Maxillary sinus membrane stent gun and maxillary sinus membrane repair method

Abstract

The application relates to the technical field of medical equipment, in particular to a maxillary sinus membrane tacking gun and a maxillary sinus membrane repairing method. The membrane tacking gun comprises a holding rod, a tacking mechanism and a firing mechanism connected to the holding rod, the firing mechanism comprises a sliding rod arranged in the tacking mechanism, a first spring connected to the sliding rod, and a firing needle for firing a membrane tacking needle; a pull rod is slidably arranged in the holding rod, the pull rod is connected to the sliding rod, and a second spring is sleeved on the pull rod; a control assembly is arranged on the holding rod, the control assembly comprises a snap button, the pull rod passes through the snap button and is slidably connected to the snap button, an installation plate is arranged on the pull rod, a positioning plate is arranged on the installation plate, a movable rod is slidably arranged on the holding rod, a stop block is arranged on the movable rod, a fifth spring is connected to the movable rod, one end of the fifth spring away from the movable rod is connected to the holding rod, a jacking post is arranged on the movable rod, and a pressing rod for moving the jacking post is arranged on the snap button. The application has the effect of improving the flexibility of the maxillary sinus membrane tacking gun during use.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of medical equipment, in particular to a maxillary sinus membrane nail gun and a maxillary sinus membrane repairing method. BACKGROUND

[0002] When the maxillary posterior teeth are lost, the bottom wall of the maxillary sinus will drop to the position of the original tooth root of the lost tooth. At this time, if implantation is performed, the maxillary sinus wall may be penetrated. In order to implant the implant, it is often necessary to transplant some synthetic bone substitutes to lift them to the original position, so as to ensure that the implant is in the maxillary bone. This surgical procedure is called maxillary sinus lifting.

[0003] In the maxillary sinus lifting and other related surgeries, the sinus membrane often needs to be repaired, and the membrane nail gun is an important tool for fixing collagen membrane and other materials. The utility model patent with the publication number CN218186980U discloses a novel membrane nail gun, which comprises a handle, one end of the head end of the handle is detachably connected with a front end rod, the tail end of the handle is provided with a tail pull handle, the other end of the front end rod is connected with a nail grabber mouth, the end of the nail grabber mouth away from the front end rod is provided with a nail grabbing groove, a firing structure is arranged between the interiors of the handle, the front end rod and the nail grabber mouth, the firing structure and the tail pull handle are connected with each other, a compression spring is arranged between the firing structure and the inner wall of the handle, and a firing safety structure is arranged on the handle. The working principle is that the compression rod of the firing mechanism is directly clamped by the firing knob, the firing safety block is rotated to lock the firing knob, and the unlocking and locking of the firing knob are realized by rotating the firing safety block during use. This operation mode cannot realize the clamping of the compression rod and the anti-misfire action by the firing knob alone, the operation convenience needs to be improved, the compression rod is prone to wear with the firing knob when the compression rod is directly clamped by the firing knob and the compression rod is separated from the firing knob by pressing the firing knob, the compression rod is prone to jam when the compression rod falls into the firing knob, the mobility and flexibility of the compression rod are insufficient, and the surgical effect is affected. SUMMARY

[0004] In order to improve the flexibility of the maxillary sinus membrane nail gun during use, the application provides a maxillary sinus membrane nail gun.

[0005] The application provides a maxillary sinus membrane nail gun, which adopts the following technical scheme:

[0006] The maxillary sinus membrane nail gun comprises a handle, a nail grabbing mechanism and a trigger mechanism for controlling the emission of the membrane nail, the trigger mechanism comprises a slide rod arranged in the nail grabbing mechanism, the slide rod is connected with a first spring, the first spring is connected with a firing needle for firing the membrane nail, a pull rod is slidingly installed in the handle, the pull rod is connected with the slide rod, the diameter of the slide rod is smaller than the diameter of the pull rod, the pull rod is sleeved with a second spring, a control assembly for controlling the movement of the pull rod is installed on the handle, the control assembly comprises a button, the button is slidingly installed on the handle, the pull rod passes through the button and is slidingly connected with the button, a third spring is installed on the handle, one end of the third spring is connected with the button, an installation plate is installed on the pull rod, a positioning plate is installed on the installation plate, a movable rod is slidingly installed on the handle, a stopper for blocking the positioning plate is installed on the movable rod, a fifth spring is connected with the movable rod, one end of the fifth spring away from the movable rod is connected with the handle, a top column is installed on the movable rod, a pressing rod for pushing the top column to move is installed on the button.

