A posterior spinal dilation channel assembly and methods of use thereof

Abstract

The present application relates to the technical field of spinal posterior expansion, in particular to a kind of spinal posterior expansion channel assembly and its using method, its technical scheme is: including depth gauge and guiding insertion device, the guiding insertion device includes angle adjusting assembly, buffer damper and locking clamp;The angle adjusting assembly includes connecting seat, the connecting seat top surface is fixedly installed with rotating seat, the rotating seat is rotatably installed with U-shaped rod;The buffer damper includes adjusting base, and the adjusting base top surface is provided with air output adjusting mechanism;The locking clamp includes top support, and the top support lower part is installed with hand support, the beneficial effects of the present application are: by rotating U-shaped rod, the insertion angle is adjusted, the air output adjusting mechanism is adjusted, the downward pressure is adjusted, then hand holds depth gauge and places hand on hand support and presses down, makes depth gauge uniform speed and inserts downwards, reaches the effect of assisting doctor accurate control insertion angle, makes insertion keep uniform speed, avoids damage caused by too fast insertion.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of posterior spinal dilation, in particular to a posterior spinal dilation channel assembly and a method for using the same. BACKGROUND

[0002] The posterior spinal dilation channel assembly is a medical instrument used in spinal surgery, mainly used to reduce the damage to the surrounding tissues during surgery, and to provide a good view and operating space. It is commonly used in spinal surgery, such as discectomy, spinal fixation or other spinal correction surgery. Figure 2 and Figure 17 As shown, the posterior spinal dilation channel assembly is composed of a dilation channel, a step-by-step distraction sleeve (optional), a positioning needle, a positioning plate, and a depth gauge. The method for using the same is to first determine the incision position using the positioning needle and the positioning plate. After the incision is made by the surgeon, the depth gauge is manually inserted, then the step-by-step distraction sleeve is inserted to gradually expand, and finally the dilation channel is inserted and the distraction sleeve is removed to establish a working channel.

[0003] Currently, the insertion of the depth gauge in spinal surgery usually relies on the experience of the surgeon and image-guided techniques (such as C-arm X-ray, CT, etc.). It depends on the operating precision of the surgeon and the real-time image. Although image-guided techniques can provide real-time feedback, manual operation still largely depends on the experience of the surgeon. Small hand tremors may result in insufficient accuracy of the insertion angle and depth of the depth gauge, and manual operation makes it difficult to perform uniform insertion movements. When inserting instruments such as depth gauges and distraction sleeves, the following problems may occur:

[0004] 1. Too fast insertion may exert excessive pressure on the soft tissues or nerve structures around the incision, increasing the risk of postoperative complications, which may cause bleeding, infection or nerve damage;

[0005] 2. Non-uniform insertion speed may cause the angle of the depth gauge to change during insertion, causing the position to shift, which may affect the accuracy of the positioning of the target structure, making subsequent surgical steps difficult;

[0006] 3. If uneven force is applied during insertion, it may cause the depth gauge to break or bend, requiring reinsertion, prolonging the operation time and increasing the risk to the patient;

[0007] Therefore, it is necessary to invent a posterior spinal dilation channel assembly and a method for using the same. SUMMARY

[0008] In order to achieve the above object, the present application provides the following technical scheme: a posterior spinal dilated channel assembly and its using method, comprising a positioning plate, a positioning needle, a depth gauge, a step-by-step dilated sleeve, a dilated channel and a guiding insertion device, the guiding insertion device comprises an angle adjusting assembly, a buffer damper and a locking clamp;

[0009] The angle adjusting assembly comprises a connecting seat, the connecting seat can be installed on the positioning plate, a rotating seat is fixedly installed on the top surface of the connecting seat, a U-shaped rod is rotatably installed on the rotating seat, connecting columns are installed on the top surfaces of both ends of the U-shaped rod, and a limiting mechanism is arranged on one side of the U-shaped rod.

[0010] The buffer damper comprises an adjusting base, the adjusting base is installed on the top surface of the connecting column, a damping sleeve is installed on the top surface of the adjusting base, a piston is installed in the damping sleeve, a pressing rod is installed on the top surface of the piston, damping air holes are arranged around the bottom of the damping sleeve, and an air outlet amount adjusting mechanism is arranged on the top surface of the adjusting base.

