CN114916985A

CN114916985A - Osteotomy guiding device

Info

Publication number: CN114916985A
Application number: CN202210676261.XA
Authority: CN
Inventors: 柴伟; 孔祥朋; 智信; 南少奎; 张少坤; 毛联甲
Original assignee: Beijing AK Medical Co Ltd; Fourth Medical Center General Hospital of Chinese PLA
Current assignee: Beijing AK Medical Co Ltd; Fourth Medical Center General Hospital of Chinese PLA
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-08-19

Abstract

The invention provides a osteotomy guiding device, comprising: the measuring rod is provided with measuring scales; the osteotomy guide rod is adjustably arranged on the measuring rod, and the osteotomy guide rod and the measuring rod are arranged at an angle and are provided with osteotomy guide grooves; and the fixing structure is arranged on the measuring rod to fix the position of the measuring rod. By applying the technical scheme of the invention, the problems of uneven osteotomy surface and poor parallelism of a plurality of osteotomy surfaces after osteotomy by adopting an operation tool in the related technology can be effectively solved.

Description

Osteotomy guiding device

Technical Field

The invention relates to the field of auxiliary osteotomy tools, in particular to an osteotomy guide device.

Background

Medically, some cases often require osteotomy to restore normal function, such as congenital Hip dislocation (Development40l Dyspl40si40 of the Hip, DDH), which is one of the common diseases requiring osteotomy treatment, and has a condition that the femoral head loses its normal relationship with the acetabulum in the joint capsule, resulting in abnormal growth before and after birth.

Currently, for the surgical treatment of DDH, a posterior approach is generally adopted to perform femoral rotation and shortened osteotomy treatment on a patient. Specifically, as shown in fig. 16, a bone segment is first cut from the femur, then the femurs at both ends are butted, finally the cut bone segment is divided into two parts along the axial direction to form two bone fragments, the two bone fragments are wrapped at the joint of the butted femurs, and then the bone fragments are sutured to be firmly wrapped at the butted femurs.

Because two parts of thighbone have the butt joint demand, consequently need guarantee the roughness of osteotomy face, the stability of present surgical tool is relatively poor, leads to the doctor to be difficult to cut out level and parallel osteotomy face at the osteotomy in-process, causes the condition of buckling to appear easily after two sections thighbones butt joint, influences patient's postoperative walking. Similar problems are encountered with other osteotomy treatments.

Disclosure of Invention

The invention mainly aims to provide a osteotomy guiding device to solve the problems that an osteotomy surface is uneven and the parallelism of a plurality of osteotomy surfaces is poor after an osteotomy is performed by adopting an operation tool in the related technology.

In order to achieve the above object, the present invention provides an osteotomy guide comprising: the measuring rod is provided with measuring scales; the osteotomy guide rod is adjustably arranged on the measuring rod, and the osteotomy guide rod and the measuring rod are arranged at an angle and are provided with osteotomy guide grooves; and the fixing structure is arranged on the measuring rod to fix the position of the measuring rod.

Furtherly, cut the bone guide bar and include sleeve part and set up the guide bar body on the lateral wall of sleeve part, cut the bone guide way and set up in the guide bar body, the measuring stick wears to locate the downthehole of sleeve part, still is provided with the first mounting hole with the inner hole intercommunication of sleeve part on the lateral wall of sleeve part, cuts bone guider still includes: the first fastening piece penetrates through the first mounting hole and is matched with the measuring rod in an abutting mode.

Furthermore, the side wall of the measuring rod is provided with a top surface part, the hole wall of the inner hole of the sleeve part is provided with a rotation stopping plane matched with the rotation stopping of the top surface part, and the measuring scale is arranged on the top surface part.

Furthermore, the osteotomy guide groove extends along the length direction of the guide rod body, and the osteotomy guide rod is bent or bent and is provided with a propping convex section.

Further, the osteotomy guide slot comprises two opposite slot side walls and a slot end wall arranged between the two slot side walls and opposite to the notch of the osteotomy guide slot, wherein a first included angle alpha is formed between the slot end wall and the top surface part, and the included angle alpha is between 40 degrees and 50 degrees.

Further, the osteotomy guide groove is arranged in a bending mode in the length direction of the osteotomy guide rod.

Furthermore, the fixed knot constructs including the centre gripping pincers, the centre gripping pincers can be dismantled with the measuring stick and be connected, the centre gripping pincers are including articulated first pin and the second pin that sets up, first pin including first section of gripping and with the first section of gripping between have the first centre gripping section of second contained angle beta, first centre gripping section is provided with first arc clamp groove, the second pin including the second section of gripping and with the second grip have the second centre gripping section of third contained angle gamma between the section, the second centre gripping section is provided with second arc clamp groove, form the centre gripping space between first arc clamp groove and the second arc clamp groove.

Further, the second included angle β is between 80 ° and 100 °; the third included angle gamma is between 100 deg. and 120 deg..

