Near-end dorsal ulna locking steel plate

Abstract

The utility model discloses a proximal ulna dorsal side locking steel plate which comprises a dorsal side plate and a lateral square plate, the dorsal side plate and the lateral square plate are connected through a connecting key strip, the lateral square plate comprises a first locking batten and a second locking batten, one end of the first locking batten and one end of the second locking batten are arranged in an intersecting mode to form an acute angle, and the other end of the first locking batten and the other end of the second locking batten are connected through a connecting key strip. The other end of the first locking batten is connected with the other end of the second locking batten through a third locking batten, the first locking batten, the second locking batten and the third locking batten jointly form a triangular fixing part, and the endpoint position of the other end of the first locking batten and the position of the third locking batten correspond to the coronal protrusion respectively. And the other end of the second locking batten corresponds to the position of the eagle beak pulley incisura. During use, the back side plates are placed corresponding to the back side, the shapes of the connecting key bars are adjusted, the side square plates are attached to the inner side and the outer side of the ulna, then the screws are used for locking and fixing, then the fractured ulna is fixed, locking and fixing firmness is good, and integrity is good.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary medical devices, in particular to a dorsal locking plate for the proximal ulna. Background Art

[0002] There are two long bones in the forearm. One is the ulna located on the inner side of the forearm, that is, the little finger side, and the other is the radius located on the outer side of the forearm, that is, the thumb side. The ulna can be divided into a body with two ends. Its proximal end (elbow joint end) forms a semi-circular olecranon trochlear notch, which articulates with the trochlea of the humerus. There is a protrusion at the distal and proximal ends of the trochlear notch. The protrusion located at the proximal end of the trochlear notch is the olecranon, and the protrusion located at the distal end of the trochlear notch is the coronoid process.

[0003] Fractures of the proximal ulna are relatively common. Currently, the fixation devices for fractures of the proximal ulna mainly focus on the fixation of the proximal ulna, such as the locking plate with the patent application number 202110509276.2.

[0004] For the case of comminuted fractures of the proximal ulna, especially for the type of comminuted fractures involving the medial and / or lateral cortex of the proximal ulna, usually another plate fixation device (miniature plate) is used for fixation. In this way, the fixation of the back of the proximal ulna and the medial and lateral sides of the proximal ulna is relatively separated, resulting in poor overall locking fixation firmness for the fixation of fractures of the proximal ulna.

[0005] In view of this, the inventor of this case conducted in-depth research, and thus this case came into being. Content of the Utility Model

[0006] The purpose of the utility model is to provide a dorsal locking plate that can simultaneously achieve locking fixation of the back, as well as the medial and lateral sides of the proximal ulna, and improve the overall fixation strength.

[0007] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0008] A dorsal proximal ulna locking plate includes a dorsal plate corresponding to the dorsal locking fixation of the proximal ulna and a lateral plate corresponding to the lateral wall locking fixation of the proximal ulna. The dorsal plate and the lateral plate are connected by a connecting key strip. The lateral plate includes a first locking plate strip and a second locking plate strip. One end of the first locking plate strip intersects with one end of the second locking plate strip to form an acute angle. The other end of the first locking plate strip and the other end of the second locking plate strip are connected by a third locking plate strip. The first locking plate strip, the second locking plate strip and the third locking plate strip together form a triangular fixing piece. The first locking plate strip is arranged corresponding to the palmar margin near the proximal ulna. The second locking plate strip is arranged corresponding to the dorsal margin near the proximal ulna. The endpoint position of the other end of the first locking plate strip and the third locking plate strip respectively correspond to the position of the coronoid process of the proximal ulna. The endpoint position of the other end of the second locking plate strip extends to the position corresponding to the olecranon trochlear notch of the proximal ulna.

[0009] Further, the first locking plate strip is arranged at a position 10 mm dorsal to the palmar margin corresponding to the proximal ulna, and the second locking plate strip is arranged at a position 10 mm palmar to the dorsal margin of the proximal ulna.

