Vertebral pedicle operation awl

Abstract

The utility model provides a vertebral pedicle operation awl which comprises a holder and an awl body. And a mounting assembly is arranged on the holder. The mounting assembly comprises a fixing part and a limiting part, the limiting part is arranged at the end of the holder, and the fixing part is arranged between the limiting part and the holder. The cone comprises a cone head and a cone rod, and the cone head is arranged at the end of the cone rod. A fixing rod and a limiting rod are arranged on the conical head, the fixing rod can extend into and be fixed into the fixing part, and the limiting rod can extend into the limiting part. The pedicle operation awl provided by the utility model can simplify the process of a pedicle screw implantation operation. Operation steps are simplified, operation is simpler, operation difficulty is lower, operation time is shorter, and iatrogenic injury to a patient is avoided.

Description

Technical Field

[0001] The utility model relates to the field of spinal surgery, in particular to a pedicle surgery cone. Background Art

[0002] Pedicle screw devices are currently the most commonly used spinal fixation systems, which can provide strong three-dimensional holding force. Spinal fixation systems can provide holding force for spinal correction and other operations and help restore spinal stability, and are crucial in spinal surgery.

[0003] The pedicle screw needs to pass through the pedicle and reach the front of the cone. There are important structures such as the spinal cord and nerve roots around the pedicle, and important structures such as large blood vessels in the anterior and lateral sides of the spine. Poor positioning of the pedicle screw may lead to catastrophic consequences such as nerve damage and vascular damage, and even endanger the patient's life in severe cases.

[0004] In the related art, during the pedicle screw insertion process, an opener smaller than the diameter of the pedicle screw is required to prepare the screw channel. After the screw channel is prepared, a positioning cone is inserted and X-ray fluoroscopic positioning is performed. Whether the screw channel needs to be adjusted is determined based on the fluoroscopic results. The operation process is cumbersome.

[0005] In addition, there are many problems with this surgical procedure in the elderly patient population. For example, due to the thinning of the cortical bone of the pedicles and the reduction of cancellous bone in the elderly, multiple adjustments to open the path, explore the path, and position the path are likely to cause the screw placement channel to expand, reducing the holding force of the pedicle screws. When the opener is used to prepare the screw path, the entire pedicle has been passed. If the pedicle wall has been damaged, it is difficult to adjust and remedy it. Traditional positioning needles are too thin and too long, which can easily cut the pedicles and cause iatrogenic pedicle fractures. During this process, each change of surgical instruments and the use of positioning needles with a smaller diameter than the opener can cause a lot of bleeding in the channel, which can easily cause iatrogenic damage to patients. Utility Model Content

[0006] In order to overcome the defects existing in the related technology, the utility model provides a pedicle surgery cone.

[0007] The embodiment of the utility model is achieved as follows:

[0008] A pedicle surgery cone comprises a holder and a cone body. The holder is provided with a mounting assembly. The mounting assembly comprises a fixing portion and a limiting portion, the limiting portion is provided at the end of the holder, and the fixing portion is provided between the limiting portion and the holder. The cone body comprises a cone head and a cone rod, the cone head is provided at the end of the cone rod. The cone head is provided with a fixing rod and a limiting rod, the fixing rod can be extended into and fixed to the fixing portion, and the limiting rod can be extended into the limiting portion.

[0009] Furthermore, the limiting portion is configured as a limiting groove, the fixing portion is configured as a fixing groove, and the fixing groove is arranged in the limiting groove; the axis of the limiting groove and the axis of the fixing groove both coincide with the axis of the holder.

[0010] Furthermore, a first clamping member is disposed in the fixing groove, and a second clamping member is disposed on the fixing rod, and the first clamping member and the second clamping member can be relatively fixed.

[0011] Further, the first clamping member includes a flexible clamping ring, the second clamping member includes a clamping ball, the radius of the flexible clamping ring is set to R1, and the radius of the clamping ball is set to R2, satisfying: R1<R2.

[0012] Further, the distance between the flexible clamping ring and the limiting groove is set to L1, and the length of the fixing rod is set to L2, satisfying: L2+R2>L1>L2.

