Medical Fixation Rod Customized Devices

Abstract

An embodiment of the present invention proposes a customized instrument for a medical fixing rod. The customized instrument includes a fixing seat, a force-applying member and a rod cutting blade. The fixing seat is provided with an abutment portion; one end of the force-applying member is hinged to the fixing seat, and the force-applying member is provided with a hinge point, an extrusion portion and a hand-held portion, and the abutment portion and the extrusion portion are arranged relative to each other along a first direction to form a bending rod channel between the abutment portion and the extrusion portion, and the abutment portion and the extrusion portion are staggered in a second direction orthogonal to the first direction; the rod cutting blade is fixed to the fixing seat, and the rod cutting blade has a rod cutting hole staggered with the abutment portion, and the force-applying member has a clamping hole, in the initial state, the rod cutting hole and the clamping hole are arranged relative to each other along a third direction, and in the shearing state, the rod cutting hole and the clamping hole are staggered along the third direction. Therefore, the customized instrument is an integrated design of bending and cutting rods, which has the advantages of high integration, wide application scenarios and helping to improve work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a medical fixation rod customized device. Background Art

[0002] In traditional posterior screw-rod internal fixation surgeries such as spinal correction or intervertebral fusion, the rod cutting and bending steps after screw placement are usually performed by the surgeon using a common rod cutter and rod bender based on visual comparison or personal experience, and an assistant is required to use an additional rod holding tool to assist in holding. The rod making step requires the preparation of multiple tools, which is cumbersome to operate, and the rod bending cannot be precisely controlled. There may be problems such as rod making deviations that lead to incorrect twisting of the rod or the curvature not matching the spinal morphology.

[0003] At the same time, with the promotion of surgical planning and navigation-assisted technology, the operation of posterior spinal screw-rod surgery has gradually pursued personalization and precision. The surgeon can use surgical planning software to plan the appropriate pedicle screw placement and rod shape on the patient's bone image or model, output the corresponding screw rod specification and morphology data, and simulate the postoperative effect. Intraoperative navigation software can combine images and surgical instrument tracking information to reproduce the planned screw placement plan, but it cannot provide guidance on cutting and bending rods. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a medical fixation rod customization device. The medical fixation rod customization device is an integrated design of bending and cutting the rod, which has the advantages of high integration, wide application scenarios and helping to improve work efficiency.

[0005] The medical fixing rod customization device of the embodiment of the present invention comprises a fixing seat, a force applying member and a rod cutting blade. The fixing seat is provided with an abutment portion; one end of the force applying member is hinged to the fixing seat, and the force applying member is provided with a hinge point, an extrusion portion and a hand-held portion, the abutment portion and the extrusion portion are arranged opposite to each other along a first direction to form a rod bending channel between the abutment portion and the extrusion portion, and the abutment portion and the extrusion portion are staggered in a second direction orthogonal to the first direction;

[0006] The bar cutting blade head is fixed on the fixing seat, and has a bar cutting hole offset from the abutting portion. The bar cutting blade head is fitted with a part of the force applying member, and the force applying member has a clamping hole. In an initial state, the bar cutting hole and the clamping hole are arranged relative to each other along a third direction. In a shearing state, the bar cutting hole and the clamping hole are offset along the third direction so as to cut the fixed rod. The third direction, the first direction and the second direction are arranged orthogonally.

[0007] The medical fixed rod customized instrument of the embodiment of the present invention is provided with an extrusion part on the force-applying member at the same time to cooperate with the abutment part on the fixed seat, the abutment part and the extrusion part are arranged relative to each other along a first direction, and the abutment part and the extrusion part are arranged offset in a second direction orthogonal to the first direction, so that the fixed rod can be bent when the force-applying member is rotated. When the rod cutting operation is required, the rod cutting hole on the rod cutting blade is matched with the clamping hole on the force-applying member, so that the fixed rod can be adjusted during the rotation of the force-applying member. Thereby, the use scenarios of the medical fixed rod customized instrument are broadened and the integration of the customized instrument is improved. In some special scenarios, the rod cutting blade has a rod cutting hole that is offset with the abutment part, so that the bending and cutting operations of different fixed rods can be realized at the same time, which greatly improves the operation efficiency of the customized instrument.

[0008] Therefore, the medical fixation rod customization device of the embodiment of the present invention is an integrated design of bending and cutting the rod, which has the advantages of high integration, wide application scenarios and helping to improve work efficiency.

[0009] In some embodiments, the force-applying member includes a force-applying rod, a rotating plate and a force-applying shaft, one end of the force-applying rod is connected to the rotating plate or hinged to the fixed seat, the other end of the force-applying rod forms the hand-holding part, the rotating plate is rotatably disposed on the fixed seat, the force-applying shaft is disposed on the rotating plate, the hand-holding part is formed on the force-applying rod, the extrusion part is formed on the force-applying shaft, and the force-applying shaft is staggered with the abutment part so as to change the position of the force-applying shaft when the rotating plate rotates.

