CN219126544U - Osteotomy positioning tool and system - Google Patents

Abstract

The utility model discloses an osteotomy positioning tool and system, and relates to the technical field of medical appliances, wherein a tool kit comprises a proximal bone plate and a distal bone plate, wherein the proximal bone plate is provided with bone nail holes penetrating through two opposite sides of the proximal bone plate, a positioning structure is arranged between the distal bone plate and the proximal bone plate, and an osteotomy groove is formed between the proximal bone plate and the distal bone plate; or the far-end bone plate is provided with a bone cutting groove, the bone cutting groove comprises a first groove section and a second groove section, and the first groove section and the second groove section are arranged at an angle. Form the structure of mutual matching between the osteotomy face, be formed with at least one position between two osteotomy faces respectively and be relative, and can mutually support protruding and sunken structure, compare in the reduction alignment of osteotomy of "one" style of calligraphy trench of current scheme, improved the accuracy of osteotomy and osteotomy recovery, be favorable to the bone healing, also improved the postoperative recovery effect of osteotomy, reduced the risk that needs the secondary operation.

Description

Osteotomy positioning tool and system

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an osteotomy positioning tool and system.

Background

In the surgery for the talus of the ankle joint (such as talar fracture, talar necrosis, congenital talar deformity, etc.), the treatment site is usually the inner side of the talus body, but the physiological structure of the medial tibial malleolus and the talus form a semi-enclosed position relationship, so that the operation field of the doctor is blocked, which is unfavorable for the operation. Therefore, the intraoperative process generally needs to cut bones of the inner malleolus, the currently common technical scheme is to cut off the inner malleolus directly, and after the operation on the talus is completed, bone nails are used for preparing bone tunnels at the tail end of the inner malleolus, so that the bone tunnels can be spliced and fixed on the original bone cutting surface.

However, in the current internal malleolus osteotomy scheme, as the osteotomy mode is directly rough, the incision is usually a horizontal section, and the osteotomy amount is large, so that dislocation displacement is easily caused when the internal malleolus is spliced by using a bone screw in the follow-up process, the situations of incorrect angle and the like occur, the postoperative rehabilitation and the daily life of a patient are affected, a serious patient cannot walk downwards, and secondary operation is needed.

Disclosure of Invention

The aim of the embodiment of the utility model is that: the utility model provides an osteotomy positioning tool and system, solves and cuts the low, dislocation aversion easily of bone postmosaics positioning accuracy, the angle is not right, the problem that postoperative rehabilitation effect is poor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in a first aspect, there is provided an osteotomy positioning tool, comprising:

a proximal bone plate provided with bone nail holes penetrating opposite sides thereof;

a distal bone plate configured to be securable to a human bone, the distal bone plate and the proximal bone plate having a positioning structure disposed therebetween;

an osteotomy groove is formed between the proximal bone plate and the distal bone plate; or (b)

The distal bone plate is provided with a bone cutting groove;

the osteotomy groove comprises a first groove section and a second groove section, and the first groove section and the second groove section are arranged at an angle.

As an alternative embodiment, the positioning structure includes a first positioning portion and a second positioning portion, the first positioning portion being disposed on the proximal bone plate, the second positioning portion being disposed on the distal bone plate;

the first and second locating portions are structurally matched to define a relative mounting position of the proximal and distal bone plates.

As an alternative embodiment, the proximal bone plate and the distal bone plate are detachably connected by the positioning structure;

the second positioning part is provided with a clamping groove extending along the inner and outer directions, and the outer side of the second positioning part is provided with an inserting port communicated with the clamping groove; the first positioning part is provided with a clamping block, the clamping block can be clamped into the clamping groove or separated from the clamping groove along the inner and outer directions through the inserting opening, and the clamping groove and the clamping block can be matched to limit the movement of the near-end bone plate and the far-end bone plate in the transverse direction and the longitudinal direction.

As an alternative embodiment, the distal bone plate is provided with a plurality of first fixation holes spaced apart along its longitudinal direction.

As an alternative embodiment, when the osteotomy groove is provided in the distal bone plate, a saw guide plate is further provided on the outside of the distal bone plate;

the saw guide plate is arranged around the osteotomy groove and is enclosed to form a saw guide channel, and the saw guide channel is communicated with the osteotomy groove.

As an alternative embodiment, the osteotomy groove is formed between the first positioning portion and the second positioning portion.