Further, the osteotomy guide further comprises: the first end of connecting block is provided with the second slide opening, and the connecting block is located on the measuring stick through the second slide opening cover, and the second end of connecting block is provided with the second mounting hole, is provided with the third mounting hole on the second centre gripping section, cuts bone guider still including wearing to locate the second fastener in second mounting hole and the third mounting hole.

Furthermore, a fourth mounting hole is formed in the second clamping section, the clamping pliers further comprise a third fastener penetrating through the fourth mounting hole, a limiting pin penetrates through the rod section of the third fastener, which is located in the second arc-shaped clamping groove, and the length of the limiting pin is larger than the diameter of the fourth mounting hole.

Further, the centre gripping pincers include a plurality ofly, and first tong pole and second tong pole are articulated through articulated round pin axle, and articulated round pin epaxial is provided with the round pin shaft hole that sets up along the axial direction of articulated round pin axle, cuts bone guider still includes: the positioning connecting rod penetrates through the pin shaft holes of the clamping pincers.

Furthermore, the location connecting rod includes the connecting rod body and sets up in the portion of taking of the one end of connecting rod body, takes the portion of holding including being a plurality of plate bodies of angle setting.

Furthermore, the fixing structure further comprises a fixing rod, a clamping structure is arranged between the fixing rod and the measuring rod, and the fixing rod is connected with the measuring rod through the clamping structure.

Further, the joint structure is including setting up the joint arch on the dead lever and the joint hole that sets up on the dead lever on the card hole that sets up on the measuring stick, the card hole includes with the dead lever grafting complex spliced eye and set up the joint hole on the pore wall of spliced eye, movably on the lateral wall of dead lever is provided with the joint arch, the joint arch has the joint position of dodging the position and protrusion in the lateral wall of dead lever that is located the dead lever, when the joint arch is located the joint position, the joint arch can stretch into to the joint downthehole so that the dead lever is fixed on the measuring stick.

Further, the dead lever includes the pole cover, wear to locate the pole piece in the pole cover and set up the piece that resets between pole cover and pole piece, be provided with spacing hole on the pole cover, the joint is protruding for wearing to locate the ball on the pole cover, the ball can stretch out in spacing hole or return to spacing downthehole with the spacing cooperation of the pore wall in spacing hole, the pole piece is along the movably setting in the pole cover of axial direction of pole cover, there is the holding tank on the lateral wall of pole piece, the holding tank is when relative with the ball, the ball can move back to dodging the position, when holding tank and ball dislocation, the lateral wall of pole piece pushes away the ball to the joint position.

Further, the hole of rod cover includes first hole section and the second hole section that communicates with first hole section, the diameter of first hole section is greater than the diameter of second hole section, form the step face between first hole section and the second hole section, the rod core includes the push rod and sets up in the operation pressure cap of the one end of push rod, the piece that resets sets up between step face and operation pressure cap, still be provided with the bar hole on the operation pressure cap, the dead lever still including wear to locate the locating pin that the rod sheathes in and stretch into the bar hole.

Furthermore, a rotation stopping plane is arranged on the side wall of the inserting end of the fixing rod, and a matching plane matched with the rotation stopping plane in a rotation stopping manner is arranged on the hole wall of the inserting hole.

By applying the technical scheme of the invention, the osteotomy guiding device comprises the measuring rod, and the measuring rod is provided with measuring scales, so that the osteotomy length can be conveniently measured. The bone cutting guide rod is arranged on the measuring rod in an adjustable mode, and a doctor can adjust the position of the bone cutting guide rod according to the actual bone cutting length. Cut and be provided with the guide way of cutting the bone on the bone guide bar, cut the bone guide way and can play the guide effect to the cutting direction of cutting the bone saw bit to guarantee a plurality of planar parallels of cutting the bone. In addition, still be provided with fixed knot on the measuring stick of this application constructs, and fixed knot constructs the position that can fix the measuring stick to reduce the measuring stick and take place the probability that removes at the in-process of cutting the bone, and then reduce the probability that cuts bone guide bar and patient's skeleton and take place relative displacement, guaranteed to cut bone guider at the stability of cutting the bone in-process, and then be favorable to promoting and cut planar roughness and the parallelism of bone.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a perspective view of a first embodiment of an osteotomy guide according to the invention;

figure 2 shows a perspective view of the measurement shaft and the osteotomy guide shaft of the osteotomy guide of figure 1;

FIG. 3 shows a top view of the measurement rod and osteotomy guide rod of FIG. 2;

FIG. 4 shows a cross-sectional view A-A of the measurement rod and osteotomy guide rod of FIG. 3;

FIG. 5 is a schematic structural view showing another embodiment of the measurement rod of FIG. 3 and an osteotomy guide slot of the osteotomy guide rod;

figure 6 shows a perspective view of a clamping jaw of the osteotomy guide of figure 1;

figure 7 shows an enlarged schematic view of the clamp of figure 6 at B;

figure 8 shows a side view of the clamping jaw of figure 7;

FIG. 9 illustrates a perspective view of a positioning link of the osteotomy guide of FIG. 1;

figure 10 shows a perspective view of a second embodiment of the osteotomy guide according to the invention in use;

figure 11 shows a perspective view of the osteotomy guide of figure 10;

figure 12 shows a front view of the osteotomy guide of figure 11;

figure 13 shows an enlarged schematic view of the osteotomy guide of figure 12 at C;

figure 14 illustrates a perspective view of a fixation rod of the osteotomy guide of figure 10;

figure 15 shows a cross-sectional view of the fixation rod of figure 14;

fig. 16 shows an osteotomy flow diagram of the surgery of DDH in the related art.