[0011] The locking clamp comprises a top support, the top support is installed on the upper end of the pressing rod, a clamping mechanism is installed on the upper part of the top support, a hand support is installed on the lower part of the top support, and a pressure sensor and a terminal controller are installed on the hand support.

[0012] Preferably, two connecting seats are installed on the positioning plate, convex columns are arranged at both ends of the U-shaped rod, the convex columns at both ends of the U-shaped rod are rotatably connected with rotating seats on the two connecting seats respectively, first elastic clamping rings are installed on the outer walls of the convex columns at both ends of the U-shaped rod, first elastic clamping pieces are installed on the inner walls of the rotating seats, and elastic protrusions meshing with the first elastic clamping pieces are arranged on the inner walls of the first elastic clamping rings.

[0013] Preferably, the limiting mechanism comprises a sleeve, the sleeve is installed on one of the rotating seats, a sliding block is slidably installed in the sleeve, a locking plug is installed on the end of the sliding block close to the rotating seat, a pull ring is installed on the other end of the sliding block, a locking slot is arranged on the convex column at one end of the U-shaped rod, an adjusting knob is installed on the other end of the U-shaped rod, and the locking plug can be inserted into the locking slot.

[0014] Preferably, the air outlet amount adjusting mechanism comprises an adjusting ring, the adjusting ring is sleeved on the outside of the lower end of the damping sleeve, a second elastic clamping ring is installed on the bottom of the adjusting ring, the second elastic clamping ring is embedded in the top surface of the adjusting base, the second elastic clamping ring is rotatably installed on the adjusting base, second elastic clamping pieces are arranged on the inner walls of the grooves embedded in the top surface of the adjusting base, and elastic protrusions meshing with the second elastic clamping pieces are arranged on the outer walls of the second elastic clamping rings.

[0015] Preferably, a spring is installed inside the damping sleeve, the upper end of the spring is connected to the bottom of the piston, a limit protrusion is provided on the outer wall of the bottom of the damping sleeve, a sealing block is installed on the inner wall of the adjusting ring, the sealing block is in close contact with the outer wall of the damping sleeve, and the sealing block can close the damping air hole.

[0016] Preferably, the clamping mechanism includes a top plate, with connecting rods installed around the top plate. The sides of the connecting rods are connected to the top support, and a bottom plate is installed at the lower end of the connecting rods. An opening extending to the center is provided on one side of the bottom plate.

[0017] Preferably, a motor is installed on the top surface of the top plate, the motor is electrically connected to the terminal controller, the lower output end of the motor passes through the top plate and is fixedly connected to the turntable, the top surface of the turntable is provided with three guide grooves, and the side of the turntable is provided with three slots.

[0018] Preferably, three locking blocks are provided between the turntable and the base plate. A rotating rod is inserted into the locking block. The lower end of the rotating rod is rotatably connected to the base plate, and the upper end of the rotating rod passes through the guide groove and is rotatably connected to the top plate. A card plate is provided on the outer side of the top surface of the locking block, and the card plate is inserted upward into the card slot.

[0019] Preferably, the three locking blocks are provided with anti-slip texture on the side where they are close to each other, the upper end of the side where the three locking blocks are close to each other protrudes outward, and the lower end of the side where the three locking blocks are close to each other tapers inward.

[0020] The method of using the above-described posterior spinal expansion channel assembly includes S1-S5;

[0021] S1. Open the product packaging, take out the positioning plate, attach it to the surgical site, fix the positioning plate with positioning pins, determine the incision position with positioning pins through fluoroscopy equipment, and then install the rotating seat on the positioning plate according to the incision position using positioning pins.

[0022] S2. Determine the insertion angle of the depth gauge using the perspective device, rotate the adjustment knob to adjust the U-shaped rod to a specified angle, then push the slider to drive the locking plug into the locking slot to lock the U-shaped rod, and then rotate the adjustment rings on both sides to drive the sealing block to open part of the damping air hole to adjust and control the downward pressure resistance.