[0010] In some embodiments, the distance between the hand-held portion and the abutment portion is greater than the distance between the extrusion portion and the abutment portion, so that the relative position between the extrusion portion and the abutment portion can be changed when the force-applying member is rotated. The force-applying member is provided to apply force to the fixing rod, and the distance between the hand-held portion and the abutment portion is greater than the distance between the extrusion portion and the abutment portion, so that when the force-applying member is rotated by applying force, the power arm is greater than the resistance arm, so the applied power is less than the resistance. Therefore, this structure has the advantage of labor saving. Therefore, the medical fixing rod customization device of the embodiment of the present invention has the advantage of labor saving in operation.

[0011] In some embodiments, one end of the force rod is hinged to the fixed seat, and the rotating plate includes a first plate body and a second plate body arranged opposite to each other along a third direction, each of the first plate body and the second plate body is rotatably arranged on the fixed seat through a hinge axis, the bending rod channel is formed between the first plate body and the second plate body, the abutment portion is formed on the hinge axis, at least one of the first plate body and the second plate body has a limiting portion, and the force rod has a locking portion, which can be locked with the limiting portion to make the force rod rotate synchronously with the rotating plate, and both ends of the force axis are fixed on the first plate body and the second plate body, and the third direction, the first direction and the second direction are orthogonal to each other.

[0012] In some embodiments, the rotating plate and the force applying rod are both connected to the fixing seat via the same hinge shaft, the abutment portion is formed on the hinge shaft, and along the second direction, the hinge shaft is disposed between the force applying shaft and the hand-held portion.

[0013] In some embodiments, the medical fixation rod customized instrument also includes an end stop, which can abut against the force applying rod to limit the rotation of the force applying rod, each of the first plate body and the second plate body includes a connected plate body and a toothed plate body, the teeth of the toothed plate body form a plurality of the limiting portions, and one end of the force applying rod is provided with a retractable first and second ratchet teeth, the limiting portions are formed on the first and second ratchet teeth, and the first and second ratchet teeth can be engaged with the teeth of the toothed plate body of the first plate body and the toothed plate body of the second plate body one by one.

[0014] In some embodiments, the force rod includes a main rod body, a sleeve body and a sliding push rod, the end of the sliding push rod is a forked structure to form a first ratchet and a second ratchet, the main rod body and the sleeve body are connected, the sliding push rod is inserted into the sleeve body and the sliding push rod can slide relative to the sleeve body to make the ratchet engage or disengage with the tooth plate body.

[0015] In some embodiments, the customized medical fixation rod instrument further includes a rod holding handle, which is disposed on the stopper, the rod holding handle and the abutment portion are disposed opposite to each other in the second direction, the rod holding handle has a locked state and an unlocked state, the rod holding handle has a rod holding sleeve, the rod holding sleeve is colinear with the bending rod channel in the second direction, and the fixation rod is clamped in the rod holding sleeve.

[0016] In some embodiments, the stick holding handle includes a handle body and a handle extension detachably connected to the handle body.

[0017] In some embodiments, at least one of the first plate body and the second plate body has a perspective groove, the force rod has an identification line on the side opposite to the perspective groove, and the perspective groove has a marking scale to determine the engagement position of the force rod and the toothed plate body through the perspective groove according to the required bending degree of the fixing rod.

[0018] In some embodiments, at least one of the first plate and the second plate is provided with an arc-shaped angle measuring window for verifying the bending angle of the fixing rod.

[0019] In some embodiments, the force applying shaft is rotatably disposed on the first plate body and the second plate body.

[0020] In some embodiments, a limiting ring groove is provided on the force-applying shaft, and a bottom wall of the limiting ring groove forms the extrusion portion so as to limit the fixing rod.

[0021] In some embodiments, the fixed seat includes a base body, a support shaft seat and a hinge shaft, one end of the support shaft seat is arranged on the base body, the other end of the support shaft seat is connected to the hinge shaft, the hinge shaft passes through the rotating plate, and the abutment portion is formed on the hinge shaft.

[0022] In some embodiments, the hinge shaft includes a shaft body and a plurality of adjustment protrusions with different curvatures protruding outward along the shaft body. The hinge shaft is rotatably connected to the rotating plate, and the abutment portion is formed on the curvature adjustment protrusion. The plurality of curvature adjustment protrusions are arranged on the shaft body at intervals along the circumference of the shaft body.

[0023] In some embodiments, the customized medical fixation rod instrument further includes a rod holding handle, which is disposed on the stopper, the rod holding handle and the abutment portion are disposed opposite to each other in the second direction, the rod holding handle has a locked state and an unlocked state, the rod holding handle has a rod holding sleeve, the rod holding sleeve is colinear with the bending rod channel in the second direction, and the fixation rod is clamped in the rod holding sleeve.