[0013] Furthermore, a plurality of the cones are provided, and the plurality of cones can be mounted on the holder; a distinguishing portion is provided on the cone, and the distinguishing portion on each cone has a different shape.

[0014] Furthermore, the distinguishing portion is arranged between the cone rod and the cone head, and the distance between the cone rod and the cone head on each of the cones is the same.

[0015] Furthermore, a portion of the cone rod away from the cone head is provided with a cone tip, and an end of the cone tip away from the cone rod is smoothly arranged.

[0016] Furthermore, scale lines are arranged on the cone rod between the cone tip and the cone head.

[0017] Furthermore, a gripping portion is provided on the end of the holder away from the mounting assembly, the length of the gripping portion is set to L3, and the overall length of the holder is set to L4, satisfying: 1 / 3L4≤L3≤1 / 4L4.

[0018] The beneficial effects of the embodiments of the utility model are:

[0019] The utility model provides a pedicle surgery cone, including a holder and a cone. The holder is provided with an installation assembly. The installation assembly includes a fixing part and a limiting part, the limiting part is arranged at the end of the holder, and the fixing part is arranged between the limiting part and the holder. The cone includes a cone head and a cone rod, and the cone head is arranged at the end of the cone rod. The cone head is provided with a fixing rod and a limiting rod, the fixing rod can be extended into and fixed in the fixing part, and the limiting rod can be extended into the limiting part. When using the pedicle surgery cone of the utility model, the cone is clamped on the holder, that is, the fixing rod on the cone head is extended into the fixing part, the holder and the cone are relatively fixed, the limiting rod on the cone head is extended into the limiting part, and the relative position of the holder and the cone is defined. After that, the cone can be controlled by the holder to extend into the surgical site of the patient for puncture, opening of the circuit, positioning and other surgical operations.

[0020] The pedicle surgery cone provided by the utility model can simplify the process of pedicle screw insertion surgery. The process of conventional surgery requires an opening cone to make an opening in the cortical bone, and the opening cone is inserted into the pedicle to establish a positioning needle channel. The positioning needle is inserted into the positioning needle channel, and then an X-ray is performed to check the position of the positioning needle. After confirmation, the positioning needle is removed and the pedicle screw is inserted into the positioning needle. The pedicle surgery cone provided by the utility model directly installs the cone on the holder, and the cortical bone opening and the positioning channel can be completed at one time. The cone is left in the positioning channel, and an X-ray examination and subsequent steps can be directly performed. The surgical steps are simplified, the operation is simpler, the operation is less difficult, and the time is shorter, avoiding iatrogenic damage to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a pedicle surgical cone from one perspective of an embodiment of the utility model;

[0023] Figure 2 A schematic structural diagram of a pedicle surgical cone from another perspective of an embodiment of the utility model;

[0024] Figure 3 The pedicle surgery cone of the utility model embodiment Figure 2 Sectional view at AA in the middle;

[0025] Figure 4 A schematic structural diagram of a cone from one perspective of an embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of a cone from one perspective of another embodiment of the utility model.

[0027] icon:

[0028] 100-holder; 110-gripping part; 200-installation assembly; 210-fixing part; 220-limiting part; 300-cone; 310-cone head; 311-fixing rod; 312-limiting rod; 320-cone rod; 321-scale line; 330-distinguishing part; 340-cone tip. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1

[0036] This embodiment provides a pedicle screw surgical cone to solve the problems in the related art that the pedicle screw insertion surgery has complicated steps, long operation time, high operation difficulty, requires a large number of surgical instruments, and is prone to iatrogenic damage to patients.

[0037] See also Figure 1 , Figure 2 A pedicle surgery cone includes a holder 100 and a cone body 300. The holder 100 is provided with a mounting assembly 200. The mounting assembly 200 includes a fixing portion 210 and a limiting portion 220. The limiting portion 220 is provided at the end of the holder 100, and the fixing portion 210 is provided between the limiting portion 220 and the holder 100. The cone body 300 includes a cone head 310 and a cone rod 320. The cone head 310 is provided with a fixing rod 311 and a limiting rod 312. The fixing rod 311 can be inserted into and fixed to the fixing portion 210, and the limiting rod 312 can be inserted into the limiting portion 220.