[0023] S3. Use a scalpel to make an incision, then take the depth gauge, place your hand on the hand rest, press down with your hand to trigger the pressure sensor, the terminal controller receives the electrical signal generated by the pressure sensor and controls the start motor, the motor drives the turntable to rotate, the turntable drives each locking block to retract inward and clamp the depth gauge through the slot and the locking plate, hold the depth gauge and press down on the hand rest, at the same time the pressing rod drives the piston to compress the air in the damping sleeve downward and provide upward resistance, so that the depth gauge is inserted into the incision at a uniform speed;

[0024] S4, then repeat the method in the above steps, gradually expand the sleeve step by step, and then measure the depth when the largest diameter of the required step-by-step expansion sleeve is placed, select the appropriate size of the expansion channel according to the measured depth, if necessary, the expansion channel can be installed with a holding handle, the expansion channel is placed from the outermost side of the step-by-step expansion sleeve, then the depth ruler and the step-by-step expansion sleeve are taken out, the dilator is inserted from the top of the expansion channel to the bottom for dilatation, if the expansion channel without dilatation is selected, the expansion channel is taken out directly after the operation is completed.

[0025] S5, after the operation is completed, the dilator is inserted from the top of the expansion channel to the bottom in the reverse direction to dilate the semicircular sleeve, so that the expansion channel returns to the non-expanded state, and then taken out, if the expansion channel without dilatation is selected, the expansion channel is taken out directly after the operation is completed.

[0026] The beneficial effects of the present application are: the connecting seat is installed on the positioning plate, the insertion angle is adjusted by rotating the U-shaped rod and triggering the limiting mechanism, the down pressure resistance is controlled by rotating the air volume adjusting mechanism, then the depth ruler is held and placed on the hand rest, the pressure sensor is triggered to start the clamping mechanism to clamp the upper end of the depth ruler, the piston compresses the air in the damping sleeve downward and provides upward resistance during the down pressure process, so that the depth ruler is inserted downward at a uniform speed, then the step-by-step expansion sleeve and the expansion channel are inserted in turn to achieve the effect of assisting the doctor to accurately control the insertion angle and depth, and the insertion action can be kept uniform, avoiding too fast insertion to cause damage to soft tissue or nerve structure, or damage to the depth ruler and other tools, prolonging the service life of each component, improving the efficiency and safety of the posterior spinal expansion surgery. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The overall structure schematic diagram provided by the present application is provided;

[0028] Figure 2 The positioning plate and the positioning needle schematic diagram provided by the present application is provided;

[0029] Figure 3 The front view provided by the present application is provided;

[0030] Figure 4 The side view provided by the present application is provided;

[0031] Figure 5 The guide insertion device structure schematic diagram provided by the present application is provided;

[0032] Figure 6 The hand rest detail drawing provided by the present application is provided;

[0033] Figure 7 The angle adjusting assembly structure schematic diagram provided by the present application is provided;

[0034] Figure 8 The angle adjusting assembly provided by the present application is shown in a cross-sectional view.

[0035] Figure 9 The angle adjusting assembly provided by the present application is shown in an exploded view.

[0036] Figure 10 The U-shaped rod structure provided by the present application is shown in a schematic view.

[0037] Figure 11 The buffer damper structure provided by the present application is shown in a schematic view.

[0038] Figure 12 The buffer damper cross-sectional view provided by the present application is shown in a schematic view.

[0039] Figure 13 The buffer damper provided by the present application is shown in an exploded view.

[0040] Figure 14 The clamping mechanism structure provided by the present application is shown in a schematic view.

[0041] Figure 15 The clamping mechanism cross-sectional view provided by the present application is shown in a schematic view.

[0042] Figure 16 The clamping mechanism provided by the present application is shown in an exploded view.

[0043] Figure 17 The depth gauge, step-by-step expansion sleeve, and expansion channel 193 provided by the present application are shown in a schematic view.

[0044] In the figure: positioning plate 111, positioning needle 112, connecting seat 121, rotating seat 122, first elastic card 123, U-shaped rod 131, connecting column 132, first elastic clasp 133, adjusting knob 134, locking slot 135, sleeve 141, sliding block 142, locking plug 143, pull ring 144, adjusting base 151, second elastic card 152, second elastic clasp 153, adjusting ring 154, sealing block 155, damping sleeve 156, limiting protrusion 157, damping air hole 158, lower pressing rod 161, piston 162, spring 163, top bracket 171, hand rest 172, pressure sensor 173, connecting rod 181, top plate 182, bottom plate 183, motor 184, rotating disc 185, guide groove 186, clamping groove 187, locking block 188, rotating rod 189, clamping plate 190, depth gauge 191, step-by-step expansion sleeve 192, and expansion channel 193. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, which should be understood as merely illustrative and explanatory, and not as limiting the present application.

