Osteotomy guide device

Abstract

The application provides an osteotomy guiding device, which comprises a measuring rod, a measuring scale arranged on the measuring rod, an osteotomy guiding rod adjustably arranged on the measuring rod, the osteotomy guiding rod being arranged at an angle with the measuring rod and having an osteotomy guiding groove, and a fixing structure arranged on the measuring rod to fix the position of the measuring rod. The technical scheme of the application can effectively solve the problems of uneven osteotomy surface and poor parallelism of multiple osteotomy surfaces after osteotomy by using the surgical tools in the related art.

Description

Technical Field

[0001] This invention relates to the field of auxiliary osteotomy tools, and more specifically, to an osteotomy guide device. Background Technology

[0002] In medicine, some cases often require osteotomy to restore normal function. For example, congenital hip dislocation (DDH) is a common disease that requires osteotomy. Its symptoms are that the femoral head loses its normal relationship with the acetabulum within the joint capsule, resulting in abnormal development before and after birth.

[0003] Currently, surgical treatment for DDH typically employs a posterior approach, involving femoral rotation and shortening osteotomy. Specifically, such as... Figure 16 As shown, first, a segment of bone is cut off from the femur, then the two ends of the femur are joined together, and finally the cut bone segment is split in two along the axis to form two bone pieces. The two bone pieces are wrapped around the joint of the femur and then sutured to make them firmly wrapped around the joined femur.

[0004] Because the two parts of the femur need to be joined, the flatness of the osteotomy surface must be ensured. Current surgical tools have poor stability, making it difficult for surgeons to create a flat and parallel osteotomy surface. This can lead to bending after the two femoral segments are joined, affecting the patient's ability to walk post-operatively. Other osteotomy treatments face similar problems. Summary of the Invention

[0005] The main objective of this invention is to provide an osteotomy guide device to solve the problems of uneven osteotomy surfaces and poor parallelism of multiple osteotomy surfaces after osteotomy using surgical tools in related technologies.

[0006] To achieve the above objectives, the present invention provides an osteotomy guide device comprising: a measuring rod having measuring scales; an osteotomy guide rod adjustablely disposed on the measuring rod, the osteotomy guide rod being angled to the measuring rod and having an osteotomy guide groove; and a fixing structure disposed on the measuring rod to fix the position of the measuring rod.

[0007] Furthermore, the osteotomy guide rod includes a sleeve portion and a guide rod body disposed on the side wall of the sleeve portion. An osteotomy guide groove is disposed on the guide rod body. A measuring rod passes through the inner hole of the sleeve portion. A first mounting hole communicating with the inner hole of the sleeve portion is also provided on the side wall of the sleeve portion. The osteotomy guide device also includes: a first fastener, which passes through the first mounting hole and abuts against the measuring rod.

[0008] Furthermore, the side wall of the measuring rod has a top surface, the inner wall of the sleeve has an anti-rotation plane that fits the top surface, and the measuring scale is set on the top surface.

[0009] Furthermore, the osteotomy guide groove extends along the length of the guide rod, and the osteotomy guide rod is bent or flexed and has abutting protrusion.

[0010] Furthermore, the osteotomy guide groove includes two groove sidewalls arranged opposite to each other and a groove end wall disposed between the two groove sidewalls and opposite to the groove opening of the osteotomy guide groove. The groove end wall and the top surface have a first included angle α, which is between 40° and 50°.

[0011] Furthermore, the osteotomy guide groove is bent along the length of the osteotomy guide rod.

[0012] Furthermore, the fixing structure includes clamps, which are detachably connected to the measuring rod. The clamps include a first clamp rod and a second clamp rod that are hinged together. The first clamp rod includes a first gripping section and a first clamping section having a second included angle β with the first gripping section. The first clamping section is provided with a first arc-shaped clamping groove. The second clamp rod includes a second gripping section and a second clamping section having a third included angle γ with the second gripping section. The second clamping section is provided with a second arc-shaped clamping groove. A clamping space is formed between the first arc-shaped clamping groove and the second arc-shaped clamping groove.

[0013] Furthermore, the second included angle β is between 80° and 100°; the third included angle γ is between 100° and 120°.

[0014] Furthermore, the osteotomy guide device also includes: a connecting block, a second sliding hole at the first end of the connecting block, the connecting block being sleeved on the measuring rod through the second sliding hole, a second mounting hole at the second end of the connecting block, a third mounting hole on the second clamping section, and a second fastener passing through the second mounting hole and the third mounting hole.

[0015] Furthermore, the second clamping section is provided with a fourth mounting hole, and the clamping pliers also include a third fastener passing through the fourth mounting hole. The third fastener has a limiting pin passing through the rod section located in the second arc-shaped clamping groove. The length of the limiting pin is greater than the diameter of the fourth mounting hole.

