Adjustable double-side symmetrical vertebral pedicle screw placement auxiliary device

Abstract

The invention provides an adjustable double-side symmetrical auxiliary device for pedicle screw placement, and belongs to the technical field of pedicle screw placement. Comprising a clamping and fixing mechanism, a first connecting frame is installed on the top of the clamping and fixing mechanism, a second connecting frame is installed on the side, away from the clamping and fixing mechanism, of the first connecting frame, and first light-weight grooves are formed in the second connecting frame at equal intervals. By arranging the installation adjusting mechanism, one needle containing sleeve can be rapidly installed on the center framework through the installation adjusting mechanism, the position and angle of the needle containing sleeve can be flexibly adjusted through cooperative use of all assemblies in the installation mechanism, and after one needle containing sleeve is installed, the needle containing sleeve can be rapidly installed on the center framework through the installation adjusting mechanism. The installation position and angle of the other needle placing sleeve are measured through the infrared emitter body installed on the needle placing sleeve, and after measurement is completed, the other needle placing sleeve is rapidly and stably installed on the center framework through the installation adjusting structure.

Description

Technical Field

[0001] The invention relates to the technical field of pedicle screw placement, and in particular to an adjustable bilaterally symmetrical pedicle screw placement auxiliary device. Background Art

[0002] Percutaneous pedicle screw fixation is performed under image guidance by making a hole in the skin to implant the pedicle screw-rod system, including pedicle screw implantation, connecting rod implantation, pedicle nut implantation, and necessary pedicle distraction or compression technology.

[0003] Pedicle screw fixation is often required, but there are often some problems in the current screw placement process. First, after the needle insertion point is selected, the hand cannot remain completely stable during the operation, which causes the screw placement operation to shake, causing the placement direction to deviate from the design; secondly, the cone often has symmetrical pedicles on both sides. Often after one side is screwed, the depth and angle of the previous screw placement need to be referred to when placing the contralateral cone screw. This part of the positioning operation is often based on experience and subjective estimation of the eyes, which will invisibly increase the number of perspectives and the risk of operation. Therefore, this application provides an adjustable bilaterally symmetrical pedicle screw placement auxiliary device to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an adjustable bilaterally symmetrical pedicle screw placement auxiliary device. By setting up an installation adjustment mechanism, not only can a needle placement sleeve be quickly installed on a central frame by using the installation adjustment mechanism, but the position and angle of the needle placement sleeve can also be flexibly adjusted by using the coordinated use of various components in the installation mechanism. After installing one needle placement sleeve, the installation position and angle of another needle placement sleeve are measured by using the infrared transmitter body installed on the needle placement sleeve. After the measurement is completed, the installation adjustment structure is used to quickly and stably install the other needle placement sleeve on the central frame. The above settings can solve the problems of inconvenient positioning and poor accuracy of existing screw placement operations.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An adjustable bilaterally symmetrical pedicle screw placement auxiliary device comprises a clamping and fixing mechanism, a first connecting frame is installed on the top of the clamping and fixing mechanism, a second connecting frame is installed on the side of the first connecting frame away from the clamping and fixing mechanism, a first lightweight groove is equidistantly provided on the second connecting frame, the clamping and fixing mechanism, the first connecting frame and the second connecting frame are two in number, a central frame is installed between the two second connecting frames, two needle placement sleeves are installed on one side of the central frame, an infrared transmitter body is installed on one of the needle placement sleeves; an installation adjustment mechanism is installed, the installation adjustment mechanism is used for the installation and adjustment of the needle placement sleeve, and the installation adjustment mechanism is connected to the central frame.

[0007] Optionally, the clamping and fixing mechanism is provided with two clamps, one of which is arranged at the bottom of the clamping and fixing mechanism, and the other of which is arranged at the top of the clamping and fixing mechanism, and two clamping plates are provided at one of the clamps at the top, and an anti-slip groove is provided on one side of the clamping plate close to the first connecting frame, and anti-slip protrusions matching the shape of the anti-slip groove are provided on both sides of the bottom of the first connecting frame.

[0008] Optionally, the top end of the first connecting frame is fixedly connected to the second connecting block, the end of the second connecting frame on one side away from the central skeleton is fixedly connected to the first connecting block, the first connecting block is provided with an installation groove adapted to the shape of the second connecting block, the second connecting block is provided with a slot, grooves are provided on both sides of the first connecting block, and the second connecting block is fixedly connected to a protrusion adapted to the shape of the groove on the side close to the first connecting block.

