Visual drainage tube capable of preventing duramater from being damaged for spine endoscope

Abstract

A drainage cavity is formed in a tube body in the axial direction of the tube body, the far end of the drainage cavity is arranged to be a closed end, the near end of the drainage cavity is connected with a negative pressure drainage device, and communicated axial drainage grooves are formed in the positions, corresponding to the drainage cavity, of the side walls of the two sides of the tube body; a visual cavity and a light source cavity are arranged in the drainage cavity, a lens is arranged in the visual cavity, light-guide fibers are arranged in the light source cavity, the lens and the light-guide fibers are respectively connected to an imaging control system, a plurality of air bags are arranged on the end face of the far end of the catheter body, each air bag is connected with an inflation cavity, and the near end of each inflation cavity is connected with an inflation device. The tube body further comprises two shifting piece containing cavities, and a shifting piece is arranged in each shifting piece containing cavity. Compared with the prior art, the intervertebral part can be plugged through expansion of the air bag, the reliable plugging effect is achieved, the visualization function is achieved, whether bleeding points exist in an operation area or not and whether continuous cerebrospinal fluid leakage exists or not can be determined, and definite indications are provided for timely extubation and timely extubation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a spinal endoscope-guided drainage tube that prevents dural rupture. Background Technology

[0002] In the past three years, spinal endoscopic surgery has seen explosive growth, gradually replacing traditional open fixation surgery as the mainstream procedure. Postoperative placement of a drainage tube can effectively drain blood, prevent swelling and accumulation of blood in the surgical cavity, and avoid clinical symptoms similar to recurrence caused by nerve root irritation.

[0003] However, spinal endoscopic surgery carries increased risks compared to open surgery, with a higher incidence of intraoperative dural rupture and greater difficulty in endoscopic repair. Currently effective repair methods include direct-vision endoscopic suturing, sealing membrane adhesion, and pressure packing with tight sutures of the fascia layer; in severe cases, conversion to open surgery may be necessary. However, after endoscopic repair, it is difficult to confirm the tightness of the repair, leading to a series of clinical challenges: clinicians often advise patients to remain in bed and delay ambulation; most doctors choose not to place a drainage tube after dural rupture because drainage tubes cannot control the amount of cerebrospinal fluid drained, potentially increasing the risk of incomplete dural closure. Therefore, clinical practice often employs expectant management after closure, allowing the dura mater to heal spontaneously. However, this approach carries risks of persistent cerebrospinal fluid leakage, subcutaneous hematoma formation, and increased infection risk postoperatively.

[0004] Patent CN223126952U discloses a visual drainage tube, which includes a tube body with an air bladder at the end face of the tube body and an inflation channel inside. However, in this patent, the air bladder expands into a trumpet shape after inflation, mainly used to create space on the outside of the end of the tube body, so as to form a gap between the end of the drainage tube and the tissue organs, providing operating space for the endoscope. Its air bladder design cannot achieve the function of sealing the interlaminar foramen.

[0005] Therefore, there is an urgent clinical need for a drainage tube that combines excellent occlusion effect with visualization function to break through the current treatment dilemma. Summary of the Invention

[0006] The purpose of this invention is to provide a spinal endoscopic visual drainage tube that prevents dural rupture. The drainage tube can seal the interlaminar region by inflating a balloon, providing a reliable sealing effect and visualization.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] An endoscopically visualized drainage tube for preventing dural rupture includes a tube body, comprising a distal end placed inside the body and a proximal end placed outside the body. The tube body has a drainage cavity, a visualization cavity, and a light source cavity arranged along its axial direction.

[0009] The drainage cavity is closed at the distal end of the tube body, and a negative pressure drainage device is connected to the proximal end of the tube body. Axial drainage grooves are formed on both side walls of the tube body corresponding to the drainage cavity. The axial drainage grooves are connected to the drainage cavity and located close to the distal end of the tube body. The viewing cavity and the light source cavity are located inside the drainage cavity. A lens is provided in the viewing cavity, and an optical fiber is provided in the light source cavity. The ends of the lens and the optical fiber located near the proximal end of the tube body are respectively connected to the imaging control system.

[0010] The distal end face of the tube is provided with multiple air bladders, each air bladder is connected to an inflation chamber, and the inflation chamber is connected to an inflation device at the proximal end of the tube.

[0011] Preferably, the axial length of the tube is 60-80cm, the opening of the axial drainage groove near the far end of the tube is 3-5mm away from the far end of the tube, and the axial length of the axial drainage groove is set to 2-3cm.