[0016] Furthermore, the clamping forceps include multiple clamps, with the first clamp bar and the second clamp bar hinged together by a hinge pin. The hinge pin is provided with a pin hole arranged in the axial direction of the hinge pin. The osteotomy guide device also includes a positioning link, which passes through the pin holes of the multiple clamping forceps.

[0017] Furthermore, the positioning link includes a link body and a holding part disposed at one end of the link body, the holding part including multiple plates arranged at an angle.

[0018] Furthermore, the fixing structure also includes a fixing rod, and a snap-fit ​​structure is provided between the fixing rod and the measuring rod, and the fixing rod and the measuring rod are connected by the snap-fit ​​structure.

[0019] Furthermore, the snap-fit ​​structure includes a snap-fit ​​hole on the measuring rod and a snap-fit ​​protrusion on the fixing rod. The snap-fit ​​hole includes an insertion hole that engages with the fixing rod and a snap-fit ​​hole on the wall of the insertion hole. The snap-fit ​​protrusion is movably provided on the side wall of the fixing rod. The snap-fit ​​protrusion has a clearance position inside the fixing rod and a snap-fit ​​position protruding from the side wall of the fixing rod. When the snap-fit ​​protrusion is in the snap-fit ​​position, the snap-fit ​​protrusion can extend into the snap-fit ​​hole to fix the fixing rod on the measuring rod.

[0020] Furthermore, the fixing rod includes a rod sleeve, a rod core passing through the rod sleeve, and a reset member disposed between the rod sleeve and the rod core. The rod sleeve is provided with a limiting hole, and the locking protrusion is a ball passing through the rod sleeve. The ball is limited and engaged with the wall of the limiting hole and can extend out of the limiting hole or retract into the limiting hole. The rod core is movably disposed in the rod sleeve along the axial direction of the rod sleeve. The side wall of the rod core has a receiving groove. When the receiving groove is opposite to the ball, the ball can retract to the avoidance position. When the receiving groove is misaligned with the ball, the side wall of the rod core pushes the ball to the locking position.

[0021] Furthermore, the inner hole of the sleeve includes a first hole segment and a second hole segment communicating with the first hole segment. The diameter of the first hole segment is larger than the diameter of the second hole segment. A stepped surface is formed between the first hole segment and the second hole segment. The rod core includes a push rod and an operating cap disposed at one end of the push rod. A reset member is disposed between the stepped surface and the operating cap. The operating cap is also provided with a strip hole. The fixing rod also includes a positioning pin that passes through the sleeve and extends into the strip hole.

[0022] Furthermore, an anti-rotation plane is provided on the side wall of the insertion end of the fixing rod, and a mating plane is provided on the wall of the insertion hole to prevent rotation with the anti-rotation plane.

[0023] According to the technical solution of this invention, the osteotomy guide device includes a measuring rod with measuring scales for easy measurement of the osteotomy length. An osteotomy guide rod is provided on the measuring rod, adjustablely positioned so that the surgeon can adjust its position according to the actual osteotomy length. An osteotomy guide groove is provided on the osteotomy guide rod, guiding the cutting direction of the osteotomy saw blade and ensuring the parallelism of multiple osteotomy planes. Furthermore, the measuring rod of this application also has a fixing structure, which fixes the position of the measuring rod, reducing the probability of movement during osteotomy and consequently reducing the probability of relative displacement between the osteotomy guide rod and the patient's bone. This ensures the stability of the osteotomy guide device during osteotomy, thereby improving the flatness and parallelism of the osteotomy planes. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the osteotomy guide device according to the present invention is shown;

[0026] Figure 2 It shows Figure 1 A three-dimensional structural diagram of the measuring rod and the osteotomy guide rod of the osteotomy guide device;

[0027] Figure 3 It shows Figure 2 Top view of the measuring rod and osteotomy guide rod;

[0028] Figure 4 It shows Figure 3 A sectional view of the measuring rod and the osteotomy guide rod along the AA direction;

[0029] Figure 5 It shows Figure 3 A schematic diagram of another embodiment of the measuring rod and the osteotomy guide groove of the osteotomy guide rod;

[0030] Figure 6 It shows Figure 1 A three-dimensional structural diagram of the clamping forceps of the osteotomy guide device;

[0031] Figure 7 It shows Figure 6 An enlarged structural diagram of point B of the clamping forceps;

[0032] Figure 8 It shows Figure 7 Side view of the clamping forceps;

[0033] Figure 9 It shows Figure 1 A three-dimensional structural diagram of the positioning link of the osteotomy guide device;

[0034] Figure 10 A three-dimensional structural schematic diagram of the osteotomy guide device according to Embodiment 2 in use is shown;

[0035] Figure 11 It shows Figure 10 A three-dimensional structural diagram of the osteotomy guide device;

[0036] Figure 12 It shows Figure 11 Front view of the osteotomy guide device;

[0037] Figure 13 It shows Figure 12 An enlarged structural diagram of the osteotomy guide device at point C;

[0038] Figure 14 It shows Figure 10 A three-dimensional structural diagram of the fixing rod of the osteotomy guide device;

[0039] Figure 15 It shows Figure 14 A sectional view of the fixing rod;

[0040] Figure 16 A schematic diagram of the osteotomy procedure for DDH surgery in related technologies is shown.

