CN219557517U - Combined door opening plate - Google Patents

Abstract

The utility model discloses a combined door opening plate, which belongs to the technical field of medical equipment, and comprises a vertebral plate end fixing plate and a side block end fixing plate, wherein the vertebral plate end fixing plate comprises a first transverse plate body and a first inclined plate body, the side block end fixing plate comprises a second transverse plate body and a second inclined plate body positioned above the second transverse plate body, and nail holes for passing vertebral plate screws are formed in the first transverse plate body and the second transverse plate body; the first inclined plate body and the second inclined plate body are oppositely arranged, one of the two inclined plate bodies is provided with a sliding groove, the other inclined plate body is provided with a sliding rail matched with the sliding groove, and the side surface of the sliding groove is provided with a mounting notch, so that the vertebral plate end fixing plate and the lateral block end fixing plate can be assembled in a minimum height state after being respectively implanted into a body; the combined type opening plate further comprises a locking limiting structure used for locking the relative positions of the first inclined plate body and the second inclined plate body. The combined type door opening plate has small surgical incision and can avoid cervical axial symptoms.

Description

Combined door opening plate

Technical Field

The utility model relates to the technical field of orthopedic implants, in particular to a combined type opening plate.

Background

Spinal canal (human nervous system through passage) stenosis is a common disease whose clinical characteristics manifest neuralgia, myalgia, dyskinesia, etc., seriously affecting quality of life and even causing paralysis. For the diseases, a treatment method commonly used in modern clinical treatment is called laminoplasty, and the titanium plate with the door is used as an internal fixture commonly used in the laminoplasty, so that the effects of repairing the defects of the vertebrae, relieving the pressure of the vertebral canal and the like can be effectively achieved. According to the different ways of incision, laminoplasty is divided into a single-door and a double-door.

The single open surgery is to cut one side of the posterior lamina of the spine, then to pierce the incision to turn the posterior lamina to the opposite side to form an "open door", and due to the asymmetry of the single open door, the connection of the posterior traction ligament and bone tissue needs to be cut off, the phenomena of chronic pain, stiffness, heaviness and limited cervical vertebra movement of the neck, shoulder and back can occur after the surgery, the occurrence rate is 45% -80%, and the phenomenon is defined as cervical vertebra axiality symptom.

Because of individual difference, the fixed length titanium plate that opens the door, the condition that the angle of opening the door is insufficient or strut the height is not enough probably can appear in the art, influences the effect that the vertebral canal opened the door, lets the decompression of vertebral canal unable satisfactory effect of obtaining to the fixed length titanium plate that opens the door also can't implant the human body through less operation incision, causes great muscle damage. To solve the above-mentioned problems, the prior art (for example, patent applications CN210384023U and CN 216294228U) discloses a height-adjustable open door titanium plate, but research has found that the existing height-adjustable open door titanium plate needs to be implanted integrally when implanted in the body, and still needs a large surgical incision.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a combined type opening plate which is small in operation incision and can avoid cervical vertebra axiality symptoms.

In order to solve the technical problems, the utility model provides the following technical scheme:

a modular door opening plate comprising a lamina end fixing plate and a lateral mass end fixing plate, wherein:

the vertebral plate end fixing plate comprises a first transverse plate body and a first oblique plate body positioned below the first transverse plate body, the side block end fixing plate comprises a second transverse plate body and a second oblique plate body positioned above the second transverse plate body, and nail holes are formed in the first transverse plate body and the second transverse plate body;

the first inclined plate body and the second inclined plate body are oppositely arranged, one of the first inclined plate body and the second inclined plate body is provided with a sliding groove, the other one of the first inclined plate body and the second inclined plate body is provided with a sliding rail matched with the sliding groove, and the side surface of the sliding groove is provided with an installation notch, so that the vertebral plate end fixing plate and the lateral block end fixing plate can be assembled in a minimum height state after being respectively implanted into a body;

the combined door opening plate further comprises a locking limiting structure used for locking the relative positions of the first inclined plate body and the second inclined plate body.

Further, the first inclined plate body is provided with the sliding groove, the second inclined plate body is provided with the sliding rail, and the mounting notch is located on the inner side face of the sliding groove.

Further, a pair of holding arms are arranged on two sides of the tail end of the first inclined plate body, the sliding groove is formed between the pair of holding arms, and the second inclined plate body is used as the sliding rail.

