阅读说明：本技术 一种可调式骶骨截骨导板 (Adjustable sacrum osteotomy guide plate ) 是由 邵增务 王佰川 马晓孟 葛志祥 于 2020-04-14 设计创作，主要内容包括：本发明公开一种可调式骶骨截骨导板,包括第一导板、第二导板、第三导板和导向槽延长块；第一导板和第三导板分别与第二导板铰接,且第三导板与第二导板滑动连接,第三导板滑动运动时靠近或远离第一导板；第二导板的截面为“凸形”,包括第一构件和第二构件,且第一构件的厚度大于第二构件的厚度；导向槽延长块设置在第二构件上,其可在第一位置处和第二位置处切换,位于第一位置处时,第一构件与第三导板接触,位于第二位置处时,第一构件与第三导板不接触。本发明通过将第一导板和第三导板铰接于第二导板两侧,并使第三导板在第二导板上向靠近或远离第一导板的方向滑动,能够在截骨手术过程中灵活调节位置和角度,操作简便、灵活,成本低。(The invention discloses an adjustable sacrum osteotomy guide plate, which comprises a first guide plate, a second guide plate, a third guide plate and a guide groove extension block, wherein the first guide plate is provided with a first guide plate and a second guide plate; the first guide plate and the third guide plate are respectively hinged with the second guide plate, the third guide plate is connected with the second guide plate in a sliding mode, and the third guide plate is close to or far away from the first guide plate during sliding movement; the section of the second guide plate is convex, the second guide plate comprises a first member and a second member, and the thickness of the first member is greater than that of the second member; the guide groove extension block is provided on the second member, and is switchable between a first position where the first member is in contact with the third guide plate and a second position where the first member is not in contact with the third guide plate. According to the bone cutting device, the first guide plate and the third guide plate are hinged to two sides of the second guide plate, and the third guide plate slides on the second guide plate in a direction close to or far away from the first guide plate, so that the position and the angle can be flexibly adjusted in the bone cutting operation process, and the bone cutting device is simple, convenient and flexible to operate and low in cost.)

1. An adjustable sacrum osteotomy guide plate is characterized by comprising a first guide plate, a second guide plate, a third guide plate and a guide groove extension block; wherein the content of the first and second substances,

the first guide plate and the third guide plate are hinged with the left end and the right end of the second guide plate respectively, the third guide plate is connected with the second guide plate in a sliding mode, and the third guide plate is close to or far away from the first guide plate during sliding movement;

the section of the second guide plate is in a convex shape and comprises a first member and a second member, the first member is fixedly connected with the second member, and the thickness of the first member is larger than that of the second member;

the guide groove extension block is provided on the second member, and is switchable between a first position at which the first member is in contact with the third guide plate and a second position at which the first member is not in contact with the third guide plate.

2. The adjustable sacral osteotomy guide as recited in claim 1, wherein said first guide comprises a first guide body, a first guide slot, and a first in-line hinge mount;

the one end of first baffle body is fixed to be equipped with the articulated seat of first font, run through on the first baffle body and be equipped with first guide way, just first guide way is by keeping away from the one end of the articulated seat of first font extends to and is close to the articulated seat of first font.

3. The adjustable sacral osteotomy guide as recited in claim 1, wherein said second guide further comprises a first U-shaped hinge seat, a second guide slot, a first sliding slot, and a second in-line hinge seat; wherein the content of the first and second substances,

the first U-shaped hinged seat is fixedly arranged at one end, close to the first guide plate, of the first component, and the second linear hinged seat is fixedly arranged at one end, close to the third guide plate, of the second component;

the second guide groove penetrates through the first component, one end, far away from the first guide plate, of the second guide groove is coaxially communicated with the first sliding groove penetrating through the middle of the second component, and the other end of the first sliding groove is communicated with a circular through hole formed in the middle of the second linear hinged base.

4. The adjustable sacral osteotomy guide as recited in claim 1, wherein said third guide comprises a third guide body, a third guide slot, a second U-shaped hinge mount, and a mating slide slot;

the second U-shaped hinge seat is fixedly arranged at one end of the third guide plate body, the third guide groove penetrates through the third guide plate body, and the third guide groove extends from one end far away from the second U-shaped hinge seat to be close to the second U-shaped hinge seat;

the matching sliding groove is arranged in the third guide plate body and communicated with the second U-shaped hinged seat.

5. The adjustable sacral osteotomy guide as defined in any one of claims 3 to 4, wherein said guide slot extension pieces are provided in sets symmetrically distributed on said second member on opposite sides of said first sliding slot, gaps between said guide slot extension pieces on opposite sides of said first sliding slot forming an extension guide slot, said extension guide slot being in coaxial communication with said second guide slot.

6. The adjustable sacral osteotomy guide as defined in claim 5, wherein said guide slot extension block is removably positionable on said second member by a screw.