[0046] Embodiment 1, as shown in Figure 1 Figure 7 Figure 11 Figure 13 Figure 17 A posterior spinal dilated channel assembly in the first aspect embodiment of the present application, as shown in the drawings, comprises a positioning plate 111, a positioning needle 112, a depth gauge 191, a step-by-step dilated sleeve 192, a dilated channel 193 and a guide insertion device, the guide insertion device comprises an angle adjusting assembly, a buffer damper and a locking clamp;

[0047] The angle adjusting assembly comprises a connecting seat 121, the connecting seat 121 can be installed on the positioning plate 111, a rotating seat 122 is fixedly installed on the top surface of the connecting seat 121, a U-shaped rod 131 is rotatably installed on the rotating seat 122, connecting columns 132 are installed on the top surface of both ends of the U-shaped rod 131, and a limiting mechanism is arranged on one side of the U-shaped rod 131;

[0048] The buffer damper comprises an adjusting base 151, the adjusting base 151 is installed on the top surface of the connecting column 132, a damping sleeve 156 is installed on the top surface of the adjusting base 151, a piston 162 is installed in the damping sleeve 156, a pressing rod 161 is installed on the top surface of the piston 162, damping air holes 158 are arranged around the bottom of the damping sleeve 156, and an air outlet adjusting mechanism is arranged on the top surface of the adjusting base 151;

[0049] The locking clamp comprises a top support 171, the top support 171 is installed on the upper end of the pressing rod 161, a clamping mechanism is installed on the upper part of the top support 171, a hand support 172 is installed on the lower part of the top support 171, and a pressure sensor 173 and a terminal controller are installed on the hand support 172.

[0050] In the above embodiment, it should be noted that the materials of the dilated channel 193 and the step-by-step dilated sleeve 192 are medical POM, the dilated channel 193 and the step-by-step dilated sleeve 192 have multiple sizes, the material of the positioning needle 112 is medical stainless steel, the materials of the depth gauge 191 are medical POM and medical stainless steel, the depth gauge 191 and the step-by-step dilated sleeve 192 are provided with scale marks on the surfaces, the positioning plate 111 is made of medical silicone rubber and barium sulfate, the positioning plate 111 is provided with an opening for inserting the positioning needle 112, the positioning needle 112 and the depth gauge 191 are provided with protective caps on the tip parts, the protective caps are made of medical silicone rubber, and the positioning plate 111, the positioning needle 112, the depth gauge 191, the step-by-step dilated sleeve 192 and the dilated channel 193 are all sterile products for one-time use;

[0051] ​​​​The connector 121 is made of medical-grade stainless steel. The surface of the medical-grade stainless steel has an opening for inserting the positioning pin 112. The connector 121 also has a threaded hole for installing an auxiliary support frame. Because some people have a thick fat layer on their back, the stability of the connector 121 when installed on the positioning plate 111 is poor. The auxiliary support frame extends to both sides of the human body and is fixedly connected to the operating table to achieve the effect of stabilizing the connector 121.

[0052] The connecting seat 121 is installed on the positioning plate 111. The insertion angle is adjusted by rotating the U-shaped rod 131 and triggering the limiting mechanism. The downward pressure resistance is controlled by rotating the air volume adjustment mechanism. Then, the depth measuring rod 191 is held and the hand is placed on the hand support 172 and pressed up and down. At the same time, the pressure sensor 173 is triggered to activate the clamping mechanism to clamp the upper end of the depth measuring rod 191. During the downward pressing process, the pressing rod 161 drives the piston 162 to compress the air in the damping sleeve 156 and provide upward resistance, so that the depth measuring rod 191 is inserted downward at a uniform speed. Then, the operation is repeated to insert the step-by-step expansion sleeve 192 and expansion channel 193 in sequence, so as to assist the doctor in accurately controlling the insertion angle and depth, and to keep the insertion action at a uniform speed, avoiding damage to soft tissue or nerve structures caused by excessively rapid insertion, or damage to tools such as the depth measuring rod, extending the service life of each component, and improving the efficiency and safety of posterior spinal expansion surgery.