[0007] By adopting the above technical scheme, the cooperation of the button, the pull rod, the spring and the firing needle realizes the controllability of the firing process of the membrane nail gun. When the button is pressed, the pressing rod pushes the top column to drive the movable rod to move, the blocking of the stopper to the positioning plate is released, at this time, the second spring resets to drive the pull rod and the slide rod to move, and the firing needle is fired under the action of the first spring. This design enables the operator to accurately control the firing time through the button, improving the convenience and accuracy of operation.

[0008] The movable rod and the stopper control the stop of the pull rod, the button blocks in front of the pull rod to form double locking of the pull rod, preventing the pull rod from moving due to external force, preventing accidental firing, and in the preparation stage of firing, the stopper is used to separately fix and control the pull rod, so that the pull rod is out of the control of the button, the movement of the pull rod and the button is separated, so that in the preparation stage, the button cannot trigger the firing action of the pull rod alone, enhancing the protection mechanism of the membrane nail gun, which is beneficial to enhance the safety and flexibility of the membrane nail gun in use.

[0009] In a specific embodiment, an installation groove is formed in the installation plate, a guide rod is installed on the installation plate, the guide rod is arranged in the installation groove, a movable plate is slidingly installed on the guide rod, a fourth spring is sleeved on the guide rod, one end of the fourth spring is connected with the movable plate, and the other end is connected with the installation plate, a push rod is hinged to the movable plate, the positioning plate is hinged to the installation plate, one end of the positioning plate away from the installation plate is hinged to the push rod, and a push button for pushing the movable plate to move is installed on the handle.

[0010] By adopting the above technical scheme, when the movable rod drives the stop block to move away from the positioning plate, the fourth spring pushes the movable plate to move, the movable plate drives the push rod to move to control the rotation of the positioning plate, the positioning plate moves to the side close to the mounting plate, the movement jam caused by the blocking of the positioning plate is avoided, the flexibility of the operation of the instrument is improved, the flexibility of the movement of the pull rod is optimized, the smooth firing process and the firing force of the pull rod are ensured, and the wear between the positioning plate and the stop block when the positioning plate moves away from the stop block is reduced, thereby enhancing the use performance of the nail gun.

[0011] In a specific embodiment, a moving buckle is slidably installed on the presser, a pressing rod is slidably installed on the moving buckle, a sixth spring is sleeved on the pressing rod, one end of the sixth spring is connected with the pressing rod, and the other end of the sixth spring is connected with the moving buckle.

[0012] By adopting the above technical scheme, the pressing rod must be aligned with the top column by pushing the moving buckle to press the pressing rod, so as to release the locking of the stop block and avoid the firing under the non-pre-set operation process, thereby ensuring the safety of the instrument during the operation process.

[0013] In a specific embodiment, a positioning step is arranged on the presser, and a step surface that abuts against the positioning step is formed in the handle rod.

[0014] By adopting the above technical scheme, the positioning step on the presser abuts against the handle rod, the presser is quickly positioned, the presser is ensured to stay at the specified position, the pull rod can be smoothly inserted into the presser during the firing of the pull rod, the friction and impact between the presser and the pull rod are avoided, and the firing force of the pull rod is affected.

[0015] In a specific embodiment, the nail grabbing mechanism comprises a connecting rod, the connecting rod is installed on the handle rod, a nail grabbing rod is connected to one end of the connecting rod away from the handle rod, a nail grabbing groove is formed in the nail grabbing rod, a sliding rod is slidably installed in the connecting rod, one end of the sliding rod away from the handle rod extends into the nail grabbing rod, the first spring is connected to one end of the sliding rod extending into the nail grabbing rod, the first spring is arranged in the nail grabbing rod, and the top needle is connected to one end of the first spring away from the sliding rod.

[0016] By adopting the above technical scheme, the sliding cooperation of the sliding rod in the connecting rod and the arrangement of the first spring and the top needle ensure the stability of the firing after the film nail is grabbed.

[0017] In a specific embodiment, the shape of the nail grabbing rod is a circular arc rod body, and the first spring can change shape along with the arc shape of the nail grabbing rod.

[0018] By adopting the technical scheme, the arc-shaped nail grabbing rod facilitates the vertical grabbing of the membrane nail by the operator, especially in the complex anatomical structure of the oral cavity, the arc shape can better fit the maxillary sinus lateral wall and other parts, and the accuracy and convenience of grabbing the membrane nail are improved. The first spring deforms along with the arc-shaped nail grabbing rod, which ensures the uniformity of the force when the membrane nail is fired at different angles.

[0019] In a specific embodiment, a threaded hole is formed in the handle, one end of the connecting rod is provided with an external thread, the connecting rod is detachably installed on the handle through the threaded hole, an internal thread is formed in the inner wall of the end of the connecting rod away from the handle, and the end of the connecting rod away from the handle is detachably connected with the nail grabbing rod through the internal thread.