[0012] Preferably, the closed end is located in the central region of the distal cross-section of the tube.

[0013] Preferably, the tube body further includes two paddle receiving cavities, which are symmetrically distributed on both sides of the drainage cavity.

[0014] More preferably, the cross-sections of the two paddle receiving cavities are perpendicular to the cross-section of the drainage cavity, and each paddle receiving cavity is provided with a paddle, one end of which has a bent portion.

[0015] More preferably, the paddle is a metal paddle.

[0016] More preferably, one end of the paddle receiving cavity located at the distal end of the tube body is designated as the first paddle receiving cavity opening, and the other end is designated as the second paddle receiving cavity opening, with the second paddle receiving cavity opening located on the side wall of the tube body.

[0017] More preferably, the opening of the second paddle receiving cavity is located 8-10 cm from the far end on the side wall of the tube body, and the opening of the second paddle receiving cavity is provided with a thin film.

[0018] In this invention, when the drainage tube is placed inside the body and drainage is being performed, the opening of the second paddle receiving cavity is exposed outside the body.

[0019] More preferably, the closed end of the drainage cavity and the opening of the first paddle receiving cavity divide the distal end of the tube body into four airbag receiving cavities, and four airbags are provided, which are respectively located in the four airbag receiving cavities.

[0020] More preferably, the drainage cavity, the visual cavity, the light source cavity, and the paddle receiving cavity are all independently provided and are not connected to each other.

[0021] Preferably, the proximal end of the pipe body is provided with a pipe receiving cavity along its axial outward extension direction.

[0022] Preferably, the inflation chamber of the plurality of airbags is located at one end of the pipe near the pipe and is connected to the inflation device via an inflation connecting pipe.

[0023] More preferably, the inflation connection pipe includes an inflation connection main pipe and a plurality of inflation connection branch pipes connected thereto. The inflation connection main pipe passes through the pipe receiving cavity and is connected to the inflation device. The plurality of inflation connection branch pipes are respectively connected to the inflation cavities of the plurality of airbags.

[0024] More preferably, a one-way valve is provided on the main inflation connection pipe, and the inflation device includes an inflation hand pump.

[0025] Preferably, the end of the drainage cavity located near the pipe is connected to the negative pressure drainage device via a drainage pipe.

[0026] More preferably, the drainage pipe includes a main drainage pipe and two branch drainage pipes connected thereto. The main drainage pipe passes through the pipe receiving cavity and is connected to the negative pressure drainage device. The two branch drainage pipes are respectively connected to the proximal end of the drainage cavity and to positions located on both sides of the visible cavity and the light source cavity.

[0027] More preferably, the negative pressure drainage device includes a negative pressure drainage ball.

[0028] Preferably, the imaging control system includes a monitor and a light source, the viewing cavity and the light source cavity both extend through the pipe receiving cavity, the optical fiber is connected to the light source, the lens is made of soft lens material, and the lens is connected to the monitor.

[0029] More preferably, the axial length of the viewing cavity and the light source cavity is 120-150cm.

[0030] More preferably, the lens is a flexible fiber lens.

[0031] The drainage tube provided by this invention can be placed in the interlaminar foramen area after spinal endoscopy, and the interlaminar area is sealed by balloon inflation to achieve a reliable sealing effect. At the same time, the drainage cavity and axial drainage groove can drain any accumulated fluid or blood that may occur during the sealing process. Finally, based on a visualization device (lens, optical fiber, imaging control system), this invention can clearly identify whether there are bleeding points in the surgical area and whether there is continuous cerebrospinal fluid leakage, providing clear indications for timely and appropriate tube removal, reducing the risk of dura mater failure to close, continuous cerebrospinal fluid leakage leading to subcutaneous hematoma and infection, thereby preventing dura mater rupture in patients.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The present invention provides a spinal endoscope-guided drainage tube for preventing dura mater rupture. The drainage tube is provided with a drainage cavity, a visual cavity, and a light source cavity. The visual cavity is provided with a lens, the light source cavity is provided with optical fibers, and the distal end face of the tube is provided with an airbag. The present invention can seal the interlaminar area by expanding the airbag, which has a reliable sealing effect and a visualization function.

[0034] (2) The tube end of the present invention is provided with multiple airbags. After being inflated by the inflation device, the airbags expand and can tightly seal the interlaminar area, thereby accurately achieving the purpose of sealing.