[0038] Specifically, when using the pedicle screw surgery cone of this embodiment, the cone 300 is clamped on the holder 100, that is, the fixing rod 311 at the cone head extends into the fixing part 210 of the holder 100, and the cone 300 is relatively fixed to the holder 100. The limiting rod 312 at the cone head 310 extends into the limiting part 220 of the holder 100, and defines the relative position of the cone 300 and the holder 100, that is, the cone 300 and the holder 100 are completely fixed. After that, the holder 100 is controlled to perform the pedicle screw surgery.

[0039] Traditional pedicle screw placement surgery has many steps. First, an opening cone with a shorter sharp section at the front is used to open the cortical bone; then an open cone is used to extend into the opening of the cortical bone and manually puncture, and the open cone is extended into the pedicle. After it is inserted into place, the open cone is pulled out to establish a positioning needle channel; then a positioning needle is used to insert the positioning needle into the positioning channel created by the open cone. After the positioning needle is inserted, X-rays are used for fluoroscopy to check and confirm whether the positioning needle is accurately and appropriately positioned and whether it is in the target position; after confirming that the positioning needle is in the target position, the positioning needle is removed and the pedicle screw is placed, and the surgery is completed.

[0040] The pedicle screw surgery cone of the utility model can simplify the steps. During the operation, the cone 300 is installed on the holder 100, and the holder 100 is directly used to control the cone 300 to open the bone cortex, and the cone 300 is manually punctured. The cone 300 is inserted into the pedicle and inserted into place. There is no need to pull out the cone 300 and then replace the fixed position. The holder 100 is directly removed and an X-ray fluoroscopic examination is performed. After confirming that the cone 300 is inserted into place, the cone 300 is taken out, and the pedicle screw is inserted, and the operation is completed.

[0041] The pedicle surgery cone provided in this embodiment integrates the functions of the opening cone, the path-opening cone, and the positioning cone, and can directly complete the opening, channel establishment, and positioning needle insertion in one step, thereby simplifying the surgical process, reducing the difficulty of the operation, shortening the operation time, and reducing the possible iatrogenic injuries to the patient.

[0042] It should be noted that when healthy adults undergo surgery, the risk is relatively low through the traditional pedicle screw placement surgical process. However, the same surgical process is currently used for pedicle screw placement surgery for the elderly. The pedicle cortex of the elderly is thinner and the cancellous bone is reduced, so the accuracy and stability of pedicle screw placement are extremely high. The traditional method uses an opening cone, a path-opening cone, and a positioning cone to perform path-opening, path-finding, and positioning operations multiple times, which is prone to the expansion of the screw placement channel, reducing the holding force of the pedicle screw and affecting the surgical effect. However, this embodiment completes the opening, path-opening, and positioning at one time, which can improve the safety and reliability of the operation.

[0043] Furthermore, in the traditional surgical process, every time the surgical instrument is replaced or a positioning needle with a smaller diameter than the opening cone is used, a large amount of bleeding will occur in the positioning channel. The blood volume of the elderly is small, and excessive blood loss will increase the transfusion rate, which has an adverse effect on surgical safety. However, in this embodiment, there is no need to replace the surgical instrument during the operation. The cone 300 is directly used to complete the opening, opening, and positioning. After completion, the screw is directly inserted to ensure less bleeding, avoid excessive blood loss, and reduce the transfusion rate.

[0044] It is worth mentioning that the smallest single-segment spinal surgery requires four pedicle screws for fixation. The above-mentioned traditional surgical process only prepares one pedicle screw channel, so the preparation of four pedicle screws requires 20 steps. Moreover, many elderly patients require long-segment fixation and correction, and may need to insert more than 8 or more pedicle screws for fixation. Therefore, the traditional screw placement operation time is long, the psychological pressure on the patient is greater, and the probability of complications is also higher. The simplification of the surgical process in this embodiment can effectively shorten the operation time and reduce the probability of complications.