As an alternative embodiment, the distal bone plate is provided with a plurality of first fixing holes spaced apart from each other along a longitudinal direction thereof;

the proximal bone plate is longitudinally provided with a plurality of second fixing holes which are mutually spaced.

In a second aspect, there is provided an osteotomy positioning system, comprising: an osteotomy positioning tool as in the first aspect;

a hollow bone screw which can pass through the bone screw hole to prepare a bone canal on the human bone;

a solid bone screw configured to be fixedly threaded into the bone tunnel.

As an alternative embodiment, further comprising:

a fixation member cooperable with the distal bone plate to fix the distal bone plate to a human bone; or (b)

The fixing piece can be matched with the distal bone plate and the proximal bone plate to fix the distal bone plate and the proximal bone plate to human bones.

As an alternative embodiment, further comprising:

the optical positioning device is used for providing a human skeleton image and matching with the bone cutting positioning tool to realize the bone cutting and structure back splicing of the human skeleton.

The beneficial effects of the utility model are as follows: in the bone cutting positioning tool, the bone nail holes arranged on the proximal bone plate can provide effective positioning for the hollow bone nails in the process of preparing bone tunnels, so that the positioning accuracy of the hollow bone nails is improved, and the bone tunnels are accurately formed on human bones. In addition, as the positioning structure is arranged between the near-end bone plate and the far-end bone plate, the relative position between the prepared bone channel and the bone cutting groove can be limited in the required range of the operation by the positioning structure, the bone cutting can be accurately spliced and fixed back to the original position through the solid bone nail in the splicing process, the splicing positioning precision is improved, compared with the existing restoration scheme (direct bone nail beating), the bone cutting alignment is easier to realize, the alignment process is not easy to shift, and the connection strength of the solid bone nail to the bone cutting can be ensured in a higher horizontal range;

the first groove section and the second groove section which are arranged in an angle mode are arranged on the osteotomy groove, the osteotomy face of the osteotomy and the osteotomy face of the osteotomy are of a mutually matched structure, at least one position is opposite to each other between the two osteotomy faces, and the bulge and the concave structure which can be mutually matched are formed.

Drawings

The utility model is described in further detail below with reference to the drawings and examples.

FIG. 1 is a schematic view of an osteotomy positioning tool according to an embodiment of the present utility model;

FIG. 2 is a second schematic diagram of an osteotomy positioning tool according to an embodiment of the present utility model;

FIG. 3 is an exploded view of an osteotomy positioning tool according to an embodiment of the present utility model;

FIG. 4 is one of the side views of an osteotomy positioning tool according to an embodiment of the present utility model;

FIG. 5 is a front view of one embodiment of an osteotomy positioning tool;

FIG. 6 is a third schematic view of an osteotomy positioning tool according to an embodiment of the present utility model;

FIG. 7 is a second side view of an osteotomy positioning tool according to an embodiment of the present utility model;

FIG. 8 is a front view of a second embodiment of the tool for positioning an osteotomy.

In the figure: 10. a proximal bone plate; 11. bone nail holes; 111. a first nail hole; 112. a second nail hole; 12. a first positioning portion; 121. a clamping block; 122. a male hook; 13. a second fixing hole; 14. bone fossa; 20. a distal bone plate; 21. a second positioning portion; 211. a clamping groove; 212. a plug-in port; 213. a hook groove; 22. a first fixing hole; 23. saw guide plate; 231. a saw guide channel; 30. osteotomy groove; 31. a first trough section; 311. a first osteotomy face; 32. a second trough section; 321. a second osteotomy face; 33. a first longitudinal axis.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As known from the background technology, in the current internal malleolus osteotomy scheme, as the osteotomy mode is directly rough, the incision is generally a horizontal section, and the osteotomy quantity is large, so that the situations of dislocation and displacement, incorrect angles and the like are easily caused when the internal malleolus is spliced by using the bone nails in the follow-up process, the postoperative rehabilitation and daily life of a patient are affected, a serious patient cannot walk downwards, and a secondary operation is needed. For this purpose, the present embodiment provides the following.

The anatomical name of the medial malleolus (medial malleolus), also called the osteosynthesis, is the inward apophysis of the lower tibia, which, due to its physiological structure, forms a semi-enclosed positional relationship with the talus, and therefore, in the case of requiring surgery on the ankle talus, it is necessary to osteotomy on the medial malleolus.