Further, the tail ends of the pair of holding arms are oppositely provided with anti-falling ribs, and the mounting notch is formed between the anti-falling ribs;

the two sides of the second inclined plate body are respectively provided with an anti-falling groove which extends along the length direction of the second inclined plate body and is matched with the anti-falling convex rib, and one end of the anti-falling groove, which is close to the second transverse plate body, is provided with an assembling inlet for the anti-falling convex rib to be installed in.

Further, be equipped with on the first slant plate body along its length direction extension's elasticity card, locking limit structure is including being located the terminal inboard elasticity hook tooth of elasticity card and be located the external side surface of second slant plate is followed second slant plate body length direction is arranged and with elasticity hook tooth matched with location tooth, wherein:

the positioning teeth are inverted teeth inclined towards the tail end of the second inclined plate body;

and/or a pair of slots extending along the length direction of the first inclined plate body are formed in the first inclined plate body, so that the elastic card is formed between the pair of slots, and the fixed end of the elastic card is close to the first transverse plate body.

Further, the first inclined plate body is provided with a sliding groove extending along the length direction of the first inclined plate body, a threaded column which is used for being connected in the sliding groove in a sliding mode is arranged at the position, corresponding to the sliding groove, of the tail end of the second inclined plate body, and the locking limiting structure is a locking nut which is arranged on the threaded column.

Further, the first inclined plate body is provided with a sliding groove extending along the length direction of the first inclined plate body, a threaded hole is formed in the position, corresponding to the sliding groove, of the tail end of the second inclined plate body, and the locking limiting structure is a locking screw installed in the threaded hole.

Further, a sliding groove extending along the length direction of the first inclined plate body is formed in the first inclined plate body, a sliding block is arranged at the position, corresponding to the sliding groove, of the tail end of the second inclined plate body, the sliding block comprises a base part and a sliding fit part positioned in the middle of the upper part of the base part, and the width of the base part is larger than that of the sliding fit part;

the sliding grooves comprise a first sliding groove which is positioned inwards and matched with the base part and a second sliding groove which is positioned outwards and matched with the sliding matching part;

a transverse mounting hole is formed in the base part in a penetrating manner along the width direction of the second inclined plate body, a pair of positioning pieces are arranged in the transverse mounting hole, and a plurality of positioning grooves which are arranged along the length direction of the first inclined plate body and matched with the outer side ends of the pair of positioning pieces are formed in the two inner side surfaces of the first sliding groove;

the sliding fit part is internally provided with a vertical mounting hole communicated with the transverse mounting hole, the vertical mounting hole is internally provided with a driving piece used for driving the inner side end parts of the pair of positioning pieces to enable the pair of positioning pieces to move outwards transversely so as to be matched with the positioning groove in a positioning way, and the locking limiting structure comprises the pair of positioning pieces, the positioning groove and the driving piece.

Further, the positioning piece comprises a top block, a wedge block and a spring, wherein the top block is positioned outwards and matched with the positioning groove, the wedge block is positioned inwards and is in pushing fit with the driving piece, and the spring is positioned between the top block and the wedge block;

and/or the vertical mounting hole is a threaded hole, and the driving piece comprises a screw connected in the threaded hole in a threaded way and a steel ball positioned below the screw and in pushing fit with the positioning piece;

and/or the positioning groove is a spherical groove, and the outer end part of the positioning piece is a sphere matched with the spherical groove;

and/or the two inner side surfaces of the first sliding groove are inclined surfaces.

Further, the joint of the first transverse plate body and the first inclined plate body and the joint of the second transverse plate body and the second inclined plate body are respectively provided with an instrument operation hole;

and/or a guide inclined plane is arranged at the assembling inlet;

and/or the nail holes on the first transverse plate body and the second transverse plate body are a pair of nail holes arranged side by side along the width direction;

and/or the nail holes on the first transverse plate body and the second transverse plate body are of spherical groove structures.

The utility model has the following beneficial effects:

compared with the prior art, the combined type opening plate has the advantages that the first inclined plate body of the vertebral plate end fixing plate and the second inclined plate body of the side block end fixing plate are relatively arranged, one of the two inclined plate bodies is provided with the sliding groove, the other inclined plate body is provided with the sliding rail matched with the sliding groove, the side surface of the sliding groove is provided with the mounting notch, so that the vertebral plate end fixing plate and the side block end fixing plate can be assembled in the minimum height state after being respectively implanted into the body; the combined type opening plate further comprises a locking limiting structure used for locking the relative positions of the first inclined plate body and the second inclined plate body, so that the relative positions of the first inclined plate body and the second inclined plate body can be conveniently locked in operation, and the height of the opening plate can be further locked. The combined type door opening plate has small surgical incision and can avoid cervical axial symptoms.