[0024] In some embodiments, the fixing seat is provided with a length marking line extending along the second direction.

[0025] In some embodiments, the medical fixation rod customized instrument further includes a handle extension rod segment, the other end of the force application rod has a handle extension portion, and the handle extension rod segment is detachably connected to the handle extension portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a stereoscopic view of a medical fixation rod customization device according to an embodiment of the present invention during a rod bending process.

[0027] Figure 2 4 is a side view of a medical fixation rod customization device according to an embodiment of the present invention.

[0028] Figure 3 2 is another stereoscopic view of the medical fixation rod customization device according to an embodiment of the present invention.

[0029] Figure 4 yes Figure 3 Enlarged view at point A in the figure.

[0030] Figure 5 It is another stereoscopic view of the medical fixation rod customization device according to the embodiment of the present invention.

[0031] Figure 6 yes Figure 5 Enlarged view at B in the figure.

[0032] Figure 7 4 is a top view of a medical fixation rod customized device according to an embodiment of the present invention.

[0033] Figure 8 It is a three-dimensional diagram of a medical fixation rod customization device according to an embodiment of the present invention, omitting the rotating plate.

[0034] Fig. 9 It is another stereoscopic view of the medical fixation rod customization device according to an embodiment of the present invention, omitting the rotating plate.

[0035] Fig.10 Schematic diagram of a fixed rod, a hinge shaft and a rod holding handle according to an embodiment of the present invention.

[0036] Fig.11 It is a schematic diagram of the medical fixation rod customization device during the rod cutting process according to an embodiment of the present invention.

[0037] Reference numerals:

[0038] Medical fixation rod custom device 100; fixation rod 200;

[0039] Fixed seat 1; base body 11; length marking line 111;

[0040] Support shaft seat 12;

[0041] Articulated shaft 13; shaft body 131; adjusting protrusion 132; adjusting knob 133;

[0042] Force applying member 2;

[0043] Force application rod 21; main rod body 211; sleeve body 212; sliding push rod 213;

[0044] First ratchet tooth 2131; second ratchet tooth 2132; identification line 2133;

[0045] Rotating plate 22; first plate body 221; second plate body 222; plate body 2221; tooth plate body 2222; perspective groove 2223; marked scale 2224; clamping hole 2225; avoidance hole 2226; angle measuring window 2227;

[0046] Force applying shaft 23; Limiting ring groove 231;

[0047] Rod holding handle 3; Rod holding sleeve 31;

[0048] Cutting rod head 4; Cutting rod hole 41;

[0049] Stop platform 5. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0051] Reference below Figure 1-Figure 11 The medical fixation rod customization device 100 according to the embodiment of the present invention is described.

[0052] The medical fixing rod customized device 100 of the embodiment of the present invention comprises a fixing seat 1 and a force applying member 2. The fixing seat 1 has an abutment portion; one end of the force applying member 2 is hinged to the fixing seat 1, and the force applying member 2 has a hinge point, a pressing portion, and a hand-held portion, so that the relative position between the pressing portion and the abutment portion is changed when the force applying member 2 is rotated, and the abutment portion and the pressing portion are in a first direction (for example, Figure 1 The abutment portion and the extrusion portion are arranged relative to each other in a second direction (for example, the upper and lower directions shown in the figure) to form a bending rod channel between the abutment portion and the extrusion portion, and the abutment portion and the extrusion portion are arranged in a second direction (for example, Figure 1 The front-to-rear direction (as shown in FIG. 1 ) is staggered so as to change the relative position between the pressing portion and the abutting portion when the force applying member is rotated.

[0053] The medical fixed rod customized instrument of the embodiment of the present invention is provided with an extrusion part on the force member 2 and matched with the abutment part on the fixed seat 1, the abutment part and the extrusion part are arranged relative to each other along the first direction, and the abutment part and the extrusion part are arranged offset in the second direction orthogonal to the first direction. When the force member 2 is rotated, the fixing rod can be bent. When the rod cutting operation is required, the rod cutting hole on the rod cutting head 4 is matched with the clamping hole on the force member 2, and the fixing rod can be determined in the process of rotating the force member 2. It can be understood that the medical fixed rod customized instrument 100 is a medical instrument that integrates rod cutting and bending, thereby broadening the use scene of the medical fixed rod customized instrument and improving the integration of the customized instrument. In some special scenarios, the rod cutting head 4 has a rod cutting hole that is offset with the abutment part, which can realize the bending and cutting operations of different fixing rods at the same time, greatly improving the operation efficiency of the customized instrument.

[0054] Therefore, the medical fixation rod customization device of the embodiment of the present invention is an integrated design of bending and cutting the rod, which has the advantages of high integration, wide application scenarios and helping to improve work efficiency.