Wherein the figures include the following reference numerals:

10. a measuring rod; 11. a top surface portion; 111. measuring scales; 20. a osteotomy guide rod; 21. a sleeve portion; 211. a first mounting hole; 22. a guide rod body; 221. a osteotomy guide slot; 2211. a trench sidewall; 2212. a slot end wall; 23. abutting against the convex section; 30. a fixed structure; 40. a first fastener; 50. a holding clamp; 51. a spring plate; 52. a rack bar; 53. clamping the bulges; 60. a first clamp lever; 61. a first holding section; 62. a first clamping section; 63. a first arc-shaped clamping groove; 64. hinging a pin shaft; 641. a pin shaft hole; 70. a second clamp bar; 71. a second gripping section; 72. a second clamping section; 721. a third mounting hole; 722. a fourth mounting hole; 73. a second arc-shaped clamping groove; 80. connecting blocks; 81. a second slide hole; 82. a second mounting hole; 90. a second fastener; 100. A third fastener; 101. a spacing pin; 110. positioning the connecting rod; 1101. a connecting rod body; 1102. a holding section; 120. a fixing rod; 130. a clamping structure; 131. a clamping hole; 1311. inserting holes; 1312. a clamping hole; 132. clamping the bulges; 140. a rod sleeve; 141. a limiting hole; 142. a step surface; 143. positioning pins; 144. a rotation stopping plane; 150. a rod core; 151. a push rod; 1511. Accommodating a tank; 152. operating the pressing cap; 1521. a strip-shaped hole; 160. a reset member; 170. the patient's bones.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1, the osteotomy guide of the first embodiment comprises: a measurement rod 10, an osteotomy guide rod 20, and a fixation structure 30. Wherein, the measuring rod 10 is provided with a measuring scale 111; the osteotomy guide rod 20 is adjustably disposed on the measuring rod 10, the osteotomy guide rod 20 being disposed at an angle to the measuring rod 10 and having an osteotomy guide slot 221; the fixing structure 30 is disposed on the measuring stick 10 to fix the position of the measuring stick 10.

By applying the technical scheme of the embodiment, the osteotomy guiding device comprises the measuring rod 10, and the measuring rod 10 is provided with the measuring scale 111, so that the osteotomy length can be conveniently measured. The measurement rod 10 is provided with an osteotomy guide rod 20, the osteotomy guide rod 20 is adjustably provided on the measurement rod 10, and a doctor can adjust the position of the osteotomy guide rod 20 according to the actual osteotomy length. The osteotomy guiding rod 20 is provided with an osteotomy guiding slot 221, and the osteotomy guiding slot 221 can guide the cutting direction of the osteotomy saw blade, so as to ensure the parallelism of a plurality of osteotomy planes. In addition, still be provided with fixed knot on the measuring stick 10 of this application constructs 30, and fixed knot constructs 30 can fix the position of measuring stick 10 to reduce measuring stick 10 and take place the probability that removes at the in-process of cutting the bone, guaranteed to cut bone guider at the stability of cutting the bone in-process, and then be favorable to promoting the plane roughness and the parallelism of cutting the bone.

It should be noted that the measuring rod 10 is disposed perpendicular to the osteotomy guide rod 20.

Specifically, as shown in fig. 1 and 2, the osteotomy guide rod 20 may include a plurality of osteotomy guide rods 20, and when a plurality of osteotomy surfaces are required to be cut, the plurality of osteotomy guide rods 20 may be mounted on the measuring rod 10, so as to guide the osteotomy direction of the osteotomy saw blade during a plurality of osteotomies. Of course, in other embodiments, only one osteotomy guide 20 may be provided, and after the first osteotomy is completed, the position of the osteotomy guide 20 is adjusted and the second osteotomy is performed.