[0041] The above figures include the following reference numerals:

[0042] 10. Measuring rod; 11. Top surface; 111. Measuring scale; 20. Osteotomy guide rod; 21. Sleeve part; 211. First mounting hole; 22. Guide rod body; 221. Osteotomy guide groove; 2211. Groove side wall; 2212. Groove end wall; 23. Abutting protrusion; 30. Fixing structure; 40. First fastener; 50. Clamping clamp; 51. Spring; 52. Rack; 53. Snap-fit ​​protrusion; 6 0. First clamping bar; 61. First gripping section; 62. First clamping section; 63. First arc-shaped clamping groove; 64. Hinge pin; 641. Pin hole; 70. Second clamping bar; 71. Second gripping section; 72. Second clamping section; 721. Third mounting hole; 722. Fourth mounting hole; 73. Second arc-shaped clamping groove; 80. Connecting block; 81. Second sliding hole; 82. Second mounting hole; 90. Second fastener; 100. Third fastener; 101. Limiting pin; 110. Positioning link; 1101. Linkage body; 1102. Holding part; 120. Fixing rod; 130. Snap-fit ​​structure; 131. Snap-fit ​​hole; 1311. Insertion hole; 1312. Snap-fit ​​hole; 132. Snap-fit ​​protrusion; 140. Rod sleeve; 141. Limiting hole; 142. Stepped surface; 143. Positioning pin; 144. Anti-rotation plane; 150. Rod core; 151. Push rod; 1511. Receiving groove; 152. Operating cap; 1521. Strip hole; 160. Reset part; 170. Patient's skeleton. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0046] like Figure 1 As shown, the osteotomy guide device of Embodiment 1 includes: a measuring rod 10, an osteotomy guide rod 20, and a fixing structure 30. The measuring rod 10 is provided with a measuring scale 111; the osteotomy guide rod 20 is adjustablely mounted on the measuring rod 10, and is angled to the measuring rod 10 and has an osteotomy guide groove 221; the fixing structure 30 is mounted on the measuring rod 10 to fix the position of the measuring rod 10.

[0047] Applying the technical solution of this embodiment, the osteotomy guide device includes a measuring rod 10 with measuring scale 111 for easy measurement of the osteotomy length. An osteotomy guide rod 20 is provided on the measuring rod 10, adjustablely positioned so that the surgeon can adjust its position according to the actual osteotomy length. An osteotomy guide groove 221 is provided on the osteotomy guide rod 20, guiding the cutting direction of the osteotomy saw blade and ensuring the parallelism of multiple osteotomy planes. Furthermore, the measuring rod 10 of this application also includes a fixing structure 30, which fixes the position of the measuring rod 10, reducing the probability of movement during osteotomy and ensuring the stability of the osteotomy guide device, thereby improving the flatness and parallelism of the osteotomy planes.

[0048] It should be noted that the measuring rod 10 is set perpendicular to the osteotomy guide rod 20.

[0049] Specifically, such as Figure 1 and Figure 2 As shown, the osteotomy guide rod 20 may include multiple rods. When multiple osteotomy surfaces need to be cut, multiple osteotomy guide rods 20 can be installed on the measuring rod 10, thereby facilitating the guidance of the osteotomy saw blade in the osteotomy direction during multiple osteotomies. Of course, in other embodiments, only one osteotomy guide rod 20 may be provided. After the first osteotomy is completed, the position of the osteotomy guide rod 20 is adjusted before the second osteotomy is performed.

[0050] To improve the connection stability between the osteotomy guide rod 20 and the measuring rod 10, and to reduce the probability of relative movement between the osteotomy guide rod 20 and the measuring rod 10 during osteotomy, such as... Figures 2 to 4As shown, in Embodiment 1, the osteotomy guide rod 20 includes a sleeve portion 21 and a guide rod body 22 disposed on the side wall of the sleeve portion 21. An osteotomy guide groove 221 is disposed in the guide rod body 22. The measuring rod 10 passes through the inner hole of the sleeve portion 21. A first mounting hole 211 communicating with the inner hole of the sleeve portion 21 is also provided on the side wall of the sleeve portion 21. The osteotomy guide device also includes a first fastener 40, which passes through the first mounting hole 211 and abuts against the measuring rod 10. In the above structure, the osteotomy guide rod 20 includes a sleeve portion 21, which is sleeved on the measuring rod 10 and allows for position adjustment of the osteotomy guide rod 20 on the measuring rod 10. A first mounting hole 211 is provided on the side wall of the sleeve portion 21. A first fastener 40 passes through the first mounting hole 211 and abuts against the measuring rod 10. The first fastener 40 is a fastening screw. An internal thread is provided in the first mounting hole 211 to mate with the fastening screw. The bottom of the fastening screw is abutting surface. After the fastening screw is tightened, it presses against the measuring rod 10 through the abutting surface, thus achieving a stable connection between the osteotomy guide rod 20 and the measuring rod 10. The fastening screw and internal thread mate easily and improve the stability and reliability of the fastening connection between the osteotomy guide rod 20 and the measuring rod 10.