[0020] By adopting the technical scheme, the threaded connection of the connecting rod and the nail grabbing rod enables the nail grabbing mechanism to be detachably replaced. When different shapes and sizes of membrane nails need to be fired, the nail grabbing rod can be quickly replaced to match the nail grabbing groove with the membrane nail, thereby enhancing the applicability of the membrane nail gun.

[0021] In a specific embodiment, the handle is a rod body with a larger diameter at both ends than at the middle position, and an anti-slip protruding rib is integrally formed on the handle.

[0022] By adopting the technical scheme, the handle with a larger diameter at both ends than at the middle position conforms to the ergonomic design and provides a comfortable gripping feeling for the operator. The anti-slip protruding rib increases the friction between the handle and the palm, avoids the sliding of the handle due to hand sweating during the operation, and improves the stability and safety of the operation, which is particularly important in the delicate maxillary sinus repair surgery.

[0023] A maxillary sinus membrane repair surgery includes the following steps:

[0024] Step one: windowing and perforation exposure, incision and flap turning to expose the maxillary sinus lateral wall, an oval or rectangular bone window with a length of about 15-20 mm and a width of about 8-10 mm is prepared in the middle of the maxillary sinus lateral wall above the first and second maxillary molar apices using a ball drill or an ultrasonic bone cutter, and the bone window edge is smoothed;

[0025] Step two: collagen membrane pretreatment and medial fixation, a 30mm*40mm collagen membrane is trimmed to a suitable shape according to the maxillary sinus buccal-lingual width, and the collagen membrane is placed across the window inside and outside, 2 titanium nails with a length of 3mm are used to grab the membrane nail with a membrane nail gun, and the membrane nail is fired and fixed on the nasal bone wall through the medial wall bone surface, and is placed in the mesial and distal of the perforation area of the sinus membrane, to ensure complete coverage of the perforation area of the sinus membrane bottom, while leaving the maxillary sinus bottom wall area uncovered by the collagen membrane, so that the bone graft material can finally contact the bottom wall;

[0026] Step three: placement of bone augmentation material, fill the maxillary sinus with bone augmentation material along the window and compact it;

[0027] Step four: folding and fixing the collagen membrane on the lateral part of the maxillary sinus, fold the lateral collagen membrane towards the edge of the window, tightly wrap the bone augmentation material, form a cylindrical structure, and fix it on the lateral wall of the maxillary sinus or the top of the alveolar ridge with two titanium nails;

[0028] Step five: wound closure, irrigation of the surgical area, and reduction of the periosteal flap, which is sutured with 4-0 suture;

[0029] Step six: X-ray examination, postoperative CBCT examination to record the initial position and distribution state of the maxillary sinus bone augmentation material, and regular follow-up CBCT examination of the maxillary sinus.

[0030] By adopting the above technical solutions, the standardized steps from window exposure to wound closure, combined with the precise fixation of the collagen membrane by the membrane nail gun, ensure the standardization and operability of the surgical process; the preparation of a specific size bone window and the trimming of the edge during windowing are beneficial to the exposure of the surgical field and the placement of the collagen membrane; the internal and external fixation of the collagen membrane and the uniform filling of the bone augmentation material maintain the blood supply and stability of the bone graft material; regular postoperative CBCT examination can monitor the position and state of the bone augmentation material in real time, ensuring the long-term reliability of the surgical effect.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. The cooperation of the buckle, pull rod, spring and thimble components realizes the controllability of the firing process of the membrane nail gun. When the buckle is pressed, the pressure rod pushes the top column to move the movable rod, which removes the blockage of the movable rod to the positioning plate. At this time, the second spring resets the pull rod and the slide rod to move, and the thimble is fired under the action of the first spring. This design enables the operator to precisely control the firing time through the buckle, improving the convenience and accuracy of the operation.

[0033] The movable rod and the block control the stop of the pull rod, the buckle is blocked in front of the pull rod to form double locking of the pull rod, preventing the pull rod from moving due to external force, preventing accidental firing, and in the preparation stage, the block plate is used to separately fix and control the pull rod, so that the pull rod is out of the control of the buckle, and the movement of the pull rod and the buckle is separated, so that in the preparation stage, the buckle cannot trigger the firing action of the pull rod alone, enhancing the protection mechanism of the membrane nail gun, which is beneficial to enhancing the safety of the membrane nail gun in use. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a schematic diagram of the membrane nail gun of the embodiment of the present application.

[0035] Figure 2is a sectional view of the film nail gun of the embodiment of the present application.

[0036] Figure 3 is Figure 2 is an enlarged view of A in the middle.

