CN217447925U - Longitudinal osteotomy protector for tibial plateau - Google Patents

Abstract

The utility model discloses a tibial plateau vertically cuts bone protector, it includes screening glass and handle, the screening glass includes from the head to the hook portion that the tail connected gradually, first circular arc section and second circular arc section, and the centre of a circle of first circular arc section is located the both sides of screening glass respectively with the centre of a circle of second circular arc section, the handle links to each other with second circular arc section. The operator only needs to hold the handle with one hand to keep the position of the protection sheet still, and holds the cutting knife with the other hand, so that the two hands can be simultaneously carried out without mutual interference. If the cutter touches the protection plate when cutting the bone inwards, the operator can be reminded of reaching the final side of the bone cutting without continuing to cut the bone backwards so as to protect the surrounding tissues at the rear side of the tibial platform and avoid the damage of the surrounding tissues such as the cortex at the rear side of the tibial platform. Moreover, the protector can be suitable for proximal tibial osteotomy operations at the left and right sides, and frequent replacement of the protector is not needed.

Description

Longitudinal osteotomy protector for tibial plateau

Technical Field

The utility model relates to a tibial plateau vertically cuts bone protector.

Background

In recent years, with the continuous development of the unicondylar replacement technology and equipment, the long-term effect of the unicondylar replacement is better and better, and the unicondylar replacement has the advantages of long service life, good limb alignment, easy total knee joint replacement and the like. Compared with total knee arthroplasty, unicondylar arthroplasty retains the anterior and posterior cruciate ligaments of the knee, maintains the normal dynamics and higher level of mobility of the knee, and is closer to the normal knee joint after operation. As the bone of the contralateral side and the patellofemoral intertrochanteric chamber is reserved, more bone mass is preserved, and meanwhile, the total knee joint replacement can be performed when needed. Therefore, the unicondylar replacement has the advantages of small surgical trauma, less bleeding, less complications, short hospitalization time, quick recovery of knee joint function, hospital medical expense saving and the like.

However, in the operation, the tibial plateau resection is divided into two steps of transverse resection and longitudinal resection, wherein the longitudinal resection is only performed by manual operation, and the tibial plateau fracture event is often caused by the damage of the posterior cortex of the tibial plateau due to the too deep resection. Therefore, when the surgeon performs the longitudinal tibial osteotomy, how to ensure the ideal bone mass in the longitudinal tibial osteotomy direction can effectively protect the rest tissues around the joint, which is undoubtedly an examination for the surgical operation technique of the surgeon.

At present, a tool does not exist for helping an operator to simply, safely and controllably cut the bone mass needed by the tibia longitudinally, and meanwhile, surrounding tissues such as ligaments and the like can be protected, so that the operator can finish the bone cutting with great confidence. Therefore, a need exists for a tool that will help effectively address the operational difficulties encountered with longitudinal tibial osteotomies in unicondylar replacement procedures.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tibial plateau vertically cuts bone protector, it has overcome the not enough that the background art exists. The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a tibial plateau vertically cuts bone protector, it includes screening glass and handle, the screening glass includes from the head to the tail portion of colluding, first circular arc section and the second circular arc section that connects gradually, and the centre of a circle of first circular arc section and the centre of a circle of second circular arc section are located the both sides of screening glass respectively, the handle links to each other with second circular arc section.

In a preferred embodiment: the hook part faces to one side of the circle center of the first arc segment.

In a preferred embodiment: the plane of the handle is perpendicular to the plane of the protective sheet.

In a preferred embodiment: the thickness of the protection sheet is 0.5mm-2 mm.

In a preferred embodiment: the handle includes connecting portion and handheld portion, connecting portion with the second circular arc section links to each other, handheld portion head end links to each other with connecting portion, and the width of this handheld portion head end is greater than handheld portion tail end width, and should handheld portion head end to tail end be the circular arc transition.

In a preferred embodiment: the handheld portion is provided with a hollow hole.

In a preferred embodiment: the protection plate is made of metal.

In a preferred embodiment: the handle is made of plastic materials.

