CN211049559U

CN211049559U - Repositor for tibial plateau compression fracture

Info

Publication number: CN211049559U
Application number: CN201921435159.0U
Authority: CN
Inventors: 崔开; 张治宇
Original assignee: FOURTH AFFILIATED HOSPITAL OF CHINA MEDICAL UNIVERSITY
Current assignee: FOURTH AFFILIATED HOSPITAL OF CHINA MEDICAL UNIVERSITY
Priority date: 2019-08-31
Filing date: 2019-08-31
Publication date: 2020-07-21
Anticipated expiration: 2029-08-31

Abstract

The utility model provides a tibial plateau fracture reduction gears for compressibility fracture, including variable folding reduction gears, two connecting rods, threaded main part connecting rod, propulsion sleeve pipe, stopper, control handle, the lower part both ends of variable folding reduction gears link to each other with the upper end activity of connecting rod respectively, the lower extreme of connecting rod and the upper end surface swing joint who impels the sleeve, impel the inside threaded main part connecting rod that cup joints of sleeve, the stopper cover is in the outside of threaded main part connecting rod, the stopper is located propulsion telescopic lower part, the upper end of controlling the handle is connected to the lower extreme of threaded main part connecting rod. The utility model discloses simple structure, it is with low costs, easy to use can increase area of contact after getting into the fracture district, reduces shin bone near-end scope of windowing to increase and fracture face area of contact, the vice damage that brings when effectively reducing tibial plateau fracture and restoring to the throne creates favorable condition for follow-up operation and patient's recovery.

Description

Repositor for tibial plateau compression fracture

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to tibial plateau compressibility restorer for fracture and use thereof.

Background

Fracture reduction is a common technique of orthopedic surgery, and is an important method for restoring fracture alignment, joint surface flatness and limb force line. There are many methods for reduction of fracture, including manual reduction, incision reduction, etc. For example, when the fracture involves the joint surface and there is an indication of surgery, the surgical treatment is required.

Tibial plateau compression fractures are common fracture types, and compression or collapse of the joint surface is often required to be reduced during the surgical treatment process, and then further operations such as bone grafting support are performed. Thereby achieving the purpose of restoring the flatness of the joint surface and the lower limb force line. For tibial plateau compression fracture, the current common surgical method is to open a window at the proximal end of the tibia, knock and support a compression fracture part (joint surface) through an instrument, observe the condition of the joint surface through cutting part of a joint capsule, or assist in observing the fracture recovery condition through an arthroscope. The tibial plateau compression fracture is usually accompanied by fracture of joint surface parts or fracture of cartilage surfaces, if the contact surface of an apparatus is small, unit contact force is easily overlarge, the joint surface is possibly further fractured, so that the joint cavity is communicated with a fracture area, and subsequent bone grafting possibly causes bone particles to enter the joint cavity to form free bodies and the like, so that the joint cavity is further damaged, and complications such as traumatic arthritis are caused. If the contact surface area of the instrument is increased, the proximal tibia windowing part is large, bone damage is caused artificially, the bone mass is lost, and subsequent fracture healing and recovery of a patient are not facilitated.

Disclosure of Invention

The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide tibial plateau compressibility restorer for fracture, this restorer simple structure, with low costs, it is easy to use, can increase area of contact after getting into the fracture district to reduce the shin bone near-end scope of windowing, and increase and fracture surface area of contact, the vice damage that brings when can effectively reduce tibial plateau fracture like this and restore to the throne, create favorable condition for follow-up operation and patient's recovery.

In order to solve the technical problem, the utility model discloses a technical scheme is: restorer for tibial plateau compressibility fracture, including variable folding restorer, two connecting rods, threaded main part connecting rod, propulsion sleeve pipe, stopper, control handle, threaded main part connecting rod comprises solid rod iron and the supporting steel plate that is located solid rod iron top, the lower part both ends of variable folding restorer link to each other with the upper end activity of two connecting rods respectively, the lower extreme of two connecting rods respectively with the outer surface swing joint of upper end that impels the sheathed tube, impel the inside threaded main part connecting rod that cup joints of sheathed tube, the stopper cover is in the outside of threaded main part connecting rod, the stopper is located propulsion sheathed tube lower part, the upper end of controlling the handle is connected to the lower extreme of threaded main part connecting rod.