[0055] The distance between the hand-held portion and the abutment portion is greater than the distance between the extrusion portion and the abutment portion. Thus, a labor-saving lever structure can be formed. The medical fixed rod customized device 100 of the embodiment of the present invention applies force to the fixed rod 200 through the provided force-applying member 2, and the distance between the hand-held portion and the abutment portion is greater than the distance between the extrusion portion and the abutment portion, so that when the force-applying member 2 is applied to rotate, the power arm is greater than the resistance arm, so the applied power is less than the resistance. Thus, this structure has the advantage of labor-saving. Therefore, the medical fixed rod customized device 100 of the embodiment of the present invention has the advantage of labor-saving operation.

[0056] like Figures 1 to 7 As shown, the force-applying member 2 includes a force-applying rod 21, a rotating plate 22 and a force-applying shaft 23. One end of the force-applying rod 21 is connected to the rotating plate 22 or hinged to the fixed seat 1. The cutting rod head 4 is fitted with the rotating plate 22. The rotating plate 44 has a clamping hole 2225. The other end of the force-applying rod 21 forms a hand-holding portion. The rotating plate 22 is rotatably arranged on the fixed seat 1. The force-applying shaft 23 is arranged on the rotating plate 22. An extrusion portion is formed on the force-applying shaft 23. The force-applying shaft 23 is staggered with the abutment portion so that the position of the force-applying shaft 23 can be changed when the rotating plate 22 rotates to bend the fixed rod 200.

[0057] Specifically, one end of the force rod 21 is connected to the rotating plate 22 , and the other end of the force rod 21 forms a hand-held portion; or one end of the force rod 21 is hinged to the fixing seat 1 , and the force rod 21 is clamped to the fixing seat 1 .

[0058] The medical fixing rod customized device 100 of the embodiment of the present invention is characterized in that the force applying member 2 is divided into a force applying rod 21, a rotating plate 22 and a force applying shaft 23, one end of the force applying rod 21 is connected to the rotating plate 22 or hinged to the fixing seat 1, the other end of the force applying rod 21 forms a hand-held portion, the force applying shaft 23 is arranged on the rotating plate 22, and an extrusion portion is formed on the force applying shaft 23. Therefore, by arranging the force applying shaft 23 on the rotating plate 22, space can be provided for the installation of the force applying shaft 23, thereby improving the convenience of installation.

[0059] Optionally, a hand-held handle may be provided at the end of the force-applying rod 21 having the hand-held portion.

[0060] like Figures 1 to 7 As shown, one end of the force rod 21 is hinged to the fixed seat 1, and the rotating plate 22 includes a rotation direction (for example, Figure 1 The first plate body 221 and the second plate body 222 are relatively arranged in the left and right directions (as shown in the figure), each of the first plate body 221 and the second plate body 222 is rotatably arranged on the fixed seat 1 through the hinge shaft 13, a bending rod channel is formed between the first plate body 221 and the second plate body 222, an abutment portion is formed on the hinge shaft 13, at least one of the first plate body 221 and the second plate body 222 has a limiting portion, and the force applying rod 21 has a locking portion, which can be locked with the limiting portion so that the force applying rod 21 and the rotating plate 22 rotate synchronously, and both ends of the force applying shaft 23 are fixed on the first plate body 221 and the second plate body 222, and the third direction, the first direction and the second direction are orthogonal to each other. The cutting bar head 4 is fitted with one of the first plate 221 and the second plate 222 , and one of the first plate 221 and the second plate 222 has a clamping hole 2225 , and the other of the first plate 221 and the second plate 222 has an avoidance hole 2226 .

[0061] The medical fixing rod customization device 100 of the embodiment of the present invention is configured by dividing the rotating plate 22 into a first plate body 221 and a second plate body 222 which are arranged opposite to each other along a third direction, and each of the first plate body 221 and the second plate body 222 is rotatably arranged on the fixing seat 1 through a hinge shaft 13, and one end of the force rod 21 is hinged to the fixing seat 1, thereby realizing the independent rotation of the rotating plate 22 and the force rod 21. When bending the rod, the force rod 21 can be first controlled to engage with the rotating plate 22; and then the force rod 21 can be driven to drive the rotating plate 22 to rotate as a whole. Therefore, the medical fixing rod customization device 100 has the advantage of high convenience in operation.

[0062] In addition, by dividing the rotating plate 22 into a first plate body 221 and a second plate body 222 that are relatively arranged along the third direction, and forming a bending rod channel between the first plate body 221 and the second plate body 222, when force is applied to the fixed rod 200, it helps to ensure that the fixed rod 200 is subjected to uniform force in the third direction.

