Novel intervertebral foramen mirror

Abstract

The invention relates to the technical field of medical instruments, and particularly discloses a novel intervertebral foramen mirror which comprises a mirror table, and a cavity is formed in the middle of the mirror table; the mirror tube is arranged at the bottom of the mirror table; the liquid pipeline joints are distributed on the outer side of the endoscope tube, and a liquid flowing pipeline communicated with the liquid pipeline joints is arranged in the endoscope tube; the eyepiece is arranged on the outer side of the telescope tube, a focusing knob is arranged on the outer side of the eyepiece, and a lamp post is arranged in the telescope tube; the cold light source interface is arranged on the outer side of the mirror tube and is in contact with the lamp post; and the camera pipeline joint is arranged on the outer side of the mirror tube. In the using process of the novel intervertebral foramen mirror, the problems that in the prior art, due to the fact that the vertical holding angle of a foramen mirror is fixed, operation fatigue is likely to be caused, the water pressure risk is uncontrollable, shielded blood vessels, nerve roots and bony structures cannot be well distinguished, and the accidental injury risk is high in the operation can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a novel intervertebral foramen mirror. BACKGROUND

[0002] As a core means of minimally invasive surgery of the spine, the intervertebral foramen mirror technology has undergone iterations from YESS technology (1997) to TESSYS technology (2003) since it was proposed by German doctor Kambin in the 1990s, and has gradually realized the breakthrough from indirect decompression to direct nerve root release. Although the existing intervertebral foramen mirror instrument has obvious advantages in minimally invasive surgery (incision of only 0.6-0.8 cm), safety of local anesthesia and postoperative recovery speed (24 hours out of bed), it still has the following defects: Firstly, the current mainstream intervertebral foramen mirror adopts a pistol-type handle structure, which is convenient to operate in a lateral approach surgery, but when applied to a lumbar posterior interlaminar approach, the operator needs to hold the instrument vertically and maintain a specific angle for a long time, which easily leads to operational fatigue and decreased stability, affecting the accuracy of the surgery.

[0003] Secondly, the water pressure risk is uncontrollable: the surgery relies on physiological saline infusion to maintain a clear view, but high water pressure may compress the nerve root, and the existing instrument lacks a real-time water pressure monitoring and alarm system, and the experience-based control has the risk of nerve damage.

[0004] Thirdly, there is a blind area in identifying tissue structure: the traditional optical lens cannot penetrate deep tissue and cannot distinguish between blocked blood vessels, nerve roots and bone structures, so the risk of intraoperative injury is high. SUMMARY

[0005] The purpose of the present application is to provide a novel intervertebral foramen mirror to solve the problems of fixed vertical holding angle of the existing intervertebral foramen mirror, uncontrollable water pressure risk and high risk of intraoperative injury due to the inability to distinguish between blocked blood vessels, nerve roots and bone structures.

[0006] To achieve the above purpose, the present application provides the following technical solution: a novel intervertebral foramen mirror, comprising: a mirror table, a cavity is formed in the middle of the mirror table; a mirror tube provided at the bottom of the mirror table; a liquid pipe joint distributed on the outside of the mirror tube, the inside of the mirror tube is provided with a liquid flow pipe in communication with the liquid pipe joint; an eyepiece provided on the outside of the mirror tube, a focusing knob is provided on the outside of the eyepiece, and a lamp post is provided in the inside of the mirror tube; a cold light source interface provided on the outside of the mirror tube and in contact with the lamp post; The camera pipe joint is arranged outside the mirror tube, and the inside of the mirror tube is provided with a camera moving channel connected with the camera pipe joint; The water pressure measuring assembly is arranged in the middle part of the mirror table and the mirror tube. The water pressure measuring assembly comprises indicator lamps arranged in an array on the top of the mirror table, a control circuit board and a battery arranged in the middle part of the cavity, and a plurality of groups of water pressure sensors arranged in an array on the inner wall of the liquid flow pipe.

[0007] In one embodiment of the present application, the bottom of the mirror tube is provided with a bevel structure.

[0008] In one embodiment of the present application, the new intervertebral foramen mirror further comprises: The instrument channel is arranged in the middle part of the mirror table and penetrates the middle part of the mirror table and the mirror tube.

[0009] In one embodiment of the present application, the new intervertebral foramen mirror further comprises: The gripping handle is arranged on both sides of the mirror table and is connected with the mirror table through threads.

[0010] In one embodiment of the present application, the gripping handle is connected with the mirror table through buckles.

[0011] In one embodiment of the present application, the gripping handle is connected with the mirror table through magnetic attraction.