Preferably, the outer surface of the lower end of the connecting rod, which is close to the side wall, is welded with a first circular ring, the outer surface of the upper end of the propelling sleeve, which is close to the side wall, is welded with a second circular ring, and the first circular ring and the second circular ring are mutually sleeved, so that the connecting rod is movably connected with the propelling sleeve.

Preferably, the variable folding restorer comprises two steel plates with the same size and a connecting piece connected between the two steel plates, the two steel plates are movably connected through the connecting piece, the length of each steel plate is 0.5-0.7cm, the width of each steel plate is 0.5-0.7cm, the thickness of each steel plate is 0.14-0.16cm, and the four corners of each steel plate are designed into circular arcs.

Preferably, the variable folding restorer is of a hinge structure, the connecting piece is a hinge shaft, and the hinge shaft of the variable folding restorer is fixedly connected with the upper end of the supporting steel plate.

Preferably, the solid steel bar consists of a smooth solid bar and a solid bar with external threads, the solid bar with external threads is positioned at the lower end of the smooth solid bar, the total length of the solid steel bar is 25-35cm, the diameter of the smooth solid bar is 0.18-0.22cm, and the diameter of the solid bar with external threads is 0.20-0.24 cm.

Preferably, the support steel plate has a length of 0.8-1.2cm, a width of 0.18-0.22cm, and a thickness of 0.09-0.11 cm.

Preferably, the outer diameter of the propelling sleeve is 0.38-0.42cm, the length of the propelling sleeve is 18-22cm, the inner cavity of the propelling sleeve is processed into a small inner diameter cavity and a large inner diameter cavity, the small inner diameter cavity and the large inner diameter cavity are connected in a penetrating manner, the inner diameter of the small inner diameter cavity is 0.19-0.23cm, and the inner diameter of the large inner diameter cavity is 0.21-0.25 cm.

Preferably, the stop is a cylinder with an internally threaded bore, and twisting the stop limits the position of the push sleeve.

Preferably, the holding handle is a cylinder with a diameter of 1.8-2.2cm and a length of about 1.8-2.2 cm.

Compared with the prior art, the utility model has the advantages of it is following: the variable repositor can reach the position where the fracture collapses through relatively narrow windowing, and then the repositioning area is increased, so that ideal repositioning is achieved, artificial bone loss caused by large windowing is avoided, and further guarantee is provided for the subsequent steps of the operation.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic view of the working state structure of the repositor of the present invention;

fig. 2 is a schematic structural diagram of the repositor in a non-working state;

FIG. 3 is an enlarged view of A in FIGS. 1 and 2;

fig. 4 is a schematic structural diagram of a first ring of the present invention;

fig. 5 is a top view of the variable folding repositor of the present invention in a disassembled state;

fig. 6 is a front view of the variable folding restorer of the present invention in an operating state;

FIG. 7 is a connection diagram of the variable folding restorer of the present invention in an operating state;

fig. 8 is a schematic structural view of the propulsion sleeve of the present invention;