[0051] like Figure 2 and Figure 4 As shown, in Embodiment 1, the side wall of the measuring rod 10 has a top surface 11, and the inner wall of the sleeve portion 21 has an anti-rotation plane that engages with the top surface 11. The measuring scale 111 is disposed on the top surface 11. In the above structure, the top surface 11 of the measuring rod 10 can engage with the inner wall of the sleeve portion 21 to prevent rotation, thereby fixing the angle between the osteotomy guide rod 20 and the measuring rod 10. When multiple osteotomy guide rods 20 are provided on the measuring rod 10, the consistency of the extension direction of the multiple osteotomy guide rods 20 can be ensured, thereby improving the parallelism of the multiple osteotomy planes.

[0052] Specifically, such as Figure 4 As shown, in Embodiment 1, the cross-section of the measuring rod 10 is a polygonal structure, and the inner hole of the sleeve portion 21 is fitted with the cross-section of the measuring rod 10 to achieve an anti-rotation fit between the osteotomy guide rod 20 and the measuring rod 10.

[0053] like Figure 4As shown, in Embodiment 1, the osteotomy guide groove 221 extends along the length of the guide rod 22, and the osteotomy guide rod 20 is bent or flexed and has abutting protrusion 23. In the above structure, the abutting protrusion 23 of the osteotomy guide rod 20 can abut against the patient's bone, minimizing the distance between the osteotomy guide groove 221 and the patient's bone 170. Since the osteotomy saw blade will oscillate during operation, the farther the osteotomy saw blade moves after passing through the osteotomy guide groove 221, the greater its oscillation range. Therefore, making the distance between the osteotomy guide groove 221 and the patient's bone 170 closer is more conducive to reducing the oscillation of the osteotomy saw blade during operation, thereby improving the flatness of the osteotomy plane.

[0054] It should be noted that the distance between the aforementioned abutting protrusion 23 and the top surface 11 is greater than the distance between the portion of the osteotomy guide rod 20 excluding the abutting protrusion 23 and the top surface 11.

[0055] like Figure 4 As shown, in Embodiment 1, the osteotomy guide groove 221 includes two groove sidewalls 2211 disposed opposite to each other and a groove end wall 2212 disposed between the two groove sidewalls 2211 and opposite to the groove opening of the osteotomy guide groove 221. The groove end wall 2212 and the top surface 11 have a first included angle α, which is between 40° and 50°. In the above structure, the groove end wall 2212 is positioned along... Figure 1 Compared to the vertical extension, having a first included angle α between the groove end wall 2212 and the top surface 11 increases the osteotomy range of the osteotomy saw blade, thereby improving the convenience of osteotomy for the surgeon. However, if the first included angle α is too small, the distance between the groove end wall 2212 of the osteotomy guide groove 221 and the inner hole of the sleeve portion 21 will be too close, affecting the strength of the connection between the sleeve portion 21 and the guide rod body 22, causing the guide rod body 22 to be prone to breakage or deformation. If the first included angle α is too large, it will affect the osteotomy range of the osteotomy saw blade. The first included angle α can be any value between 40° and 50°, preferably 40°, 42°, 45°, 47°, or 50°.

[0056] like Figure 5 As shown, in Embodiment 1, the osteotomy guide groove 221 can also be bent along the length of the osteotomy guide rod 20. This structure increases the area of ​​the osteotomy plane, which is beneficial for the bone fusion effect after the two femoral segments are joined.

[0057] like Figure 6 and Figure 8As shown, in Embodiment 1, the fixing structure 30 includes a clamping clamp 50, which is detachably connected to the measuring rod 10. The clamping clamp 50 includes a first clamping bar 60 and a second clamping bar 70 hinged together. The first clamping bar 60 includes a first gripping section 61 and a first clamping section 62 with a second included angle β between it and the first gripping section 61. The first clamping section 62 is provided with a first arc-shaped clamping groove 63. The second clamping bar 70 includes a second gripping section 71 and a second clamping section 72 with a third included angle γ between it and the second gripping section 71. The second clamping section 72 is provided with a second arc-shaped clamping groove 73. A clamping space is formed between the first arc-shaped clamping groove 63 and the second arc-shaped clamping groove 73. This structure allows the clamping clamp 50 to be bent, which can avoid the muscle tissue of the patient's wound as much as possible. On the other hand, the above-mentioned arrangement allows the osteotomy guide device to make full use of the longitudinal space above the patient's wound, which is beneficial to reducing the wound area, improving the patient's postoperative experience, and enabling the patient to recover better after surgery.