[0037] Figure 4 is Figure 2 is an enlarged view of B in the middle.

[0038] Figure 5 is a schematic view of the press stud of the embodiment of the present application.

[0039] Figure 6 is a schematic view of the movable rod of the embodiment of the present application.

[0040] Figure 7 is a schematic view of the movable plate of the embodiment of the present application.

[0041] Figure 8 is a schematic view of the positioning plate of the embodiment of the present application.

[0042] Figure 9 is a schematic view of the position relationship when the pull rod of the embodiment of the present application is located below the press stud.

[0043] The reference signs: 1, handle; 11, convex rib; 12, threaded hole; 13, folding groove; 2, nail grabbing mechanism; 21, connecting rod; 22, nail grabbing rod; 221, nail grabbing groove; 3, firing mechanism; 31, sliding rod; 321, first positioning column; 322, first spring; 323, thimble; 324, second positioning column; 331, pull rod; 332, second spring; 333, pull buckle; 34, control assembly; 341, press stud; 3411, positioning step; 342, third spring; 351, mounting table; 352, mounting plate; 3521, mounting groove; 353, guide rod; 354, movable plate; 355, fourth spring; 356, positioning plate; 357, push rod; 358, push buckle; 361, movable rod; 362, stop block; 363, fifth spring; 364, jacking column; 365, moving buckle; 366, pressing rod; 367, sixth spring. DETAILED DESCRIPTION

[0044] The following will be described in combination with the accompanying Figures 1-9 The present application will be further described in detail.

[0045] The embodiment of the present application discloses a maxillary sinus film nail gun, referring to Figure 1 and Figure 2 , comprising a handle 1, a nail grabbing mechanism 2 for grabbing a film nail and a firing mechanism 3 for controlling the emission of the film nail are connected on the handle 1.

[0046] The handle 1 is a rod body with larger diameters at both ends and a smaller diameter at the middle position, and the handle 1 is integrally formed with anti-skid convex ribs 11.Figure 2 、 Figure 3 and Figure 4 One end of the handle 1 is provided with a threaded hole 12, the claw mechanism 2 comprises a connecting rod 21, an outer wall of one end of the connecting rod 21 is provided with an external thread, the connecting rod 21 is detachably installed on the handle 1 through the threaded hole 12 on the handle 1, an inner wall of an end of the connecting rod 21 away from the handle 1 is provided with an internal thread, and an end of the connecting rod 21 away from the handle 1 is detachably connected with a claw rod 22 through the thread, the claw rod 22 is in the shape of a circular arc rod body, and the claw rod 22 is provided with a claw groove 221 at an end away from the connecting rod 21.

[0047] When the film nail needs to be taken, the operator holds the handle 1, the handle 1 is made into a rod shape with thinner middle and thicker two ends, which can facilitate the operator to hold and provide comfortable holding feeling, and the anti-skid convex edges 11 can enhance the holding ability of the operator, so as to avoid the handle 1 from sliding in the palm of the operator in the case that the operator sweats or the palm is wet. The operator holds the handle 1 and aims the claw groove 221 on the claw rod 22 at the film nail to grasp the film nail, the claw rod 22 is in the shape of a circular arc rod body, which facilitates the operator to vertically grasp one end of the claw groove 221 when the film nail is grasped. The connecting rod 21 is detachably installed on the handle 1, and the claw rod 22 is detachably connected with the connecting rod 21, when different shapes and sizes of film nails need to be launched, the claw rod 22 can be replaced, so that the shape and size of the claw groove 221 on the claw rod 22 can correspond to the shape and size of the film nail, thereby enhancing the use performance of the film nail gun.

[0048] The trigger mechanism 3 comprises a sliding rod 31, the sliding rod 31 is slidingly installed in the connecting rod 21, one end of the sliding rod 31 extends into the claw rod 22 and is fixedly installed with a first positioning column 321, the claw rod 22 is slidingly installed with a thimble 323, the thimble 323 is arranged close to the claw groove 221, one end of the thimble 323 close to the sliding rod 31 is fixedly installed with a second positioning column 324, the first positioning column 321 and the second positioning column 324 are jointly sleeved with a first spring 322, one end of the first spring 322 is fixedly connected with the sliding rod 31, and the other end is fixedly installed with the thimble 323, in the embodiment, the first spring 322 can change shape along with the arc shape of the claw rod 22.

[0049] The handle 1 is slidingly installed with a pull rod 331, one end of the pull rod 331 close to the sliding rod 31 is fixedly connected with the sliding rod 31, the diameter of the pull rod 331 is greater than that of the sliding rod 31, the pull rod 331 is sleeved with a second spring 332, one end of the second spring 332 is fixedly connected with the pull rod 331, and the other end is fixedly connected with the handle 1, and one end of the pull rod 331 away from the sliding rod 31 is fixedly connected with a pull buckle 333.