[0063] Specifically, the cutting bar head 4 is fitted with the first plate body 221, and the cutting bar head 4 has a cutting bar hole 41, and the first plate body 221 has a clamping hole 2225. In the initial state, the cutting bar hole 41 and the clamping hole 2225 are arranged relative to each other along the third direction. In the shearing state, the cutting bar hole 41 and the clamping hole 2225 are staggered along the third direction to fix the cutting of the rod 200. The second plate body 222 has an avoidance hole 2226, and the third direction, the first direction and the second direction are arranged orthogonally.

[0064] like Figure 1 and Figure 4 As shown, the rotating plate 22 and the force-applying rod 21 are both connected to the fixed seat 1 through the same hinge shaft 13, and an abutment portion is formed on the hinge shaft 13. In the second direction, the hinge shaft 13 is arranged between the force-applying shaft 23 and the hand-held portion. Thus, through the coaxially arranged rotating structure, it can be ensured that the rotating plate 22 and the force-applying rod 21 remain concentric during the rotation process, and no relative movement occurs, which has the advantage of good structural stability. In addition, the abutment portion is formed on the hinge shaft 13, so that when the rotating plate 22 and the force-applying rod 21 rotate, the distance between the force-applying point of the fixed rod 200 is guaranteed to remain unchanged, and then the bending point of the fixed rod 200 will not change due to the bending of the fixed rod 200. Thus, a fixed rod 200 with high bending accuracy can be obtained.

[0065] Specifically, Figure 1 As shown, the force rod 21 is substantially a pressing rod, and in the process of pressing the force rod 21 downward, the force shaft 23 can be driven to move upward, thereby playing a role in bending the fixing rod 200. Therefore, it is helpful to realize the convenience of operating the force rod 21.

[0066] Specifically, two ends of the hinge shaft 13 are connected to the first plate body 221 and the second plate body 222 respectively, and the hinge shaft 13 is rotatable relative to the first plate body 221 and the second plate body 222 .

[0067] like Figure 3 and Figure 4As shown, the medical fixation rod customized instrument 100 of the embodiment of the present invention also includes a stopper, which can abut against the force applying rod 21 to stop the force applying rod 21. Each of the first plate body 221 and the second plate body 222 includes a connected plate body 2221 and a toothed plate body 2222. The teeth of the toothed plate body 2222 form a limiting portion. A retractable first ratchet 2131 and a second ratchet 2132 are provided on one end of the force applying rod 21. A limiting portion is formed on the first ratchet 2131 and the second ratchet 2132. The first ratchet 2131 and the second ratchet 2132 can be engaged one-to-one with the teeth of the toothed plate body 2222 of the first plate body 221 and the toothed plate body 2222 of the second plate body 222. That is, the first ratchet teeth 2131 are engaged with the teeth of the toothed plate body 2222 of the first plate body 221 , and the second ratchet teeth 2132 are engaged with the teeth of the toothed plate body 2222 of the second plate body 222 .

[0068] The medical fixing rod customization device 100 of the embodiment of the present invention is that each of the first plate body 221 and the second plate body 222 is divided into a connected plate body 2221 and a tooth plate body 2222, and one end of the force rod 21 is provided with a retractable first ratchet 2131 and a second ratchet 2132 so as to make the force rod 21 engage or disengage with the rotating plate 22. Therefore, before bending the rod, the engagement position between the ratchet and the tooth plate body 2222 can be selected, and the force rod 21 can be pressed down to limit the force rod 21 using the end stopper, so that the fixing rod 200 with the corresponding curvature can be obtained to prevent the problem of excessive bending.

[0069] Furthermore, the plate body 2221 and the tooth plate body 2222 are integrally formed, and a tooth structure is provided on the outer periphery of the tooth plate body 2222 .

[0070] The medical fixing rod customized device 100 of the embodiment of the present invention also includes a rod holding handle 3, which is arranged on the end stopper, and the rod holding handle 3 and the abutment portion are arranged opposite to each other in the second direction, and the rod holding handle 3 has a locked state and an unlocked state, and the rod holding handle 3 has a rod holding sleeve 31, and the rod holding sleeve 31 is colinear with the bending rod channel in the second direction, and the fixing rod 200 is clamped in the rod holding sleeve 31.

[0071] The medical fixing rod customization device 100 of the embodiment of the present invention clamps the fixing rod 200 by means of the rod holding handle 3. Therefore, when bending the fixing rod 200, it is not necessary to hold the fixing rod 200 by hand, thereby improving the convenience of operation.

[0072] Further, the stopper may be a stop platform 5 .

[0073] like Figure 3 and Figure 4As shown, a limiting portion is formed on each of the first ratchet teeth 2131 and the second ratchet teeth 2132, and the first ratchet teeth 2131 and the second ratchet teeth 2132 can be correspondingly engaged with the teeth of the tooth plate body 2222 of the first plate body 221 and the tooth plate body 2222 of the second plate body 222. Therefore, the medical fixing rod customized device 100 has the advantage of good force uniformity.