As shown in fig. 1-2 and 6, the present embodiment provides an osteotomy positioning tool, which includes a proximal bone plate 10 and a distal bone plate 20, wherein in an operation scene of an ankle osteotomy, the proximal bone plate 10 is used for being fixed at an malleolus of a human body, so in the present embodiment, the proximal bone plate 10 has a curved structure, so that a bone socket 14 for accommodating the malleolus is formed at the inner side of the proximal bone plate 10, so that the proximal bone plate 10 can be more attached to the malleolus, and more effective connection is realized. The distal bone plate 20 is fixed on the tibia (tibial diaphysis) of the human body, in order to improve the connection strength between the distal bone plate 20 and the tibia, the distal bone plate 20 is generally disposed along the longitudinal extension of the tibia, so as to improve the contact area between the two, and the distal bone plate 20 is also required to be disposed in a curved structure according to the biological characteristics of the tibia, as can be seen from fig. 4 and 7, one ends of the proximal bone plate 10 and the distal bone plate 20 are disposed close to each other in the surgical scene, the proximal bone plate 10 is gradually bent inward from the end close to the distal bone plate 20 toward the end far from the distal bone plate 20, and the distal bone plate 20 is gradually bent outward from the end close to the proximal bone plate 10 toward the end far from the proximal bone plate 10, so that the bone cutting positioning tool is generally in an S shape, and is more fit with the human body structure.

It should be understood that the medial aspect of the present embodiment refers to the side of the osteotomy positioning tool (including the proximal bone plate 10 and the distal bone plate 20) that is used in surgery to secure a patient's tibia, and the "medial" aspect indicated by the arrows in figures 4 and 7. The lateral aspect of the present embodiment refers to the side of the osteotomy positioning tool (including the proximal bone plate 10 and the distal bone plate 20) that is intended to be positioned away from the tibia of the person during surgery, and the "lateral" aspect indicated by the arrows in figures 4 and 7. The inner and outer sides according to the present embodiment are used to define only one side of a certain component, and are not limited to a specific direction of the component.

Wherein, the proximal bone plate 10 is used as a member for fixing and connecting the inner malleolus of the human body, and is provided with bone nail holes 11 penetrating through the inner and outer sides of the proximal bone plate, and the bone nail holes 11 are used for providing a positioning function for the hollow bone nails in the process of preparing the bone canal for the inner malleolus, so that the bone canal can be accurately positioned and formed on the inner malleolus according to the operation requirement. In order to achieve that the positional relationship between the bone tunnel and the osteotomy face can meet the requirements of the internal malleolus osteotomy, a positioning structure is arranged between the distal bone plate 20 and the proximal bone plate 10, the positioning structure can restrict the relative positional relationship between the proximal bone plate 10 and the distal bone plate 20 in the operation to a certain extent, in the operation, the proximal bone plate 10 and the distal bone plate 20 can be respectively fixed on the tibia internal malleolus and the tibia body, in one embodiment, the proximal bone plate 10 and the distal bone plate 20 can be in a split structure, the two are sequentially installed and fixed on the tibia of a human body, and the relative position is determined through the positioning structure in the installation process. In another embodiment, the proximal bone plate 10 and the distal bone plate 20 may be positioned and engaged by a positioning structure before being fixed to the tibia of the human body, and then integrally fixed to the tibia of the human body after determining the relative positional relationship between the two.

On the basis of the above-described scheme, this embodiment provides the following two setting modes of the osteotomy groove 30:

1. an osteotomy groove 30 is formed between the proximal bone plate 10 and the distal bone plate 20;

2. the distal bone plate 20 is provided with osteotomy grooves 30.

According to the setting mode, the setting mode is adopted, because the positioning structure is arranged between the proximal bone plate 10 and the distal bone plate 20, the relative position between the prepared bone canal and the bone cutting groove 30 can be limited in the required range of the operation by the positioning structure, in the operation, the hollow bone nail is firstly used for preparing the bone canal at the malleolus through the bone nail hole 11, then the bone saw is used for carrying out bone cutting treatment on the malleolus through the positioning of the bone cutting groove 30, and because the relative position between the fixing hole and the bone cutting groove 30 is limited by the positioning structure, the relative position between the bone canal on the malleolus and the bone cutting surface can be accurately positioned, the malleolus can be accurately spliced and fixed back to the original position in the splicing process, the splicing positioning accuracy is improved, compared with the existing recovery scheme (direct bone nail punching), the alignment of the malleolus is easier to be realized, the alignment process is not easy to shift, and the connection strength of the solid bone nail to the malleolus can be ensured in a higher horizontal range.