Compared with the background technology, the technical scheme has the following advantages:

1. the protecting plate comprises a hook part, a first arc section and a second arc section which are sequentially connected from head to tail, the circle center of the first arc section and the circle center of the second arc section are respectively positioned at two sides of the protecting plate, the hook part abuts against the rear side of the proximal tibia osteotomy in the actual operation process, and the design of the first arc section can enable the protecting plate to avoid the cutting position of the cutter in the cutting process; meanwhile, the handle can be towards the outer side of the cutting knife by the second arc segment, an operator only needs to hold the handle by one hand to keep the position of the protection sheet still, and can hold the cutting knife by the other hand, so that the two hands can be simultaneously carried out without mutual interference. If the cutter touches the protection plate when cutting the bone inwards, the operator can be reminded of reaching the final side of the bone cutting without continuing to cut the bone backwards so as to protect the surrounding tissues at the rear side of the tibial platform and avoid the damage of the surrounding tissues such as the cortex at the rear side of the tibial platform. Moreover, the protector can be suitable for proximal tibial osteotomy operations on the left side and the right side, and frequent replacement of the protector is not needed.

2. The hook portion faces to the side where the center of the first arc segment is located, so that the hook portion can be guaranteed to be hooked to the rear side of the proximal osteotomy of the tibia.

3. The plane that the handle was located and the plane that the screening glass was located arrange perpendicularly mutually, at the actual operation in-process, the screening glass transversely inserted transversely cuts the horizontal space after the bone is accomplished, and the handle is longitudinal arrangement this moment, has greatly made things convenient for art person's handheld comfort level, and the application of force effect is better.

4. The thickness of the protective sheet is 0.5mm-2mm, so that the thickness of the protective sheet can be matched with the transverse space after the transverse osteotomy is finished, and the protective sheet is basically suitable for all patients.

5. The width of the head end of the hand-held part is larger than that of the tail end of the hand-held part, and the head end and the tail end of the hand-held part are in arc transition, so that the hand-held part has better hand feeling and is more suitable for holding postures.

6. The handheld portion is provided with the fretwork hole, the material of reducible handle, reduce cost.

7. The protection piece adopts the metal material, can avoid being cut by the cutter accident and produce the fracture, and intensity and hardness are high.

8. The handle is made of plastic, so that the cost can be reduced, and the hand feeling is kept comfortable.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a perspective view of a tibial plateau longitudinal osteotomy protector according to a preferred embodiment.

Fig. 2 is a second perspective view of a tibial plateau longitudinal osteotomy protector of a preferred embodiment.

Fig. 3 is a top view of a tibial plateau longitudinal resection protector of a preferred embodiment.

FIG. 4 is a schematic view showing the use of the protector during the longitudinal osteotomy procedure according to a preferred embodiment.

FIG. 5 is a second schematic view of the protector in use during a longitudinal osteotomy procedure according to a preferred embodiment.

Detailed Description

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" and "fixedly connected" should be understood in a broad sense, i.e., any connection without displacement relationship or relative rotation relationship between the two, i.e., including non-detachable fixed connection, integrated connection and fixed connection by other devices or elements.

In the claims, the specification and drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

Referring to fig. 1-5, a preferred embodiment of a tibial plateau longitudinal resection protector includes a protective sheet 10 and a handle 20.

As shown in fig. 1 and 2, the protection sheet 10 includes a hook portion 11, a first arc segment 12 and a second arc segment 13, which are sequentially connected from head to tail, and the circle center of the first arc segment 12 and the circle center of the second arc segment 13 are respectively located at two sides of the protection sheet 10. Specifically, as shown in fig. 1, the center of the first circular arc segment 12 is located on the right side of the protection sheet 10, and the center of the second circular arc segment 13 is located on the left side of the protection sheet 10.

In this embodiment, the hook 11 faces a side of the first arc segment 12 where the center of the circle is located. That is, as shown in fig. 1, the hook 11 faces the right side of the protective sheet 10, and the hook 11 can be securely hooked on the back side of the proximal tibia osteotomy.