[0009] Optionally, the installation and adjustment mechanism includes a rotating block installed on the central skeleton, and the side of the rotating block away from the central skeleton is rotatably connected to a clip that matches the shape of the needle placement sleeve, and the side of the rotating block close to the central skeleton is equidistantly provided with limit blocks, and the central skeleton is equidistantly provided with limit grooves that match the shape of the limit blocks, and the bottom of the central skeleton is equidistantly provided with slots, screws are inserted in the slots, and a screw sleeve is sleeved on the screw, and the needle placement sleeve is equidistantly provided with a third lightweight groove in an annular shape.

[0010] Optionally, the cross-section of the central skeleton is arch-shaped, the two second connecting frames and the central skeleton are integrally formed, and the central skeleton is made of stainless steel.

[0011] Optionally, second lightweight slots are equidistantly provided on the top of the central skeleton, and the slots are arranged in three groups equidistantly laterally on the central skeleton.

[0012] Optionally, two limiting plates are provided on opposite sides of the top of the central skeleton, and the top of the rotating block is fixedly connected with an end block whose shape matches that of the limiting plates.

[0013] Optionally, a limiting portion is provided on a side of the limiting plate away from the central frame, a buffer cavity is provided on a side of the end block close to the limiting plate, and the limiting plate and the end block are made of plastic material.

[0014] Optionally, a guide end piece is fixedly connected to the top of the needle placement sleeve, a fourth lightweight groove is annularly and equidistantly provided on the guide end piece, and a guide portion is provided on the top of the guide end piece.

[0015] Optionally, the outer diameter of the screw is equal to the width of the third lightweight groove, the inner diameter of the screw sleeve is equal to the outer diameter of the screw, and the outer wall of the screw sleeve is annularly and equidistantly provided with anti-slip grooves with a depth of two millimeters.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting up the installation adjustment mechanism, not only can a needle placement sleeve be quickly installed on the central frame by using the installation adjustment mechanism, but also the position and angle of the needle placement sleeve can be flexibly adjusted by using the coordinated use of various components in the installation mechanism. After installing one needle placement sleeve, the installation position and angle of another needle placement sleeve are measured by using the infrared transmitter body installed on the needle placement sleeve. After the measurement is completed, the other needle placement sleeve is quickly and stably installed on the central frame by using the installation adjustment structure, so that the device can be well used for the auxiliary operation of bilaterally symmetrical pedicle screw placement, and the stability during the screw placement process is guaranteed. The auxiliary positioning of the device effectively reduces the surgical risk caused by angle deviation during the operation, and the coordinated use of the structures also effectively improves the work efficiency of the operation.

[0018] By providing a second connecting frame, a central frame, an anti-skid groove and an anti-skid protrusion in the device, not only can the anti-skid groove and the anti-skid protrusion be used to further limit and fix the first connecting frame, so that the clamping and fixing mechanism can better clamp and fix the first connecting frame, and thus the first connecting frame can play a stable supporting role during use, thereby facilitating the operation of pedicle screw placement during surgery, and the second connecting frame and the top of the central frame form an arch structure, which further improves the stability of the device, so that the force on the entire device during screw placement is more uniform, and thus the device will not shake, ensuring the safe conduct of the operation, and the two second connecting frames can also assist in limiting the patient's back, and the coordinated use of the structures effectively makes the use of the device better, and the structure is simple and easy to use.

[0019] By arranging a needle placement sleeve and an infrared transmitter body in the device, and marking the needle placement sleeve with a scale, not only can the depth of the needle placement sleeve be recorded for easy reference on the opposite side, but also after determining the installation position and angle of a needle placement sleeve, the infrared transmitter body can be used to calibrate the angle and depth of a needle placement sleeve on the opposite side, thereby reducing the number of intraoperative fluoroscopy times and the risks brought by multiple operations, and using the stably installed needle placement sleeve to guide the nail placement operation, effectively avoiding the problem of position and angle deviation during nail placement due to unstable hands of the operator.

[0020] By providing a guide end piece in the device, the guide end piece is used to guide the nail into the needle placement sleeve, so that the nail can quickly enter the channel of the needle placement sleeve along the guide part, and then the needle placement sleeve is used to assist the operation of nail placement, and the fourth lightweight groove can reduce the weight of the guide end piece, and the coordinated use of the structures effectively makes the use effect of the device better, and the structure is simple and easy to use.