wherein: 1-a variable folding restorer, 11-a steel plate, 2-a connecting rod, 3-a threaded main body connecting rod, 31-a solid steel rod, 32-a supporting steel plate, 311-a smooth solid rod, 312-a solid rod with external threads, 4-a pushing sleeve, 41-a small inner diameter cavity, 42-a large inner diameter cavity, 5-a limiter, 6-a holding handle, 7-a hinge shaft, 81-a ring I, 82-a ring II and 9-a slit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1 and 2, the repositor for tibial plateau compressive fracture comprises a variable folding repositor 1, two connecting rods 2, a threaded main body connecting rod 3, a pushing sleeve 4, a limiting stopper 5 and a holding handle 6, wherein the threaded main body connecting rod 3 consists of a solid steel rod 31 and a supporting steel plate 32 positioned at the top end of the solid steel rod, two ends of the lower part of the variable folding repositor 1 are hinged to the upper end of the connecting rods 2 respectively, the lower end of the connecting rods 2 is movably connected with the upper end of the pushing sleeve 4, the threaded main body connecting rod 3 is sleeved inside the pushing sleeve 4, the limiting stopper 5 is sleeved outside the threaded main body connecting rod 3, the limiting stopper 5 is positioned at the lower part of the pushing sleeve 4, and the lower end of the threaded main body connecting rod 3 is connected with the upper end of the holding handle.

Referring to fig. 3 and 4, in the utility model discloses in the welding of lateral wall department is close to the lower extreme surface of connecting rod 2 has a ring 81, the welding of lateral wall department is close to the upper end surface of advancing sleeve pipe 4 has a ring two 82, ring one 81 with ring two 82 cup joints each other to with connecting rod 2 and advancing sleeve pipe 4 swing joint. In this embodiment, the first ring 81 and the second ring 82 actually adopt an annular structure in which the thin steel wire is bent, wherein the first ring 81 has a slit 9, and the diameters of the first ring 81 and the second ring 82 are larger than the diameter of the thin steel wire. In the specific operation, after the two end points of the slit position of the first ring 81 penetrate through the second ring 82, the slit 9 is closed in a manual closing or spot welding mode, and the movable connection of the first ring 81 and the second ring 82 is realized. In addition, the arrangement of the first ring 81 and the second ring 82 is only convenient for the movable connection of the connecting rod 2 and the pushing sleeve 4, and does not affect the stability of the whole restorer structure.

Referring to fig. 5, 6 and 7, the variable folding restorer 1 comprises two steel plates 11 with the same size and a connecting piece connected between the two steel plates 11, the two steel plates 11 are movably connected through the connecting piece, the length of each steel plate 11 is 0.5-0.7cm, the width of each steel plate 11 is 0.5-0.7cm, the thickness of each steel plate 11 is 0.14-0.16cm, and four corners of each steel plate 11 are designed to be circular arcs. In this embodiment, the variable folding restorer 1 is of a detachable hinge structure, the connecting piece is a hinge shaft 7, the hinge shaft 7 is movably connected with the two steel plates 11 to form a horizontal plane, and the hinge shaft 7 does not affect the folding and unfolding of the variable folding restorer 1. To facilitate folding and unfolding of the variable folding restorer 1, the hinge shaft 7 is welded to the upper end of the support steel plate 32.

In this embodiment, the support steel plate 32 has a length of 1cm, a width of 0.2cm, and a thickness of 0.1 cm; the solid steel bar 31 is composed of a smooth solid bar 311 and a solid bar 312 with external threads, the solid bar 312 with external threads is located at the lower end of the smooth solid bar 311, wherein the smooth solid bar 311 is 0.18cm in diameter and 18cm in length, and the solid bar 312 with external threads is 0.2cm in diameter and 12m in length.

Referring to fig. 8, the pusher sleeve 4 is a hollow cylinder with an outer diameter of 0.4cm and a length of 20 cm. In order to facilitate the pushing of the pushing sleeve 4, the inner cavity of the pushing sleeve 4 needs to be processed into a small inner diameter cavity 41 and a large inner diameter cavity 42, and the small inner diameter cavity 41 and the large inner diameter cavity 42 are connected in a penetrating manner to form an integrated structure.