In this embodiment, the thickness of the protective sheet 10 is 0.5mm to 2mm, so that the thickness of the protective sheet 10 can be matched with the transverse space after the transverse osteotomy is completed, and the protective sheet is basically suitable for all patients.

In this embodiment, the protection sheet 10 is made of metal, so that the protection sheet can be prevented from being broken due to accidental cutting by a cutting knife, and has higher strength and hardness.

The handle 20 is connected to the second circular arc segment 13.

In this embodiment, the handle 20 is disposed in a plane perpendicular to the plane of the protective sheet 10.

In this embodiment, the handle 20 includes a connecting portion 21 and a handheld portion 22, the connecting portion 21 with the second arc segment 13 is connected, the head end of the handheld portion 22 is connected with the connecting portion 21, the width of the head end of the handheld portion 22 is greater than the width of the tail end of the handheld portion 22, and the head end of the handheld portion 22 is in arc transition to the tail end, so that the hand feeling of the handheld portion 22 is better, and the hand-held posture is more suitable for hand holding.

In this embodiment, the handle 22 is provided with a hollow hole 23, which can reduce the material of the handle 20 and reduce the cost.

Moreover, the handle 20 is made of plastic, so that the cost can be reduced, and the hand feeling is kept comfortable.

In the actual operation process, the tibia needs to be subjected to transverse osteotomy, as shown in fig. 4, so that a transverse space is formed; next, the protection sheet 10 of the protector is extended into the transverse space along the opening of the transverse space, and the hook 11 is hooked and abutted to the rear side of the proximal tibia osteotomy, as shown in fig. 5, at this time, the handle 20 faces the outer side of the cutter under the action of the first arc segment 12 and the second arc segment 13, and the longitudinal osteotomy action can be abducted, so as to ensure a sufficient osteotomy space. At this time, the operator holds the handle 20 with one hand to hold the protective sheet 10 in place, and holds the cutter with the other hand, so that both hands can be simultaneously performed without interference. When the cutting knife cuts the bone inwards, if the cutting knife touches the protective sheet 10, the surgeon can be reminded of reaching the final side of the bone cutting without continuing to cut the bone backwards so as to protect the surrounding tissues at the rear side of the tibial plateau and avoid the damage of the surrounding tissues such as the cortex at the rear side of the tibial plateau. Moreover, the protector can be suitable for proximal tibial osteotomy operations on the left side and the right side, and only the handle 20 of the protector needs to be held reversely, so that the protector does not need to be replaced frequently.

The foregoing is only a preferred embodiment of the present invention, and therefore the scope of the invention should not be limited by this, and the equivalent changes and modifications made in the claims and the description should be considered within the scope of the present invention.

Claims (8)

1. The utility model provides a tibial plateau cuts bone protector longitudinally which characterized in that: it includes screening glass and handle, the screening glass includes the portion of colluding, first circular arc section and the second circular arc section that connects gradually from the head to the tail, and the centre of a circle of first circular arc section and the centre of a circle of second circular arc section are located the both sides of screening glass respectively, the handle links to each other with the second circular arc section.

2. The tibial plateau longitudinal resection protector of claim 1, wherein: the hook part faces to one side of the circle center of the first arc segment.

3. The tibial plateau longitudinal resection protector of claim 2, wherein: the plane of the handle is perpendicular to the plane of the protective sheet.

4. The tibial plateau longitudinal resection protector of claim 1, wherein: the thickness of the protection sheet is 0.5mm-2 mm.

5. The tibial plateau longitudinal resection protector of claim 1, wherein: the handle includes connecting portion and handheld portion, connecting portion with the second circular arc section links to each other, handheld portion head end links to each other with connecting portion, and the width of this handheld portion head end is greater than handheld portion tail end width, and this handheld portion head end is the circular arc transition to the tail end.

6. The tibial plateau longitudinal resection protector of claim 5, wherein: the handheld portion is provided with a hollow hole.

7. The tibial plateau longitudinal resection protector of claim 1, wherein: the protection plate is made of metal.

8. The tibial plateau longitudinal resection protector of claim 1, wherein: the handle is made of plastic materials.

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