[0053] Example 2, as Figure 7 - Figure 10 As shown, a posterior spinal expansion channel assembly includes Embodiment 1. Furthermore, two connecting seats 121 are mounted on the positioning plate 111. A U-shaped rod 131 has protrusions at both ends, which are rotatably connected to rotating seats 122 on the two connecting seats 121. A first elastic retaining ring 133 is mounted on the outer wall of the protrusions at both ends of the U-shaped rod 131. A first elastic card 123 is mounted on the inner wall of the rotating seat 122. An elastic protrusion that engages with the first elastic card 123 is provided on the inner wall of the first elastic retaining ring 133. The limiting mechanism includes a sleeve 141, which is mounted on one of the rotating seats 122. A slider 142 is slidably mounted inside the sleeve 141. A locking plug 143 is mounted on one end of the slider 142 near the rotating seat 122, and a pull ring 144 is mounted on the other end. A locking slot 135 is provided on the protrusion at one end of the U-shaped rod 131, and an adjustment knob 134 is mounted on the other end. The locking plug 143 can be inserted into the locking slot 135.

[0054] In the above embodiments, it should be noted that the first elastic card 123 is an elastic spring. The first elastic card 123 is bent and installed on the inner wall of the turntable 122. The elastic protrusion on the inner wall of the first elastic ring 133 is also made of an elastic spring. When the first elastic ring 133 rotates, the elastic protrusion on the inner wall will press the first elastic card 123 to deform it. When the first elastic ring 133 stops rotating, the first elastic card 123 engages with the elastic protrusion to achieve the effect of controlling the rotation of the first elastic ring 133 and at the same time, the effect of limiting the rotation angle of the U-shaped rod 131 is achieved.

[0055] The surface of the adjustment knob 134 is provided with anti-slip protrusions, and the adjustment knob 134 is also provided with a pointer. The surface of the rotating base 122 near the adjustment knob 134 is provided with a scale. By adjusting the pointer on the knob 134 and the scale on the surface of the rotating base 122, the rotation angle of the U-shaped rod 131 can be intuitively known.

[0056] The locking slot 135 adopts a radial tip structure. The angle of each radial tip of the locking slot 135 corresponds to the limiting rotation angle of the first elastic retaining ring 133. That is to say, when the first elastic retaining ring 133 and the U-shaped rod 131 rotate to any angle, the locking slot 135 has a tip that points vertically upward, so that the locking plug 143 can be smoothly inserted. The protruding shape of the locking plug 143 is the same as the concave shape of the locking slot 135. The slider 142 is provided with grooves on both sides, and the inner wall of the sleeve 141 is provided with protrusions, so that the slider 142 can only slide horizontally along the protrusions on the inner wall of the sleeve 141. The slider 142 will not rotate on the inner wall of the sleeve 141. The pull ring 144 can help the user to pull out or push the locking plug 143 more conveniently. By pushing the locking plug 143 into the locking slot 135, the effect of locking the rotation angle of the U-shaped rod 131 is achieved.

[0057] Example 3, as Figure 11 - Figure 13 As shown, a posterior spinal expansion channel assembly includes Embodiment 1. Furthermore, the air volume adjustment mechanism includes an adjustment ring 154, which is sleeved on the outer side of the lower end of a damping sleeve 156. A second elastic retaining ring 153 is installed at the bottom of the adjustment ring 154, and the second elastic retaining ring 153 is embedded in the top surface of an adjustment base 151. The second elastic retaining ring 153 is rotatably mounted on the adjustment base 151. A second elastic card 152 is provided on the inner wall of the groove into which the top surface of the adjustment base 151 is embedded. An elastic protrusion that engages with the second elastic card 152 is provided on the outer wall of the second elastic retaining ring 153. A spring 163 is installed inside the damping sleeve 156, and the upper end of the spring 163 is connected to the bottom of a piston 162. A limit protrusion 157 is provided on the outer wall of the bottom of the damping sleeve 156. A sealing block 155 is installed on the inner wall of the adjustment ring 154, and the sealing block 155 is in close contact with the outer wall of the damping sleeve 156, capable of closing the damping air hole 158.