[0050] Referring to Figure 4 and Figure 5The control assembly 34 is installed on the handle 1 and controls the activity of the pull rod 331. The control assembly 34 comprises a snap 341. The handle 1 is provided with a folding groove 13. The snap 341 is slidably installed on the handle 1 through the folding groove 13. The snap 341 is provided with a hole. The pull rod 331 and the slide rod 31 pass through the hole of the snap 341 and are slidably connected with the snap 341. The handle 1 is fixedly provided with a third spring 342. One end of the third spring 342 close to the snap 341 is fixedly connected with the snap 341. The snap 341 is provided with a positioning step 3411. The handle 1 is provided with a step surface abutting against the positioning step 3411.

[0051] With reference to Figure 6 , Figure 7 and Figure 8 , the pull rod 331 is fixedly provided with a mounting table 351. The mounting table 351 is fixedly provided with a mounting plate 352. The mounting plate 352 is provided with a mounting groove 3521. The mounting plate 352 is fixedly provided with a guide rod 353. The guide rod 353 is arranged in the mounting groove 3521. The guide rod 353 is slidably connected with a movable plate 354. The movable plate 354 is slidably connected with the mounting plate 352. The guide rod 353 is sleeved with a fourth spring 355. One end of the fourth spring 355 is fixedly connected with the movable plate 354. The other end of the fourth spring 355 is fixedly connected with the mounting plate 352. The mounting plate 352 is hingedly provided with a positioning plate 356. One end of the positioning plate 356 away from the mounting plate 352 is hingedly provided with a push rod 357. The push rod 357 is hingedly arranged on the movable plate 354. The handle 1 is fixedly provided with a push buckle 358 for moving the movable plate 354.

[0052] The handle 1 is slidably provided with a movable rod 361. The movable rod 361 is fixedly provided with a stop block 362 for stopping the positioning plate 356. The stop block 362 is arranged between the positioning plate 356 and the push buckle 358. The movable rod 361 is fixedly provided with a fifth spring 363. One end of the fifth spring 363 away from the movable rod 361 is fixedly arranged on the handle 1. The movable rod 361 is fixedly provided with a top column 364. Figure 4 The snap 341 is slidably provided with a moving buckle 365. The moving buckle 365 is slidably provided with a pressing rod 366 for pressing the top column 364. The pressing rod 366 is sleeved with a sixth spring 367. One end of the sixth spring 367 is fixedly arranged on the pressing rod 366. The other end of the sixth spring 367 is fixedly arranged on the moving buckle 365.

[0053] With reference to Figure 4 , Figure 6 and Figure 8, the operator holds the handle 1 to push the moving buckle 365 to push the pressing rod 366 to align with the top column 364, presses the pressing rod 366, the pressing rod 366 will push the top column 364 to move, the top column 364 drives the movable rod 361 to move, the movable rod 361 drives the stop block 362 to move away from the mounting plate 352, and the stop block 362 moves away from the mounting plate 352 to avoid blocking the movement path of the positioning plate 356. After pressing the pressing rod 366, refer to Figure 2 、 Figure 3 and Figure 4 , pull the pull buckle 333, the pull buckle 333 drives the pull rod 331 and the sliding rod 31 to move, the pull rod 331 compresses the second spring 332, and the sliding rod 31 pulls the first spring 322 to generate a tendency of firing movement.

[0054] refer to Figure 6 、 Figure 7 and Figure 8 , when the pull rod 331 is pulled, the pull rod 331 will drive the mounting table 351 to move, the mounting plate 352 on the mounting table 351 will move close to the push buckle 358, the push buckle 358 will abut against the movable plate 354 and push the movable plate 354 to slide on the guide rod 353, the movable plate 354 presses the fourth spring 355, the movable plate 354 pushes the push rod 357 to move, and the push rod 357 pushes the positioning plate 356 to rotate. When the mounting plate 352 abuts against the push buckle 358, the positioning plate 356 rotates to be perpendicular to the mounting plate 352, and the positioning plate 356 moves to be between the stop block 362 and the push buckle 358, at this time, the pull rod 331 is pulled to the maximum displacement, so that the control of the firing force of the pull rod 331 is facilitated. Then the operator releases the pressing rod 366, the fifth spring 363 pushes the movable rod 361 to move, the movable rod 361 drives the stop block 362 to move close to the mounting plate 352, and then the operator releases the pulling force of the pull rod 331, the pull rod 331 will drive the positioning plate 356 to abut against the stop block 362, and the stop block 362 blocks the positioning plate 356 to make the pull rod 331 and the sliding rod 31 in a state of being fired.