[0021] By providing a third lightweight groove and a slot in the installation and adjustment mechanism, not only can a screw be passed through the third lightweight groove, and then the screw is inserted into the corresponding slot on the central frame, and then the sleeve is sleeved on the screw, when the sleeve is not completely tightened, the needle placement sleeve can be rotated and adjusted according to the angle required for the needle placement sleeve, so as to adjust the angle of the needle placement sleeve, so that the needle placement sleeve can be better used for the auxiliary operation of nail placement, after the limit groove and the limit block are connected, the sleeve on the screw is rotated by hand to completely fix the sleeve so that the position of the needle placement sleeve is completely fixed in the required third lightweight groove and slot, the coordinated use of the third lightweight groove and the slot can make the two needle placement sleeves quickly and stably installed on the central frame at the required distance and depth for use, and the coordinated use of the structures effectively makes the use effect of the installation and adjustment mechanism better, and the structure is simple and easy to use.

[0022] By providing a rotating block and a limiting groove in the installation and adjustment mechanism, not only can the rotating block rotatably connected to the clip be aligned with the limiting groove, and then the needle sleeve can be pressed toward the center frame so that the limiting block on the rotating block is set in the limiting groove, the top of the needle sleeve can be quickly limited, and in conjunction with the use of the above-mentioned slot and the third lightweight slot, the two positioning positions can be utilized to stably position the needle sleeve at the optimal nail placement angle, and the coordinated use of the structures can quickly determine the angle and position of the nail placement, thereby reducing the operation time and controlling the amount of bleeding during the operation to a certain extent, thereby effectively reducing the risk of surgical insertion, and the coordinated use of the structures effectively makes the use of the installation and adjustment mechanism better, and the structure is simple and easy to use.

[0023] By providing a limit plate and an end block in the installation and adjustment mechanism, not only can the end block be squeezed into the limit plate during the connection between the limit block and the limit groove, but the position of the rotation block can be further limited by the limit plate and the end block, thereby ensuring that a positioning point of the needle sleeve close to the clamping piece will not be displaced during the entire operation, but also ensuring that another positioning point on the needle sleeve will not be angularly displaced. When the structures are used in coordination, the device has better stability during use, and the coordinated use of the structures effectively makes the use effect of the installation and adjustment mechanism better, and the structure is simple and easy to use.

[0024] In summary, the device can not only enable the two needle placement sleeves to be quickly installed on the central frame for use through the installation of the adjustment mechanism and the coordinated use of the various components therein, but also the entire device has good stability, is relatively convenient to connect and disassemble, and is convenient for the storage of the device, and utilizes the two needle placement sleeves to assist in the nail placement operation, thereby ensuring the stability during the nail placement process, thereby ensuring the safety of the operation, and the device has a simple structure, is easy and quick to use, and has a low production cost, good practicality, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of an adjustable bilaterally symmetrical pedicle screw placement auxiliary device from a first-person perspective;

[0027] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0028] Figure 3 It is a schematic diagram of the structure of an adjustable bilaterally symmetrical pedicle screw placement auxiliary device;

[0029] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the central skeleton and the limiting piece;

[0030] Figure 5 for Figure 4 The enlarged structural diagram at B in the middle;

[0031] Figure 6 It is a schematic diagram of the exploded three-dimensional structure of an adjustable bilaterally symmetrical pedicle screw placement auxiliary device;

[0032] Figure 7 for Figure 6 The enlarged structural diagram at C in the middle;

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure of the adjustable bilaterally symmetrical pedicle screw placement auxiliary device and the pedicle;

[0034] Fig. 9 It is a schematic diagram of the stereoscopic structure of an adjustable bilaterally symmetrical pedicle screw placement auxiliary device from a second viewing angle;

[0035] Fig.10 for Fig. 9 The enlarged structural diagram at D in the middle;

[0036] Fig.11 for Fig. 9 The enlarged structural diagram at E in the middle;

[0037] Fig.12 for Fig. 9 The enlarged structural diagram at F in the middle;

[0038] Fig.13 It is a schematic diagram of the three-dimensional structure of the adjustable bilaterally symmetrical pedicle screw placement auxiliary device in actual use;

[0039] Fig.14 It is a connection diagram of the rotating block and the rotating slot.

[0040] Reference numerals:

[0041] 1. Clamping and fixing mechanism; 101. Clamping mouth; 102. Clamping piece; 103. Bolt; 2. First connecting frame; 3. Second connecting frame; 4. First lightweight slot; 5. First connecting block; 6. Second connecting block; 7. Slotting; 8. Mounting slot; 9. Central skeleton; 10. Limiting slot; 11. Slot; 12. Second lightweight slot; 13. Needle placement sleeve; 14. Third lightweight slot; 15. Guide end piece; 16. Fourth lightweight slot; 17. Guide part; 18. Screw; 19. Screw sleeve; 20. Rotating block; 201. Rotating slot; 21. Clip; 211. Rotating block; 22. Infrared transmitter body; 23. Limiting piece; 24. Limiting block; 25. End block; 26. Buffer cavity; 27. Limiting part; 28. Fifth lightweight slot; 29. ​​Anti-skid groove; 30. Anti-skid protrusion.