[0058] It should be noted that the clamping forceps 50 and the osteotomy guide rod 20 of this application are set separately. Compared with setting the clamping forceps and the osteotomy guide rod as an integral part, this setting can ensure that the shape and structure of the osteotomy guide rod 20 and the clamping forceps 50 do not interfere with each other, which helps to better realize their respective functions.

[0059] Specifically, such as Figure 6 and Figure 8 As shown, in Embodiment 1, the second included angle β is the angle between the gripping surface of the first clamping segment 62 and the plane containing the port of the first arc-shaped clamping groove 63, and the second included angle β is between 80° and 100°. The third included angle γ is the angle between the gripping surface of the second clamping segment 72 and the plane containing the port of the second arc-shaped clamping groove 73, and the third included angle γ is between 100° and 120°. The above structure allows the bending radius of the clamping forceps 50 to avoid the muscle tissue of the patient's wound as much as possible, which helps to reduce the wound area, improve the patient's postoperative experience, and promote better postoperative recovery.

[0060] Specifically, the second included angle β can be any value between 80° and 100°. Preferably, the second included angle β is 80°, 85°, 90°, 95°, or 100°. The third included angle γ can be any value between 100° and 120°. Preferably, the third included angle γ is 100°, 105°, 110°, 115°, or 120°.

[0061] like Figure 2 and Figure 6As shown, in Embodiment 1, the osteotomy guide device further includes a connecting block 80. The first end of the connecting block 80 is provided with a second sliding hole 81. The connecting block 80 is sleeved onto the measuring rod 10 through the second sliding hole 81. The second end of the connecting block 80 is provided with a second mounting hole 82. The second clamping section 72 is provided with a third mounting hole 721. The osteotomy guide device also includes a second fastener 90 passing through the second mounting hole 82 and the third mounting hole 721. In the above structure, the clamping clamp 50 and the measuring rod 10 are connected and fixed through the connecting block 80. The clamping clamp 50 can clamp the patient's bone, that is, the clamping clamp 50 can be fixed to the patient's bone 170 by clamping. Simultaneously, the clamping clamp 50 and the measuring rod 10 are fixed through the connecting block 80, thus allowing the measuring rod 10 to be fixed in a relative position to the patient's bone through the clamping clamp 50. The clamping clamp 50 can be stably clamped onto the patient's bone, thereby ensuring the stable fixation of the osteotomy guide rod 20.

[0062] It should be noted that, as Figure 1 As shown, the clamping clamp 50 is equipped with a locking structure, which ensures the stability of the clamping clamp 50 in clamping the bone. Specifically, the locking structure includes a spring piece 51 provided on the first clamping bar 60 and the second clamping bar 70, a rack bar 52 hinged to the end of the first clamping bar 60 away from the first clamping section 62, and a locking protrusion 53 provided on the end of the second clamping bar 70 away from the second clamping section 72. The locking protrusion 53 can engage with the rack on the rack bar 52. When it is necessary to lock the clamp 50, the first clamp bar 60 and the second clamp bar 70 can be pinched together, and the rack bar 52 can be locked in place with the locking protrusion 53. At this time, the spring piece 51 between the first clamp bar 60 and the second clamp bar 70 can exert a force that moves away from each other under the action of elastic restoring force. The first clamp bar 60 and the second clamp bar 70 are locked in place by the locking action of the rack bar 52 and the locking protrusion 53, thereby locking the opening degree of the clamp jaws of the clamp 50, so that the clamp 50 is clamped on the patient's bone, and a stable connection is achieved between the clamp 50 and the patient's bone 170.

[0063] like Figure 6 and Figure 7As shown in Embodiment 1, the second clamping section 72 is provided with a fourth mounting hole 722. The clamping forceps 50 also includes a third fastener 100 passing through the fourth mounting hole 722. A limiting pin 101 passes through the rod section of the third fastener 100 located in the second arc-shaped clamping groove 73. The length of the limiting pin 101 is greater than the diameter of the fourth mounting hole 722. In the above structure, the third fastener 100 is a fastening screw. Tightening the fastening screw to make it abut against the patient's bone can make the clamping forceps 50 more securely connected to the patient's bone, further improving the stability of the connection between the clamping forceps 50 and the patient's bone 170. In addition, the limiting pin 101 also passes through the screw shank of the fastening screw. The length of the limiting pin 101 is greater than the diameter of the fourth mounting hole 722. Therefore, the fastening screw will not fall off the clamping forceps 50, which helps to improve the doctor's operating efficiency.