[0058] In the above embodiment, it should be noted that the second elastic card 152 is an elastic spring, and the second elastic card 152 is bent and installed in the inner wall of the adjusting base 151. The elastic protrusion of the outer wall of the second elastic snap ring 153 is also made of an elastic spring. When the second elastic snap ring 153 rotates, the elastic protrusion of the outer wall will press the second elastic card 152 to deform. When the rotation of the second elastic snap ring 153 is stopped, the second elastic card 152 engages with the elastic protrusion to achieve the effect of controlling the limited rotation of the second elastic snap ring 153, and at the same time, the effect of limiting the rotation angle of the limiting adjusting ring 154 is achieved.

[0059] The sealing block 155 is made of rubber material, and in the initial state, the sealing block 155 completely seals the damping air hole 158. By rotating the adjusting ring 154 to drive the sealing block 155 to open part of the damping air hole 158, the down pressure can be adjusted and controlled. The limiting protrusion 157 provided on the outer wall of the damping sleeve 156 blocks the rotation path of the sealing block 155 to achieve the effect of limiting the rotation angle of the limiting adjusting ring 154. The adjusting ring 154 is counterclockwise rotated to drive the sealing block 155 to the maximum deflection position. At this time, the damping air hole 158 is completely closed. The adjusting ring 154 is clockwise rotated to drive the sealing block 155 to the maximum deflection position. At this time, the damping air hole 158 is completely opened. The surface of the adjusting ring 154 is provided with anti-slip protrusions, and the adjusting ring 154 is also provided with a pointer. The surface of the adjusting base 151 is provided with a scale. The pointer on the adjusting ring 154 and the scale on the surface of the adjusting base 151 can achieve the effect of intuitively knowing the rotation angle of the adjusting ring 154.

[0060] The spring 163 is responsible for lifting the piston 162 to reset it. When the hand support 172 drives the top bracket 171 downward, the top bracket 171 drives the piston 162 downward to compress the air in the damping sleeve 156, and at the same time, the piston 162 compresses the spring. When the hand support 172 is released, the spring 163 lifts the piston 162 to reset it.

[0061] Embodiment 4, as Figure 14 - Figure 16As shown, a posterior spinal dilating channel assembly, including embodiment 1, in addition, the clamping mechanism includes a top plate 182, the top plate 182 is installed around the connecting rod 181, the connecting rod 181 side is connected with the top support 171, the connecting rod 181 lower end is installed with the bottom plate 183, the bottom plate 183 side is provided with an opening extending to the center, the top plate 182 top surface is installed with the motor 184, the motor 184 is electrically connected with the terminal controller, the motor 184 lower end output end penetrates the top plate 182 and is fixedly connected with the turntable 185, the turntable 185 top surface is provided with three guide grooves 186, the turntable 185 side edge is provided with three clamping grooves 187, the turntable 185 and the bottom plate 183 are provided with three locking blocks 188, the locking block 188 is inserted and installed with the rotating rod 189, the rotating rod 189 lower end is rotatably connected with the bottom plate 183, the rotating rod 189 upper end penetrates the guide groove 186 and is rotatably connected with the top plate 182, the locking block 188 top surface outside is provided with the clamping plate 190, the clamping plate 190 is inserted into the clamping groove 187 upward, the side of the three locking blocks 188 close to each other is provided with anti-skid lines, the side of the three locking blocks 188 close to each other upper end is outwardly convex, the side of the three locking blocks 188 close to each other lower end is inwardly contracted.

[0062] In the above embodiment, it should be noted that the locking block 188 is made of anti-skid rubber material, the motor 184 uses a stepping motor capable of providing accurate angle control, the number of steps and direction of rotation can be controlled by sending pulse signals; The terminal controller on the hand support 172 is installed at the bottom of the hand support 172, and the electronic elements carried in the terminal controller include:

[0063] (1) Microcontroller (MCU), responsible for receiving the signal of the pressure sensor, and controlling the rotation of the motor according to the set program;

[0064] (2) Stepping motor drive module, used to drive the stepping motor;

[0065] (3) Power module, providing stable power supply for the microcontroller, motor and other elements;

[0066] The pressure sensor 173 is used to monitor the applied pressure in real time, and sends a signal to the microcontroller when a specific pressure value is detected;

[0067] When the hand is placed on the hand support 172, the hand presses down to trigger the pressure sensor 173, the pressure sensor 173 sends a signal to the microcontroller, the microcontroller controls the motor 184 to start through the stepping motor drive module, the motor 184 drives the turntable 185 to rotate, the turntable 185 drives each locking block 188 to rotate inwardly and tighten through the cooperation of the clamping groove 187 and the clamping plate 190, so as to achieve the effect of clamping the depth gauge 191 or different sizes of the step-by-step expanding sleeve 192 and the expanding channel 193.

