CN211355827U

CN211355827U - Internal fixing plate for complicated acetabular fracture involving tetragonal body

Info

Publication number: CN211355827U
Application number: CN201922265805.XU
Authority: CN
Inventors: 邹昌; 方跃; 杨云; 秦伟铖
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-28
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses an internal fixation plate that is used for involving complicated acetabular bone fracture of tetragonal body, include: the reconstruction plate is transversely and flexibly arranged, the bending shape of the reconstruction plate is matched with the bending shape of the corresponding position of the hip bone, the reconstruction plate is provided with a fixing hole, the upper end of the reconstruction plate is provided with a side branch, the side branch is provided with a side branch fixing hole and fixedly connected with the reconstruction plate, the support plate is obliquely arranged, the shape of the support plate is matched with the shape of the corresponding position of the hip bone, the upper end of the support plate is fixedly connected with the lower edge of the reconstruction plate, and the support plate is provided with a temporary fixing hole and a universal fixing hole. The internal fixing plate does not need to be spliced, is firm in fixation, good in stability and unified in structure, achieves relatively consistent effects when used by different operators, is beneficial to evaluation and comparison of normalization and clinical effects of clinical treatment, and is good in compatibility with human tissues and small in electrolytic reaction.

Description

Internal fixing plate for complicated acetabular fracture involving tetragonal body

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to an inner fixed plate for involving complicated acetabular bone fracture of tetragonal body.

Background

The acetabulum tetragonal body is also called as a square area, which is a quadrilateral area formed by the inward turning of a bone body behind an acetabulum fossa and forms the innermost side wall of the acetabulum. The upper border is an arcuate line, the lower border is the upper edge of the ischial tuberosity at the bottom of the ischial vertical body, the front border is the rear edge of the obturator foramen, and the rear border is the greater incisional trace of the ischial bones.

The acetabulum tetragonal body is weak in bone, lateral violence is conducted through femoral head to easily cause central dislocation of femoral head, and pelvic organ and peripheral important blood vessel and nerve can be injured in severe cases, which is more common in osteoporosis people.

The acetabulum fracture is violent, the fracture is complex, the treatment is difficult and the disability rate is high. The key point of treatment is to achieve satisfactory reduction, stable internal fixation and early functional exercise as much as possible. The existing common treatment methods for acetabular fracture can be roughly divided into lag screw fixation and plate screw internal fixation, but the lag screw has the risk of mistakenly entering the hip joint, so that the technical requirements on an operator are high, and the method is only suitable for simple acetabular fracture with unobvious displacement. For complex acetabular fractures, plate screw internal fixation remains the primary method of treatment.

At present, no internal fixing material specially for acetabulum comminuted fracture accompanied with tetragonal fracture exists clinically, an operator can only use plates at other parts for splicing and combining, on one hand, the operation time is wasted, and the fixing strength is not enough, on the other hand, different doctors combine the plates according to self understanding, the combination plates are not unified, and the fixing effect can be different from person to person.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an inner fixed plate that is used for the complicated acetabular bone fracture of the square body that reaches, this inner fixed plate need not piece together, and is fixed firm, and stability is good, and the structure is unified, and the effect that different art people used and reach is unanimous relatively, helps clinical treatment's standardization and clinical effect aassessment to compare, and is better with human tissue compatibility, and electrolytic reaction is little.

In order to achieve the above object, the present invention provides an inner fixing plate for complicated acetabular fracture involving a tetragonal body, comprising: a reconstruction plate and a support plate; the reconstruction plate is transversely and flexibly arranged, the bending shape of the reconstruction plate is matched with the bending shape of the corresponding position of the hip bone, the reconstruction plate is provided with a fixing hole, the upper end of the reconstruction plate is provided with a side branch, the side branch is provided with a side branch fixing hole and fixedly connected with the reconstruction plate, the supporting plate is obliquely arranged, the shape of the supporting plate is matched with the shape of the corresponding position of the hip bone, the upper end of the supporting plate is fixedly connected with the lower edge of the reconstruction plate, and the supporting plate is provided with a temporary fixing hole and a universal fixing hole.

Preferably, the fixing holes are at least two.

Further, the fixing holes are evenly arranged on the reconstruction plate in the transverse direction.

Preferably, there are at least two of said side branches.

Preferably, the temporary fixing holes are in a key shape and are vertically arranged on the support plate along the support plate.

Further, the temporary fixing holes are at least two.

Preferably, the universal fixing hole has an hourglass shape.

Furthermore, the universal fixing holes are at least two.

Preferably, the fixing hole, the side branch fixing hole, the temporary fixing hole and the universal fixing hole are all through holes.

Preferably, the reconstruction plate, the support plate and the side branch are made of titanium alloy.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model can be directly used by shaping in advance, can better fit the bone surface, saves the operation time, and can be pruned according to the actual requirement;

2. the fracture block can be accurately positioned;

3. the fixing is firm without splicing and has good stability;

4. the structure is uniform, and the normalization of clinical treatment and the evaluation of clinical effect are facilitated;

5. the utility model adopts titanium alloy material, which has better compatibility with human tissue and small electrolytic reaction.