[0042] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0043] The following is a detailed description of an adjustable bilaterally symmetrical pedicle screw placement auxiliary device provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0044] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it should be within the knowledge of technicians in the relevant field whether or not such features, structures or characteristics are explicitly described in conjunction with other embodiments.

[0045] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0046] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0047] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0048] like Figures 1 to 14As shown, an embodiment of the present invention provides an adjustable bilaterally symmetrical pedicle screw placement auxiliary device, including a clamping and fixing mechanism 1, a first connecting frame 2 is installed on the top of the clamping and fixing mechanism 1, and fifth lightweight slots 28 are evenly spaced on the first connecting frame 2 to reduce the weight of the first connecting frame 2. A second connecting frame 3 is installed on the side of the first connecting frame 2 away from the clamping and fixing mechanism 1, and first lightweight slots 4 are evenly spaced on the second connecting frame 3.

[0049] The clamping and fixing mechanism 1, the first connecting frame 2 and the second connecting frame 3 are each two, a central frame 9 is installed between the two second connecting frames 3, two needle placement sleeves 13 are installed on one side of the central frame 9, and an infrared transmitter body 22 is installed on one needle placement sleeve 13.

[0050] The installation and adjustment mechanism is used for the installation and adjustment of the needle sleeve 13. The installation and adjustment mechanism is connected to the central frame 9. The two clamping and fixing mechanisms 1 are clamped and fixed on both sides of the operating table where the patient is located. Fig.13 As shown, the first connecting frame 2 is clamped and fixed thereon by the clamping and fixing mechanism 1, wherein the specific structure and working principle of the clamping and fixing mechanism 1 are existing mature technologies, so no further details are given here. Then the second connecting frame 3 is connected to the first connecting frame 2 together.

[0051] like Figure 7 and Fig.11 As shown, the top end of the first connecting frame 2 is fixedly connected with the second connecting block 6, the end of the second connecting frame 3 away from the central skeleton 9 is fixedly connected with the first connecting block 5, the first connecting block 5 is provided with a mounting groove 8 matched with the shape of the second connecting block 6, the second connecting block 6 is provided with a slot 7, grooves are provided on both sides of the first connecting block 5, and a protrusion matched with the shape of the groove is fixedly connected to the side of the second connecting block 6 close to the first connecting block 5, by aligning the second connecting block 6 with the mounting groove 8, and then pressing the second connecting block 6 into the mounting groove 8, When the second connecting block 6 is extruded, the groove 7 opened on it is used to enhance the deformation ability of its end shell, so that the second connecting block 6 can be inserted and fixed into the installation groove 8 more quickly, so that the second connecting block 6 is completely inserted into the installation groove 8, and the protrusion on the second connecting block 6 is tightly connected with the groove on the first connecting block 5, so that the first connecting block 5 and the second connecting block 6 are quickly and stably fixed and connected, and then the first connecting frame 2 and the second connecting frame 3 are connected together, and the above operation is repeated to install the two second connecting frames 3 and the two first connecting frames 2 respectively.

[0052] A needle sleeve 13 can be quickly installed on the central skeleton 9 by using the installation and adjustment mechanism, and the position and angle of the needle sleeve 13 can be flexibly adjusted by using the coordinated use of the various components in the installation and adjustment mechanism. After installing one needle sleeve 13, the installation position and angle of another needle sleeve 13 are measured using the infrared transmitter body 22 installed on the needle sleeve 13. After the measurement is completed, the other needle sleeve 13 is quickly and stably installed on the central skeleton 9 using the installation and adjustment structure, so that the device can be well used for the auxiliary operation of bilaterally symmetrical pedicle screw placement, and the stability during the screw placement process is guaranteed. The auxiliary positioning of the device effectively reduces the surgical risk caused by angle deviation during the operation, and the coordinated use of the structures also effectively improves the work efficiency of the operation. The structure is simple and easy to use. The specific structure and working principle of the above-mentioned installation and adjustment mechanism are described in detail below.