In order to improve the splicing accuracy of the inner malleolus after osteotomy, in this embodiment, the osteotomy groove 30 is set to at least two groove segments, and an angle is formed between any two adjacent groove segments, so that at least one bending part is formed on the osteotomy groove 30, and then the osteotomy surface of the inner malleolus and the osteotomy surface of the tibia are mutually matched. As shown in fig. 1-8, the osteotomy groove 30 includes a first groove segment 31 and a second groove segment 32, where the first groove segment 31 and the second groove segment 32 are disposed at an angle, so that when the bone saw performs osteotomy on the malleolus through the osteotomy groove 30, the bone saw can cut an osteotomy surface with at least one convex part or concave part through the design of the osteotomy groove 30, corresponding to the osteotomy surface, the osteotomy surface on the tibia is also formed with at least one concave part or convex part at an opposite position, and positioning and splicing can be realized between the malleolus and the tibia by virtue of the matched convex parts and concave parts on the osteotomy surface, compared with the linear groove position in the prior art, the reduction alignment of the malleolus is easier to realize, the accuracy of osteotomy and osteotomy recovery is improved, the osteotomy recovery is facilitated, the postoperative recovery effect of the malleolus osteotomy is also improved, and the risk of requiring secondary surgery is reduced.

It should be noted that, the osteotomy positioning tool provided in this embodiment can be applied to other human body bone osteotomy operations besides the human body malleolus osteotomy operation, and the present embodiment only uses the human body malleolus osteotomy as an exemplary illustration, so that the protection scope of the present utility model is not limited in detail.

It is understood that the first groove section 31 and the second groove section 32 may be respectively configured as a groove structure extending along a straight line, or may be respectively configured as a groove structure extending along an irregular line end direction such as an arc line, a curve line, etc. At least the osteotomy groove 30 can reserve sufficient cutting space for the bone saw, and the angle between the at least two groove segments is sufficient to allow the bone saw to form a corresponding location on the osteotomy face.

In an embodiment, the osteotomy groove 30 may further include a plurality of groove segments such as a third groove segment and a fourth groove segment, which is not particularly limited in this embodiment.

The proximal bone plate 10 and the distal bone plate 20 according to this embodiment are fixed in relative positions during surgery by a positioning structure, and as shown in fig. 1 and 6, the positioning structure includes a first positioning portion 12 and a second positioning portion 21, the first positioning portion 12 is disposed on the proximal bone plate 10, the second positioning portion 21 is disposed on the distal bone plate 20, contact positioning or non-contact positioning can be adopted between the first positioning portion 12 and the second positioning portion 21, the structures of the first positioning portion 12 and the second positioning portion 21 are matched with each other, and in the case that contact positioning is adopted between the first positioning portion 12 and the second positioning portion 21, the relative mounting position of the proximal bone plate 10 and the distal bone plate 20 can be limited by means of mutually abutting and limiting the opposite position between the first positioning portion 12 and the second positioning portion 21. In the case of adopting a non-contact positioning method between the first positioning portion 12 and the second positioning portion 21, a positioning reference portion may be provided between the first positioning portion 12 and the second positioning portion 21, so that the proximal bone plate 10 and the distal bone plate 20 can be positioned at the relative mounting position by means of the positioning reference portion therebetween when they are close to each other.

The positioning mode of the first positioning part 12 and the second positioning part 21 is similar to the principle of the mode of realizing post-osteotomy positioning between the medial malleolus and the tibia through the osteotomy groove 30, in one embodiment, the first positioning part 12 is provided as a protruding block protruding from the plate edge of the proximal bone plate 10, the second positioning part 21 is provided as a recessed groove recessed from the plate edge of the distal bone plate 20, and the protruding block corresponds to the recessed groove in position, so that the protruding block can be at least partially placed in the groove, and a positioning matching relationship is formed between the proximal bone plate 10 and the distal bone plate 20. Of course, the present embodiment is not limited thereto, and in other embodiments, the first positioning portion 12 may be provided as a groove, and the second positioning portion 21 may be provided as a bump, or the first positioning portion 12 and the second positioning portion 21 may each be provided as a structure including a groove and a bump, which is not particularly limited thereto.