[0035] (3) The tube body of the present invention is provided with a drainage cavity inside and an axial drainage groove on the side wall of the tube body. The drainage cavity is connected to a negative pressure drainage device. During drainage, the distal end of the drainage tube is inserted into the body and the negative pressure drainage device is operated. Under the action of negative pressure, blood and fluid accumulation enter the drainage cavity through the axial drainage groove, which improves the drainage efficiency and can better avoid problems such as blood accumulation and swelling in the surgical area.

[0036] (4) The tube body of this invention also includes a viewing cavity with a built-in lens, a light source cavity with a built-in optical fiber, and the lens is connected to a monitor near the tube body, while the optical fiber is connected to the light source. Through the above design, this invention can utilize the external light source connected to the optical fiber to provide sufficient illumination for the drainage tube lumen. Combined with the lens and monitor to collect images of the surgical area, it can clearly identify whether there are bleeding points or persistent cerebrospinal fluid leakage in the surgical area, providing accurate basis for medical staff to determine the timing of tube removal.

[0037] (5) The tube body of the present invention is also provided with a pick receiving cavity, and a pick is installed in the cavity. The direction of the drainage tube can be flexibly adjusted by the pick, thereby improving the sealing effect, drainage effect and visualization effect of the airbag, making the use of the whole device more flexible and efficient. Attached Figure Description

[0038] Figure 1 This is an overall structural diagram of the present invention;

[0039] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0040] Figure 3 This is a schematic diagram of the distal end structure of the tube body of the present invention;

[0041] Figure 4 This is a schematic diagram of the proximal end structure of the tube body of the present invention;

[0042] In the diagram: 1-tube body; 2-drainage cavity; 21-closed end; 3-visible cavity; 4-light source cavity; 5-negative pressure drainage device; 6-axial drainage groove; 7-imaging control system; 8-airbag; 81-inflation cavity; 9-paddle receiving cavity; 91-first paddle receiving cavity opening; 92-second paddle receiving cavity opening; 10-paddle; 11-airbag receiving cavity; 12-pipe receiving cavity; 13-inflation connecting pipe; 14-drainage pipe; Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0044] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 this invention based on the specific circumstances.

[0046] Unless otherwise specified, the functional components or structures in the following embodiments or examples are conventional components or structures used in the art to achieve the corresponding functions.

[0047] Example 1

[0048] A spinal endoscopic drainage tube for preventing dural rupture includes a tube body 1, with the distal end of the tube body 1 inserted into the body and the proximal end remaining outside the body. The tube body 1 has a drainage cavity 2, a visual cavity 3, and a light source cavity 4 arranged axially inside.

[0049] Drainage cavity 2: Its distal end face is a closed end 21, which is located in the central region of the distal section of the tube body 1. Its proximal end is connected to the negative pressure drainage device 5. The side walls on both sides of the tube body 1 are provided with axial drainage grooves 6 near the distal end, which are connected to the drainage cavity 2.

[0050] Visual cavity 3 and light source cavity 4: The two are adjacent to each other and located inside the drainage cavity 2. The visual cavity 3 has a built-in lens, and the light source cavity 4 has a built-in optical fiber. The proximal ends of both are connected to the imaging control system 7.

[0051] Multiple airbags 8 are arranged on the distal end face of the tube 1, and each airbag 8 is connected to the inflation device located at the proximal end through an inflation chamber 81.

[0052] Example 2

[0053] An endoscopically visualized drainage tube that prevents dural rupture, such as... Figure 1 , 4 As shown, it includes a tube body 1, with the distal end of the tube body 1 inserted into the body and the proximal end remaining outside the body. The proximal end of the tube body 1 is provided with a tube receiving cavity 12 extending outward along its axial direction.

[0054] like Figure 3 As shown, a drainage cavity 2 is arranged axially inside the tube body 1. The distal end face of the drainage cavity 2 is a closed end 21, which is located in the central region of the distal cross-section of the tube body 1. Axial drainage grooves 6 are formed on both side walls of the tube body 1 near the distal end, and these axial drainage grooves communicate with the drainage cavity 2. The proximal end of the drainage cavity 2 is connected to the negative pressure drainage device 5 through a drainage pipe 14. Specifically, the drainage pipe 14 includes a main drainage pipe and two drainage branch pipes connected to it. The main drainage pipe passes through the pipe receiving cavity 12 and is connected to the negative pressure drainage device 5. The two drainage branch pipes are respectively connected to the positions on both sides of the proximal end of the drainage cavity 2. In this embodiment, the negative pressure drainage device 5 is a negative pressure drainage ball.