[0053] like Fig.12 As shown, the clamping and fixing mechanism 1 is provided with two clamps 101, one clamp 101 is arranged at the bottom of the clamping and fixing mechanism 1, and the other clamp 101 is arranged at the top of the clamping and fixing mechanism 1. The clamp 101 arranged at the top is a typical vise structure, and the clamp 101 arranged at the bottom is clamped by a bolt 103. Two opposite clamping pieces 102 are provided at a clamping opening 101 at the top, and an anti-skid groove 29 is provided on one side of the clamping piece 102 close to the first connecting frame 2. Anti-skid protrusions 30 matching the shape of the anti-skid groove 29 are provided on both sides of the bottom of the first connecting frame 2. The clamping and fixing mechanism 1 is installed on the side of the operating bed by aligning a clamping opening 101 at the bottom of the clamping and fixing mechanism 1 with the side edge of the operating bed, and then adjusting the size of the clamping opening 101. By placing the bottom of the first connecting frame 2 in a clamping opening 101 at the top of the clamping and fixing mechanism 1, a threaded hole is provided on one clamping piece 102, and a socket is provided on the other clamping piece 102. A threaded adjustment rod is inserted into the threaded hole and the socket. The bottom of the clamping piece 102 is provided with a limiting groove, and the top of the clamping and fixing mechanism 1 is provided with a limiting piece that matches the shape of the limiting groove. The threaded adjustment rod is rotated to make one clamping piece 102 slide along the limiting piece under the action of the thread, thereby adjusting the distance between the two clamping pieces 102, clamping the bottom of the first connecting frame 2, and at the same time using the anti-slip groove 29 and the anti-slip protrusion 30 to further limit and fix the first connecting frame 2, so that the clamping and fixing mechanism 1 has a better clamping and fixing effect on the first connecting frame 2, thereby making the first connecting frame 2 play a stable supporting role during use, thereby facilitating the operation of pedicle screw placement during surgery, and the second connecting frame 3 and the top of the central skeleton 9 form an arched structure such as Figure 1 As shown, the stability of the device is further improved, so that the force applied to the entire device during nail placement is more uniform, thereby preventing the device from shaking and ensuring the safety of the operation.

[0054] like Figures 4 to 13 As shown, the installation adjustment mechanism includes a rotating block 20 installed on the central frame 9, and a clip 21 matching the shape of the needle sleeve 13 is rotatably connected to the rotating block 20 away from the central frame 9, and the clip 21 surrounds the needle sleeve 13. The rotating block 20 rotatably connected to the clip 21 is specifically, as shown in FIG. Fig.14 As shown, a rotating block 211 is fixedly connected to the side of the clip 21 close to the rotating block 20, and the rotating block 211 is a rotating body. A rotating groove 201 matching the shape of the rotating block 211 is provided on the side of the rotating block 20 close to the clip 21, and the rotating groove 201 is a rotating groove. A stop block 24 is equidistantly provided on the side of the rotating block 20 close to the central frame 9, and a stop groove 10 matching the shape of the stop block 24 is equidistantly provided on the central frame 9. Slots 11 are equidistantly provided at the bottom of the central frame 9, and screws 18 are inserted into the slots 11, and screw sleeves 19 are sleeved on the screws 18.

[0055] The needle placement sleeve 13 is provided with third lightweight grooves 14 at equal intervals around the circumference. The rotating block 20 and the limit block 24 are integrally formed. The limit block 24 is serrated. The cross-section of the rotating block 20 is square. The clip 21 is made of plastic material. The inside of the clip 21 is rough. By pressing the clip 21 toward the needle placement sleeve 13, the clip 21 is deformed due to the pressing force. The clip 21 is sleeved and installed on the needle placement sleeve 13. The position of the clip 21 on the needle placement sleeve 13 can be used to adjust the depth of the needle placement sleeve 13 inserted into the patient's subcutaneous tissue, so that the structure can be used for auxiliary operations of nail placement at different depths.

[0056] After the clip 21 is connected to the needle sleeve 13, the screw placement position on one side of the pedicle is determined by passing a screw 18 through the third lightweight slot 14, and then inserting the screw 18 into the corresponding slot 11 on the central skeleton 9, and then sleeve 19 on the screw 18. At this time, the sleeve 19 is not completely tightened. The needle sleeve 13 is rotated and adjusted according to the angle required by the needle sleeve 13, and then the rotating block 20 rotatably connected to the clip 21 is aligned with the limiting slot 10, and then the needle sleeve 13 is pressed toward the central skeleton 9, so that the limiting block 24 on the rotating block 20 is clamped in the limiting slot 10, thereby limiting the top of the needle sleeve 13, and using two positionings to stably position the needle sleeve 13 at the optimal screw placement angle.