Following the above, in one embodiment, the proximal bone plate 10 and the distal bone plate 20 are removably connected by a positioning structure. As shown in fig. 1 to 5, the second positioning portion 21 is provided with a clamping groove 211 extending in the inner-outer direction, and an insertion opening 212 communicating with the clamping groove 211 is provided on the outer side of the second positioning portion 21. Correspondingly, the first positioning portion 12 is provided with a clamping block 121, and in the inner and outer directions, the outer contour structure of the clamping block 121 is matched with the inner contour of the clamping groove 211, so that the clamping block 121 can be clamped into the clamping groove 211 or separated from the clamping groove 211 along the inner and outer directions through the insertion opening 212, and the clamping groove 211 and the clamping block 121 can cooperate to limit the movement of the proximal bone plate 10 and the distal bone plate 20 in the transverse direction and the longitudinal direction, so that the relative displacement of the proximal bone plate 10 and the distal bone plate 20 along the tibial surface during surgery is avoided.

In some embodiments, the distal bone plate 20 may be positioned inside the clamping groove 211 with a stop plate to limit the medial freedom of the clamping block 121 within the clamping groove 211. In this embodiment, the inner and outer sides of the clamping groove 211 are all communicated with the external environment of the distal bone plate 20, which mainly considers that the inner side of the distal bone plate 20 is in a state of being tightly attached to the tibia of the human body during the operation, after the clamping block 121 is clamped into the clamping groove 211, the movement of the clamping block 121 along the inner side direction is also limited by the tibia blocked at the inner side of the clamping groove 211, so the distal bone plate 20 of this embodiment can omit the design of the limiting plate, and can also reduce the overall volume of the osteotomy positioning tool on a secondary basis.

As shown in fig. 1-3, on the basis that the first positioning portion 12 is set to be a protruding block protruding from the edge of the proximal bone plate 10, the second positioning portion 21 is set to be a recessed groove on the edge of the distal bone plate 20, the protruding block and the recessed groove can limit the degrees of freedom of the proximal bone plate 10 and the distal bone plate 20 in the longitudinal direction in a manner of mutually abutting against each other, while the side, away from the distal bone plate 20, of the clamping block 121 is further provided with a protruding hook 122, one end of the protruding hook 122 is connected with the clamping block 121, the other end of the protruding hook 122 extends in the transverse direction, and a hook groove 213 for accommodating the protruding hook 122 is further formed at a position corresponding to the protruding hook 122 of the clamping groove 211, and in a state that the clamping block 121 is clamped into the clamping groove 211, the matching of the protruding hook 122 and the hook groove 213 can limit the degrees of freedom of the clamping block 121 and the clamping groove 211 in the longitudinal direction, specifically, the degrees of freedom of mutually separating the proximal bone plate 10 and the distal bone plate 20 in the longitudinal direction can be limited, so that the proximal bone plate 10 and the distal bone plate 20 are completely limited in the transverse direction.

In the above embodiment, the proximal bone plate 10 and the distal bone plate 20 may be fixed to be engaged by the positioning structure before being fixed to the tibia of the human body, so that the relative positions of the proximal bone plate 10 (the bone nail hole 11) and the distal bone plate 20 (the bone cutting slot 30) are defined, and then the bone cutting positioning tool is integrally fixed to the tibia of the human body, so as to ensure accurate positioning between the bone tunnel and the bone cutting surface.

In this embodiment, the longitudinal and transverse relative positions of the proximal bone plate 10 and the distal bone plate 20 are defined by the positioning structure, and the clamping grooves 211 provide the freedom of the clamping blocks 121 moving in the inner and outer directions, so as to avoid the situation that the fixing holes are deviated from the osteotomy grooves 30 due to the relative displacement of the proximal bone plate 10 and the distal bone plate 20 in the inner and outer directions during the operation, and the distal bone plate 20 is longitudinally provided with a plurality of first fixing holes 22 spaced from each other.

In one embodiment, the first fixation hole 22 is capable of providing a k-wire therethrough to secure the distal bone plate 20 to the tibial body, which is a commonly used internal fixation material for orthopedics, for fixation of small or avulsion fractures, which are less stressed, and also commonly used in the fixation of temporary fracture pieces in orthopedic surgery. In other embodiments, the first fixation hole 22 can also provide for the passage of other medical fixation materials that can mount the distal bone plate 20 to the tibial body.