In order to improve the connection stability between the osteotomy guide rod 20 and the measuring rod 10 and reduce the probability of relative movement between the osteotomy guide rod 20 and the measuring rod 10 during osteotomy, as shown in fig. 2 to 4, in the first embodiment, 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 slot 221 is disposed on the guide rod body 22, the measuring rod 10 is disposed in the inner hole of the sleeve portion 21 in a penetrating manner, the side wall of the sleeve portion 21 is further provided with a first mounting hole 211 communicated with the inner hole of the sleeve portion 21, the osteotomy guide device further includes a first fastening member 40, and the first fastening member 40 is disposed in the first mounting hole 211 and is in abutting engagement with the measuring rod 10. In the structure, the osteotomy guide rod 20 comprises a sleeve portion 21, the sleeve portion 21 is sleeved on the measuring rod 10 and can be arranged on the measuring rod 10 to realize position adjustment of the osteotomy guide rod 20 on the measuring rod 10, a first mounting hole 211 is formed in the side wall of the sleeve portion 21, a first fastener 40 penetrates through the first mounting hole 211 and is in abutting fit with the measuring rod 10, the first fastener 40 is a fastening screw, an internal thread matched with the fastening screw is arranged in the first mounting hole 211, the bottom of the fastening screw is an abutting plane, the fastening screw is screwed down and abuts against the measuring rod 10 through the abutting plane, and stable connection of the osteotomy guide rod 20 and the measuring rod 10 is realized. The fastening screw is matched with the internal thread, the operation is simple, and the stability and the reliability of the fastening connection of the osteotomy guide rod 20 and the measuring rod 10 can be improved.

As shown in fig. 2 and 4, in the first embodiment, the side wall of the measuring rod 10 has a top surface portion 11, the hole wall of the inner hole of the sleeve portion 21 has a rotation stop plane in which the top surface portion 11 is engaged with the rotation stop plane, and the measuring scale 111 is provided on the top surface portion 11. In the above configuration, the top surface portion 11 of the measuring rod 10 can be fitted to the hole wall of the inner hole of the sleeve portion 21 in a rotation-stop manner, so that the included angle between the osteotomy guide rod 20 and the measuring rod 10 can be fixed, and when a plurality of osteotomy guide rods 20 are provided on the measuring rod 10, the uniformity of the extending directions of the plurality of osteotomy guide rods 20 can be ensured, thereby improving the parallelism of the plurality of osteotomy planes.

Specifically, as shown in fig. 4, in the first embodiment, the cross section of the measuring rod 10 is a polygonal structure, and the inner hole of the sleeve portion 21 is matched with the cross section of the measuring rod 10, so as to realize the rotation stop matching of the osteotomy guiding rod 20 and the measuring rod 10.

As shown in fig. 4, in the first embodiment, the osteotomy guiding slot 221 extends along the length direction of the guiding rod body 22, and the osteotomy guiding rod 20 is bent or curved and has an abutting convex section 23. In the above structure, the abutting convex section 23 of the osteotomy guiding rod 20 can abut against and cooperate with the bone of the patient, and the distance between the osteotomy guiding slot 221 and the bone 170 of the patient is shortened as much as possible, because the osteotomy saw blade can swing during operation, the farther the osteotomy saw blade moves after penetrating through the osteotomy guiding slot 221, the larger the swing range of the osteotomy saw blade is, the closer the distance between the osteotomy guiding slot 221 and the bone 170 of the patient is, the more the swing of the osteotomy saw blade during operation is facilitated to be reduced, and the flatness of the osteotomy plane is facilitated to be improved.

The distance between the abutting convex section 23 and the top surface portion 11 is greater than the distance between the parts of the osteotomy guide rod 20 other than the abutting convex section 23 and the top surface portion 11.

As shown in fig. 4, in the first embodiment, the osteotomy guide slot 221 includes two slot side walls 2211 disposed oppositely and a slot end wall 2212 disposed between the two slot side walls 2211 and opposite to the slot opening of the osteotomy guide slot 221, the slot end wall 2212 has a first included angle α with the top surface portion 11, and the first included angle α is between 40 ° and 50 °. In the above structure, compared with the case that the slot end wall 2212 extends in the vertical direction of fig. 1, the first included angle α between the slot end wall 2212 and the top surface portion 11 can increase the osteotomy range of the osteotomy saw blade, thereby improving the convenience of the osteotomy of the doctor. In addition, if the angle of the first included angle α is too small, the distance between the slot end wall 2212 of the osteotomy guide slot 221 and the inner hole of the sleeve portion 21 is too close, which affects the strength of the connection between the sleeve portion 21 and the guide rod 22, and the guide rod 22 is easily broken or deformed. If the angle of the first included angle alpha is too large, the osteotomy range of the osteotomy saw blade is affected. The first included angle α may have any value between 40 ° and 50 °, and preferably, the first included angle α may be 40 °, 42 °, 45 °, 47 °, or 50 °.

As shown in fig. 5, in the first embodiment, the osteotomy guide groove 221 may be further provided to be bent in the longitudinal direction of the osteotomy guide rod 20. The structure can increase the area of the osteotomy plane, and is beneficial to the bone fusion effect after splicing two thighbones.