Drawings

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

in the figure: 1-reconstruction plate, 2-fixing hole, 3-side branch fixing hole, 4-side branch, 5-support plate, 6-temporary fixing hole and 7-universal fixing hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the internal fixation plate for complicated acetabular fracture involving the tetragonal body of the present invention mainly comprises a reconstruction plate 1 and a support plate 5; the reconstruction plate 1 is transversely and curvedly arranged on the inner side of the true pelvic edge, namely the inner wall surface of a square, from the sacroiliac joint to the pubic tubercle, the curvature shape of the reconstruction plate 1 is matched with the curvature shape of the corresponding position of the hip bone, the reconstruction plate 1 is provided with at least two fixing holes 2, the fixing holes 2 are transversely and uniformly arranged on the reconstruction plate 1 and are used for fixing the reconstruction plate 1 on the inner wall surface of the square, the upper end of the reconstruction plate 1 is provided with a side branch 4, the side branch 4 is provided with a side branch fixing hole 3, the side branch fixing hole 3 is used for fixing the side branch 4 above the true pelvic edge, the side branch 4 is fixedly connected with the reconstruction plate 1, the support plate 5 is obliquely arranged, the support plate 5 is positioned from the rear edge of the square to the ischial body, the shape of the support plate 5 is matched with the shape of the corresponding position of the hip bone, the upper end of the support plate 5 is fixedly connected with, the temporary fixing hole 6 is used for temporarily fixing a fracture block, and after the position of the fracture block is adjusted, the fracture block is finally fixed through the universal fixing hole 7.

The operation process is as follows: firstly, trimming a reconstruction plate 1 and a support plate 5 according to actual requirements, then placing the reconstruction plate 1 and the support plate 5 at corresponding positions of a hip bone, carrying out micro-adjustment on the positions according to actual fracture conditions, lifting the downwards moved fracture block through a temporary fixing hole 6 according to the downwards moved position of the fracture block after the adjustment is finished, temporarily resetting and pressurizing the fracture end, adjusting a mounting screw in the needle inserting direction through a universal positioning hole 7 according to specific conditions after the resetting is satisfied, removing the screw in the temporary positioning hole 6 and remounting the screw, then fixing the reconstruction plate 1 at the inner side of a true pelvic edge through a fixing hole 2, fixing a side support 4 above the true pelvic edge through a side support fixing hole 3, supporting the tetragonal fracture and blocking the inwards moved trend of the fracture block.

The inner fixing plate in the utility model is designed aiming at the complicated acetabulum fracture combined with the tetragonal fracture, and combined with the measuring result of the pelvic anatomy data, through shaping in advance, the inner fixing plate can be directly used, and can better fit the bone surface, thereby saving the operation time and pruning according to the actual requirement; the reconstruction plate 1, the side branch 4 and the support plate 5 are integrated, splicing is not needed, fixing is firm, and stability is good; the structure is uniform, the effects achieved by different operators are relatively consistent, and the normative of clinical treatment and the evaluation of clinical effects are facilitated; the inner fixing plate is made of titanium alloy material, has good compatibility with human tissues and small electrolytic reaction.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. An internal fixation plate for complex acetabular fractures involving a tetragonal body, comprising: rebuild board (1) and backup pad (5), rebuild board (1) horizontal bending set, the curved shape of rebuilding board (1) and the curved shape phase-match of hip relevant position, have fixed orifices (2) on rebuilding board (1), rebuild board (1) upper end has collateral branch (4), there is collateral branch fixed orifices (3) on collateral branch (4), collateral branch (4) link firmly with rebuilding board (1), backup pad (5) slant sets up, backup pad (5) shape and the shape phase-match of hip relevant position, backup pad (5) upper end links firmly with rebuilding board (1) lower part edge, there are interim fixed orifices (6) and universal fixed orifices (7) on backup pad (5).

2. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1, wherein: the number of the fixing holes (2) is at least two.

3. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1 or 2, wherein: the fixing holes are transversely and uniformly arranged on the reconstruction plate (1).

4. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1, wherein: at least two side branches (4) are provided.

5. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1, wherein: the temporary fixing holes (6) are strip-shaped holes, and the temporary fixing holes (6) are vertically arranged on the supporting plate (5) along the supporting plate (5).

6. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1 or 5, wherein: the number of the temporary fixing holes (6) is at least two.

7. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1, wherein: the universal fixing hole (7) is hourglass-shaped.

8. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1 or 7, wherein: at least two universal fixing holes (7) are formed.

9. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1, wherein: the fixing hole (2), the side branch fixing hole (3), the temporary fixing hole (6) and the universal fixing hole (7) are all through holes.

10. An internal fixation plate for complex acetabular fractures involving tetragons according to claim 1, wherein: the reconstruction plate (1), the support plate (5) and the side branch (4) are all made of titanium alloy.