Drawings

Fig. 1 is a schematic overall structure of a combined door opening plate embodiment 1 of the present utility model;

FIG. 2 is a schematic perspective view of the lamina end plate of FIG. 1;

FIG. 3 is a schematic perspective view of the side block end fixing plate in FIG. 1;

fig. 4 is a schematic overall structure of a combined door opening plate according to embodiment 2 of the present utility model;

FIG. 5 is a schematic perspective view of the side block end fixing plate of FIG. 4;

FIG. 6 is a schematic view of the cage nut of FIG. 4, wherein (a) is a perspective view in one direction and (b) is a perspective view in another direction;

fig. 7 is a schematic overall structure of a combined door opening plate according to embodiment 3 of the present utility model;

FIG. 8 is a schematic perspective view of the side block end fixing plate of FIG. 7;

FIG. 9 is a schematic view of the locking screw of FIG. 7, wherein (a) is a perspective view in one direction and (b) is a perspective view in the other direction;

fig. 10 is a schematic overall structure of a combined door opening plate of embodiment 4 of the present utility model;

FIG. 11 is a schematic view of the lamina end plate of FIG. 10, wherein (a) is a perspective view in one direction and (b) is a perspective view in another direction;

FIG. 12 is a schematic view of the side block end fixing plate of FIG. 10, wherein (a) is a perspective view in one direction and (b) is a perspective view in the other direction;

fig. 13 is a schematic structural view of the side block end fixing plate of fig. 10, wherein (a) is a top view and (b) is a sectional view taken along A-A direction.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model provides a combined type opening plate (or I-shaped plate), which is shown in figures 1-13, and comprises a vertebral plate end fixing plate 1 and a lateral block end fixing plate 2, wherein:

the vertebral plate end fixing plate 1 comprises a first transverse plate body 11 and a first oblique plate body 12 positioned below the first transverse plate body 11, the lateral block end fixing plate 2 comprises a second transverse plate body 21 and a second oblique plate body 22 positioned above the second transverse plate body 21, and nail holes 13 and 23 for passing vertebral plate screws (not shown) are respectively formed in the first transverse plate body 11 and the second transverse plate body 21;

the first oblique plate body 12 and the second oblique plate body 22 are oppositely arranged, one of the two oblique plate bodies is provided with a sliding groove 14, the other oblique plate body is provided with a sliding rail 24 matched with the sliding groove 14, and the side surface of the sliding groove 14 is provided with an installation notch 15, so that the vertebral plate end fixing plate 1 and the lateral block end fixing plate 2 can be assembled in a minimum height state after being respectively implanted into a body;

the combined opening plate further comprises a locking and limiting structure for locking the relative positions of the first inclined plate body 12 and the second inclined plate body 22.

When in use, a user uses tools such as a drag hook to pierce along the gap between the multi-split muscle and the cervical half-spines and retract the muscle to expose one side of the vertebral plate, uses the tools to cut the vertebral plate, uses the tools such as a spreading clamp to slightly spread the vertebral plate, then uses the holding clamp to clamp the side block end fixing plate 2 with smaller volume to implant the side block end fixing plate along the gap between the multi-split muscle and the cervical half-spines, adjusts the gap to a proper angle to enable the nail hole 23 on the second transverse plate body 21 of the side block end fixing plate 2 to be attached on the side block, and holds the vertebral plate screw to pass through the nail hole 23 on the second transverse plate body 21 to lock the side block end fixing plate 2 on the side block, and then the vertebral plate end fixing plate 1 with larger clamping volume is implanted into the body along the gap between the multi-split muscle and the cervical half-spinus, and is adjusted to a proper angle, so that the vertebral plate end fixing plate 1 and the lateral block end fixing plate 2 are assembled in a minimum height state at the installation notch 15, a vertebral plate screw is held to penetrate through a nail hole 13 on a first transverse plate body 11 of the vertebral plate end fixing plate 1 to lock the vertebral plate end fixing plate 1 on the vertebral plate, then the relative positions of the first oblique plate body 12 and the second oblique plate body 22 are adjusted, the height of the opening plate is adjusted according to the bone structure of an actual patient, and finally the relative positions of the first oblique plate body 12 and the second oblique plate body 22 are locked by using a locking limiting structure, so that the height of the opening plate is locked.