As shown in fig. 6 and 8, in the first embodiment, the fixing structure 30 includes a clamping jaw 50, the clamping jaw 50 is detachably connected to the measuring rod 10, the clamping jaw 50 includes a first clamping bar 60 and a second clamping bar 70 which are hinged to each other, the first clamping bar 60 includes a first holding section 61 and a first clamping section 62 which has a second included angle β with the first holding 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 holding section 71 and a second clamping section 72 which has a third included angle γ with the second holding section 71, the second clamping section 72 is provided with a second arc-shaped clamping groove 73, and a clamping space is formed between the first arc-shaped clamping groove 63 and the second arc-shaped clamping groove 73. The above structure makes the holding forceps 50 bend and set, so as to avoid the muscle tissue of the wound of the patient as much as possible. On the other hand, above-mentioned mode of setting up makes the bone cutting guider utilize the vertical space of patient's wound top as far as possible, is favorable to dwindling patient's wound area, promotes the impression of patient's postoperative, makes the patient postoperative resume better.

In addition, the holding forceps 50 of the present invention is provided separately from the osteotomy guide rod 20, and this arrangement makes it possible to avoid interference between the shape and structure of the osteotomy guide rod 20 and the holding forceps 50, and contributes to a better self-operation, as compared with the case where the holding forceps and the osteotomy guide rod are provided integrally.

Specifically, as shown in fig. 6 and 8, in the first embodiment, the second included angle β is an included angle between the holding surface of the first clamping section 62 and a plane where the end of the first arc-shaped clamping groove 63 is located, and the second included angle β is between 80 ° and 100 °. The third included angle γ is an included angle between the holding surface of the second clamping section 72 and a plane where the end opening of the second arc-shaped clamping groove 73 is located, and the third included angle γ is between 100 ° and 120 °. Above-mentioned structure can make the range of buckling of centre gripping pincers 50 dodge the musculature of patient's wound as far as possible, is favorable to dwindling patient's wound area, promotes the impression of patient's postoperative, makes the patient postoperative resume better.

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

As shown in fig. 2 and fig. 6, in the first embodiment, the osteotomy guiding device further includes a connecting block 80, a first end of the connecting block 80 is provided with a second sliding hole 81, the connecting block 80 is sleeved on the measuring rod 10 through the second sliding hole 81, a 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, and the osteotomy guiding device further includes a second fastener 90 penetrating through the second mounting hole 82 and the third mounting hole 721. In the above structure, the holding forceps 50 and the measuring rod 10 are connected and fixed through the connecting block 80, the holding forceps 50 can clamp the skeleton of the patient, that is, the holding forceps 50 can be fixed with the skeleton 170 of the patient through the clamping mode, and meanwhile, the holding forceps 50 and the measuring rod 10 are fixed through the connecting block 80, so that the measuring rod 10 can be fixed at the relative position with the skeleton of the patient through the holding forceps 50, the holding forceps 50 can be stably clamped on the skeleton of the patient, the measuring rod 10 is stably fixed, and the stability of fixing the osteotomy guide rod 20 is ensured.

It should be noted that, as shown in fig. 1, the clamping forceps 50 is provided with a locking structure, and the clamping forceps 50 can ensure the stability of clamping with the bone through the locking structure. Specifically, the locking structure comprises elastic sheets 51 arranged on the first clamp rod 60 and the second clamp rod 70, a rack rod 52 hinged to one end of the first clamp rod 60 far away from the first clamping section 62, and a clamping protrusion 53 arranged on one end of the second clamp rod 70 far away from the second clamping section 72, wherein the clamping protrusion 53 can be in clamping fit with a rack on the rack rod 52. When the clamping forceps 50 need to be locked, the first forceps rod 60 and the second forceps rod 70 can be pinched, the rack rod 52 is tightly matched with the clamping protrusion 53, at the moment, the elastic piece 51 between the first forceps rod 60 and the second forceps rod 70 can apply acting force which is far away from each other to the first forceps rod 60 and the second forceps rod 70 under the action of elastic restoring force, the first forceps rod 60 and the second forceps rod 70 are locked under the tight matching of the rack rod 52 and the clamping protrusion 53, the opening degree and the closing degree of the jaws of the clamping forceps 50 are locked, the clamping forceps 50 are clamped on the bones of a patient, and the stable connection of the clamping forceps 50 and the bones 170 of the patient is realized.

As shown in fig. 6 and 7, in the first embodiment, the second clamping section 72 is provided with a fourth mounting hole 722, the clamping forceps 50 further includes a third fastening member 100 inserted into the fourth mounting hole 722, the third fastening member 100 is provided with a limit pin 101 on the rod section located in the second arc-shaped clamping groove 73, and the length of the limit pin 101 is greater than the diameter of the fourth mounting hole 722. In the above configuration, the third fastening member 100 is a fastening screw, and tightening the fastening screw to abut against the patient's bone can further fasten the holding forceps 50 to the patient's bone, thereby further improving the stability of the connection between the holding forceps 50 and the patient's bone 170. In addition, the screw rod of the fastening screw is also provided with a limit pin 101 in a penetrating way, and the length of the limit pin 101 is larger than the diameter of the fourth mounting hole 722, so that the fastening screw cannot fall off from the clamping forceps 50, and the operating efficiency of a doctor is improved.