[0068] The method for using the spinal posterior expanding channel assembly is as follows: open the product package, take out the positioning plate 111, attach it to the surgical site, fix the positioning plate 111 with the positioning needle 112, determine the incision position with the positioning needle 112 through the perspective device, then install the rotating seat 122 on the positioning plate 111 according to the incision position using the positioning needle 112; determine the insertion angle of the depth gauge 191 through the perspective device, rotate the adjusting knob 134 to adjust the U-shaped rod 131 to deflect by a specified angle, then push the sliding block 142 to drive the locking plug 143 to insert into the locking slot 135 to lock the U-shaped rod 131, then rotate the adjusting rings 154 on both sides to drive the sealing blocks 155 to open part of the damping air holes 158 to adjust and control the downward pressure resistance; use a scalpel to cut the incision, then take the depth gauge 191, place the hand on the hand holder 172, press the hand to trigger the pressure sensor 173, the terminal controller receives the electric signal generated by the pressure sensor 173 and controls the start of the motor 184, the motor 184 drives the rotating disc 185 to rotate, the rotating disc 185 drives each locking block 188 to shrink inward and clamp the depth gauge 191 through the clamping groove 187 cooperating with the clamping plate 190, the hand holds the depth gauge 191 to press the hand holder 172 downward, and the downward pressing rod 161 drives the piston 162 to compress the air in the damping sleeve 156 downward and provide upward resistance, so that the depth gauge 191 is inserted into the incision at a constant speed; then repeat the method in the above steps, gradually expand using the step-by-step expanding sleeve 192, and measure the depth when the largest diameter step-by-step expanding sleeve 192 is placed, according to the measured depth, select the appropriate model and specification of the expanding channel 193, if necessary, the expanding channel 193 can be installed with a holding handle, the expanding channel 193 is placed from the outermost side of the step-by-step expanding sleeve 192, then the depth gauge 191 and the step-by-step expanding sleeve 192 are taken out, the distraction forceps are inserted from the top of the expanding channel 193 to the bottom for distraction, if the expanding channel without distraction is selected, the distraction forceps are not used, and thus the working channel is established; after the operation is completed, the distraction forceps are inserted from the top of the expanding channel 193 to the bottom in the opposite direction to distract the large semicircular sleeve, so that the expanding channel 193 returns to the non-expanding state, then it is taken out of the body, if the expanding channel without distraction is selected, it is directly taken out of the body after the operation is completed.

[0069] The above description is only the preferred embodiment of the present application, and any skilled person in the art can modify the present application according to the above description or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement according to the technical solution of the present application is within the scope of protection of the present application.

Claims

1. A posterior spinal expansion channel assembly, comprising a positioning plate (111), a positioning pin (112), a depth gauge (191), a progressive expansion sleeve (192), an expansion channel (193), and a guide insertion device, characterized in that: The guide insertion device includes an angle adjustment assembly, a buffer damper, and a locking clamp; The angle adjustment assembly includes a connecting seat (121), which can be installed on a positioning plate (111). A rotating seat (122) is fixedly installed on the top surface of the connecting seat (121). A U-shaped rod (131) is rotatably installed on the rotating seat (122). Connecting columns (132) are installed on the top surfaces of both ends of the U-shaped rod (131). A limit mechanism is provided on one side of the U-shaped rod (131). The buffer damper includes an adjusting base (151), which is installed on the top surface of the connecting column (132). A damping sleeve (156) is installed on the top surface of the adjusting base (151). A piston (162) is installed inside the damping sleeve (156). A pressing rod (161) is installed on the top surface of the piston (162). Damping air holes (158) are provided around the bottom of the damping sleeve (156). An air output adjustment mechanism is provided on the top surface of the adjusting base (151). The locking clamp includes a top bracket (171), which is mounted on the upper end of the lower pressure rod (161). A clamping mechanism is mounted on the upper part of the top bracket (171), and a hand rest (172) is mounted on the lower part of the top bracket (171). A pressure sensor (173) and a terminal controller are mounted on the hand rest (172). Place your hand on the hand rest (172), press down on your hand to trigger the pressure sensor (173), the terminal controller receives the electrical signal generated by the pressure sensor (173) and controls the start of the clamping mechanism to clamp the depth gauge (191), hold the depth gauge (191) and press down on the hand rest (172), at the same time the pressing rod (161) drives the piston (162) to compress the air in the damping sleeve (156) downward and provide upward resistance, so that the depth gauge (191) is inserted into the cut at a uniform speed.