Compared with the prior art, the combined type opening plate has the advantages that the first inclined plate body of the vertebral plate end fixing plate and the second inclined plate body of the side block end fixing plate are relatively arranged, one of the two inclined plate bodies is provided with the sliding groove, the other inclined plate body is provided with the sliding rail matched with the sliding groove, the side surface of the sliding groove is provided with the mounting notch, so that the vertebral plate end fixing plate and the side block end fixing plate can be assembled in the minimum height state after being respectively implanted into the body; the combined type opening plate further comprises a locking limiting structure used for locking the relative positions of the first inclined plate body and the second inclined plate body, so that the relative positions of the first inclined plate body and the second inclined plate body can be conveniently locked in operation, and the height of the opening plate can be further locked. The combined type door opening plate has small surgical incision and can avoid cervical axial symptoms. The utility model relates to a combined type opening plate which is suitable for cervical spine canal stenosis symptoms and multi-section spinal cord type cervical spondylosis and can reserve supraspinal ligaments and muscles.

As shown in fig. 2-3, it is preferable that the first oblique plate body 12 is provided with a chute 14, the second oblique plate body 22 is provided with a slide rail 24, and the mounting notch 15 is located on the inner side surface of the chute 14. In particular, a pair of arms 16 may be disposed on two sides of the end of the first oblique plate 12, and a chute 14 is formed between the pair of arms 16, and the second oblique plate 22 is used as a sliding rail 24.

Further, the ends of the pair of holding arms 16 may be provided with anti-falling ribs 17 relatively, and an installation gap 15 is formed between the anti-falling ribs 17; the two sides of the second oblique plate body 22 are respectively provided with an anti-falling groove 25 which extends along the length direction and is matched with the anti-falling convex rib 17, and one end of the anti-falling groove 25, which is close to the second transverse plate body 21, is provided with an assembling inlet 26 for the anti-falling convex rib 17 to be installed in, so that the first oblique plate body 12 and the second oblique plate body 22 are prevented from falling out in the relative sliding process. At this time, the retaining plate 1 is held by the holding plate pliers, and the anti-falling ribs 17 are slightly moved upwards after passing through the assembling inlet 26, so that the anti-falling ribs 17 are installed in the anti-falling grooves 25, and meanwhile, the assembling of the sliding grooves 14 and the sliding rails 24 is realized.

According to the different locking limit structures, the utility model can have the following embodiments:

example 1

As shown in fig. 1-3, the first oblique plate body 12 may be provided with an elastic card 19 extending along a length direction thereof, and the locking limiting structure includes an elastic hook tooth 191 located at an inner side of an end of the elastic card 19, and a positioning tooth 221 located at an outer side surface of the second oblique plate body 22 and aligned along the length direction of the second oblique plate body 22 and matched with the elastic hook tooth 191. The inner and outer parts are the inner side and the outer side of the human body and the human body. The resilient hooking teeth 191 in this embodiment cooperate with the positioning teeth 221 to facilitate intraoperative locking of the relative positions of the first oblique plate 12 and the second oblique plate 22.

The positioning teeth 221 may be inverted teeth inclined towards the end of the second inclined plate body 22, after the assembly of the two fixing plates is initially completed in operation, the elastic hook teeth 191 are slightly forced to slide along the inclined surface of the first inverted teeth smoothly beyond the first inverted teeth, at this time, the elastic hook teeth 191 and the inverted teeth form a ratchet mechanism, so that the lamina end fixing plate 1 can only slide upwards, that is, the first inclined plate body 12 and the second inclined plate body 22 can only slide towards the opening direction, the lamina end fixing plate 1 can be lifted step by step in operation, so that the lamina is lifted step to a proper height to increase the opening area of the vertebral canal, when the lamina end fixing plate 1 has a downward sliding trend, one side of the inverted teeth can prop against the elastic hook teeth 191, prevent backward movement and prevent structural failure, and further lock the relative positions of the lamina end fixing plate 1 and the lateral block end fixing plate 2.

To facilitate the formation of the elastic card 19, the first inclined plate body 12 may be provided with a pair of slots 121 extending along the length direction thereof, so that the elastic card 19 is formed between the pair of slots 121, and the fixed end of the elastic card 19 is preferably adjacent to the first transverse plate body 11.