[0064] like Figure 1 , Figure 8 and Figure 9 As shown, in Embodiment 1, the clamping forceps 50 includes multiple clamps. The first clamping bar 60 and the second clamping bar 70 are hinged together by a hinge pin 64. The hinge pin 64 is provided with a pin hole 641 arranged along the axial direction of the hinge pin 64. The osteotomy guide device also includes a positioning link 110, which passes through the pin holes 641 of the multiple clamping forceps 50. In the above structure, the positioning link 110 can ensure the coaxiality of the multiple clamping forceps 50. In addition, the positioning link 110 can also limit the clamping forceps 50. Specifically, when two adjacent clamping forceps 50 twist (not slide) in a direction that moves closer to or further away from each other, the positioning link 110 can limit the hole wall of the pin hole 641 of the clamping forceps 50, thereby preventing the clamping forceps 50 from twisting and ensuring the stability of the connection between the clamping forceps 50 and the patient's bone 170.

[0065] like Figure 9 As shown, in Embodiment 1, the positioning link 110 includes a link body 1101 and a holding part 1102 disposed at one end of the link body 1101. The holding part 1102 includes multiple plates arranged at an angle. In the above structure, the holding part 1102 facilitates the operation of the positioning link 110 by the doctor. In addition, the holding part 1102 includes multiple plates arranged at an angle, which can set a predetermined angle between two adjacent plates. During surgery, the doctor can use the holding part 1102 as a measuring tool for angles. The above arrangement improves the functionality of the positioning link 110.

[0066] like Figures 10 to 12 As shown, this application also provides a second embodiment of the osteotomy guide device. The difference between embodiment two and embodiment one is that the specific structure of the fixation structure 30 is different, such as... Figure 1As shown, the fixing structure 30 includes a fixing rod 120, and a snap-fit ​​structure 130 is provided between the fixing rod 120 and the measuring rod 10, connecting the fixing rod 120 and the measuring rod 10 through the snap-fit ​​structure 130. In the above structure, one end of the fixing rod 120 is snap-fitted to the measuring rod 10, and the other end is held by an external holding mechanism or manually held by the doctor to fix the position of the fixing rod 120, thereby fixing the positions of the measuring rod 10 and the osteotomy guide rod 20. The advantages of the fixing rod 120 are its simple structure and small size, which can further reduce contact with the patient's muscle tissue, thereby helping to reduce the size of the patient's wound and improve the postoperative recovery effect. In addition, the snap-fit ​​connection between the fixing rod 120 and the measuring rod 10 makes it easy to assemble and disassemble, which helps to reduce the difficulty of assembling and disassembling the osteotomy guide device.

[0067] like Figure 12 and Figure 13 As shown, in Embodiment 2, the snap-fit ​​structure 130 includes a snap-fit ​​hole 131 on the measuring rod 10 and a snap-fit ​​protrusion 132 on the fixing rod 120. The snap-fit ​​hole 131 includes an insertion hole 1311 that engages with the fixing rod 120 and a snap-fit ​​hole 1312 on the wall of the insertion hole 1311. The snap-fit ​​protrusion 132 is movably provided on the side wall of the fixing rod 120. The snap-fit ​​protrusion 132 has a clearance position inside the fixing rod 120 and a snap-fit ​​position protruding from the side wall of the fixing rod 120. When the snap-fit ​​protrusion 132 is in the snap-fit ​​position, the snap-fit ​​protrusion 132 can extend into the snap-fit ​​hole 1312 to fix the fixing rod 120 on the measuring rod 10. In the above structure, the locking hole 131 includes an insertion hole 1311 for the fixing rod 120 to be inserted into, and a locking hole 1312 provided on the wall of the insertion hole 1311. The insertion and locking mechanisms improve the connection stability between the fixing rod 120 and the measuring rod 10, thereby reducing the probability of the measuring rod 10 detaching from the fixing rod 120 during surgery. Furthermore, when the locking protrusion 132 is in the locking position, it can extend into the locking hole 1312. When the measuring rod 10 tends to detach from the fixing rod 120, the wall of the locking hole 1312 can limit the locking protrusion 132, thereby preventing the fixing rod 120 from detaching from the measuring rod 10. This structure achieves a stable locking connection between the fixing rod 120 and the measuring rod 10.

[0068] like Figures 12 to 15As shown, in Embodiment 2, the fixing rod 120 includes a rod sleeve 140, a rod core 150 passing through the rod sleeve 140, and a reset member 160 disposed between the rod sleeve 140 and the rod core 150. The rod sleeve 140 is provided with a limiting hole 141. The snap-fit ​​protrusion 132 is a ball passing through the rod sleeve 140. The ball is limited and engaged with the wall of the limiting hole 141 and can extend out of the limiting hole 141 or retract into the limiting hole 141. The rod core 150 is movably disposed in the rod sleeve 140 along the axial direction of the rod sleeve 140. The side wall of the rod core 150 has a receiving groove 1511. When the receiving groove 1511 is opposite to the ball, the ball can retract to the avoidance position. When the receiving groove 1511 is misaligned with the ball, the side wall of the rod core 150 pushes the ball to the snap-fit ​​position.