The following is a method of using the above embodiment in a medial malleolus osteotomy:

combining the proximal bone plate 10 and the distal bone plate 20, wherein the proximal bone plate 10 and the distal bone plate 20 realize positioning fit through a positioning structure, so as to realize the constraint of the relative positions;

the proximal bone plate 10 is used as a positioning reference to be positioned with the inner malleolus of a human body, after the osteotomy direction is found, the distal bone plate 20 is fixed on the tibia body through the first fixing hole 22 by using a Kirschner wire, and the proximal bone plate 10 and the distal bone plate 20 are mutually restrained, so that the proximal bone plate 10 is also stabilized at the inner malleolus together;

the hollow bone nails are aligned with the bone nail holes 11 of the proximal guide plate, and the proximal bone plate 10 is detached from the medial malleolus after the bone canal is prepared;

then the bone is cut on the internal body through the bone cutting groove 30, the bone saw is used for cutting the bone at the position of the V-shaped bone cutting groove 30, and after the bone is cut, the proximal bone plate 10 is detached from the medial malleolus, wherein the proximal bone plate 10 is separated from the distal bone plate 20, and the bone canal and the bone cutting surface are perpendicular to each other;

after surgery on the talus, when the spliced inner malleolus is restored, the V-shaped osteotomy face and the bone path between the tibia and the inner malleolus are aligned (whether accurate restoration is achieved or not can be verified through X-ray assistance during the operation), the inner malleolus is fixed on the tibia again from the bone path by using solid bone nails, and finally, the distal bone plate 20 is removed to complete the surgery.

It should be understood that since the osteotomy positioning tool is positioned intraoperatively along the length of the tibia of the person, the present embodiment defines the length of each component of the osteotomy positioning tool as its longitudinal direction, the "longitudinal direction" indicated by the arrows in figures 1-2, and the transverse direction, the "transverse direction" indicated by the arrows in the figures, on the same surface.

In the embodiment where the above-mentioned osteotomy groove 30 is provided in the distal end bone plate 20, as shown in fig. 2-3, the outer side of the distal end bone plate 20 is further provided with the saw guide plate 23, the saw guide plate 23 is disposed around the osteotomy groove 30 and is enclosed to form the saw guide channel 231, the saw guide channel 231 is mutually communicated with the osteotomy groove 30, and the saw guide channel 231 can effectively guide the pendulum saw, so as to reduce the vibration amplitude of the bone saw, thereby limiting the osteotomy direction of the bone saw and facilitating the directional operation of the pendulum saw.

As shown in fig. 6 to 8, in another embodiment, the osteotomy groove 30 is formed between the first positioning portion 12 and the second positioning portion 21, and in this embodiment, the osteotomy groove 30 is formed between the proximal bone plate 10 and the distal bone plate 20, so that the first positioning portion 12 and the second positioning portion 21 of this embodiment may be disposed in a non-contact positioning fit relationship for saving the volume of the osteotomy positioning tool. In operation, the proximal bone plate 10 is first fixed on the medial malleolus, and the position of the distal bone plate 20 on the tibia relative to the proximal bone plate 10 is defined by non-contact positioning cooperation between the first positioning portion 12 and the second positioning portion 21, and after the mounting positions of the two are mutually determined, an osteotomy groove 30 is formed therebetween, so that subsequent osteotomy operations are facilitated.

In this embodiment, since there is no actual contact between the proximal bone plate 10 and the distal bone plate 20, the two bone plates are fixed to the human skeleton during surgery, as shown in fig. 6 and 8, the distal bone plate 20 and the proximal bone plate 10 are each provided with a fixing hole, specifically, the distal bone plate 20 is longitudinally provided with a plurality of first fixing holes 22 spaced apart from each other, the proximal bone plate 10 is longitudinally provided with a plurality of second fixing holes 13 spaced apart from each other, in this embodiment, the overall structure of the distal bone plate 20 and the proximal bone plate 10 is symmetrical, and the connecting lines between the first fixing holes 22 coincide with the center line of the distal bone plate 20, and similarly, the connecting lines between the second fixing holes 13 coincide with the center line of the proximal bone plate 10. The connection between the first groove section 31 and the second groove section 32 is also located at the center line of the whole osteotomy positioning tool. Of course, in other embodiments, the first fixation hole 22 and the second fixation hole 13 may be positioned in a manner that is less expensive in the lateral direction of the distal bone plate 20 and the proximal bone plate 10, and not necessarily centered, and likewise, the connection between the first slot segment 31 and the second slot segment 32 need not be centered.