[0045] In one embodiment, for example, Figure 2 As shown, the limiting portion 220 is configured as a limiting groove, the fixing portion 210 is configured as a fixing groove, and the fixing groove is disposed in the limiting groove; the axis of the limiting groove and the axis of the fixing groove coincide with the axis of the holder 100. It is ensured that after the cone 300 is mounted on the holding portion, the cone 300 and the holder 100 remain in the same straight line for subsequent use.

[0046] Specifically, the cone 300 and the holder 100 are arranged coaxially, which can improve the positioning accuracy and ensure that the medical worker can place the cone 300 in a suitable position during operation. In addition, the difficulty of surgery can be reduced. That is, when the cone 300 is controlled to extend through the holder 100, it is only necessary to control the direction of the holder 100 to ensure that the cone 300 extends along the appropriate axis, further reducing the difficulty of use of this embodiment and the difficulty of surgery.

[0047] It should be noted that the structure of the limiting groove and the limiting rod 312 is not limited in this embodiment, as long as the relative rotation between the cone 300 and the holder 100 can be limited. Figure 3 As shown, in this embodiment, the limit groove is set as an inner hexagonal groove, and correspondingly, the limit rod 312 is set as a hexagonal prism. In this way, after the limit rod 312 is extended into the limit groove, the hexagonal prism can cooperate with the inner hexagonal groove to complete the limitation between the cone 300 and the holder 100, preventing relative rotation between the two, so as to facilitate subsequent use by medical workers.

[0048] In one embodiment, for example, Figure 2 As shown, a first clamping member is provided in the fixing groove, and a second clamping member is provided on the fixing rod 311, and the first clamping member and the second clamping member can be relatively fixed. When the cone 300 and the holder 100 need to be connected to each other, the first clamping member and the second clamping member are clamped to each other, and the cone 300 can be controlled by the holder 100 to perform the surgical operation. After the operation is completed, similarly, the first clamping member and the second clamping member are detached, and the holder 100 and the cone 300 can be disinfected respectively, or a different cone 300 can be replaced on the holder 100 for the operation.

[0049] In one embodiment, for example, Figure 2 As shown, the first clamping member includes a flexible clamping ring, and the second clamping member includes a clamping ball. The radius of the flexible clamping ring is set to R1, and the radius of the clamping ball is set to R2, satisfying: R1<R2. In this way, when the clamping ball extends into the flexible clamping ring, it will squeeze the flexible clamping ring until the clamping ball passes through the inside of the flexible clamping ring. The flexible clamping ring returns to its original state and limits the position of the clamping ball, that is, the fixing rod 311 is limited by the clamping ball, so that the holder 100 and the cone 300 are reliably clamped. When the cone 300 needs to be disassembled from the holder 100, it is only necessary to directly pull the cone 300 so that the clamping ball at the end of the fixing rod 311 squeezes the flexible clamping ring again and passes through the flexible clamping ring, so that the clamping ball can be separated from the flexible clamping ring, that is, the cone 300 is separated from the holder 100, making installation and disassembly simple and convenient.

[0050] When in use, although there is force transmission between the cone 300 and the holder 100, it is the medical worker who holds the holder 100 and pushes the cone 300 into the patient's body. In other words, the force is transmitted in the direction from the holder 100 to the cone 300. Therefore, the cone 300 and the holder 100 can be restricted by only a flexible clamping ring and a clamping ball, and there is no need to worry about the cone 300 and the holder 100 accidentally detaching during use.

[0051] In one embodiment, for example, Figure 2 , Figure 4 As shown, the distance between the flexible snap ring and the limiting groove is set to L1, and the length of the fixed rod 311 is set to L2, which satisfies: L2+R2>L1>L2. In this way, after the fixed rod 311 is inserted into the fixing groove, the longest diameter of the snap ball at the top of the fixed rod 311 can just pass through the flexible snap ring, and after the fixed rod 311 is fully inserted into the fixing groove, the flexible snap ring is still snapped on the snap ball, that is, after the fixed rod 311 is extended to the limit position, the flexible snap ring is in the lower half of the snap ball, so that the flexible snap ring can give the snap ball an upward force, prompting the fixed rod 311 to continue to extend into the fixing groove, so that the cone 300 can stably abut against the holder 100 after being snapped on the holder 100, ensuring that the cone 300 and the holder 100 will not shake relative to each other during use.