[0057] After the limit groove 10 and the limit block 24 are connected, the screw sleeve 19 on the screw 18 is manually rotated to completely fix the screw sleeve 19, so that the position of the needle sleeve 13 is completely fixed, and then the infrared transmitter body 22 on the needle sleeve 13 is used to measure the installation position of the other needle sleeve 13, so that the two needle sleeves 13 are symmetrical about the central axis of the central skeleton 9. After the measurement is completed, the above-mentioned installation operation of the needle sleeve 13 is repeated to install the other needle sleeve 13. The structure is simple and flexible. The needle sleeve 13 is used to assist the bilaterally symmetrical nail placement operation, which not only improves the stability of the nail placement, but also the angle and position of the nail placement can be quickly determined, thereby reducing the operation time and controlling the amount of bleeding during the operation to a certain extent, thereby effectively reducing the risk of surgical insertion. The coordinated use of the structures makes the device more practical, and the device has a simple structure and relatively low cost, which is easy to promote and use.

[0058] The cross section of the central skeleton 9 is arched, so that the top of the central skeleton 9 and the two needle sleeves 13 form an arched structure, and the bottom of the central skeleton 9 is used to assist in strengthening the support effect of the stability of the structure, and the top and bottom parts of the central skeleton 9 are used to fix two points of the needle sleeve 13 respectively, thereby enhancing the stability of the installation of the needle sleeve 13. The two second connecting frames 3 and the central skeleton 9 are integrally formed, and the integrally formed structure has better stability.

[0059] The central frame 9 is made of stainless steel, which has high strength and good corrosion resistance, further enhancing the stability of the device. The top of the central frame 9 is equidistantly provided with second lightweight grooves 12, which can effectively reduce the weight of the central frame 9 and reduce the production material consumption of the central frame 9.

[0060] The slots 11 are arranged in three groups laterally and equidistantly on the central frame 9, so that they can be used in conjunction with the third lightweight slot 14 to make the installation position of the screw 18 more flexible, thereby allowing the installation distance and angle of the two needle sleeves 13 to be better adjusted and controlled.

[0061] Two limiting plates 23 are provided on opposite sides of the top of the central skeleton 9, which can protect the edge of the top of the central skeleton 9 and prevent medical staff from accidentally touching the edge of the central skeleton 9 and scratching their gloves during operation. The limiting plate 23 on the side close to the needle sleeve 13 also plays an auxiliary limiting role in the installation of the needle sleeve 13.

[0062] The top of the rotating block 20 is fixedly connected with an end block 25 that is adapted to the shape of the limiting piece 23. A limiting portion 27 is provided on the side of the limiting piece 23 away from the central skeleton 9, and a buffer cavity 26 is provided on the side of the end block 25 close to the limiting piece 23. The limiting piece 23 and the end block 25 are made of plastic material. During the process of clamping and connecting the limiting block 24 and the limiting groove 10, the end block 25 is squeezed into the limiting piece 23. When the end block 25 is squeezed, the buffer cavity 26 therein is deformed, so that the end block 25 can be installed into the limiting piece 23 more quickly, and the limiting portion 27 is used to limit the end block 25 well, so that the rotating block 20 is more stably connected to the central skeleton 9, thereby ensuring that a positioning point of the needle sleeve 13 close to the clip 21 will not be displaced during the entire operation, and at the same time, it is also ensured that another positioning point on the needle sleeve 13 will not be angularly offset. The coordinated use of the structures makes the device more stable during use.

[0063] like Figures 4 to 10 As shown, the needle placement sleeve 13 is marked with scales, which not only allows the depth of the needle placement sleeve to be recorded, but also facilitates reference on the opposite side. The top of the needle placement sleeve 13 is fixedly connected with a guide end piece 15, and the guide end piece 15 is provided with a fourth lightweight groove 16 in an annular and equidistant manner. The top of the guide end piece 15 is provided with a guide portion 17. The guide end piece 15 is used to guide the nail into the needle placement sleeve 13, so that the nail can quickly enter the channel of the needle placement sleeve 13 along the guide portion 17, and then the needle placement sleeve 13 is used to assist the operation of nail placement. In addition, the fourth lightweight groove 16 can reduce the mass of the guide end piece 15, and the outer diameter of the screw 18 is equal to the width of the third lightweight groove 14. Through the above size design, the screw 18 can be stably installed in the third lightweight groove 14, and the inner diameter of the screw sleeve 19 is equal to the outer diameter of the screw 18, so that the screw sleeve 19 can be stably installed on the screw 18. The outer wall of the screw sleeve 19 is provided with anti-skid grooves with a depth of two millimeters at equal intervals to facilitate the rotation of the screw sleeve 19, thereby adjusting the tightness of the screw 18. The coordinated use of the structures further improves the use effect of the device.