The following is a method of using the above embodiment in a medial malleolus osteotomy:

the proximal bone plate 10 is used as a positioning reference to be positioned with the inner malleolus of a human body, and after the osteotomy direction is found, the proximal bone plate 10 is fixed on the inner malleolus through the second fixing hole 13 by using a Kirschner wire;

the hollow bone nails are aligned with the bone nail holes 11 of the proximal guide plate, wherein after the bone tunnel is prepared, the proximal bone plate 10 is detached from the medial malleolus;

the distal bone plate 20 is fixed to the tibial body through the first fixing hole 22 using the k-wire by using the positioning structure as a positioning reference, thereby defining an osteotomy groove 30 with the proximal bone plate 10;

then, the bone is cut on the internal body through the bone cutting groove 30, a bone saw is used for cutting the bone on the V-shaped bone cutting groove 30, after the bone is cut, the proximal bone plate 10 is detached from the medial malleolus, and the bone canal and the bone cutting surface are perpendicular to each other;

after surgery on the talus, when the spliced inner malleolus is restored, the V-shaped osteotomy face and the bone path between the tibia and the inner malleolus are aligned (whether accurate restoration is achieved or not can be verified through X-ray assistance during the operation), the inner malleolus is fixed on the tibia again from the bone path by using solid bone nails, and finally, the distal bone plate 20 is removed to complete the surgery.

In the bone cutting positioning tool with the above two structures, the first groove section 31 and the second groove section 32 are preferably set to be through grooves extending along a straight line, so that the bone saw can cut a protruding structure similar to a "] -shape on the medial malleolus according to the setting mode of the first groove section 31 and the second groove section 32, thereby facilitating the positioning of the subsequent medial malleolus splicing. The first longitudinal axis 33 is defined at the connection position of the first groove section 31 and the second groove section 32, in the above scheme, the longitudinal axes defined by the first groove section 31 and the second groove section 32 are also mutually overlapped with the central line of the osteotomy positioning tool, and the convex structure is arranged in the middle of the whole tool kit, so that the bone saw can be conveniently and uniformly cut along two sides, and the bone saw and the tool kit are prevented from interfering.

In this embodiment, in order to improve the connection strength between the joint and the tibia after the medial malleolus is spliced, as shown in fig. 5 and 8, the two fixing holes are provided, and the bone nail hole 11 includes a first nail hole 111 and a second nail hole 112, where the first nail hole 111 and the second nail hole 112 are separated on opposite sides of the proximal bone plate 10 with the first longitudinal axis 33 as a boundary, so that the first longitudinal axis 33 is set to coincide with the center line of the osteotomy positioning tool, and after the solid bone nail is driven into the bone canal prepared by the first nail hole 111 and the second nail hole 112, the bone canal can be stressed more uniformly, thereby ensuring that the medial malleolus can be restored on the tibia more firmly.

According to the above embodiment, it can be understood that the bone canal is prepared in a manner perpendicular to the osteotomy face, so that a more stable connection relationship between the solid bone nail and the tibia body can be achieved, while in the above embodiment in which the first nail hole 111 and the second nail hole 112 are respectively provided, two manners of setting the bone canal perpendicular to the osteotomy face are provided as follows:

1. as shown in fig. 8, a first osteotomy surface 311 is formed on the inner side of the first slot 31 in the malleolus osteotomy tool kit, a second osteotomy surface 321 is formed on the inner side of the second slot 32 in the malleolus osteotomy tool kit, the extension line of the first nail hole 111 is perpendicular to the first osteotomy surface 311, and the extension line of the second nail hole 112 is perpendicular to the second osteotomy surface 321.

2. As shown in fig. 5, a first osteotomy face 311 is formed on the inner side of the medial malleolus osteotomy tool kit by the first slot section 31, a second osteotomy face 321 is formed on the inner side of the medial malleolus osteotomy tool kit by the second slot section 32, the first nail hole 111 and the second nail hole 112 are arranged in a staggered manner along the inner and outer directions, the osteotomy faces formed by the first nail hole 111 and the second slot section 32 are mutually perpendicular, and the osteotomy faces formed by the second nail hole 112 and the first slot section 31 are mutually perpendicular.

The embodiment also provides an osteotomy positioning system adopting the osteotomy positioning tool, which further comprises the hollow bone nail and the solid bone nail, wherein the hollow bone nail can penetrate through the bone nail hole to prepare a corresponding bone passage on a human skeleton, and the solid bone nail penetrates into the bone passage in the splicing process after osteotomy, so that the osteotomy and the osteotomy to be osteotomy, namely the inner ankle and the tibia are positioned and fixed.

