressure plate mounting groove is provided on the handle 4. 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. The top end of the pull rod 10 is hinged to one end of the pressure plate 12.

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

[0039] The locking block 11 is used to fix the angle of the opening plate 2 after it is opened. Under the default condition, the locking block 11 is in a locked state for the pair of opening plates 2. The pressing plate 12 is a lever structure. When the pair of opening plates 2 need to be opened, one end of the pressing plate 12 is pressed down, and the other end of the pressing plate 12 is tilted. At this time, the pull rod 10 and the locking block 11 move upward for a distance, that is, the locking block 11 moves out of the locking groove, and the pair of opening plates 2 can be rotated and opened. After completion, the pressing plate 12 is released. Under the action of the torsion spring, the pull rod 10 and the locking block 11 are reset to the locking position, and the locking block 11 is again inserted into the locking groove to limit the position of the pair of opening plates 2 and prevent them from resetting and closing.

[0040] Furthermore, communication connecting tubes 18 connecting to the corresponding camera 17 and the handle 4 are integrally formed on both sides of the opening of the guide rod 1. The communication wires of the camera 17 are installed in the communication connecting tube 18. A flushing pipe 19 is provided on the inner side of the communication connecting tube 18 on one side, and a water outlet 20 connected to the flushing pipe 19 is provided on the inner side of the V-shaped connecting part 5.

[0041] In this case, the communication connecting tube 18 is integrally formed with the guide rod 1, that is, the communication connecting tube 18 is curled backward from the side of the guide rod 1 into a cylindrical shape, so that the two side edges of the guide rod 1 have a smooth arc-shaped structure, and the locking hook of the limit ring 8 is an arc-shaped hook head that matches the cylindrical structure. When the limit ring 8 is opened, it only needs to push the hook head end outward.

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

[0043] Furthermore, an introduction hole is provided on the introduction head 6. After the operation hole is opened on the body before the operation, a set of step-by-step expansion guide rods 25 are used to open the hole on the lumbar spine for positioning. The introduction hole of the introduction head 6 is inserted into the operation area along the expansion guide rod 25, and then the expansion guide rod 25 is withdrawn, and the expansion plate 2 is pressed continuously, so that a pair of expansion plates 2 are deformed and expanded by force, and the introduction hole can quickly guide the expansion plate 2 to accurately enter the target operation position.

Claims

1. A semi-open subcutaneous expansion endoscope, characterized in that The invention comprises a guide rod (1) and a pair of spread plates (2), wherein a handle (4) is provided at the top end of the guide rod (1), a V-shaped connecting portion (5) is provided at the bottom end of the guide rod (1), the bottom ends of the pair of spread plates (2) are fixedly connected via an introduction head (6), and the top ends of the pair of spread plates (2) are symmetrically hinged on both sides of the V-shaped connecting portion (5); and cameras (17) for forming 3D images are provided on both sides of the V-shaped connecting portion (5).

2. A semi-open subcutaneous distraction endoscope according to claim 1, characterized in that One side of the guide rod (1) is open, and a pair of openable and closable limiting rings (8) are provided at the upper portion of the open side. The V-shaped connecting portion (5) and the guide rod (1) are integrally formed.

3. A semi-open subcutaneous distraction endoscope according to claim 2, characterized in that The opening angle of the V-shaped connecting portion (5) is not less than 90°.

4. A semi-open subcutaneous distraction endoscope according to claim 2, characterized in that The four corners of the upper and lower ends of the V-shaped connecting portion (5) are all rounded.

5. A semi-open subcutaneous distraction endoscope according to claim 2, characterized in that Communication connection pipes (18) connected to the corresponding camera (17) and the handle (4) are integrally formed on both sides of the opening of the guide rod (1), and the communication wires of the camera (17) are installed in the communication connection pipe (18). A flushing pipe (19) is provided on the inner side of the communication connection pipe (18) located on one side, and a water outlet (20) connected to the flushing pipe (19) is provided on the inner side of the V-shaped connection part (5).

6. A semi-open subcutaneous distraction endoscope according to claim 1, characterized in that The support plate (2) is an elastic metal plate, the width of the support plate (2) gradually narrows from top to bottom, and the thickness of the support plate (2) gradually decreases from top to bottom.

7. A semi-open subcutaneous distraction 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 one end of the bottom of the pull rod (10). A group of locking grooves matching the locking block (11) are provided on the top of at least one of the pair of support plates (2), and a pressure plate (12) for driving the pull rod (10) to move up and down is provided on the handle (4).

8. A semi-open subcutaneous distraction endoscope according to claim 7, characterized in that A pull rod installation groove is provided on the rear side of the guide rod (1), the pull rod (10) is located in the pull rod installation groove, a pressure plate installation groove is provided on the handle (4), the pressure plate (12) is hinged in the pressure plate installation groove via a rotating shaft, and a torsion spring for controlling the pressure plate (12) to return to its original position 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).

9. A semi-open subcutaneous distraction endoscope according to claim 7, characterized in that One end of the top of the support plate (2) is hinged to the V-shaped connection portion (5) via a connecting shaft. The top end of the support plate (2) is a disc structure coaxial with the connecting shaft. A group of locking grooves are arranged in an annular array on the inner side of the disc structure.

10. The semi-open subcutaneous distraction endoscope according to claim 1, characterized in that The introduction head (6) is provided with an introduction hole.

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