[0055] refer to Figure 4 、 Figure 5 and Figure 6 , after fixing the pull rod 331, the operator slides the moving buckle 365 into the press buckle 341 again, so that the pressing rod 366 is away from the top column 364, to prevent the pressing rod 366 from being pressed by mistake in the subsequent operation process and causing an error firing. After sliding the moving buckle 365 into the press buckle 341, the operator releases the pressing of the press buckle 341, such as Figure 9As shown, when the pull rod 331 is ready to fire, the pull rod 331 will move to the lower side of the button 341, at this time the third spring 342 pushes the button 341 to move, so that the button 341 moves to the outside of the handle 1, and the button 341 is blocked in front of the pull rod 331, so that the firing preparation is completed. The movement of the pull rod 331 is controlled by the movable rod 361 and the stop block 362, and the button 341 is blocked in front of the pull rod 331, which forms a double locking for the pull rod 331, preventing the pull rod 331 from moving due to external force, enhancing the protection mechanism of the staple gun, preventing accidental firing, and the locking of the stop block 362 can only be released by pushing the moving button 365 and pressing the pressure rod 366, avoiding firing under non-pre-set operation process, and ensuring the safety of the instrument during operation.

[0056] After the firing preparation is completed, referring to Figure 2 , Figure 3 , Figure 4 and Figure 7 , the worker holds the handle 1 to grab the staple, after grabbing the staple, the grabbing mechanism 2 is stretched into the cavity and the staple is stopped at the fixed position, then the operator presses the button 341 in the handle 1, the positioning step 3411 on the button 341 is pressed on the handle 1, the button 341 is quickly positioned, ensuring that the button 341 stays in the specified position, ensuring that the pull rod 331 can smoothly insert into the button 341 when the pull rod 331 fires, avoiding friction and impact between the button 341 and the pull rod 331, affecting the firing force of the pull rod 331. Then the operator pushes the moving button 365 to align the pressure rod 366 with the top column 364, presses the pressure rod 366 to move the movable rod 361, the movable rod 361 drives the stop block 362 to move away from the positioning plate 356, the second spring 332 resets to move the pull rod 331 with the slide rod 31, the slide rod 31 pushes the first spring 322, the first spring 322 pushes the ejector pin 323, and the ejector pin 323 pushes the staple to complete the firing of the staple.

[0057] Referring to Figure 7 and Figure 8 , when the movable rod 361 drives the stop block 362 to move away from the positioning plate 356, the pull rod 331 moves to drive the positioning plate 356 to move away from the stop block 362, the fourth spring 355 pushes the movable plate 354 to move, the movable plate 354 pulls the push rod 357 to move, thereby controlling the rotation of the positioning plate 356, so that the positioning plate 356 moves to the side close to the mounting plate 352, avoiding the movement jam caused by the blocking of the positioning plate 356, thereby improving the flexibility of the instrument operation, optimizing the flexibility of the movement of the pull rod 331, ensuring the smooth firing process and firing force of the pull rod 331, and also reducing the wear between the positioning plate 356 and the stop block 362 when the positioning plate 356 moves away from the stop block 362, which is conducive to enhancing the use performance of the staple gun.

[0058] The embodiment of the application further provides a maxillary sinus membrane repair method, comprising the following steps:

[0059] Step one: windowing and perforation exposure, incision and flap exposure to expose the lateral wall of the maxillary sinus, an oval or rectangular bone window with a length of about 15-20 mm and a width of about 8-10 mm is prepared in the middle of the lateral wall of the maxillary sinus corresponding to the top of the first and second molar roots of the maxilla using a ball drill or an ultrasonic bone cutter, and the edges of the bone window are trimmed smooth to facilitate clear exposure of the surgical field and smooth placement of the collagen membrane, the sinus membrane is carefully peeled off, the perforation part is fully exposed, and the maxillary sinus mucosa around the perforation is fully lifted to ensure that the sinus mucosa is relaxed; in the embodiment, the ball drill, the ultrasonic bone cutter and the collagen membrane are all prior art, and the structure or use method of the ball drill, the ultrasonic bone cutter and the collagen membrane is not described in the embodiment.

[0060] Step two: collagen membrane pretreatment and medial fixation, the collagen membrane with a size of 30mm*40mm is trimmed to a suitable shape according to the buccal-lingual width of the maxillary sinus, and the collagen membrane is placed across the inside and outside of the window, and two titanium nails with a length of 3mm are used to shoot the nail into the bone surface of the medial wall by the nail gun in the embodiment to fix the nail to the paranasal bone wall, which are respectively placed mesial and distal to the perforation area of the sinus membrane, to ensure that the perforation area at the bottom of the sinus membrane is completely covered, and the bottom wall area of the maxillary sinus is not covered by the collagen membrane, to ensure that the bone graft material can finally contact the bottom wall to maintain the blood supply of the bone graft material, and the nail in the embodiment is a titanium nail.