[0012] In one embodiment of the present application, the bottom of the mirror table is provided with two groups of ultrasonic sensing modules arranged near both sides of the lamp column, and the ultrasonic sensing modules are connected with the control circuit board through wires.

[0013] In one embodiment of the present application, the inside of the mirror table is provided with a power supply channel for placing the wires, and the power supply channel is connected with the cavity in the mirror table.

[0014] Compared with the prior art, the new intervertebral foramen mirror has the following advantages: By setting the grip handle, water pressure measuring assembly and power channel, the problems of the existing mainstream intervertebral foramen mirror adopting a pistol-shaped handle structure, when applied to the lumbar posterior interlaminar approach, the operator needs to hold the instrument vertically and maintain a specific angle for a long time, which easily leads to operation fatigue and stability decline, affecting the precision of the operation; water pressure risk is uncontrollable: the operation relies on physiological saline infusion to maintain clear vision, but high water pressure may compress the nerve root, the existing instrument lacks real-time water pressure monitoring and alarm system, and there are hidden dangers of nerve damage in experience control; tissue structure identification blind area: traditional optical lens is difficult to penetrate deep tissue, and cannot distinguish blocked blood vessels, nerve roots and bone structures, and the risk of intraoperative injury is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a new intervertebral foramen mirror provided by an embodiment of the present application; Figure 2 is another view of Figure 1 ; Figure 3 is a partial enlarged structural schematic diagram of Figure 2 ; Figure 4 is a side view of Figure 1 ; Figure 5 is a partial side cross-sectional structural schematic diagram of A-A in Figure 4 ; Figure 6 is a partial side cross-sectional structural schematic diagram of B-B in Figure 4 ; Figure 7 is a partial side cross-sectional view of Figure 1 .

[0016] In the figure: 1, mirror table; 2, mirror tube; 3, liquid pipeline joint; 31, liquid flow pipeline; 4, ocular lens; 41, focusing knob; 42, lamp column; 5, cold light source interface; 6, camera pipeline joint; 61, camera moving channel; 7, instrument channel; 8, water pressure measuring assembly; 81, indicator light; 82, control circuit board; 83, battery; 84, water pressure sensor; 9, grip handle; 10, ultrasonic sensing module; 11, power channel. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0018] EMBODIMENT Please refer to Figures 1-7 The application provides a technical solution: a new intervertebral foramen mirror, comprising: a mirror table 1, a cavity is formed in the middle of the mirror table 1; a mirror tube 2 arranged at the bottom of the mirror table 1; liquid pipeline joints 3 distributed on the outer side of the mirror tube 2, the inside of the mirror tube 2 is provided with liquid flow pipelines 31 in communication with the liquid pipeline joints 3; an ocular lens 4 arranged on the outer side of the mirror tube 2, the outer side of the ocular lens 4 is provided with a focusing knob 41, and the inside of the mirror tube 2 is provided with a lamp column 42; The application further comprises a cold light source interface 5 arranged on the outer side of the mirror tube 2 and in contact with the lamp column 42; a camera pipeline joint 6 arranged on the outer side of the mirror tube 2, the inside of the mirror tube 2 is provided with a camera moving channel 61 in communication with the camera pipeline joint 6; a water pressure measuring assembly 8 arranged in the middle of the mirror table 1 and the mirror tube 2; the water pressure measuring assembly 8 comprises indicator lights 81 arranged in an array on the top of the mirror table 1, a control circuit board 82 and a battery 83 arranged in the middle of the cavity, and a plurality of groups of water pressure sensors 84 arranged in an array on the inner wall of the liquid flow pipelines 31; According to the accompanying Figure 1 As shown in the figure, the liquid pipeline joints 3 are symmetrically distributed on both sides of the mirror tube 2, the ocular lens 4 and the cold light source interface 5 are located in the same plane, the light source can be transmitted to the bottom of the lamp column 42, and the light source can be observed through the ocular lens 4, and the focusing knob 41 can be focused to refine the picture and facilitate the observation of the picture of the puncture position. According to the accompanying Figure 3 As shown in the figure, the liquid flow pipelines 31 are symmetrically distributed, one side is used for water injection and the other side is used for water pumping, physiological saline can be poured into the operation position of the patient to maintain the clarity of the field of view of the ocular lens 4, and the water pressure sensors 84 are used to detect the water pressure in the two groups of liquid flow pipelines 31, so as to feedback to the control circuit board 82, and the indicator lights 81 are lit when the water pressure is too high, at this time, the red light of the indicator lights 81 is lit, so as to remind the medical staff that the water pressure is too high and may cause the phenomenon of compression of the nerve root, and the water pressure is reduced in time, so as to solve the problem that the existing instruments lack a real-time water pressure monitoring and alarm system.