[0074] like Figures 1 to 7 As shown, the force rod 21 includes a main rod body 211, a sleeve body 212 and a sliding push rod 213. The end of the sliding push rod 213 is a forked structure to form a first ratchet tooth 2131 and a second ratchet tooth 2132. The main rod body 211 and the sleeve body 212 are connected, and the sliding push rod 213 can be slidably passed through the sleeve body 212 so that the ratchet teeth are engaged or disengaged with the tooth plate body 2222.

[0075] The medical fixing rod customization device 100 of the embodiment of the present invention is characterized in that the force application rod 21 is divided into a main rod body 211, a sleeve body 212 and a sliding push rod 213, the sliding push rod 213 can be slidably inserted into the sleeve body 212, and the sleeve body 212 can limit the sliding formation of the sliding push rod 213, so that the ratchet teeth are engaged or disengaged with the tooth plate body 2222. Therefore, the medical fixing rod customization device 100 has the advantages of simple structure and high convenience in operation.

[0076] Furthermore, the end of the sliding push rod 213 unlocks the switch to control the movement and locking of the sliding push rod 213. Therefore, the medical fixing rod customized device 100 of the embodiment of the present invention has the advantages of good structural stability and high convenience in operation.

[0077] like Figure 1 , Figure 2 and Fig.11 As shown, at least one of the first plate body 221 and the second plate body 222 has a perspective groove 2223, the force rod 21 has an identification line 2133 on the side opposite to the perspective groove 2223, and the perspective groove 2223 has a marking scale 2224 to adjust the perspective groove 2223 according to the required bending degree of the fixing rod 200 to determine the engagement position of the force rod 21 and the tooth plate body 2222.

[0078] The medical fixing rod custom device 100 of the embodiment of the present invention has a perspective groove 2223 on at least one of the first plate 221 and the second plate 222, and the force rod 21 has a marking line 2133 on the side opposite to the perspective groove 2223, and the perspective groove 2223 has a marking scale 2224, and then before bending, the marking line 2133 and the marking scale 2224 can be set to align, and when the force rod 21 abuts against the end stopper, a fixing rod 200 with a corresponding curvature can be obtained. Therefore, the rod cutting and bending operations can be completed according to the ideal rod data (length, bending point, bending arc and bending angle) output by the surgical planning software, and then the rod parameters output by the surgical planning software can be accurately reproduced to achieve the best surgical adaptability.

[0079] Specifically, the first ratchet tooth 2131 and / or the second ratchet tooth 2132 are provided with a marking line 2133. The marking line 2133 may be a pointer engraved or drawn on the corresponding ratchet tooth.

[0080] The medical fixation rod customization device 100 of the embodiment of the present invention drives the sleeve body 212 to rotate when the force rod 21 is twisted, and the rotation position can be confirmed through the perspective slot 2223. When bending the rod, put the cut straight rod into the bending rod channel, push the rod lock switch to the locking position, and align the length pointer with the position scale of the bending rod point. The device is easy to use and can complete the rod customization operation without additional assistance, avoiding abnormal force or insufficient stability of the vertebral body caused by problems such as unstable internal fixation or interference, and achieving the best surgical adaptability.

[0081] Specifically, the first ratchet 2131 and / or the second ratchet 2132 are provided with a marking line 2133. The marking line 2133 can be a pointer. The first plate 221 has a perspective groove 2223, and the perspective groove 2223 has a marking scale 2224, so that the ratchet and the tooth plate 2222 can be determined through the perspective groove 2223 to obtain a fixed rod 200 with a determined bending degree.

[0082] like Figures 1 to 7 As shown, the force-applying shaft 23 is rotatably disposed on the first plate 221 and the second plate 222. When the fixing rod 200 is bent and formed, the hard friction force on the fixing rod 200 is reduced, thereby reducing the hard pulling on the fixing rod 200.

[0083] At least one of the first plate 221 and the second plate 222 is provided with an arc-shaped angle measuring window 2227 for verifying the bending angle of the fixing rod. After the rod is bent at a certain point, the ratchet disk is restored to the initial position (i.e., the arrow next to the angle measuring window 2227 points to the horizontal), and the position of the rod after bending can be observed through the angle measuring window 2227, and the actual angle of the rod can be read to determine whether there are problems such as rod rebound or insufficient bending caused by the material properties of the rod. The operator can decide whether to fine-tune or supplement the bending operation based on the angle measuring information. According to the planning parameters, the above operation can be repeated at multiple bending points in the order of the bending points, and the rod customization is finally completed. Therefore, the medical fixing rod customization device 100 of the embodiment of the present invention has the advantage of high convenience in operation.