[0055] The drainage cavity 2 is provided with an adjacent viewing cavity 3 and a light source cavity 4. The proximal ends of the viewing cavity 3 and the light source cavity 4 both penetrate the pipe receiving cavity 12. The viewing cavity 3 has a built-in lens made of soft lens material, which is connected to the monitor in the imaging control system 7 for collecting images. The light source cavity 4 has a built-in optical fiber, which is connected to the light source in the imaging control system 7 for illuminating the drainage cavity 2.

[0056] like Figure 2As shown, the tube body 1 also has two symmetrically distributed paddle receiving cavities 9 on both sides of the drainage cavity 2. The cross-sections of these two paddle receiving cavities 9 are perpendicular to the cross-section of the drainage cavity 2. Each paddle receiving cavity 9 contains a paddle 10, one end of which has a bent portion. In this embodiment, the paddle receiving cavity 9 located at the distal end of the tube body 1 is designated as a first paddle receiving cavity opening 91, and the other end is designated as a second paddle receiving cavity opening 92. The second paddle receiving cavity opening 92 is opened on the side wall of the tube body 1. One end of the paddle 10 can exit from the first paddle receiving cavity opening 91, and the other bent portion can exit from the second paddle receiving cavity opening 92. The paddle 10 can be used to adjust the position of the drainage tube.

[0057] In this embodiment, the opening 92 of the second paddle receiving cavity is located externally.

[0058] The distal end of the tube 1 is provided with four airbags 8. The closed end 21 of the drainage cavity 2 and the opening 91 of the first paddle receiving cavity divide the distal end of the tube 1 into four airbag receiving cavities 11, and the four airbags 8 are respectively disposed in the four airbag receiving cavities 11. Each airbag 8 is connected to an inflation cavity 81. The end of the inflation cavity 81 located near the proximal end of the tube 1 is connected to an inflation device through an inflation connecting pipe 13. In this embodiment, the inflation connecting pipe 13 includes an inflation connecting main pipe and four inflation connecting branch pipes connected thereto. The inflation connecting main pipe passes through the pipe receiving cavity 12 and is connected to the inflation device. The four inflation connecting branch pipes are respectively connected to the inflation cavities 81 of the four airbags 8. A one-way valve is provided on the inflation connecting main pipe. In this embodiment, the inflation device is an inflation hand pump.

[0059] This embodiment includes the following steps during use:

[0060] (1) Insert the distal end of the drainage tube into the body to the surgical area, adjust the position of the drainage tube by using the lever 10, and inflate the airbag 8 by using the inflation device until it completely seals the interlaminar area.

[0061] (2) By operating the negative pressure drainage device 5, the accumulated fluid and blood generated in the surgical area are introduced into the drainage cavity 2 through the axial drainage groove 6. After drainage, the end of the main drainage pipe can be replaced with a drainage bag to collect the drainage fluid.

[0062] (3) By connecting an external light source through optical fiber to provide sufficient illumination to the drainage tube, and then using a lens and monitor to collect images of the surgical area, it is possible to clearly identify whether there are bleeding points in the surgical area and whether there is continuous cerebrospinal fluid leakage, providing a basis for medical staff to judge the timing of tube removal.

[0063] (4) During the drainage process, if the drainage tube is displaced, its position can be adjusted in real time using the lever 10.

[0064] This embodiment, through the above design, can drain the accumulated fluid and blood while sealing the tube. Through the visualization settings, it can more accurately determine whether there is continuous fluid or blood leakage, so that medical staff can remove the tube in a timely manner, reducing the risk of the dura mater failing to close, continuous leakage of cerebrospinal fluid leading to subcutaneous hematoma and infection, thereby preventing damage to the patient's dura mater.

[0065] Example 3

[0066] An endoscopically visualized drainage tube for preventing dural rupture, based on Example 2,

[0067] In this embodiment, the axial length of the tube body 1 is 60-80cm, the opening of the axial drainage groove 6 near the far end of the tube body 1 is 3-5mm away from the far end of the tube body 1, and the axial length of the axial drainage groove 6 is set to 2-3cm.

[0068] In this embodiment, the second paddle receiving cavity opening 92 is located 8-10 cm from the far end on the side wall of the tube body 1, and the second paddle receiving cavity opening 92 is provided with a thin film.

[0069] In this embodiment, the axial length of the visible cavity 3 and the light source cavity 4 is 120-150cm.