2. The posterior spinal expansion channel assembly according to claim 1, characterized in that: Two connecting seats (121) are installed on the positioning plate (111). The U-shaped rod (131) has protrusions at both ends. The protrusions at both ends of the U-shaped rod (131) are rotatably connected to the rotating seats (122) on the two connecting seats (121). The outer wall of the protrusions at both ends of the U-shaped rod (131) is equipped with a first elastic retaining ring (133). The inner wall of the rotating seat (122) is equipped with a first elastic card (123). The inner wall of the first elastic retaining ring (133) is provided with an elastic protrusion that engages with the first elastic card (123).

3. The posterior spinal expansion channel assembly according to claim 2, characterized in that: The limiting mechanism includes a sleeve (141) which is mounted on one of the rotating seats (122). A slider (142) is slidably mounted inside the sleeve (141). A locking plug (143) is mounted on one end of the slider (142) near the rotating seat (122), and a pull ring (144) is mounted on the other end. A locking slot (135) is provided on the protrusion at one end of the U-shaped rod (131), and an adjustment knob (134) is mounted on the other end. The locking plug (143) can be inserted into the locking slot (135).

4. The posterior spinal expansion channel assembly according to claim 1, characterized in that: The air output adjustment mechanism includes an adjustment ring (154), which is sleeved on the outer side of the lower end of the damping sleeve (156). A second elastic retaining ring (153) is installed at the bottom of the adjustment ring (154). The second elastic retaining ring (153) is embedded in the top surface of the adjustment base (151). The second elastic retaining ring (153) is rotatably mounted on the adjustment base (151). A second elastic card (152) is provided on the inner wall of the groove into which the top surface of the adjustment base (151) is embedded. An elastic protrusion that engages with the second elastic card (152) is provided on the outer wall of the second elastic retaining ring (153).

5. The posterior spinal expansion channel assembly according to claim 4, characterized in that: A spring (163) is installed inside the damping sleeve (156). The upper end of the spring (163) is connected to the bottom of the piston (162). A limit protrusion (157) is provided on the outer wall of the bottom of the damping sleeve (156). A sealing block (155) is installed on the inner wall of the adjusting ring (154). The sealing block (155) is in close contact with the outer wall of the damping sleeve (156). The sealing block (155) can close the damping air hole (158).

6. The posterior spinal expansion channel assembly according to claim 1, characterized in that: The clamping mechanism includes a top plate (182), around which connecting rods (181) are installed. The side of the connecting rods (181) is connected to the top bracket (171). A bottom plate (183) is installed at the lower end of the connecting rods (181), and an opening extending to the center is provided on one side of the bottom plate (183).

7. A posterior spinal expansion channel assembly according to claim 6, characterized in that: A motor (184) is installed on the top surface of the top plate (182). The motor (184) is electrically connected to the terminal controller. The lower output end of the motor (184) passes through the top plate (182) and is fixedly connected to the turntable (185). The top surface of the turntable (185) is provided with three guide grooves (186), and the side of the turntable (185) is provided with three slots (187).

8. A posterior spinal expansion channel assembly according to claim 7, characterized in that: Three locking blocks (188) are provided between the turntable (185) and the base plate (183). A rotating rod (189) is inserted into the locking block (188). The lower end of the rotating rod (189) is rotatably connected to the base plate (183). The upper end of the rotating rod (189) passes through the guide groove (186) and is rotatably connected to the top plate (182). A card plate (190) is provided on the outer side of the top surface of the locking block (188). The card plate (190) is inserted upward into the card slot (187).

9. A posterior spinal expansion channel assembly according to claim 8, characterized in that: The three locking blocks (188) are provided with anti-slip texture on the side that is close to each other. The upper end of the side that is close to each other of the three locking blocks (188) protrudes outward, and the lower end of the side that is close to each other of the three locking blocks (188) retracts inward.

Images