[0052] It should be noted that if there is no restriction on the length of the fixing groove and the fixing rod 311, it may happen that after the fixing rod 311 is inserted into the fixing groove, the snap-in ball completely passes through the flexible snap-in ring. In this case, since the diameter of the fixing rod 311 is smaller than the diameter of the snap-in ball, the flexible snap-in ring cannot be firmly snapped onto the fixing rod 311, which will cause the fixing rod 311 and the fixing groove to move relative to each other along the extension direction of the fixing groove, resulting in the cone 300 and the holder 100 being unable to be reliably fixed, affecting subsequent use.

[0053] It is understandable that in this embodiment, the diameter of the fixing rod 311 is smaller than the diameter of the limiting rod 312. When the pedicle screw surgery cone of this embodiment is used, the force is transmitted from the holder 100 to the limiting rod 312 through the limiting portion 220, and then to the cone rod 320. In other words, during the force transmission process, the fixing rod 311 and the fixing portion 210 are only used to fix the relative position of the holder 100 and the cone 300, and do not transmit force, so as to ensure the reliable strength of the fixing portion 210 and the fixing rod 311.

[0054] In one embodiment, for example, Figure 4 , Figure 5 As shown, there are multiple cones 300, and the multiple cones 300 can be installed on the holder 100; the cone 300 is provided with a distinguishing portion 330, and the distinguishing portion 330 on each cone 300 has a different shape. There are multiple cones 300, so that during the operation, the holder 100 can separate the cone 300 after sending the cone 300 to the designated position; the next cone 300 to be used is clamped with the holder 100, and then operated by the holder 100 to send it to the next designated position, and the above operation is repeated to complete the operation of inserting the pedicle screw. A distinguishing portion 330 is provided on the cone 300, and the distinguishing portion 330 of each cone 300 has a different shape. The purpose is that during pedicle screw surgery, screws usually need to be inserted on both sides of the patient's spine. When the cone 300 is extended to a suitable position and an X-ray is performed to check whether the position of the cone 300 is appropriate, due to the limitations of medical equipment and the patient's body position, it is usually necessary to perform an X-ray from the side of the patient. When observed from the side, the cones 300 on both sides of the same spine overlap. Providing the distinguishing portion 330 on the cone 300 can ensure that when the position of the cone 300 is observed by X-ray, the cones 300 on both sides can be clearly and accurately observed, thereby ensuring the accuracy of the surgery.

[0055] In this embodiment, illustratively, the distinguishing portion 330 of one cone 300 is set as a sphere, and the distinguishing portion 330 of another cone 300 is set as a cylinder, so as to facilitate distinguishing the cones 300 on both sides of the same spine during subsequent X-ray fluoroscopy.

[0056] It can be understood that the distinguishing portions 330 of the multiple cones 300 on the same side of the spine can be set to the same shape, and the distinguishing portions 330 of the multiple cones 300 on the other side of the spine can also be set to the same shape. As long as the shapes of the distinguishing portions 330 of the cones 300 on both sides of the spine are different, they can be clearly distinguished during X-rays, and the specific positions of the cones 300 on both sides can be judged normally.

[0057] In one embodiment, for example, Figure 4 , Figure 5 As shown, the distinguishing portion 330 is arranged between the cone rod 320 and the cone head 310, and the distance between the cone rod 320 and the cone head 310 is the same on each cone 300. On the cone 300, the distance between the cone rod 320 and the cone head 310 is the same, that is, the length of the distinguishing portion 330 on the cone 300 is the same, so that it can be ensured that the distinguishing portion 330 on the cone 300 only distinguishes the shape of the cone 300, and the length of the cone 300 will not change, which reduces the difficulty of medical workers in operation, and also makes this embodiment easy to use.