Example 2

As shown in fig. 4 to 6, the first oblique plate body 12 may be provided with a sliding groove 13 'extending along a length direction thereof, and a threaded post 23' for sliding connection in the sliding groove 13 'is provided at a position corresponding to the sliding groove 13' at the end of the second oblique plate body 22, and the locking limit structure is a locking nut 24 'mounted on the threaded post 23'. The locking nut 24 'in the embodiment is matched with the threaded column 23', and the locking nut 24 'locks the threaded column 23' to lock the relative positions of the two fixing plates, so that the adjustable range is wider and bidirectional adjustment is realized. During the process of lifting the lamina end fixing plate 1 to a proper height in operation, the threaded column 23 'can slide along the sliding groove 13', after the lamina end fixing plate 1 is adjusted to a proper height, the contact surface of the locking nut 24 'is contacted with and pressed against the lamina end fixing plate 1 by rotating the locking nut 24', and the locking force generated in the process can lock the relative positions of the lamina end fixing plate 1 and the lateral mass end fixing plate 2.

The inner side surface of the lock nut 24' may be a friction contact surface 241' to enhance the locking force and firmly lock the relative positions of the lamina end fixing plate 1 and the lateral mass end fixing plate 2, and the friction contact surface 241' may be an anti-slip rib or a sand blast surface. The lock nut 24' may be hexagonal. The threads in the lock nut 24' may be generally triangular threads.

Example 3

As shown in fig. 7-9, the first oblique plate body 12 may be provided with a sliding groove 13 "extending along the length direction thereof, and the end of the second oblique plate body 22 corresponding to the sliding groove 13" is provided with a threaded hole 23", and the locking limiting structure is a locking screw 24" installed in the threaded hole 23 ". The locking screw 24 "in this embodiment is matched with the threaded hole 23", and the locking screw 24 "is used to lock the relative positions of the two fixing plates, so that the adjustable range is wider and bidirectional adjustment is achieved. During the process of lifting the lamina end fixing plate 1 to a proper height in operation, the locking screw 24 'can slide along the sliding groove 13', after the locking screw 24 'is adjusted to a proper height, the contact surface of the nail head of the locking screw 24' is contacted with the lamina end fixing plate 1 and is pressed tightly, and the locking force generated in the process can lock the relative positions of the lamina end fixing plate 1 and the lateral mass end fixing plate 2.

The inner side surface (contact surface) of the nail head of the locking screw 24 "may be a friction contact surface 241" to enhance the locking force, and firmly lock the relative positions of the lamina end fixing plate 1 and the lateral mass end fixing plate 2, and the friction contact surface 241 "may be specifically an anti-slip rib or a sand blast surface. The outer surface of the head of the locking screw 24 "may be provided with an instrument operating hole 242", and the instrument operating hole 242 "may be an inner hexagonal hole or a quincuncial hole. The threads on the shank of the locking screw 24 "may be generally triangular threads.

Example 4

As shown in fig. 10-13, the first oblique plate body 12 may be provided with a sliding groove 13' "extending along the length direction thereof, the end of the second oblique plate body 22 is provided with a sliding block 23 '" at a position corresponding to the sliding groove 13' ", the sliding block 23 '" comprises a base portion 231 ' "and a sliding fit portion 232 '" positioned at the upper middle portion of the base portion 231 ' ", and the width of the base portion 231 '" is larger than the width of the sliding fit portion 232 ' ";

the slide groove 13' "includes a first slide groove 131 '" positioned inward and engaged with the base portion 231 ' "and a second slide groove 132 '" positioned outward and engaged with the slide engaging portion 232 ' ";

a pair of positioning members are arranged in the transverse mounting hole 24 '"along the width direction of the second inclined plate body 22 in the base part 231'" and a plurality of positioning grooves 14 '"which are arranged along the length direction of the first inclined plate body 12 and matched with the outer side ends of the pair of positioning members are arranged on the two inner side surfaces of the first sliding groove 131'";

the sliding fit portion 232 '"is provided with a vertical mounting hole 25'" therein which is in communication with the transverse mounting hole 24 '", and the vertical mounting hole 25'" is provided with a driving member therein for driving the inner side ends of the pair of positioning members to move the pair of positioning members laterally outwardly for positioning fit with the positioning groove 14 '", and the locking limiting structure includes a pair of positioning members, the positioning groove 14'" and the driving member. The positioning piece, the positioning groove 14' "and the driving piece in the embodiment are matched, the driving piece drives the positioning piece to lock the relative positions of the two fixing plates, and the adjustable range is wider.