[0010] Further, the number of the connecting key strips is two, namely a first connecting key strip and a second connecting key strip. The first connecting key strip is arranged corresponding to the position of the coronoid process of the proximal ulna. The first connecting key strip and the second connecting key strip are arranged alternately, and the distance between them is 15 mm.

[0011] Further, the acute angle formed by one end of the first locking plate strip and one end of the second locking plate strip is 30 - 45°.

[0012] Further, the first locking plate strip and the second locking plate strip are respectively provided with a plurality of locking screw holes.

[0013] Further, the first locking plate strip includes a plurality of chain link units. The locking fixing screw holes of the first locking plate strip are arranged corresponding to each chain link unit one by one. Each chain link unit is connected by a fixing key strip. The first locking plate strip is in a chain shape. The second locking plate strip includes a plurality of chain link units, and the structure of the chain link units of the second locking plate strip is the same as that of the first locking plate strip.

[0014] Further, the length of the first locking plate strip is 30 - 50 mm, and the length of the second locking plate strip is 40 - 70 mm.

[0015] Further, the side plate is the first side plate, and the dorsal proximal ulna locking plate further includes a second side plate. The first side plate and the second side plate have the same structure and are respectively arranged corresponding to the inner and outer side walls of the proximal ulna.

[0016] After adopting the above technical solution, a dorsal proximal ulna locking plate of the present utility model has the following beneficial effects: When in use, place the dorsal plate corresponding to the dorsal position of the ulna, adjust the shape of the connecting key strip, for example, bend the connecting key strip to make the side plate fit to the side wall of the ulna, and then use screws for locking and fixing, thereby fixing the fracture of the ulna. Compared with the traditional method of using different locking plates for locking and fixing the dorsal part and the side wall of the ulna respectively, or only using the dorsal plate for locking and fixing, the locking and fixing of the dorsal locking plate of the present utility model has good firmness and integrity. The locking plate of the present utility model belongs to a whole. Therefore, for comminuted fractures of the proximal ulna, especially for fracture types with fractures involving the medial and / or lateral cortical bone fragments, using this dorsal proximal ulna locking plate can fix the side cortical bone fragments at the same time, and the plate is a whole, which can significantly improve the fixation strength, reduce the failure of internal fixation, facilitate early functional exercise, and improve the clinical treatment efficacy of this type of comminuted fracture of the proximal ulna. That is, for comminuted fractures of the proximal ulna, especially for proximal ulna fractures complicated with medial and / or lateral cortical comminution, better firm fixation effects can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a usage state diagram of the dorsal locking plate of the present utility model;

[0018] Figure 2 is a structural schematic diagram of the dorsal locking plate of the present utility model.

[0019] In the figure:

[0020] ulna a; olecranon trochlear notch a1; coronoid process a2; olecranon a3; volar margin b1; dorsal margin b2; dorsal plate 1; side plate 2; first side plate 21; second side plate 22; first locking plate strip 31; chain unit 311; second locking plate strip 32; third locking plate strip 33; locking screw hole 34; fixing key strip 35; connecting key strip 4; first connecting key strip 41; second connecting key strip 42. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail below through specific embodiments.

[0022] There are two long bones in the human forearm. One is the ulna a located on the inner side of the forearm, that is, the little finger side (as Figure 1As shown, the other one is the radius (not shown in the figure) located on the lateral side of the forearm, i.e., the thumb side. The ulna can be divided into one body with two ends. Refer to Figure 1 As shown, its proximal end (elbow joint end) is formed with a semi-circular olecranon trochlear notch a1. The semi-circular olecranon trochlear notch a1 is a trochlear notch and articulates with the trochlea of the humerus. There is a protrusion at each of the distal and proximal ends of the trochlear notch. The protrusion located at the distal end of the trochlear notch is the coronoid process a2, and the protrusion located at the proximal end of the trochlear notch is the olecranon a3.

[0023] It should be noted that the ulna of the present utility model is a medical proper noun, and its position, shape, etc. correspond to the corresponding ulna in medical anatomy, with the same structure.