[0084] like Figure 4 and Fig.11 As shown, the force-applying shaft 23 has a limiting ring groove 231, and the bottom wall of the limiting ring groove 231 forms an extrusion portion to guide and limit the fixing rod 200. In this way, the guiding property of the fixing rod 200 can be improved, and the problem of poor bending accuracy caused by displacement of the fixing rod 200 during the bending process can be prevented.

[0085] like Figures 1 to 7 As shown, the fixed seat 1 includes a base body 11, a support shaft seat 12 and a hinge shaft 13. One end of the support shaft seat 12 is arranged on the base body 11, and the other end of the support shaft seat 12 is connected to the hinge shaft 13. The hinge shaft 13 passes through the rotating plate 22, and an abutment portion is formed on the hinge shaft 13.

[0086] The medical fixing rod customized device 100 of the embodiment of the present invention divides the fixing seat 1 into a base body 11, a supporting shaft seat 12 and a hinge shaft 13. Thus, a space for avoiding and installing the rotation of the force applying member 2 can be provided.

[0087] like Figure 1 and Fig.10 As shown, the hinge shaft 13 includes a shaft body 131 and a plurality of adjustment protrusions 132 with different curvatures protruding outward along the shaft body 131. The hinge shaft 13 is rotatably connected to the rotating plate 22. An abutment portion is formed on the curvature adjustment protrusion 132. The plurality of curvature adjustment protrusions 132 are arranged on the shaft body 131 at intervals along the circumference of the shaft body 131.

[0088] The medical fixing rod customization device 100 of the embodiment of the present invention is provided by rotatably connecting the hinge shaft 13 to the rotating plate 22, and extending the curvature adjustment protrusion 132 outward from the outer periphery of the shaft body 131, and then twisting the curvature adjustment knob 133 to switch and select the desired curvature, thereby obtaining a fixing rod 200 with different chamfers. It can be understood that the medical fixing rod customization device 100 can simultaneously control the bending angle and the bending chamfer of the fixing rod 200. In order to obtain a fixing rod 200 with more chamfers and bending angle combinations. Thus, the applicability of the medical fixing rod customization device 100 is further improved.

[0089] For example, the curvature adjustment protrusion 132 has three curvatures, and the desired curvature (one of the three curvatures R1, R2, and R3) can be switched among the three curvatures of the bending rod.

[0090] Furthermore, the articulated shaft 13 further includes an adjusting knob 133, which is connected to the shaft body 131, and a chamfering reminder mark is provided on the rotating plate 22. Thus, the medical fixed rod custom device 100 improves the convenience of adjusting the curvature of the bending rod.

[0091] like Figures 1 to 7 As shown, the fixing seat 1 is provided with a length marking line 111 extending along the second direction. The rod cutting and bending operations are completed according to the ideal rod data (length, bending point, bending arc and bending angle) output by the surgical planning software, and the rod parameters output by the surgical planning software can be accurately reproduced. Figures 1 to 7 ,and Fig.11 As shown, the medical fixing rod customized instrument 100 of the embodiment of the present invention also includes a rod cutting blade head 4, which is arranged on the fixing seat 1, and has a rod cutting hole 41. The rod cutting blade head 4 is in contact with the rotating plate 22, and the rotating plate 22 has a clamping hole 2225. In the initial state, the rod cutting hole 41 and the clamping hole 2225 are arranged relative to each other along the third direction. In the shearing state, the rod cutting hole 41 and the clamping hole 2225 are staggered along the third direction so as to cut the fixing rod 200. The third direction, the first direction and the second direction are arranged orthogonally in pairs.

[0092] The medical fixation rod customization device 100 of the embodiment of the present invention can complete the rod cutting and bending operations according to the ideal rod body data (length, bending point, bending arc and bending angle) output by the surgical planning software. It can simultaneously replace a variety of traditional tools such as rod cutters, rod bending pliers, and rod holding pliers in spinal surgery, and accurately reproduce the planned rod structure and parameters. In addition, the medical fixation rod customization device 100 of the embodiment of the present invention improves surgical adaptability.

[0093] Furthermore, the medical fixation rod customized device 100 of the embodiment of the present invention further includes a handle extension rod section (not shown), and the other end of the force rod has a handle extension portion, and the handle extension rod section is detachably connected to the handle extension portion. Thus, the entire force rod can be extended, which has the advantage of labor saving.