The positioning element can adopt various modes which are easily thought by the person skilled in the art, such as a positioning rod and the like, and the following structural form is preferably adopted for convenient implementation and improved positioning effect:

the positioning member may include a top block 26 '"positioned outwardly and engaged with the positioning slot 14'", a wedge block 27 '"positioned inwardly and in urging engagement with the driver, and a spring 28'" positioned between the top block 26 '"and the wedge block 27'".

The driving member may be in various manners as will be apparent to those skilled in the art, such as a screw, etc., and for convenience of implementation and improvement of driving effect, the following structural forms are preferably adopted:

the vertical mounting hole 25 '"may be a threaded hole, and the driving member includes a screw 29'" screwed in the threaded hole, and a steel ball 30 '"located below the screw 29'" and in pushing engagement with the positioning member.

The positioning groove 14' "can be a spherical groove, and the outer end part of the positioning piece is a spherical shape matched with the spherical groove. The two inner sides of the first sliding groove 131 '"may be inclined surfaces such that the lamina end fixing plate 1 may only slide upward in one direction before the screw 29'" is not fully locked, and the lamina end fixing plate 1 may be lifted step by step during the operation, thereby raising the lamina step by step to a proper height.

In summary, the use process of the locking and limiting structure in this embodiment may refer to the following:

before the screw 29 ' "is not fully locked, the sliding block 23 '" can be matched with the positioning groove 14 ' "on the inclined surface through the steel ball 30 '" so that the lamina end fixing plate 1 can only slide upwards in one direction, at the moment, the jacking block 26 ' "is matched with the wedge-shaped block 27 '" through the spring 28 ' ", the jacking block 26 '" can move back and forth against the spring 28 ' ", the height adjustment of the lamina end fixing plate 1 and the side block end fixing plate 2 can be realized, so that the opening effect is realized, when the screw 29 '" is adjusted to a proper position, the steel ball 30 ' "presses the wedge-shaped block 27 '" to move towards two sides to compress the jacking block 26 ' ", and the outer end part of the jacking block 26 '" is matched with the positioning groove 14 ' "so as to be locked in the current gear.

In the above embodiments, as shown in fig. 1, 4, 7 and 10, the connection between the first transverse plate 11 and the first oblique plate 12 and the connection between the second transverse plate 21 and the second oblique plate 22 may be provided with instrument operation holes (may be oblong holes) 10, 20, so as to facilitate instrument operation, and at this time, a tool may be inserted into the two instrument operation holes 10, 20 to lift the lamina end fixing plate 1. The fitting inlet 26 may be provided with a guide slope, and the guide slope may include a first guide surface 27 and a second guide surface 28 in particular, so that the anti-falling rib 17 is fitted into the anti-falling groove 25 along the fitting inlet 26.

The nail holes 13, 23 on the first transverse plate 11 and the second transverse plate 21 may be a pair of nail holes arranged side by side in the width direction, so as to improve fixation firmness. The nail holes 13, 23 on the first transverse plate 11 and the second transverse plate 21 are preferably spherical groove structures.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims (10)

1. The utility model provides a combination formula division board which characterized in that includes vertebral plate end fixed plate and side piece end fixed plate, wherein:

the vertebral plate end fixing plate comprises a first transverse plate body and a first oblique plate body positioned below the first transverse plate body, the side block end fixing plate comprises a second transverse plate body and a second oblique plate body positioned above the second transverse plate body, and nail holes are formed in the first transverse plate body and the second transverse plate body;

the first inclined plate body and the second inclined plate body are oppositely arranged, one of the first inclined plate body and the second inclined plate body is provided with a sliding groove, the other one of the first inclined plate body and the second inclined plate body is provided with a sliding rail matched with the sliding groove, and the side surface of the sliding groove is provided with an installation notch, so that the vertebral plate end fixing plate and the lateral block end fixing plate can be assembled in a minimum height state after being respectively implanted into a body;

the combined door opening plate further comprises a locking limiting structure used for locking the relative positions of the first inclined plate body and the second inclined plate body.

2. The combined type door opening plate according to claim 1, wherein the sliding groove is formed in the first inclined plate body, the sliding rail is arranged in the second inclined plate body, and the installation notch is located on the inner side face of the sliding groove.