[0058] In one embodiment, for example, Figure 2 , Figure 4 , Figure 5 As shown, the portion of the cone rod 320 away from the cone head 310 is provided with a cone tip 340, and the end of the cone tip 340 away from the cone rod 320 is smoothly set. The cone tip 340 is provided on the cone head 310, which can make the cone 300 of this embodiment integrate the functions of an opening cone and an open-circuit cone, so that the cone 300 of this embodiment can open on the bone cortex, and can also be inserted from the opening of the bone cortex, and the cone 300 is inserted into the pedicle and inserted into place. There is no need to replace other cones 300 during the operation, which simplifies the surgical steps and reduces the difficulty of the operation. The cone tip 340 is smoothly set, which can ensure that the cone tip 340 will not cause secondary damage to the patient's body after accidentally touching other parts of the patient or extending to the appropriate position, thereby improving the safety and reliability of this embodiment.

[0059] In this embodiment, as long as the cone tip 340 is smoothly arranged and the cone tip 340 can normally open the bone cortex and extend into the cancellous bone of the pedicle, there is no restriction on the angle of the cone tip 340. Exemplarily, the cone tip 340 is arranged as a conical tip 340, and the cone angle is arranged at 30°, so that the cone tip 340 can normally play the role of an opening cone and an open-circuit cone, and can also ensure that the cone body 300 will not cause damage to other parts of the patient after being placed in a suitable position.

[0060] In one embodiment, for example, Figure 4 , Figure 5As shown, the cone rod 320 between the cone tip 340 and the cone head 310 is provided with a scale line 321. The scale line 321 is provided on the cone rod 320, so that the medical staff can clearly and intuitively observe the distance of the cone 300 extending into the pedicle during the operation, thereby assisting the medical staff to judge the extension length of the cone 300 and whether the cone 300 is deeply inserted, so as to avoid damaging the pedicle bone cortical structure or causing other damage to the surrounding normal anatomical structure.

[0061] In addition, setting the scale line 321 on the cone rod 320 can also effectively reduce the operating pressure of medical workers. Specifically, during surgery, the extension distance of the cone 300 is intuitively displayed, and medical workers can make judgments more quickly and accurately to confirm whether the extension distance of the cone 300 is appropriate. The work completed by relying on "experience" in the traditional surgical process can be intuitively quantified by the scale line 321, reducing the burden on medical workers.

[0062] Furthermore, the scale lines 321 are set between the cone tip 340 and the cone head 310 to ensure that the scale lines 321 on each cone 300 are uniform, and the scale lines 321 will not be affected by the length of the cone tip 340 and the distinguishing part 330, so that medical workers can more easily read the extension length of the cone 300 during use, which is convenient for medical workers to operate.

[0063] In one embodiment, the total length of the cone 300 is 55 mm to 60 mm, and the diameter of the cone is 2.3 mm to 2.5 mm. The cone 300 is set as a solid cone 300, and the material is set as 316 stainless steel. Compared with the positioning cone in the traditional surgical instrument, the cone 300 of this embodiment has a thicker diameter. Through the dual setting of the diameter and the material, it is ensured that the cone 300 of this embodiment has sufficient strength during the operation of opening, opening, positioning, etc., and will not bend, deform, etc. during use.

[0064] It is worth mentioning that in the traditional surgical process, the positioning cone is usually used after the pedicle opener has prepared the positioning screw channel. The diameter of the positioning cone is smaller than the diameter of the opener, and the positioning screw channel is surrounded by cancellous bone. During multiple changes of surgical instruments, waiting for fluoroscopy and screw insertion, excessive blood loss will be caused.

[0065] In this embodiment, the cone 300 can be directly placed into the cancellous bone of the pedicle, thereby avoiding the damage to the cancellous bone caused by the opening cone and the blood loss caused by the mismatch between the positioning cone and the screw channel. After confirming that the position is good through fluoroscopy, the screw channel can be directly prepared and the screw can be implanted, which greatly reduces blood loss during the operation.

[0066] It should be noted that when using this embodiment, the surgical procedure is: the cone 300 is clamped on the holder 100, and the patient's cortical bone is opened; the holder 100 is used to control the cone 300, open the circuit, position, and insert the cone 300 into the pedicle, observe the depth of the cone 300, and release the positioning cone after entering the cancellous bone; after the cone 300 is inserted, X-ray fluoroscopy is used to check and confirm the position and depth of the cone 300; after confirming that it is appropriate, the positioning cone is pulled out and the pedicle screw is inserted along the channel. The entire surgical process does not need to frequently change surgical instruments, and can be completed directly at one time, which is simple, easy to operate, and highly safe.