[0094] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0095] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0096] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0098] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0099] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A medical fixation rod customization device, characterized in that: include: A fixing seat, wherein the fixing seat has an abutting portion; A force-applying member, one end of which is rotatably connected to the fixing seat, the force-applying member having a pressing portion and a hand-held portion, the abutting portion and the pressing portion being arranged opposite to each other along a first direction so as to form a bending rod channel between the abutting portion and the pressing portion, and the abutting portion and the pressing portion being staggered in a second direction orthogonal to the first direction so as to change the relative position between the pressing portion and the abutting portion when the force-applying member is rotated; A rod cutting blade head, wherein the rod cutting blade head is fixed on the fixing seat, the rod cutting blade head is provided with a rod cutting hole which is offset from the abutting portion, the rod cutting blade head is fitted with a part of the force applying member, the force applying member is provided with a clamping hole, in an initial state, the rod cutting hole and the clamping hole are arranged relative to each other along a third direction, in a shearing state, the rod cutting hole and the clamping hole are offset along the third direction so as to cut the fixed rod, and the third direction, the first direction and the second direction are arranged orthogonally; The force-applying member comprises a force-applying rod, a rotating plate and a force-applying shaft, one end of the force-applying rod is connected to the rotating plate or hinged to the fixed seat, the cutting bar head is fitted with the rotating plate, the rotating plate is provided with a clamping hole, the other end of the force-applying rod forms the hand-held portion, the rotating plate is rotatably arranged on the fixed seat, the force-applying shaft is arranged on the rotating plate, the extrusion portion is formed on the force-applying shaft, and the force-applying shaft is staggered with the abutting portion so as to change the position of the force-applying shaft when the rotating plate rotates; And / or, the distance between the hand-holding portion and the abutting portion is greater than the distance between the pressing portion and the abutting portion.

2. The medical fixation rod customization device according to claim 1, characterized in that: The cam is configured to connect the first and second cams, and the two cams are connected along the first and second cam faces respectively. The cams are connected along the first and second cam faces, the two cams being connected along the second and second cam faces respectively. And / or, the rotating plate and the force applying rod are both connected to the fixing seat via the same hinge shaft, the abutment portion is formed on the hinge shaft, and along the second direction, the hinge shaft is arranged between the force applying shaft and the hand-held portion.

3. The medical fixation rod customization device according to claim 2, characterized in that: It also includes a stopper, which can abut against the force applying rod to limit the rotation of the force applying rod. Each of the first plate body and the second plate body includes a connected plate body and a toothed plate body. The teeth of the toothed plate body form a plurality of the limiting portions. One end of the force applying rod is provided with a retractable first and second ratchet teeth. The limiting portions are formed on the first and second ratchet teeth. The first and second ratchet teeth can be engaged with the teeth of the toothed plate body of the first plate body and the toothed plate body of the second plate body one by one.

4. The medical fixation rod customization device according to claim 3, characterized in that: The force application rod comprises a main rod body, a sleeve body and a sliding push rod, the end of the sliding push rod is a forked structure to form a first ratchet and a second ratchet, the main rod body and the sleeve body are connected, the sliding push rod is inserted into the sleeve body and the sliding push rod can slide relative to the sleeve body to make the ratchet engage with or disengage from the tooth plate body; And / or, it also includes a rod holding handle, which is arranged on the end stopper, the rod holding handle and the abutment portion are arranged opposite to each other in the second direction, the rod holding handle has a locked state and an unlocked state, the rod holding handle has a rod holding sleeve, the rod holding sleeve and the bending rod channel are colinear in the second direction, and the fixing rod is clamped in the rod holding sleeve.

5. The medical fixation rod customization device according to claim 3, characterized in that: At least one of the first plate body and the second plate body has a perspective groove, the force-applying rod has a marking line on a side opposite to the perspective groove, and the perspective groove has a marking scale, so as to determine the engagement position of the force-applying rod and the toothed plate body through the perspective groove according to the required bending degree of the fixing rod; And / or, at least one of the first plate body and the second plate body is provided with an arc-shaped angle measuring window for checking the bending angle of the fixing rod.

6. The medical fixation rod customization device according to claim 2, characterized in that: The force applying shaft is rotatably arranged on the first plate body and the second plate body; And / or, the force-applying shaft is provided with a limiting ring groove, and the bottom wall of the limiting ring groove forms the extrusion portion so as to limit the fixing rod.

7. The medical fixation rod customization device according to claim 1, characterized in that: The fixed seat includes a base body, a support shaft seat and a hinge shaft, one end of the support shaft seat is arranged on the base body, the other end of the support shaft seat is connected to the hinge shaft, the hinge shaft passes through the rotating plate, and the abutment portion is formed on the hinge shaft.

8. The medical fixation rod customization device according to claim 7, characterized in that: The hinge shaft comprises a shaft body and a plurality of adjusting protrusions with different curvatures protruding outward from the shaft body, the hinge shaft is rotatably connected to the rotating plate, the abutment portion is formed on the curvature adjusting protrusion, and the plurality of adjusting protrusions with different curvatures are arranged on the shaft body at intervals along the circumference of the shaft body; And / or, the fixing seat is provided with a length marking line extending along the second direction.

9. The medical fixation rod customization device according to claim 1, characterized in that: It also includes a handle extension rod section, the other end of the force application rod is provided with a handle extension part, and the handle extension rod section is detachably connected to the handle extension part.

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