[0019] With the above technical scheme, through the setting of the grip handle 9, the water pressure measuring assembly 8 and the power channel 11, the problems that in the prior art, when the intervertebral foramen mirror is applied to the lumbar posterior interlaminar approach, the operator needs to hold the instrument vertically and maintain a specific angle for a long time, which easily leads to operation fatigue and stability decline, affects the operation precision, the water pressure risk is uncontrollable, the operation relies on physiological saline infusion to maintain clear vision, but high water pressure may compress the nerve root, the prior art instrument lacks a real-time water pressure monitoring and alarm system, and there is a risk of nerve damage in experience control, and the tissue structure recognition blind area exists, the traditional optical lens is difficult to penetrate deep tissue, and it is difficult to distinguish the blocked blood vessels, nerve roots and bone structures, and the risk of intraoperative injury is high.

[0020] The specific operation steps of the intervertebral foramen mirror are as follows: Firstly, under the guidance of perspective, a 18G puncture needle is punctured to the target point of the intervertebral foramen through the "safe triangular area" (the space between the nerve root and the exit nerve root), and the error is controlled within millimeters; along the guide needle, the soft tissue is expanded step by step, and a working sleeve with a diameter of 7-8mm is placed to establish a minimally invasive operation channel directly to the intervertebral disc herniation; Secondly, the mirror tube 2 is introduced through the sleeve, the cold light source interface 5 is connected to the cold light source and the high-definition camera device, the operation field is magnified by 30 times and transmitted to the display screen in real time, the nerve root, the dural sac and the herniated nucleus pulposus are clearly developed; Then, the camera head with multi-angle rotation is inserted through the camera head pipe joint 6, the camera head moves into the bottom of the mirror tube 2 through the camera head moving channel 61, the angle can be rotated, the distal end can be oscillated, the lens (used to observe the dead angle of the field of view that cannot be observed by the conventional intervertebral foramen mirror) is ensured to have a clear field of view during operation; Among them, during the insertion of the mirror tube 2, through the installation of the power channel 11, the following mechanism can be realized for real-time identification of intraoperative tissue: (1) Sound wave emission and reception: the ultrasonic transducer (frequency 7.5-10MHz) emits short pulse sound waves to penetrate the tissue, and the reflected waves are generated at different acoustic impedance interfaces (such as nerves, blood vessels and bones); the wave signal is converted into an electrical signal by a piezoelectric crystal and transmitted to an external processing host.

[0021] (2) Signal analysis and imaging: the host eliminates depth attenuation interference through time gain compensation (TGC) circuit, adopts phased array beam forming technology to synthesize high-resolution cross-sectional images, and dynamically displays the spatial position relationship of the nerve root (low echo), the blood vessel (no echo pulsation) and the bone structure (strong echo with acoustic shadow).

[0022] (3) Multi-modal fusion guidance: Endoscopic optical field and ultrasound image are displayed synchronously in overlay mode (picture-in-picture mode), and the operator can adjust the instrument path in real time according to the ultrasound image when the visual field is blurred due to bleeding or adhesion, thereby avoiding the risk of nerve damage; Then, the nucleus pulposus forceps is used to clamp the protruding intervertebral disc tissue along the instrument channel 7; meanwhile, the two sets of liquid pipe joints 3 are connected with the external liquid supply system, and physiological saline is poured into the ocular lens 4 to maintain the clarity of the visual field, and the water pressure in the two sets of liquid flow pipes 31 is detected through the water pressure sensor 84, and then feedback to the control circuit board 82. If it is too high, the indicator light 81 is turned on, and at this time, the red light of the indicator light 81 is turned on, so as to remind the medical staff that the water pressure is too high, which may cause the phenomenon of compressing the nerve root, and the water pressure is reduced in time, thereby solving the problem that the existing instrument lacks real-time water pressure monitoring and alarm system. Finally, the electrode head is inserted through the instrument channel 7 to ablate the residual nucleus pulposus and coagulate to stop bleeding; the hyperplastic osteophytes are removed, and the radiofrequency energy is used to close the annulus fibrosus crack.

[0023] It should be noted that the control circuit board 82 is internally provided with a wireless transmission module, which is integrated with the control circuit board 82: a micro control circuit board (size ≤ 15mm×10mm) is embedded in the intervertebral foramen mirror handle, a 5.8GHz millimeter wave wireless transmission module is integrated, and H.265 encoding compression ultrasound and endoscopic image data are supported. Low-latency transmission: Through MIMO multi-antenna design, the image transmission delay is less than 50ms, which meets the real-time operation requirement (compared with the traditional wired scheme, the risk of cable entanglement is reduced).