[0069] In the above structure, when the doctor needs to connect the fixing rod 120 and the measuring rod 10, he can hold the rod sleeve 140 and press the rod core 150 with his thumb. At this time, the rod core 150 moves downward, and the receiving groove 1511 is opposite to the ball. The fixing rod 120 is inserted into the insertion hole 1311. During the movement of the fixing rod 120 in the insertion hole 1311, the ball can retract into the limiting hole 141 and the receiving groove 1511 (in the avoidance position). After the fixing rod 120 is inserted into place, the ball can be opposite to the locking hole 1312. At this time, the thumb is released, and the rod core 150 can achieve the misalignment of the receiving groove 1511 and the ball under the action of the reset force of the reset member 160. The side wall of the rod core 150 pushes the ball to the locking position, thereby realizing the locking of the fixing rod 120 and the measuring rod 10. The fixing rod 120 in this embodiment has a clever structure and is simple to operate, which is conducive to realizing the quick locking of the fixing rod 120 and the measuring rod 10.

[0070] Specifically, such as Figure 15 As shown, in Embodiment 2, the inner hole of the sleeve 140 includes a first hole segment and a second hole segment communicating with the first hole segment. The diameter of the first hole segment is larger than the diameter of the second hole segment. A stepped surface 142 is formed between the first hole segment and the second hole segment. The core 150 includes a push rod 151 and an operating cap 152 disposed at one end of the push rod 151. A reset member 160 is disposed between the stepped surface 142 and the operating cap 152. The operating cap 152 is also provided with a strip hole 1521. The fixing rod 120 also includes a positioning pin 143 that passes through the sleeve 140 and extends into the strip hole 1521. In the above structure, the strip hole 1521 and the positioning pin 143 cooperate to limit the pushing stroke of the core 150. When the doctor presses the core 150 to the bottom, the receiving groove 1511 on the core 150 is exactly opposite to the ball bearing, and the ball bearing can move smoothly to the avoidance position. When the pressing of the rod core 150 is stopped, the reset member 160 pushes the rod core 150 to move, causing the receiving groove 1511 and the ball to be misaligned. The side wall of the rod core 150 can push the ball to the snap-fit ​​position, realizing the snap-fit ​​engagement between the fixed rod 120 and the measuring rod 10.

[0071] like Figure 14 As shown, in Embodiment 2, an anti-rotation plane 144 is provided on the side wall of the insertion end of the fixing rod 120, and a mating plane that engages with the anti-rotation plane 144 is provided on the wall of the insertion hole 1311. This structure enables an anti-rotation engagement between the fixing rod 120 and the measuring rod 10, thereby improving the connection stability between the fixing rod 120 and the measuring rod 10.

[0072] This application also provides a third embodiment of the osteotomy guide device. The difference between Embodiment Three and Embodiments One and Two is that the fixation structure 30 in Embodiment Three includes a clamping clamp 50 and a fixing rod 120, which are interchangeably mounted on the measuring rod 10. By applying the technical solution of Embodiment Three, doctors can choose to use either the clamping clamp 50 or the fixing rod 120 as the fixation structure according to the patient's actual condition, thus increasing the richness of the doctor's surgical strategy options.

[0073] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0074] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0075] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An osteotomy guide device, characterized in that, include: Measuring rod (10), on which measuring scale (111) is provided; The osteotomy guide rod (20) is adjustablely mounted on the measuring rod (10). The osteotomy guide rod (20) is angled to the measuring rod (10) and has an osteotomy guide groove (221). A fixing structure (30) is provided on the measuring rod (10) to fix the position of the measuring rod (10); The osteotomy guide rod (20) includes a sleeve portion (21) and a guide rod body (22) disposed on the side wall of the sleeve portion (21). The osteotomy guide groove (221) is disposed in the guide rod body (22). The measuring rod (10) passes through the inner hole of the sleeve portion (21). The osteotomy guide groove (221) extends along the length direction of the guide rod body (22). The osteotomy guide rod (20) is bent or flexed and has abutting protrusion (23). The sidewall of the measuring rod (10) has a top surface (11), and the measuring scale (111) is set on the top surface (11). The distance between the abutting protrusion (23) and the top surface (11) is greater than the distance between the part of the osteotomy guide rod (20) other than the abutting protrusion (23) and the top surface (11).

2. The osteotomy guide device according to claim 1, characterized in that, The sleeve portion (21) is further provided with a first mounting hole (211) communicating with the inner hole of the sleeve portion (21) on its side wall, and the osteotomy guide device further includes: The first fastener (40) is inserted into the first mounting hole (211) and abuts against the measuring rod (10).

3. The osteotomy guide device according to claim 2, characterized in that, The inner wall of the sleeve portion (21) has an anti-rotation plane that is fitted with the top surface portion (11).