As shown in fig. 1, 8 and 9, in the first embodiment, the clamping forceps 50 include a plurality of clamping forceps 50, the first clamping rod 60 and the second clamping rod 70 are hinged by the hinge pin 64, the hinge pin 64 is provided with a pin hole 641 arranged along the axial direction of the hinge pin 64, and the osteotomy guiding device further includes a positioning connecting rod 110, and the positioning connecting rod 110 is inserted into the pin hole 641 of the plurality of clamping forceps 50. In the above structure, the positioning connecting rod 110 can ensure the coaxiality of the plurality of clamping pincers 50, and in addition, the positioning connecting rod 110 can also play a role in limiting the clamping pincers 50, specifically, when two adjacent clamping pincers 50 twist (not slide) in the direction of approaching to each other or separating from each other, the positioning connecting rod 110 can limit the hole wall of the pin shaft hole 641 of the clamping pincers 50, so as to prevent the clamping pincers 50 from twisting, and ensure the stability of the connection between the clamping pincers 50 and the patient bone 170.

As shown in fig. 9, in the first embodiment, the positioning link 110 includes a link body 1101 and a grip portion 1102 provided at one end of the link body 1101, and the grip portion 1102 includes a plurality of plate bodies arranged at an angle. In the above structure, the holding part 1102 facilitates the doctor to operate the positioning link 110. In addition, the holding part 1102 comprises a plurality of plate bodies arranged in an angle, a preset angle can be formed between two adjacent plate ladders, a doctor can use the holding part 1102 as a measuring scale of the angle during operation, and the arrangement mode improves the functionality of the positioning connecting rod 110.

As shown in fig. 10-12, the present application also provides a second embodiment of the osteotomy guide, the second embodiment differing from the first embodiment in that: the fixing structure 30 has different specific structures, as shown in fig. 1, the fixing structure 30 includes a fixing rod 120, a clamping structure 130 is disposed between the fixing rod 120 and the measuring rod 10, and the fixing rod 120 is connected to the measuring rod 10 through the clamping structure 130. In the above structure, one end of the fixing rod 120 is connected to the measuring rod 10 in a clamping manner, and the other end of the fixing rod 120 is held by an external holding mechanism or manually held by a doctor to fix the position of the fixing rod 120, so as to fix the positions of the measuring rod 10 and the osteotomy guide rod 20. The fixing rod 120 has the advantages of simple structure, small size and capability of further reducing the contact on the muscle tissue of a patient, thereby being beneficial to reducing the wound of the patient and achieving better recovery effect after the operation of the patient. In addition, the fixing rod 120 is connected with the measuring rod 10 in a clamping mode, so that the bone cutting guide device is convenient to disassemble and assemble and is beneficial to reducing the assembling difficulty and the disassembling difficulty of the bone cutting guide device.

As shown in fig. 12 and fig. 13, in the second embodiment, the locking structure 130 includes a locking hole 131 disposed on the measuring stick 10 and a locking protrusion 132 disposed on the fixing stick 120, the locking hole 131 includes an insertion hole 1311 engaged with the fixing stick 120 and a locking hole 1312 disposed on a wall of the insertion hole 1311, a locking protrusion 132 is movably disposed on a sidewall of the fixing stick 120, the locking protrusion 132 has an avoiding position located in the fixing stick 120 and a locking position protruding from the sidewall of the fixing stick 120, and when the locking protrusion 132 is located at the locking position, the locking protrusion 132 can extend into the locking hole 1312 to fix the fixing stick 120 on the measuring stick 10. In the above structure, the clamping hole 131 includes the insertion hole 1311 for inserting and matching the fixing rod 120 and the clamping hole 1312 formed in the hole wall of the insertion hole 1311, and the connection stability between the fixing rod 120 and the measuring rod 10 can be improved by inserting and clamping matching, so that the probability that the measuring rod 10 is separated from the fixing rod 120 in the operation process is reduced. In addition, when the clamping protrusion 132 is located at the clamping position, the clamping protrusion 132 can extend into the clamping hole 1312, and when the measuring rod 10 has a tendency to be separated from the fixing rod 120, the hole wall of the clamping hole 1312 can limit the clamping protrusion 132, so as to prevent the fixing rod 120 from being separated from the measuring rod 10. The above structure can realize stable clamping of the fixing rod 120 and the measuring rod 10.

As shown in fig. 12 to 15, in the second embodiment, the fixing rod 120 includes a rod sleeve 140, a rod core 150 disposed in the rod sleeve 140, and a restoring element 160 disposed between the rod sleeve 140 and the rod core 150, the rod sleeve 140 is provided with a limiting hole 141, the locking protrusion 132 is a ball disposed in the rod sleeve 140, the ball is in limiting fit with a hole wall of the limiting hole 141 and can extend out of the limiting hole 141 or return into the limiting hole 141, the rod core 150 is movably disposed in the rod sleeve 140 along an axial direction of the rod sleeve 140, a receiving groove 1511 is disposed on a side wall of the rod core 150, when the receiving groove 1511 is opposite to the ball, the ball can return to the avoiding position, and when the receiving groove 1511 is dislocated to the ball, the side wall of the rod core 150 pushes the ball to the locking position.