7. The adjustable sacral osteotomy guide as defined in claim 5, wherein said first member defines a second sliding channel therein, said guide channel extension block being slidably and symmetrically disposed within said second sliding channel.

8. The adjustable sacral osteotomy guide as defined in claim 7, wherein said guide slot extension block is "concave" in cross-section, having a concave surface slidably engaged with said second member and a lateral surface defining a third sliding slot slidably engaged with a convex strip disposed within said second sliding slot.

9. The adjustable sacral osteotomy guide as defined in claim 1, wherein said second guide plate is pivotally connected at opposite ends thereof to said first and third guide plates by a pivot shaft, said pivot shaft being circular and having a screw hole formed in a central portion thereof.

10. The adjustable sacral osteotomy guide as recited in claim 9, further comprising a locking mechanism, said locking mechanism comprising a set screw and a compression nut;

the fixing screw penetrates through the screw hole, and the compression nut is mounted on the fixing screw and is in threaded connection with the fixing screw.

Technical Field

The invention relates to the technical field of orthopedic medical instruments, in particular to an adjustable sacrum osteotomy guide plate.

Background

The sacrum is one of the important skeletons constituting the pelvis, assists in connecting the trunk and the lower limbs, has important supporting and protecting functions on organs and soft tissues in the pelvic cavity, and also plays an important role in the process of keeping the balance of the human body. The sacrum is formed by fusing five sacral vertebrae, is in an inverted triangle shape, and is divided into a sacrum bottom, a side part, a sacrum tip, a pelvic surface and a dorsal surface. The onset of the sacral tumor is mainly primary malignant tumor, early symptoms are not obvious, the tumor volume is usually found to be large, and surgical resection is the best scheme for treating the sacral tumor. However, the surrounding anatomy of the sacrum is complex, and the blood supply is abundant, so that the tumor resection operation is difficult, long in time and high in risk, and has higher requirements on the technology and experience of doctors. The use of the osteotomy guide plate can determine the osteotomy position and direction, so that the operation difficulty is reduced to a certain extent, but the position and the shape of the tumor have uncertainty, the resection position is changed according to the position and the shape of the tumor, and the single osteotomy guide plate does not have universality, so that the sacrum osteotomy guide plate which can be flexibly adjusted is required to be used by a clinical operation doctor so as to reduce the operation difficulty, reduce the treatment cost and relieve the pain of a patient.

Disclosure of Invention

The invention aims to overcome the technical defects and provide an adjustable sacrum osteotomy guide plate, which solves the technical problem that the position and the shape of the existing osteotomy guide plate cannot be flexibly adjusted.

In order to achieve the technical purpose, the invention provides an adjustable sacrum osteotomy guide plate, which comprises a first guide plate, a second guide plate, a third guide plate and a guide groove extension block;

the first guide plate and the third guide plate are respectively hinged with the left end and the right end of the second guide plate, the third guide plate is connected with the second guide plate in a sliding mode, and the third guide plate is close to or far away from the first guide plate during sliding movement;

the section of the second guide plate is in a convex shape and comprises a first member and a second member, the first member is fixedly connected with the second member, and the thickness of the first member is greater than that of the second member;

the guide groove extension block is provided on the second member, and is switchable between a first position where the first member is in contact with the third guide plate and a second position where the first member is not in contact with the third guide plate.

Compared with the prior art, the invention has the beneficial effects that:

the adjustable sacrum osteotomy guide plate provided by the invention has the advantages that the first guide plate and the third guide plate are hinged to two sides of the second guide plate, and the third guide plate slides on the second guide plate in the direction close to or far away from the first guide plate, so that the position and the angle can be flexibly adjusted in the osteotomy operation process, the operation is simple and convenient, the flexibility is realized, and the cost is low.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic structural diagram of the main body of embodiment 1 of the present invention;

fig. 4 is a sectional view of a hinge portion of the first guide plate and the second guide plate in embodiment 1 of the present invention;

FIG. 5 is a sectional view of a hinge portion of the second guide plate and the third guide plate in embodiment 1 of the present invention;

FIG. 6 is a schematic view showing a state of use of embodiment 1 of the present invention;

FIG. 7 is a schematic structural view of embodiment 2 of the present invention;

FIG. 8 is a schematic structural diagram of the main body of embodiment 2 of the present invention;

FIG. 9 is a schematic structural view of a main body of a second guide plate in embodiment 2 of the present invention;

FIG. 10 is a schematic structural view of a guide groove extension block in a first position in embodiment 2 of the present invention;

FIG. 11 is a schematic structural view of a guide groove extension block in a second position in embodiment 2 of the present invention;

FIG. 12 is a schematic structural view of a guide groove extension block in embodiment 2 of the present invention;

fig. 13 is a sectional view of a hinge portion of the first guide plate and the second guide plate in embodiment 2 of the present invention;

fig. 14 is a sectional view of a hinge portion of the second guide plate and the third guide plate in embodiment 2 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.