In order to make the utility model discloses the structure is more stable, and little internal diameter cavity 41 corresponds and laminates with smooth solid stick 311, and the internal diameter of little internal diameter cavity 41 slightly is greater than the internal diameter of smooth solid stick 311, and big internal diameter cavity 42 corresponds and laminates with having external screw thread solid stick 312, and the internal diameter of big internal diameter cavity 42 slightly is greater than the diameter that has external screw thread solid stick 312. In this embodiment, the small inner diameter cavity 41 has an inner diameter of 0.2cm and a length of 15cm, and the large inner diameter cavity 42 has an inner diameter of 0.21cm and a length of 5 cm.

Specifically, in actual operation, the large inner diameter cavity 42 can freely move up and down on the external thread solid rod 312 for propulsion, the final position of the large inner diameter cavity 42 in movement cannot exceed the top end edge of the external thread solid rod 312, the position at this position is also the position of the repositor in a working state, and the highest position of the large inner diameter cavity 42 in movement cannot exceed the top end edge of the external thread solid rod 312; when the small inner diameter cavity 41 is pushed up and down along with the push sleeve 4, the influence of the outer wall of the smooth solid rod 311 is avoided.

In this embodiment, the specific processing procedures of the small inner diameter cavity 41 and the large inner diameter cavity 42 of the push sleeve 4 are as follows: by setting the focal length and the output energy of the laser puncher, the punching is performed at the center position of the upper surface of the pusher sleeve 4, with the inner diameter of the hole being 0.2cm and the depth being 15cm (small inner diameter cavity 41), and then at the center position of the bottom surface of the pusher sleeve 4, with the inner diameter of the hole being 0.21cm and the depth being 5cm (large inner diameter cavity 42).

In this embodiment, the grip handle 6 is a cylinder having a diameter of 2cm and a length of about 2 cm.

In order to fix the position of the variable folding restorer 1, the connecting rod 2 and the propelling sleeve 4, the utility model discloses a stopper 5 with an internal screw hole structure, the size of the screw hole is matched with the external thread solid bar 312. When the device is used, the position of the threaded main body connecting rod 3 is twisted to enable the position limiter 5 to be attached to the pushing sleeve 4, and the purposes of limiting the position and fixing are achieved.

Taking Schatzker type ii (split compression fracture of outer platform) as an example, the specific implementation process of the utility model is (simulation operation record): the patient lies on the back, after the anesthesia takes effect, the patient is disinfected by a conventional drape, a skin protection film is adhered, an arc incision on the front outer side of the tibia is taken, the length of the arc incision is about 20cm, a skin subcutaneous deep fascia is cut layer by layer, the tibialis anterior muscle is separated along the tibial crest, the arc incision is separated layer by layer to the proximal end of the bone surface, the joint capsule is opened on the outer side, the outer meniscus is exposed, the meniscus is pulled to the proximal end, the outer platform is split and collapsed, the fracture end is cleaned, the fracture end of the split fracture is reset, a point type reduction forceps is temporarily fixed, the tibia distal end is windowed, a restorer is inserted into the collapsed position, a pushing sleeve 4 is pushed, the position of a connecting rod 2 is adjusted, the folded part of a variable restorer 1 is opened, then a limiting stopper 5 is twisted to fix the pushing sleeve 4 at the working position, a holding handle 6 is knocked to reset the collapsed fracture surface. After the resetting is finished, the limiting device 5 is reversely twisted, the pushing sleeve 4 is withdrawn, and the opened variable folding resetting device 1 is folded again through the connecting rod 2, so that the operation is withdrawn. The allogeneic bone is placed at the rear part, the bone grafting support is assisted by the aid of the reusable restorer to support the collapsed fracture, when a small space is left, the restorer can be used for operating in a non-working state, after the bone grafting is satisfied, the joint surface is well restored in perspective, the outer side is taken down to be fixed by an anatomical locking steel plate, screws are screwed in sequence, the fracture is well restored in perspective, a large amount of saline water is washed, and the fracture is sutured layer by layer.

To sum up, the utility model relates to a simply ingenious, with low costs, make the process of resetting become simple, safety reduces the vice damage and the relevant complication of operation among the operation process to make follow-up operation process accomplish smoothly.