In the above structure, when the doctor needs to connect the fixing rod 120 and the measuring stick 10, the stick cover 140 can be held, the stick core 150 is pressed by the thumb, at this moment, the stick core 150 moves downwards, the accommodating groove 1511 is opposite to the ball, the fixing rod 120 is inserted into the insertion hole 1311, the fixing rod 120 moves in the insertion hole 1311, the ball can return to the limiting hole 141 and the accommodating groove 1511 (at the avoiding position), the ball can be opposite to the clamping hole 1312 after the fixing rod 120 is inserted in place, the thumb is loosened at this moment, the stick core 150 can realize the dislocation of the accommodating groove 1511 and the ball under the action of the resetting force of the resetting piece 160, the side wall of the stick core 150 pushes the ball to the clamping position, and therefore the clamping of the fixing rod 120 and the measuring stick 10 is realized. The fixing rod 120 of the embodiment has the advantages of ingenious structure and simple operation, and is beneficial to realizing the quick clamping connection of the fixing rod 120 and the measuring rod 10.

Specifically, as shown in fig. 15, in the second embodiment, the inner hole of the rod sleeve 140 includes a first hole section and a second hole section communicated with the first hole section, the diameter of the first hole section is greater than that of the second hole section, a step surface 142 is formed between the first hole section and the second hole section, the rod core 150 includes a push rod 151 and an operating press cap 152 disposed at one end of the push rod 151, the reset piece 160 is disposed between the step surface 142 and the operating press cap 152, a strip-shaped hole 1521 is further disposed on the operating press cap 152, and the fixing rod 120 further includes a positioning pin 143 penetrating through the rod sleeve 140 and extending into the strip-shaped hole 1521. In the above structure, the strip-shaped hole 1521 and the positioning pin 143 are matched to limit the ejection stroke of the rod core 150. When the doctor presses the core 150 to the bottommost portion, the receiving groove 1511 on the core 150 just faces the ball, and the ball can smoothly move to the avoiding position. When stopping pressing rod core 150, piece 160 that resets pushes away rod core 150 and removes, makes the dislocation of holding tank 1511 and ball, and the lateral wall of rod core 150 can push up the ball to the joint position, realizes the joint cooperation of dead lever 120 and measuring stick 10.

As shown in fig. 14, in the second embodiment, a rotation stopping plane 144 is disposed on a side wall of the insertion end of the fixing rod 120, and a mating plane that is in rotation stopping fit with the rotation stopping plane 144 is disposed on a hole wall of the insertion hole 1311. The above structure can realize the rotation stop fit of the fixing rod 120 and the measuring rod 10, thereby improving the connection stability of the fixing rod 120 and the measuring rod 10.

The present application also provides a third embodiment of the osteotomy guiding device, the third embodiment being different from the first and second embodiments in that the fixing structure 30 of the third embodiment includes a clamping jaw 50 and a fixing rod 120, the clamping jaw 50 and the fixing rod 120 being replaceably disposed on the measuring rod 10. By applying the technical scheme of the third embodiment, a doctor can select the clamping forceps 50 or the fixing rod 120 to be used as a fixing structure according to the actual situation of a patient, and the richness of the selection of the surgical strategy of the doctor is improved.

In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An osteotomy guide, comprising:

the device comprises a measuring rod (10), wherein measuring scales (111) are arranged on the measuring rod (10);

an osteotomy guide rod (20) adjustably disposed on the measurement rod (10), the osteotomy guide rod (20) disposed at an angle to the measurement rod (10) and having an osteotomy guide slot (221);

and the fixing structure (30) is arranged on the measuring rod (10) and used for fixing the position of the measuring rod (10).

2. The osteotomy guide device according to claim 1, wherein said osteotomy guide rod (20) comprises a sleeve portion (21) and a guide rod body (22) disposed on a side wall of said sleeve portion (21), said osteotomy guide slot (221) being disposed on said guide rod body (22), said measuring rod (10) being inserted into an inner bore of said sleeve portion (21), said sleeve portion (21) being further provided on a side wall thereof with a first mounting hole (211) communicating with the inner bore of said sleeve portion (21), said osteotomy guide device further comprising:

and the first fastening piece (40) penetrates through the first mounting hole (211) and is in abutting fit with the measuring rod (10).

3. The osteotomy guide according to claim 2, wherein a side wall of said measuring rod (10) has a top surface portion (11), a bore wall of an inner bore of said sleeve portion (21) has a rotation stop plane in which said top surface portion (11) is engaged in rotation stop, said measuring scale (111) being provided on said top surface portion (11).