[0067] In one embodiment, for example, Figure 1 , Figure 2 As shown, a gripping portion 110 is provided at the end of the holder 100 away from the mounting assembly 200, the length of the gripping portion 110 is set to L3, and the overall length of the holder 100 is set to L4, satisfying: 1 / 3L4≤L3≤1 / 4L4. The gripping portion 110 is provided on the holder 100, and the length of the gripping portion 110 is controlled, which can ensure the comfort of medical workers during surgery. The length of the gripping portion 110 is moderate, so that the medical workers can hold the holder 100 comfortably and stably, thereby controlling the cone 300 and performing precise operations. Secondly, the length of the gripping portion 110 is set to one-third to one-quarter of the overall length, ensuring that the hands and the gripping portion 110 of the medical workers will not block the surgical field of view during operation, further ensuring the comfort and accuracy of this embodiment when used.

[0068] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pedicle screw surgery cone, characterized in that: include: A holder (100), wherein a mounting assembly (200) is provided on the holder (100); The mounting assembly (200) comprises a fixing portion (210) and a limiting portion (220), wherein the limiting portion is arranged at an end of the holder (100), and the fixing portion (210) is arranged between the limiting portion (220) and the holder (100); A cone (300), the cone (300) comprising a cone head (310) and a cone rod (320), the cone head (310) being arranged at the end of the cone rod (320); The cone head (310) is provided with a fixing rod (311) and a limiting rod (312); the fixing rod (311) can be inserted into and fixed to the fixing portion (210); and the limiting rod (312) can be inserted into the limiting portion (220).

2. The pedicle surgery cone according to claim 1, characterized in that: The limiting portion (220) is configured as a limiting groove, the fixing portion (210) is configured as a fixing groove, and the fixing groove is arranged in the limiting groove; the axis of the limiting groove and the axis of the fixing groove both coincide with the axis of the holder (100).

3. The pedicle screw surgery cone according to claim 2, characterized in that: A first clamping piece is arranged in the fixing groove, and a second clamping piece is arranged on the fixing rod (311), and the first clamping piece and the second clamping piece can be relatively fixed.

4. The pedicle surgery cone according to claim 3, characterized in that: The first clamping member includes a flexible clamping ring, and the second clamping member includes a clamping ball. The radius of the flexible clamping ring is set to R1, and the radius of the clamping ball is set to R2, satisfying: R1<R2.

5. The pedicle surgery cone according to claim 4, characterized in that: The distance between the flexible clamping ring and the limiting groove is set to L1, and the length of the fixing rod (311) is set to L2, satisfying: L2+R2>L1>L2.

6. The pedicle surgery cone according to claim 1, characterized in that: A plurality of the cones (300) are provided, and the plurality of cones (300) can be mounted on the holder (100); a distinguishing portion (330) is provided on the cone (300), and the distinguishing portion (330) on each cone (300) has a different shape.

7. The pedicle surgery cone according to claim 6, characterized in that: The distinguishing portion (330) is arranged between the cone rod (320) and the cone head (310), and the distance between the cone rod (320) and the cone head (310) on each of the cones (300) is the same.

8. The pedicle screw surgery cone according to claim 1, characterized in that: A cone tip (340) is provided on the portion of the cone rod (320) away from the cone head (310), and the end of the cone tip (340) away from the cone rod (320) is smoothly arranged.

9. The pedicle surgery cone according to claim 8, characterized in that: A scale line (321) is provided on the cone rod (320) between the cone tip (340) and the cone head (310).

10. The pedicle surgery cone according to claim 1, characterized in that: A gripping portion (110) is provided on the end of the holder (100) away from the mounting assembly (200), the length of the gripping portion (110) is set to L3, and the overall length of the holder (100) is set to L4, satisfying the following: 1 / 3L4≤L3≤1 / 4L4.

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