4. The osteotomy guide device according to claim 3, characterized in that, The osteotomy guide groove (221) includes two groove sidewalls (2211) arranged opposite to each other and a groove end wall (2212) disposed between the two groove sidewalls (2211) and opposite to the groove opening of the osteotomy guide groove (221). The groove end wall (2212) has a first included angle α with the top surface (11), and the included angle α is between 40° and 50°.

5. The osteotomy guide device according to claim 1, characterized in that, The osteotomy guide groove (221) is bent along the length of the osteotomy guide rod (20).

6. The osteotomy guide device according to any one of claims 1 to 5, characterized in that, The fixing structure (30) includes a clamp (50), which is detachably connected to the measuring rod (10). The clamp (50) includes a first clamp bar (60) and a second clamp bar (70) hinged together. The first clamp bar (60) includes a first gripping section (61) and a first clamping section (62) with a second included angle β between it and the first gripping section (61). The first clamping section (62) is provided with a first arc-shaped clamping groove (63). The second clamp bar (70) includes a second gripping section (71) and a second clamping section (72) with a third included angle γ between it and the second gripping section (71). The second clamping section (72) is provided with a second arc-shaped clamping groove (73). A clamping space is formed between the first arc-shaped clamping groove (63) and the second arc-shaped clamping groove (73).

7. The osteotomy guide device according to claim 6, characterized in that, The second included angle β is between 80° and 100°; The third included angle γ is between 100° and 120°.

8. The osteotomy guide device according to claim 6, characterized in that, The osteotomy guide device further includes: a connecting block (80), the first end of which is provided with a second sliding hole (81), the connecting block (80) being sleeved on the measuring rod (10) through the second sliding hole (81), the second end of which is provided with a second mounting hole (82), and the second clamping section (72) being provided with a third mounting hole (721). The osteotomy guide device further includes a second fastener (90) passing through the second mounting hole (82) and the third mounting hole (721); or The second clamping section (72) is provided with a fourth mounting hole (722). The clamping clamp (50) also includes a third fastener (100) passing through the fourth mounting hole (722). The third fastener (100) has a limiting pin (101) passing through the rod section located in the second arc-shaped clamping groove (73). The length of the limiting pin (101) is greater than the diameter of the fourth mounting hole (722).

9. The osteotomy guide device according to claim 6, characterized in that, The clamping forceps (50) includes multiple clamps, the first clamp bar (60) and the second clamp bar (70) are hinged together by a hinge pin (64), the hinge pin (64) is provided with a pin hole (641) arranged in the axial direction of the hinge pin (64), and the osteotomy guide device further includes: A positioning link (110) is inserted into the pin holes (641) of the plurality of clamping clamps (50).

10. The osteotomy guide device according to any one of claims 1 to 5, characterized in that, The fixing structure (30) further includes a fixing rod (120), and a snap-fit ​​structure (130) is provided between the fixing rod (120) and the measuring rod (10), and the fixing rod (120) and the measuring rod (10) are connected through the snap-fit ​​structure (130).

11. The osteotomy guide device according to claim 10, characterized in that, The snap-fit ​​structure (130) includes a snap-fit ​​hole (131) on the measuring rod (10) and a snap-fit ​​protrusion (132) on the fixing rod (120). The snap-fit ​​hole (131) includes an insertion hole (1311) that engages with the fixing rod (120) and a snap-fit ​​hole (1312) on the wall of the insertion hole (1311). The snap-fit ​​protrusion (132) is movably provided on the side wall of the fixing rod (120). The snap-fit ​​protrusion (132) has a clearance position inside the fixing rod (120) and a snap-fit ​​position protruding from the side wall of the fixing rod (120). When the snap-fit ​​protrusion (132) is in the snap-fit ​​position, the snap-fit ​​protrusion (132) can extend into the snap-fit ​​hole (1312) to fix the fixing rod (120) on the measuring rod (10).

12. The osteotomy guide device according to claim 11, characterized in that, The fixing rod (120) includes a rod sleeve (140), a rod core (150) passing through the rod sleeve (140), and a reset member (160) disposed between the rod sleeve (140) and the rod core (150). The rod sleeve (140) is provided with a limiting hole (141). The snap-fit ​​protrusion (132) is a ball bearing passing through the rod sleeve (140). The ball bearing is limited and engaged with the wall of the limiting hole (141) and can extend out of the limiting hole (141). Alternatively, it can retract into the limiting hole (141). The rod core (150) is movably disposed in the rod sleeve (140) along the axial direction of the rod sleeve (140). The side wall of the rod core (150) has a receiving groove (1511). When the receiving groove (1511) is opposite to the ball, the ball can retract to the avoidance position. When the receiving groove (1511) is misaligned with the ball, the side wall of the rod core (150) pushes the ball to the snap-fit ​​position.

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