On the basis of the above, the osteotomy positioning system further comprises a fixing member capable of being matched with the distal bone plate or the distal bone plate and the proximal bone plate to fix the distal bone plate or the distal bone plate and the proximal bone plate on the human skeleton simultaneously. In the above scheme, the fixing piece is a kirschner wire, and is fixed with the distal bone plate, or the distal bone plate and the proximal bone plate according to a first fixing hole formed in the distal bone plate, or a first fixing hole formed in the distal bone plate, and a second fixing hole formed in the proximal bone plate.

In order to make the positioning of the osteotomy positioning system in the splicing process between osteotomies and after osteotomies more accurate, the system also comprises an optical positioning device which is used for providing a human skeleton image, clearly displaying the osteotomy surface and the bone canal in the skeleton and realizing the splicing of the osteotomies and the structure after the osteotomies are matched with an osteotomy positioning tool.

In conclusion, through implementing the scheme of the osteotomy positioning tool and system, the problem that positioning accuracy is low when the malleolus is spliced again after the malleolus is osteotomy can be effectively solved, bone healing after the malleolus is spliced is facilitated, postoperative recovery effect of the malleolus osteotomy is improved, and the risk of needing secondary operation is reduced.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are merely for convenience of description and to simplify the operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (10)

1. An osteotomy positioning tool, comprising:

a proximal bone plate (10) provided with bone nail holes (11) penetrating opposite sides thereof;

a distal bone plate (20) configured to be securable to a human bone, the distal bone plate (20) and the proximal bone plate (10) being provided with a positioning structure therebetween;

an osteotomy groove (30) is formed between the proximal bone plate (10) and the distal bone plate (20); or (b)

The distal bone plate (20) is provided with a bone cutting groove (30);

the osteotomy groove (30) comprises a first groove section (31) and a second groove section (32), and the first groove section (31) and the second groove section (32) are arranged at an angle.

2. The osteotomy positioning tool of claim 1, wherein the positioning structure includes a first positioning portion (12) and a second positioning portion (21), the first positioning portion (12) being disposed on the proximal bone plate (10), the second positioning portion (21) being disposed on the distal bone plate (20);

the first and second positioning portions (12, 21) are structurally matched to define a relative mounting position of the proximal and distal bone plates (10, 20).

3. Osteotomy positioning tool according to claim 2, wherein the proximal bone plate (10) and the distal bone plate (20) are detachably connected by the positioning structure;

the second positioning part (21) is provided with a clamping groove (211) extending along the inner and outer directions, and the outer side of the second positioning part (21) is provided with an inserting port (212) communicated with the clamping groove (211); the first positioning part (12) is provided with a clamping block (121), the clamping block (121) can be clamped into the clamping groove (211) or separated from the clamping groove (211) along the inner and outer directions through the inserting opening (212), and the clamping groove (211) and the clamping block (121) can be matched to limit the movement of the proximal bone plate (10) and the distal bone plate (20) in the transverse direction and the longitudinal direction.

4. The osteotomy positioning tool of claim 3, wherein the distal bone plate (20) is longitudinally formed with a plurality of first spaced apart fixation holes (22).

5. The osteotomy positioning tool of any of claims 1-4, wherein when the osteotomy groove (30) is provided in the distal bone plate (20), the outer side of the distal bone plate (20) is further provided with a saw guide plate (23);

the saw guide plate (23) is arranged around the osteotomy groove (30) and is surrounded to form a saw guide channel (231), and the saw guide channel (231) is communicated with the osteotomy groove (30).

6. Osteotomy positioning tool according to claim 2, wherein the osteotomy groove (30) is formed between the first positioning portion (12) and the second positioning portion (21).

7. The osteotomy positioning tool of claim 6, wherein the distal bone plate (20) is longitudinally formed with a plurality of first spaced apart fixation holes (22);

the proximal bone plate (10) is longitudinally provided with a plurality of second fixing holes (13) spaced apart from each other.

8. An osteotomy positioning system, comprising:

the osteotomy positioning tool of any of claims 1-7;

a hollow bone screw which can pass through the bone screw hole to prepare a bone canal on the human bone;

a solid bone screw configured to be fixedly threaded into the bone tunnel.

9. The osteotomy positioning system of claim 8, further comprising:

a fixation member cooperable with the distal bone plate to fix the distal bone plate to a human bone; or (b)

The fixing piece can be matched with the distal bone plate and the proximal bone plate to fix the distal bone plate and the proximal bone plate to human bones.

10. The osteotomy positioning system of claim 8, further comprising:

the optical positioning device is used for providing a human skeleton image and matching with the bone cutting positioning tool to realize the bone cutting and structure back splicing of the human skeleton.

Images