[0024] A dorsal locking plate for the proximal end of the ulna of the present utility model, as Figure 1 and Figure 2 shown, includes a dorsal plate 1 and a side plate 2. The dorsal plate 1 and the side plate 2 are connected by a connecting key strip 4. The dorsal plate 1 and the side plate 2 can adopt an integrally formed structure. The side plate 2 includes a first side plate 21 and a second side plate 22, and the first side plate 21 and the second side plate 22 are arranged corresponding to the inner and outer side walls of the proximal end of the ulna. The first side plate 21 and the second side plate 22 are correspondingly connected to both side edges of the dorsal plate 1. The second side plate 22 has the same structure as the first side plate 21.

[0025] The first side plate 21 includes a first locking plate strip 31 and a second locking plate strip 32. One end of the first locking plate strip 31 intersects with one end of the second locking plate strip 32 to form an acute angle. The other end of the first locking plate strip 31 and the other end of the second locking plate strip 32 are connected by a third locking plate strip 33. The first locking plate strip 31, the second locking plate strip 32, and the third locking plate strip 33 together form a triangular fixing member, which can increase the stability of the locking fixation. Taking the side of the ulna close to the radius as the palmar side of the ulna, and the side opposite to the palmar side of the ulna as the dorsal side of the ulna, the first locking plate strip 31 is arranged corresponding to the palmar edge b1 close to the proximal end of the ulna (i.e., Figure 1 the top end edge in the shown orientation). The second locking plate strip 32 is arranged corresponding to the dorsal edge b2 close to the proximal end of the ulna (i.e., Figure 1 the bottom end edge in the shown orientation). The endpoint position of the other end of the first locking plate strip 31, as well as the third locking plate strip 33, respectively correspond to the position of the coronoid process a2 of the proximal end of the ulna. The endpoint position of the other end of the second locking plate strip 32 extends to correspond to the position of the olecranon trochlear notch a1 of the proximal end of the ulna.

[0026] The first side plate 21 and the second side plate 22 of the present utility model, especially the connecting key strip 4, are made of a material that can be bent or even cut, such as titanium alloy, etc. During the actual operation, the first side plate 21 and / or the second side plate 22 can be selected according to the differences in individual fractures.

[0027] In the present utility model, the dorsal side plate 1 adopts a locking plate on the back of the proximal ulna that is conventional in the industry, such as the locking plate in 202110509276.2.

[0028] When the dorsal locking plate of the present utility model is in use, the dorsal side plate 1 is placed corresponding to the back position of the ulna a, and the shape of the connecting key strip 4 is adjusted. For example, the connecting key strip is bent so that the side plate 2 fits against the side wall of the ulna a, and then screws are used for locking and fixing, thereby fixing the fracture of the ulna a. Compared with the conventional method of locking and fixing the dorsal side plate and the side plate separately, the fixation of the dorsal locking plate of the present utility model is more firm, can reduce the failure of internal fixation after surgery, is conducive to early functional exercise, and improves the clinical treatment effect.

[0029] As a preferred embodiment, the first locking plate strip 31 is disposed at a position 10 mm dorsal to the palmar margin b1 corresponding to the proximal ulna, and the second locking plate strip 32 is disposed at a position 10 mm palmar to the dorsal margin b2 of the proximal ulna.

[0030] Further, one end of the first locking plate strip 31 and one end of the second locking plate strip 32 form an acute angle of 30 - 45°. In this embodiment, specifically 35°.

[0031] Further, the length of the first locking plate strip 31 is 30 - 50 mm, and the length of the second locking plate strip 32 is 40 - 70 mm. In this embodiment, the length of the first locking plate strip 31 is 40 mm, and the length of the second locking plate strip 32 is 60 mm.

[0032] As a preferred embodiment, the number of connecting key strips 4 is two, namely the first connecting key strip 41 and the second connecting key strip 42. The first connecting key strip 41 is disposed corresponding to the position of the coronoid process a2 of the proximal ulna. The first connecting key strip 41 and the second connecting key strip 42 are arranged at intervals, and the distance between the two is 15 mm. The first connecting key strip 41 and the second connecting key strip 42 are made of a material that can be bent or even cut, such as titanium alloy, etc. During the actual operation, according to actual needs, the first connecting key strip 41 and the second connecting key strip 42 are bent so that the dorsal locking plate of the present utility model fits against the ulna and is locked and fixed together.