The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to the above-described embodiments may be made, and the generic principles defined herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications to the present invention according to the disclosure of the present invention within the protection scope of the present invention.

Claims

1. The restorer for tibial plateau compressive fracture is characterized by comprising a variable folding restorer (1), two connecting rods (2), a threaded main body connecting rod (3), a propelling sleeve (4), a limiting stopper (5) and a holding handle (6), wherein the threaded main body connecting rod (3) consists of a solid steel bar (31) and a supporting steel plate (32) positioned at the top end of the solid steel bar, the two ends of the lower part of the variable folding restorer (1) are movably connected with the upper ends of the two connecting rods (2) respectively, the lower ends of the two connecting rods (2) are movably connected with the outer surface of the upper end of the propelling sleeve (4) respectively, the threaded main body connecting rod (3) is sleeved inside the propelling sleeve (4), the limiting stopper (5) is sleeved outside the threaded main body connecting rod (3), and the limiting stopper (5) is positioned at the lower part of the propelling sleeve (4), the lower end of the threaded main body connecting rod (3) is connected with the upper end of a holding handle (6).

2. The repositor for tibial plateau compression fractures according to claim 1, wherein a first ring (81) is welded on the outer surface of the lower end of the connecting rod (2) close to the side wall, a second ring (82) is welded on the outer surface of the upper end of the push sleeve (4) close to the side wall, and the first ring (81) and the second ring (82) are sleeved with each other so as to movably connect the connecting rod (2) with the push sleeve (4).

3. The repositor for tibial plateau compression fractures according to claim 2, characterized in that the variable-fold repositor (1) comprises two steel plates (11) of equal size and a connecting piece connected between the two steel plates (11), the two steel plates (11) are movably connected through the connecting piece, the steel plates (11) have a length of 0.5-0.7cm, a width of 0.5-0.7cm and a thickness of 0.14-0.16cm, and the four corners of the steel plates (11) are designed as circular arcs.

4. The repositor for tibial plateau compressive fractures according to claim 3, wherein the variable folding repositor (1) is of a hinge structure, the connecting piece is a hinge shaft (7), and the hinge shaft (7) of the variable folding repositor (1) is fixedly connected with the upper end of the support steel plate (32).

5. The repositor for tibial plateau compression fractures according to claim 4, wherein the solid steel rod (31) consists of a smooth solid rod (311) and an externally threaded solid rod (312), the externally threaded solid rod (312) being located at the lower end of the smooth solid rod (311), the solid steel rod (31) having an overall length of 25-35cm, the smooth solid rod (311) having a diameter of 0.18-0.22cm, the externally threaded solid rod (312) having a diameter of 0.20-0.24 cm.

6. The repositor for tibial plateau compression fractures according to claim 5, wherein the support steel plate (32) has a length of 0.8-1.2cm, a width of 0.18-0.22cm, and a thickness of 0.09-0.11 cm.

7. The repositor for tibial plateau compression fractures according to claim 6, wherein the outer diameter of the push sleeve (4) is 0.38-0.42cm and the length is 18-22cm, the inner cavity of the push sleeve (4) is formed into a small inner diameter cavity (41) and a large inner diameter cavity (42), the small inner diameter cavity (41) and the large inner diameter cavity (42) are connected in a penetrating manner, the inner diameter of the small inner diameter cavity (41) is 0.19-0.23cm, and the inner diameter of the large inner diameter cavity (42) is 0.21-0.25 cm.

8. The reduction device for tibial plateau compression fractures according to claim 7, characterized in that the stop (5) is a cylinder with an internally threaded hole, the twist stop (5) limiting the position of the push sleeve (4).

9. The repositor for tibial plateau compression fractures according to claim 8, wherein the gripping handle (6) is a cylinder having a diameter of 1.8-2.2cm and a length of about 1.8-2.2 cm.