3. The combination type opening door plate according to claim 2, wherein a pair of holding arms are arranged on two sides of the tail end of the first inclined plate body, the sliding groove is formed between the pair of holding arms, and the second inclined plate body is used as the sliding rail.

4. The combined type door opening plate according to claim 3, wherein the tail ends of the pair of holding arms are oppositely provided with anti-falling ribs, and the mounting notch is formed between the anti-falling ribs;

the two sides of the second inclined plate body are respectively provided with an anti-falling groove which extends along the length direction of the second inclined plate body and is matched with the anti-falling convex rib, and one end of the anti-falling groove, which is close to the second transverse plate body, is provided with an assembling inlet for the anti-falling convex rib to be installed in.

5. The combined type door opening plate according to claim 1, wherein the first oblique plate body is provided with an elastic clamping piece extending along the length direction of the first oblique plate body, the locking limiting structure comprises elastic hook teeth positioned at the inner side of the tail end of the elastic clamping piece, and positioning teeth positioned on the outer side surface of the second oblique plate body and arranged along the length direction of the second oblique plate body and matched with the elastic hook teeth, wherein:

the positioning teeth are inverted teeth inclined towards the tail end of the second inclined plate body;

and/or a pair of slots extending along the length direction of the first inclined plate body are formed in the first inclined plate body, so that the elastic card is formed between the pair of slots, and the fixed end of the elastic card is close to the first transverse plate body.

6. The combined type door opening plate according to claim 1, wherein the first inclined plate body is provided with a sliding groove extending along the length direction of the first inclined plate body, a threaded column for sliding connection in the sliding groove is arranged at the position, corresponding to the sliding groove, of the tail end of the second inclined plate body, and the locking limiting structure is a locking nut installed on the threaded column.

7. The combined type door opening plate according to claim 1, wherein the first inclined plate body is provided with a sliding groove extending along the length direction of the first inclined plate body, a threaded hole is formed in the position, corresponding to the sliding groove, of the tail end of the second inclined plate body, and the locking limiting structure is a locking screw installed in the threaded hole.

8. The combined type door opening plate according to claim 1, wherein a sliding groove extending along the length direction of the first inclined plate body is formed in the first inclined plate body, a sliding block is arranged at the position, corresponding to the sliding groove, of the tail end of the second inclined plate body, the sliding block comprises a base portion and a sliding fit portion located in the middle of the upper portion of the base portion, and the width of the base portion is larger than that of the sliding fit portion;

the sliding grooves comprise a first sliding groove which is positioned inwards and matched with the base part and a second sliding groove which is positioned outwards and matched with the sliding matching part;

a transverse mounting hole is formed in the base part in a penetrating manner along the width direction of the second inclined plate body, a pair of positioning pieces are arranged in the transverse mounting hole, and a plurality of positioning grooves which are arranged along the length direction of the first inclined plate body and matched with the outer side ends of the pair of positioning pieces are formed in the two inner side surfaces of the first sliding groove;

the sliding fit part is internally provided with a vertical mounting hole communicated with the transverse mounting hole, the vertical mounting hole is internally provided with a driving piece used for driving the inner side end parts of the pair of positioning pieces to enable the pair of positioning pieces to move outwards transversely so as to be matched with the positioning groove in a positioning way, and the locking limiting structure comprises the pair of positioning pieces, the positioning groove and the driving piece.

9. The combination opening and closing plate according to claim 8, wherein the positioning member includes a top block positioned outwardly and engaged with the positioning groove, a wedge block positioned inwardly and engaged with the driving member by pushing, and a spring positioned between the top block and the wedge block;

and/or the vertical mounting hole is a threaded hole, and the driving piece comprises a screw connected in the threaded hole in a threaded way and a steel ball positioned below the screw and in pushing fit with the positioning piece;

and/or the positioning groove is a spherical groove, and the outer end part of the positioning piece is a sphere matched with the spherical groove;

and/or the two inner side surfaces of the first sliding groove are inclined surfaces.

10. The combination opening and closing plate according to claim 4, wherein the connection of the first transverse plate body and the first oblique plate body and the connection of the second transverse plate body and the second oblique plate body are provided with instrument operation holes;

and/or a guide inclined plane is arranged at the assembling inlet;

and/or the nail holes on the first transverse plate body and the second transverse plate body are a pair of nail holes arranged side by side along the width direction;

and/or the nail holes on the first transverse plate body and the second transverse plate body are of spherical groove structures.