[0033] Through the connecting key strip 4, the integrity of the connection between the dorsal side plate 1 and the side plate 2 can be achieved, and it can be selected according to actual needs. For example, it can be selected whether to use the side plate. When not in use, the connecting key strip 4 can be cut off, and when in use, its shape can be bent and adjusted. Similarly, the first side plate 21 or the second side plate 22 can be selected.

[0034] As a preferred embodiment, the first locking strip 31 and the second locking strip 32 are respectively provided with a plurality of locking screw holes 34 for locking and fixing with screws.

[0035] Furthermore, the first locking strip 31 includes a plurality of chain link units 311. Each locking screw hole 34 of the first locking strip 31 is correspondingly arranged on each chain link unit 311. The chain link units 311 are connected by fixing key strips 35. The first locking strip 31 is in a chain shape. The second locking strip 32 includes a plurality of chain link units, and the structure of the chain link units of the second locking strip 32 is the same as that of the first locking strip 31. The third locking strip 33 can be a connecting key strip, or the third locking strip 33 includes a plurality of chain link units, and the structure of the chain link units of the third locking strip 33 is the same as that of the first locking strip 31.

[0036] The fixing key strip 35 is made of a material that can be bent or even cut, such as titanium alloy, etc. During the actual operation process, appropriate morphological adjustments such as moderate bending are carried out according to actual needs, or cutting treatment is carried out, etc.

[0037] Furthermore, the first locking strip 31 includes a plurality of chain link units 311. Each locking screw hole 34 of the first locking and fixing plate 31 is correspondingly arranged on each chain link unit 311.

[0038] It should be noted that in the present utility model, the size of the chain link unit 311, the size of the locking screw hole, and the width and thickness of the connecting key strip 4 and the fixing key strip 35 can be set according to actual needs as long as the corresponding functions can be achieved, and are not limited herein.

[0039] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present utility model.

Claims

1. A proximal dorsal ulna locking plate, characterized in that: The strap is configured to engage a first locking member and a second locking member configured to engage a second locking member, wherein the first locking member is configured to engage a second locking member and the second locking member is configured to engage a second locking member.

2. The proximal dorsal ulna locking plate according to claim 1, characterized in that: The first locking strip is arranged at a position corresponding to 10 mm dorsal to the palmar edge of the proximal end of the ulna, and the second locking strip is arranged at a position corresponding to 10 mm palmar to the dorsal edge of the proximal end of the ulna.

3. The proximal dorsal ulna locking plate according to claim 1, characterized in that: There are two connecting key strips, namely the first connecting key strip and the second connecting key strip. The first connecting key strip is arranged corresponding to the position of the coronoid process of the proximal end of the ulna. The first connecting key strip and the second connecting key strip are arranged alternately, and the distance between the two is 15 mm.

4. The proximal dorsal ulna locking plate according to claim 2, characterized in that: One end of the first locking strip forms an acute angle of 30-45° with one end of the second locking strip.

5. The proximal dorsal ulna locking plate according to claim 1, characterized in that: The first locking strip and the second locking strip are respectively provided with a plurality of locking screw holes.

6. The proximal dorsal ulna locking plate according to claim 5, characterized in that: The first locking slat includes a plurality of branch chain units, the locking fixing screw holes of the first locking slat are arranged one by one at each of the branch chain units, and the branch chain units are connected by a fixed key strip. The first locking slat is chain-shaped, and the second locking slat includes a plurality of branch chain units. The structure of the branch chain units of the second locking slat is the same as that of the first locking slat.

7. The proximal dorsal ulna locking plate according to claim 1, characterized in that: The length of the first locking strip is 30-50 mm, and the length of the second locking strip is 40-70 mm.

8. The proximal dorsal ulna locking plate according to claim 1, characterized in that: The lateral plate is a first lateral plate, and the proximal ulna dorsal locking steel plate also includes a second lateral plate. The first lateral plate and the second lateral plate have the same structure and are arranged one by one corresponding to the inner and outer side walls of the proximal ulna.

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