[0061] Step three: bone augmentation material placement, the bone augmentation material is evenly filled into the maxillary sinus along the window, and is lightly pressed and compacted to ensure uniform distribution of the material.

[0062] Step four: folding and fixing the collagen membrane on the lateral part of the maxillary sinus, the lateral collagen membrane is folded towards the edge of the window, tightly wrapping the bone augmentation material to form a cylindrical structure, and two titanium nails are fixed to the lateral wall of the maxillary sinus or the alveolar crest to ensure that the membrane closely adheres to the bone wall, and the double stabilization of the membrane and the material is completed.

[0063] Step five: wound closure, irrigation of the surgical area, and reduction of the periosteum flap, which is sutured with 4-0 suture to ensure tension-free closure.

[0064] Step six: X-ray examination, after the operation, the initial position and distribution state of the bone augmentation material in the maxillary sinus are recorded by CBCT examination, and the CBCT examination of the maxillary sinus is taken regularly for follow-up, and the long-term stability of the bone augmentation material is observed by comparing the CBCT before and after the operation at one month, three months, six months and after the completion of the repair.

[0065] The principle of the embodiment of the present application is that the operator holds the handle 1 and pushes the moving buckle 365 to push the pressing rod 366 to align with the top column 364, presses the pressing rod 366, the pressing rod 366 will push the movable rod 361 to drive the stop block 362 away from the mounting plate 352, then pulls the pull buckle 333 to drive the pull rod 331 and the sliding rod 31 to move, the pull rod 331 compresses the second spring 332, the pull rod 331 will drive the mounting table 351 to move, the mounting plate 352 on the mounting table 351 will move close to the push buckle 358, the push buckle 358 will abut against the movable plate 354 and push the movable plate 354 to slide on the guide rod 353, so that the push rod 357 pushes the positioning plate 356 to rotate to be perpendicular to the mounting plate 352. Then the operator releases the pressing rod 366, the movable rod 361 drives the stop block 362 to move close to the mounting plate 352, then the operator releases the pulling force on the pull rod 331, the pull rod 331 will drive the positioning plate 356 to abut against the stop block 362. Then the operator re-slides the moving buckle 365 into the press buckle 341 and releases the pressing of the press buckle 341 to complete the cocking preparation.

[0066] After the cocking preparation is completed, the operator holds the handle 1 to grab the film nail, after grabbing the film nail, the grabbing mechanism 2 is stretched into the oral cavity and the film nail is stopped at a fixed position, then the operator presses the press buckle 341 in the handle 1. Then the operator pushes the moving buckle 365 to align the pressing rod 366 with the top column 364, presses the pressing rod 366 to move the movable rod 361, the movable rod 361 drives the stop block 362 to move away from the positioning plate 356, the second spring 332 resets to make the pull rod 331 drive the sliding rod 31 to move, the sliding rod 31 pushes the first spring 322, the first spring 322 pushes the thimble 323, the thimble 323 pushes the film nail to complete the firing of the film nail.

[0067] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A maxillary sinus membrane elevator, characterized in that: The utility model provides a kind of film nail shooting device, including grip (1), the grip (1) is connected with catch nail mechanism (2) and the firing mechanism (3) of control film nail emission, the firing mechanism (3) includes the slide bar (31) being arranged in the catch nail mechanism (2), the slide bar (31) is connected with first spring (322), the slide bar (31) is connected with the firing film nail's ejector pin (323) on first spring (322);Pull rod (331) is slidably installed in the grip (1), the pull rod (331) is connected with the slide bar (31), the diameter of the slide bar (31) is less than the diameter of the pull rod (331), the pull rod (331) is sleeved with second spring (332);The grip (1) is installed with the control assembly (34) of controlling the pull rod (331) activity, the control assembly (34) includes snap (341), the snap (341) is slidably installed on the grip (1), the pull rod (331) passes through snap (341) and is slidably connected with snap (341), the grip (1) is installed with third spring (342), third spring (342) is connected with snap (341) by one end close to snap (341), the pull rod (331) is installed with mounting plate (352), the mounting plate (352) is installed with positioning plate (356), the grip (1) is slidably installed with movable rod (361), the movable rod (361) is installed with the stopper (362) of blocking the positioning plate (356), the movable rod (361) is connected with fifth spring (363), the fifth spring (363) is connected with the grip (1) by one end away from the movable rod (361), the movable rod (361) is installed with top column (364), the snap (341) is installed with the pressure rod (366) of pushing the top column (364) to move;The catch nail mechanism (2) includes connecting rod (21), the connecting rod (21) is installed on the grip (1), the connecting rod (21) is connected with catch nail rod (22) by one end away from the grip (1), the catch nail rod (22) is provided with catch nail groove (221), the slide bar (31) is slidably installed in the connecting rod (21), the slide bar (31) is inserted into the catch nail rod (22) by one end away from the grip (1), the slide bar (31) is connected with first spring (322) by one end inserted into the catch nail rod (22), first spring (322) is arranged in the catch nail rod (22), first spring (322) is connected with the ejector pin (323) by one end away from the slide bar (31).