[0070] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A spinal endoscopic drainage tube designed to prevent dural rupture, characterized in that, The tube (1) includes a distal end placed inside the body and a proximal end placed outside the body. The tube (1) has a drainage cavity (2), a viewing cavity (3), and a light source cavity (4) arranged along its axial direction. The end of the drainage cavity (2) located at the far end of the tube body (1) is set as a closed end (21). The end of the drainage cavity (2) located at the near end of the tube body (1) is connected to a negative pressure drainage device (5). The two side walls of the tube body (1) are provided with axial drainage grooves (6) corresponding to the position of the drainage cavity (2). The axial drainage grooves (6) are connected to the drainage cavity (2) and are located near the far end of the tube body (1). The visible cavity (3) and the light source cavity (4) are located inside the drainage cavity (2). The visible cavity (3) is provided with a lens, and the light source cavity (4) is provided with an optical fiber. The ends of the lens and the optical fiber located at the near end of the tube body (1) are respectively connected to the imaging control system (7). The distal end face of the tube (1) is provided with multiple airbags (8), each airbag (8) is connected to an axially arranged inflation chamber (81), and the end of the inflation chamber (81) located near the tube (1) is connected to an inflation device.

2. The spinal endoscopic drainage tube for preventing dural rupture according to claim 1, characterized in that, The axial length of the tube (1) is 60-80cm, the opening of the axial drainage groove (6) near the far end of the tube (1) is 3-5mm away from the far end of the tube (1), and the axial length of the axial drainage groove (6) is set to 2-3cm.

3. The spinal endoscopic drainage tube for preventing dural rupture according to claim 1, characterized in that, The tube body (1) also includes two paddle receiving cavities (9), which are symmetrically distributed on both sides of the drainage cavity (2). The cross-section of the two paddle receiving cavities (9) is perpendicular to the cross-section of the drainage cavity (2). Each paddle receiving cavity (9) is provided with a paddle (10), and one end of the paddle (10) has a bent portion.

4. The spinal endoscopic drainage tube for preventing dural rupture according to claim 3, characterized in that, The paddle receiving cavity (9) is located at one end of the tube body (1) and is provided as the first paddle receiving cavity opening (91), and the other end is provided as the second paddle receiving cavity opening (92). The second paddle receiving cavity opening (92) is provided on the side wall of the tube body (1).

5. A spinal endoscopic drainage tube for preventing dural rupture according to claim 4, characterized in that, The second paddle receiving cavity opening (92) is located 8-10 cm from the far end of the side wall of the tube body (1), and the second paddle receiving cavity opening (92) is provided with a thin film.

6. The spinal endoscopic drainage tube for preventing dural rupture according to claim 4, characterized in that, The closed end (21) of the drainage cavity (2) and the opening (91) of the first paddle receiving cavity separate the distal end of the tube body (1) to form four airbag receiving cavities (11). There are four airbags (8), which are respectively set in the four airbag receiving cavities (11).

7. The spinal endoscopic drainage tube for preventing dural rupture according to claim 1, characterized in that, The pipe body (1) has a pipe receiving cavity (12) at its proximal end along its axial outward extension direction.

8. A spinal endoscopic drainage tube for preventing dural rupture according to claim 7, characterized in that, The inflation chamber (81) of the plurality of airbags (8) is located at one end near the tube body (1) and connected to the inflation device via an inflation connecting pipe (13). The inflation connecting pipe (13) includes an inflation connecting main pipe and a plurality of inflation connecting branch pipes connected thereto. The inflation connecting main pipe passes through the pipe receiving cavity (12) and is connected to the inflation device. The plurality of inflation connecting branch pipes are respectively connected to the inflation chamber (81) of the plurality of airbags (8). A one-way valve is provided on the inflation connecting main pipe. The inflation device includes an inflation hand pump.

9. A spinal endoscopic drainage tube for preventing dural rupture according to claim 7, characterized in that, The drainage cavity (2) is located at one end near the tube body (1) and is connected to the negative pressure drainage device (5) via a drainage pipe (14). The drainage pipe (14) includes a main drainage pipe and two branch drainage pipes connected thereto. The main drainage pipe passes through the pipe receiving cavity (12) and is connected to the negative pressure drainage device (5). The two branch drainage pipes are respectively connected to the proximal end of the drainage cavity (2) and to the positions on both sides of the visible cavity (3) and the light source cavity (4). The negative pressure drainage device (5) includes a negative pressure drainage ball.

10. A spinal endoscopic drainage tube for preventing dural rupture according to claim 7, characterized in that, The imaging control system (7) includes a monitor and a light source. The viewing cavity (3) and the light source cavity (4) both pass through the pipe receiving cavity (12). The optical fiber is connected to the light source. The lens is made of soft lens material and is connected to the monitor.

Images