[0064] The working principle of the technical solution provided by the present invention is as follows:

[0065] When in use, the clamping and fixing mechanism 1 is installed on the side of the operating bed by aligning a clamping opening 101 at the bottom of the clamping and fixing mechanism 1 with the side edge of the operating bed, and then adjusting the size of the clamping opening 101. The bottom of the first connecting frame 2 is placed in a clamping opening 101 at the top of the clamping and fixing mechanism 1, and then adjusting the distance between the two clamping pieces 102 to clamp the bottom of the first connecting frame 2. At the same time, the first connecting frame 2 is further limited and fixed by using the anti-slip groove 29 and the anti-slip protrusion 30. After the two clamping and fixing mechanisms 1 and the first connecting frame 2 are installed respectively, the second connecting block 6 is aligned with the installation groove 8, and then the second connecting block 6 is moved to The second connecting block 6 is pressed into the installation groove 8, and the groove 7 opened on it is used to enhance the deformation ability of the end shell when squeezing the second connecting block 6, so that the second connecting block 6 can be inserted and fixed into the installation groove 8 more quickly, so that the second connecting block 6 is completely inserted into the installation groove 8, and the protrusion on the second connecting block 6 is tightly connected with the groove on the first connecting block 5, so that the first connecting block 5 and the second connecting block 6 are quickly and stably fixed and connected, and then the first connecting frame 2 and the second connecting frame 3 are connected together. After repeating the above operation to install the two second connecting frames 3 and the two first connecting frames 2 respectively, the central skeleton 9 on the second connecting frame 3 is also fixed.

[0066] Then, the clip 21 is pressed toward the needle sleeve 13. The clip 21 is deformed by the pressing force, and the clip 21 is sleeved and installed on the needle sleeve 13. The depth of the needle sleeve 13 inserted into the patient's subcutaneous tissue can be adjusted by using the position of the clip 21 sleeved on the needle sleeve 13, so that the structure can be used for auxiliary operations of nail placement at different depths. After completing the connection between the clip 21 and the needle sleeve 13, and then determining the nail placement position on one side of the pedicle, a screw 18 is passed through the third lightweight slot 14, and then the screw 18 is inserted into the corresponding slot 11 on the central skeleton 9, and then the screw sleeve 19 is sleeved on the screw 18. At this time, the screw sleeve 19 is not completely tightened. The needle sleeve 13 is rotated and adjusted according to the angle required by the needle sleeve 13, and then the rotating block 20 rotatably connected on the clip 21 is aligned with the limiting slot 10, and then Then, the needle sleeve 13 is pressed toward the central skeleton 9, so that the limit block 24 on the rotating block 20 is clamped in the limit groove 10, thereby limiting the top of the needle sleeve 13, and in the process of clamping and connecting the limit block 24 and the limit groove 10, the end block 25 is squeezed into the limit plate 23. When the end block 25 is squeezed, the buffer cavity 26 therein is deformed, so that the end block 25 can be installed into the limit plate 23 more quickly, and the limit portion 27 is used to limit the end block 25 well, so that the rotating block 20 is more stably connected to the central skeleton 9, and then the two positionings are used to make the needle sleeve 13 stably at the optimal nail placement angle. After the limit groove 10 and the limit block 24 are connected, the screw sleeve 19 on the screw 18 is turned by hand to completely fix the screw sleeve 19, so that the position of the needle sleeve 13 is completely fixed.

[0067] Then, the infrared transmitter body 22 on the needle placement sleeve 13 is used to measure the installation position of another needle placement sleeve 13. After the measurement is completed, the above-mentioned installation operation of the needle placement sleeve 13 is repeated to install the other needle placement sleeve 13. After the two needle placement sleeves 13 are installed and fixed, the guide end piece 15 is used to guide the nail into the needle placement sleeve 13, so that the nail can quickly enter the channel of the needle placement sleeve 13 along the guide part 17. The needle placement sleeve 13 is used to assist the nail placement operation, so that the accuracy of the nail placement position and angle is better. When the needle placement sleeve 13 is used to assist the nail placement operation, the central skeleton 9 is first subjected to force, and then the force is dispersed to the bottom and both sides of the central skeleton 9, so that the overall force of the device is more uniform, so that the stability of the nail placement operation is better, and the coordinated use of the structures reduces the operation time to a certain extent, and also controls the amount of bleeding during the operation to a certain extent.