[0024] A control button is arranged at the upper end of the mirror table 1, and the operator can switch the ultrasound / optical picture by one key. The external display screen synchronously receives the picture-in-picture fusion image.

[0025] In the implementation of the present example, it also includes: a gripping handle 9 arranged on both sides of the mirror table 1, and the gripping handle 9 is connected with the mirror table 1 through threads; the gripping handle 9 is connected with the mirror table 1 through buckles; the gripping handle 9 is connected with the mirror table 1 through magnetic attraction. Any one of the above installation methods can be used to install the gripping handle 9, and the gripping handle 9 is made of medical-grade polycarbonate by injection molding, and the whole is abandoned after operation to avoid cross infection. During the molding process of the gripping handle 9, a plurality of models are provided to adapt to the palm size of Asian adults, and the surface is additionally provided with anti-skid corrugations and a thumb groove to reduce slipping during operation.

[0026] In this example, the grip handle 9 is connected to the stage 1 by a snap-lock. During the procedure, the surgeon with a 78mm hand width uses an M-type handle to wirelessly transmit images to a wall-mounted display screen, with no cables obstructing the surgical field. After the nucleus pulposus is removed, the snap-lock is pressed to discard the handle.

[0027] In an optional embodiment, the mirror stand 1 has a power channel 11 for placing wires inside, and the power channel 11 is connected to the cavity inside the mirror stand 1, so that the wires connecting the ultrasonic sensing module 10 and the control circuit board 82 can be placed. The ultrasound sensing module 10 can transmit data to the control circuit board 82 in real time, and then feed it back to the external display screen to provide feedback on the patient's internal detection information. This allows the ultrasound to penetrate deep tissues, better distinguish obscured blood vessels, nerve roots and bone structures, and solve the problem of high risk of accidental injury during surgery.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel percutaneous endoscopic discectomy, characterized in that: include: A mirror stand (1) has a cavity in the middle. The mirror tube (2) is set at the bottom of the mirror stage (1); Liquid pipe joints (3) are distributed on the outside of the mirror tube (2), and liquid flow pipes (31) connected to the liquid pipe joints (3) are provided inside the mirror tube (2). An eyepiece (4) is set on the outside of the lens tube (2), and a focusing knob (41) is set on the outside of the eyepiece (4). A lamp post (42) is set inside the lens tube (2). A cold light source interface (5) is located on the outside of the lens tube (2) and in contact with the lamp post (42). A camera pipe connector (6) is provided on the outside of the lens tube (2), and a camera moving channel (61) is provided inside the lens tube (2) and connected to the camera pipe connector (6). A water pressure measuring component (8) is installed in the middle of the mirror stage (1) and the mirror tube (2); The water pressure measuring component (8) includes an array of indicator lights (81) mounted on the top of the mirror stage (1), a control circuit board (82) and a battery (83) mounted in the middle of the cavity, and an array of multiple water pressure sensors (84) mounted on the inner wall of the liquid flow pipe (31).

2. The novel percutaneous endoscopic discectomy (PED) according to claim 1, characterized in that: The bottom of the mirror tube (2) has a slanted opening structure.

3. The novel percutaneous endoscopic discectomy (PED) according to claim 1, characterized in that: Also includes: An instrument channel (7) is provided in the middle of the mirror stage (1), and the instrument channel (7) passes through the middle of the mirror stage (1) and the mirror tube (2).

4. The novel percutaneous endoscopic discectomy (PED) according to claim 1, characterized in that: Also includes: Grip handles (9) are provided on both sides of the mirror stand (1), and the grip handles (9) are connected to the mirror stand (1) by threads.

5. A novel percutaneous endoscopic discectomy (PED) according to claim 4, characterized in that: The grip handle (9) is connected to the mirror stand (1) by a snap fastener.

6. A novel percutaneous endoscopic discectomy (PED) according to claim 4, characterized in that: The grip handle (9) is magnetically connected to the mirror stand (1).

7. A novel percutaneous endoscopic discectomy (PED) according to claim 1, characterized in that: Two sets of ultrasonic sensing modules (10) are installed on the bottom of the mirror stand (1) near the lamp post (42) on both sides, and the ultrasonic sensing modules (10) are connected to the control circuit board (82) by wires.

8. A novel percutaneous endoscopic discectomy unit according to claim 7, characterized in that: The mirror stand (1) has a power channel (11) for placing wires inside, and the power channel (11) is connected to the cavity inside the mirror stand (1).

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