2. A maxillary membrane stent gun according to claim 1, characterized in that: An installation groove (3521) is formed in the installation plate (352), a guide rod (353) is installed on the installation plate (352), the guide rod (353) is arranged in the installation groove (3521), a movable plate (354) is slidably installed on the guide rod (353), a fourth spring (355) is sleeved on the guide rod (353), one end of the fourth spring (355) is connected with the movable plate (354), the other end is connected with the installation plate (352), a push rod (357) is hinged on the movable plate (354), a positioning plate (356) is hinged on the installation plate (352), one end of the positioning plate (356) away from the installation plate (352) is hinged with the push rod (357), and a push buckle (358) for moving the movable plate (354) is installed on the handle rod (1).

3. A maxillary membrane stent gun according to claim 1, wherein: A moving buckle (365) is slidably installed on the press button (341), the press rod (366) is slidably installed on the moving buckle (365), the sixth spring (367) is sleeved on the press rod (366), one end of the sixth spring (367) is connected with the press rod (366), and the other end is connected with the moving buckle (365).

4. A maxillary membrane stent gun according to claim 1, characterized in that: A positioning step (3411) is arranged on the press button (341), and a step surface abutting against the positioning step (3411) is formed in the handle rod (1).

5. A maxillary membrane stent gun according to claim 1, wherein: The outer shape of the nail rod (22) is in the shape of a circular arc rod body, and the first spring (322) can change shape along with the arc shape of the nail rod (22).

6. A maxillary membrane stent gun according to claim 1, characterized in that: A threaded hole (12) is formed in the handle rod (1), an outer thread is arranged on one end of the connecting rod (21), the connecting rod (21) is detachably installed on the handle rod (1) through the threaded hole (12), an inner thread is formed in the inner wall of the other end of the connecting rod (21) away from the handle rod (1), and the connecting rod (21) is detachably connected with the nail rod (22) through the thread at the other end away from the handle rod (1).

7. A maxillary membrane stent gun according to claim 1, wherein: The handle rod (1) is a rod body with a larger diameter at both ends than at the middle position, and an anti-skid rib (11) is integrally formed on the handle rod (1).

8. A method of maxillary sinus membrane repair using a maxillary sinus membrane stent gun according to claim 1, characterized in that: The method comprises the following steps: Step one: windowing and perforation exposure, cut and flip the flap to expose the lateral wall of the maxillary sinus, use a ball drill or ultrasonic bone cutter to prepare a bone window in the middle of the lateral wall of the maxillary sinus corresponding to the top of the roots of the first and second maxillary molars, and smooth the edges of the bone window; Step two: collagen membrane pretreatment and inside fixation, trim the collagen membrane to a suitable shape according to the buccal-lingual width of the maxillary sinus, place the collagen membrane across the inside and outside of the window, and use a membrane nail gun to grab the membrane nails and shoot them to fix them to the paranasal bone wall through the inside wall bone surface, respectively placed in the mesial and distal of the perforation area of the sinus membrane, to ensure complete coverage of the perforation area of the sinus membrane bottom, while leaving the area of the maxillary sinus bottom wall uncovered by the collagen membrane, so that the bone graft material can finally contact the bottom wall; Step three: bone augmentation material placement, evenly fill the bone augmentation material into the maxillary sinus along the window, and compact it; Step four: Collagen membrane folding fixation of the lateral part of the maxillary sinus, folding the lateral collagen membrane to the edge of the window, tightly wrapping the bone augmentation material to form a cylindrical structure, and fixing it to the lateral wall of the maxillary sinus or the top of the alveolar ridge with membrane nails; Step five: Close the wound, flush the surgical area, and reset the periosteal flap with 4-0 interrupted sutures; Step six: X-ray examination, postoperative CBCT examination to record the initial position and distribution of the maxillary sinus bone augmentation material, and regular follow-up CBCT examination of the maxillary sinus.

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