4. The osteotomy guide device according to claim 2, wherein said osteotomy guide slot (221) extends along a length direction of said guide rod body (22), said osteotomy guide rod (20) being bent or curved and having an abutting convex section (23).

5. The osteotomy guide according to claim 3, wherein said osteotomy guide groove (221) comprises two oppositely disposed groove side walls (2211) and a groove end wall (2212) disposed between said two groove side walls (2211) and opposite to a notch of said osteotomy guide groove (221), said groove end wall (2212) having a first angle α with said top surface portion (11), said angle α being between 40 ° and 50 °.

6. The osteotomy guide according to claim 1, wherein said osteotomy guide slot (221) is disposed to be bent in a length direction of said osteotomy guide rod (20).

7. The osteotomy guide of any one of claims 1-6, the fixing structure (30) comprises a clamping jaw (50), the clamping jaw (50) is detachably connected with the measuring rod (10), the clamping pliers (50) comprises a first pliers rod (60) and a second pliers rod (70) which are hinged, the first clamp rod (60) comprises a first holding section (61) and a first clamping section (62) which forms a second included angle beta with the first holding section (61), the first clamping section (62) is provided with a first arc-shaped clamping groove (63), the second clamp rod (70) comprises a second holding section (71) and a second clamping section (72) which forms a third included angle gamma with the second holding section (71), the second clamping section (72) is provided with a second arc-shaped clamping groove (73), and a clamping space is formed between the first arc-shaped clamping groove (63) and the second arc-shaped clamping groove (73).

8. The osteotomy guide of claim 7,

the second included angle beta is between 80 degrees and 100 degrees;

the third included angle gamma is between 100 DEG and 120 deg.

9. The osteotomy guide of claim 7,

the osteotomy guide further comprises: the bone cutting guide device comprises a connecting block (80), wherein a first end of the connecting block (80) is provided with a second sliding hole (81), the connecting block (80) is sleeved on the measuring rod (10) through the second sliding hole (81), a second end of the connecting block (80) is provided with a second mounting hole (82), a second clamping section (72) is provided with a third mounting hole (721), and the bone cutting guide device further comprises a second fastening piece (90) penetrating through the second mounting hole (82) and the third mounting hole (721); or alternatively

A fourth mounting hole (722) is formed in the second clamping section (72), the clamping pliers (50) further comprise a third fastening piece (100) penetrating through the fourth mounting hole (722), a limiting pin (101) penetrates through a rod section of the third fastening piece (100) located in the second arc-shaped clamping groove (73), and the length of the limiting pin (101) is larger than the diameter of the fourth mounting hole (722).

10. The osteotomy guide according to claim 7, wherein said holding forceps (50) comprises a plurality of said first and second forceps rods (60, 70) hinged by a hinge pin (64), said hinge pin (64) having a pin hole (641) disposed along an axial direction of said hinge pin (64), said osteotomy guide further comprising:

and the positioning connecting rod (110) is arranged in the pin shaft holes (641) of the clamping pincers (50) in a penetrating mode.

11. The osteotomy guiding device according to any one of claims 1-6, wherein said fixation structure (30) further comprises a fixation rod (120), a snap-in structure (130) being provided between said fixation rod (120) and said measuring rod (10), said fixation rod (120) and said measuring rod (10) being connected by said snap-in structure (130).

12. The osteotomy guide of claim 11, wherein said snap-fit structure (130) comprises a snap-fit hole (131) provided on said measuring rod (10) and a snap-fit projection (132) provided on said fixation rod (120), the clamping hole (131) comprises an inserting hole (1311) which is matched with the fixing rod (120) in an inserting way and a clamping hole (1312) which is arranged on the hole wall of the inserting hole (1311), the side wall of the fixed rod (120) is movably provided with a clamping bulge (132), the clamping protrusion (132) is provided with an avoiding position positioned in the fixed rod (120) and a clamping position protruding out of the side wall of the fixed rod (120), when the clamping protrusion (132) is located at the clamping position, the clamping protrusion (132) can extend into the clamping hole (1312) to fix the fixing rod (120) on the measuring rod (10).

13. The osteotomy guiding device of claim 14, wherein said fixation rod (120) comprises a rod sleeve (140), a rod core (150) disposed in said rod sleeve (140), and a restoring member (160) disposed between said rod sleeve (140) and said rod core (150), said rod sleeve (140) being provided with a limiting hole (141), said engaging protrusion (132) being a ball disposed in said rod sleeve (140), said ball engaging with a hole wall of said limiting hole (141) and being capable of extending out of said limiting hole (141) or retracting into said limiting hole (141), said rod core (150) being movably disposed in said rod sleeve (140) along an axial direction of said rod sleeve (140), a receiving groove (1511) being provided on a side wall of said rod core (150), said ball being capable of retracting to said retracted position when said receiving groove (1511) opposes said ball, when the accommodating groove (1511) is dislocated with the ball, the side wall of the rod core (150) pushes the ball to the clamping position.