[0068] The two second connecting frames 3 and the central skeleton 9 are integrally formed, and the integral structure has better stability. The central skeleton 9 is made of stainless steel, which has high strength and good corrosion resistance, further enhancing the stability of the device. The top of the central skeleton 9 is equidistantly provided with second lightweight slots 12, which can effectively reduce the weight of the central skeleton 9 and reduce the production material consumption of the central skeleton 9. The slots 11 are arranged in three groups equidistantly on the central skeleton 9 horizontally, so that they can be used in conjunction with the third lightweight slots 14, making the installation position of the screws 18 more flexible, so that the installation distance and angle of the two needle sleeves 13 can be better adjusted and controlled, and the top of the central skeleton 9 on both sides is opposite. Two limit plates 23 are provided to protect the edge of the top of the central skeleton 9 and prevent medical staff from accidentally touching the edge of the central skeleton 9 and scratching their gloves during operation. The fourth lightweight groove 16 is used to reduce the mass of the guide end plate 15. The outer diameter of the screw 18 is equal to the width of the third lightweight groove 14, so that the screw 18 can be stably installed in the third lightweight groove 14. The inner diameter of the screw sleeve 19 is equal to the outer diameter of the screw 18 and the screw sleeve 19 can be stably installed on the screw 18. The outer wall of the screw sleeve 19 is equidistantly provided with anti-slip grooves with a depth of two millimeters to facilitate the rotation of the screw sleeve 19, thereby adjusting the tightness of the screw 18 installation. The coordinated use of the structures further improves the use effect of the device.

[0069] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An adjustable bilaterally symmetrical pedicle screw placement auxiliary device, characterized in that: It includes a clamping and fixing mechanism, a first connecting frame is installed on the top of the clamping and fixing mechanism, a second connecting frame is installed on the side of the first connecting frame away from the clamping and fixing mechanism, and a first lightweight slot is equidistantly provided on the second connecting frame. There are two of each of the clamping and fixing mechanism, the first connecting frame and the second connecting frame, a central frame is installed between the two second connecting frames, two needle placement sleeves are installed on one side of the central frame, and an infrared transmitter body is installed on one of the needle placement sleeves; An installation and adjustment mechanism is used for installing and adjusting the needle insertion sleeve, and the installation and adjustment mechanism is connected to the central skeleton.

2. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 1, characterized in that: The clamping and fixing mechanism is provided with two clamping openings, one of which is arranged at the bottom of the clamping and fixing mechanism, and the other of which is arranged at the top of the clamping and fixing mechanism, and two clamping plates are arranged at one of the clamping openings at the top, and an anti-slip groove is provided on one side of the clamping plate close to the first connecting frame, and anti-slip protrusions matching the shape of the anti-slip groove are provided on both sides of the bottom of the first connecting frame.

3. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 1, characterized in that: The top end of the first connecting frame is fixedly connected to the second connecting block, the end of the second connecting frame on one side away from the central skeleton is fixedly connected to the first connecting block, the first connecting block is provided with a mounting groove adapted to the shape of the second connecting block, the second connecting block is provided with a slot, grooves are provided on both sides of the first connecting block, and a protrusion adapted to the shape of the groove is fixedly connected to the side of the second connecting block close to the first connecting block.

4. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 1, characterized in that: The installation and adjustment mechanism includes a rotating block installed on the central skeleton, and the side of the rotating block away from the central skeleton is rotatably connected to a clip that matches the shape of the needle placement sleeve, and the side of the rotating block close to the central skeleton is equidistantly provided with limit blocks, and the central skeleton is equidistantly provided with limit grooves that match the shape of the limit blocks, and the bottom of the central skeleton is equidistantly provided with slots, screws are inserted in the slots, and screw sleeves are sleeved on the screws, and the needle placement sleeve is annularly provided with third lightweight grooves at equal intervals.

5. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 4, characterized in that: The cross section of the central skeleton is arch-shaped, the two second connecting frames and the central skeleton are integrally formed, and the central skeleton is made of stainless steel.

6. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 4, characterized in that: The top of the central frame is provided with second lightweight slots at equal intervals, and the slots are arranged in three groups at equal intervals laterally on the central frame.

7. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 4, characterized in that: Two limiting plates are arranged opposite to each other on both sides of the top of the central frame, and an end block whose shape matches that of the limiting plates is fixedly connected to the top of the rotating block.

8. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 7, characterized in that: A limiting portion is provided on a side of the limiting piece away from the central frame, a buffer cavity is provided on a side of the end block close to the limiting piece, and the limiting piece and the end block are made of plastic material.

9. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 1, characterized in that: The top of the needle placement sleeve is fixedly connected with a guide end piece, and the guide end piece is provided with fourth lightweight grooves in an annular manner and at equal intervals, and the top of the guide end piece is provided with a guide portion.

10. The adjustable bilaterally symmetrical pedicle screw placement auxiliary device according to claim 4, characterized in that: The outer diameter of the screw is equal to the width of the third lightweight groove, the inner diameter of the screw sleeve is equal to the outer diameter of the screw, and the outer wall of the screw sleeve is annularly and equidistantly provided with anti-slip patterns with a depth of two millimeters.

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