CN221060824U - Distal humerus anterolateral anatomic locking bone plate - Google Patents
Distal humerus anterolateral anatomic locking bone plate Download PDFInfo
- Publication number
- CN221060824U CN221060824U CN202322120053.4U CN202322120053U CN221060824U CN 221060824 U CN221060824 U CN 221060824U CN 202322120053 U CN202322120053 U CN 202322120053U CN 221060824 U CN221060824 U CN 221060824U
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- plate
- humerus
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- body part
- humeral
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- 210000002758 humerus Anatomy 0.000 title claims abstract description 69
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 208000010392 Bone Fractures Diseases 0.000 abstract description 40
- 239000012634 fragment Substances 0.000 abstract description 16
- 238000005253 cladding Methods 0.000 abstract description 9
- 206010017076 Fracture Diseases 0.000 description 24
- 210000002979 radial nerve Anatomy 0.000 description 6
- 206010037749 Radial nerve injury Diseases 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000000642 iatrogenic effect Effects 0.000 description 3
- 208000007981 Humeral Fractures Diseases 0.000 description 2
- 206010020462 Humerus fracture Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000007794 irritation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 206010061213 Iatrogenic injury Diseases 0.000 description 1
- 208000028389 Nerve injury Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 206010045378 Ulnar nerve injury Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000002302 brachial artery Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001617 median nerve Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003387 muscular Effects 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 206010033675 panniculitis Diseases 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Abstract
The application provides a distal humerus anterior-medial anatomic locking bone plate, which relates to the technical field of medical appliances and comprises a plate main body part and a side plate member: step grooves are formed in two side edges of the plate main body part, and counter sunk holes matched with the step grooves are formed in the two side edges of the plate main body part at equal intervals; the side plate member is detachably arranged and fixed at the step groove through the counter bore in a matched mode and is used for coating the lateral side of the humerus stem. The cladding area to the humerus stem has been promoted through the cooperation design of curb plate component and board main part, specifically, when there is the fracture fragment of a plurality of different positions in humerus stem department, through countersunk hole cooperation bolt is fixed curb plate component in ladder groove corresponding position department for curb plate component follows board main part and gets into fracture position department for fix the fracture fragment that board main part is not cladding, so then need not to put in addition other humerus bone fracture plate in the later stage and fix the fracture fragment that board main part is not cladding, reduced the operation degree of difficulty.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a distal humerus anterior-medial anatomic locking bone plate.
Background
When a fracture occurs at the joint of the humeral condyle and the humerus stem, a humeral plate (i.e., a bone plate) is usually required to be used, and surgical dissection is performed by means of a distal dorsal approach of the humerus shaft or a distal anterior approach of the humerus stem, so that the humeral plate is implanted at the fracture to fix a humeral fracture block.
The humerus plate of the related art has a structure shown in fig. 1, including a main body portion in a stem shape, and a head portion in an outwardly curved shape. When in use, the head is attached to the humeral condyle, the main body is attached to the external wall of the humerus stem, and locking nails with proper lengths are respectively arranged on the main body and the head to enter the bone, so as to fix the humeral fracture block.
But when in use it was found that: when a complex fracture occurs at the humerus stem (i.e. a plurality of fracture fragments exist), the separate main body part is difficult to cover the fracture fragments, and other humerus plates are additionally arranged for position adjustment and then reinforcement (i.e. an operation step of putting other humerus plates into the fracture position is additionally arranged), which clearly increases the operation difficulty.
Disclosure of utility model
In order to overcome the defect that a plurality of fracture fragments are difficult to be fixed by a single humerus plate in a cladding mode in the related art, the embodiment of the application provides the front inner side anatomical locking bone plate for the distal end of the humerus, and the cladding area of the main body part of the plate is expanded, so that the fixation of the plurality of fracture fragments can be realized by the single humerus bone plate.
The technical scheme adopted by the embodiment of the application for solving the technical problems is as follows: a distal anterior medial humerus anatomic locking bone plate comprising a plate body portion and a side plate member:
step grooves are formed in two side edges of the plate main body part, and counter sunk holes matched with the step grooves are formed in the two side edges of the plate main body part at equal intervals;
The side plate member is detachably arranged and fixed at the step groove through the counter bore in a matched mode and is used for coating the lateral side of the humerus stem.
Preferably, the side plate member comprises a side plate which is positioned at the step groove and has a thickness smaller than the thickness of the plate main body part, screw holes corresponding to the counter bores are formed in the side plate at equal intervals, and fixing holes A for fixing the locking nails are formed in the side plate at equal intervals.
Preferably, the plate main body part is attached to the humeral shaft, and fixing holes B for fixing 3.5 locking nails are formed at equal intervals on the plate main body part.
Preferably, one end of the plate main body part is arc-shaped.
Preferably, the distal humerus anterior-medial anatomic locking bone plate further comprises a plate head part, wherein the plate head part is connected with the other end of the plate main body part and is designed integrally with the plate main body part, the plate head part is attached to the outer wall of the humerus condyle, and a plurality of fixing holes C for fixing 2.7 locking nails are formed in the plate head part.
Preferably, the thickness of the plate main body portion to the plate head portion is gradually thinned.
Preferably, sewing holes are formed in the edge of the plate head at equal intervals.
Preferably, the thickness of the plate main body portion is 3mm, the width is 12mm, and the sum of the lengths of the plate main body portion and the plate head portion is 243mm.
The embodiment of the application has the advantages that:
The cladding area of the humerus stem is improved through the matching design of the side plate component and the plate main body part, specifically, bolts are utilized to penetrate through countersunk holes in advance and are fixed with corresponding screw holes on the side plate, the side plate is fixed at the corresponding position of the step groove, the side plate is bent to be attached to the humerus stem, the 2.7 locking nails penetrate through the fixing holes A to fix the side plate on the humerus stem, the cladding area of the plate main body part is expanded, a single humerus bone plate can fix a plurality of fracture fragments, the position of the fracture fragments does not need to be adjusted by putting another humerus bone plate into use, and the operation difficulty is reduced.
Drawings
Fig. 1 is a schematic view of a related art humerus plate according to the background of the application;
FIG. 2 is a schematic view of a locking bone plate structure of the distal anterolateral anatomic type of humerus provided in an embodiment of the present application;
FIG. 3 is a schematic view of a connection relationship between a plate main body and a plate head according to an embodiment of the present application;
Fig. 4 is a schematic structural view of a side plate member according to an embodiment of the present application;
FIG. 5 is a schematic diagram showing the positional relationship between a suture hole and a plate head according to an embodiment of the present application;
fig. 6 is a schematic view of a second embodiment of a distal anterior medial humerus anatomic locking bone plate structure provided in an embodiment of the present application.
In the figure: 1-a plate body portion; 11-step grooves; 12-countersunk holes; 13-fixing holes B; 2-side plate members; 21-side plates; 211-screw holes; 212-fixed hole A; 3-plate head; 31-a fixing hole C; 32-suture holes.
Detailed Description
The technical scheme in the embodiment of the application aims to solve the defect that a plurality of fracture fragments are difficult to be fixed by a single humerus plate in the related technology, and the general thought is as follows:
Example 1: referring to fig. 2-3, a distal humeral anterolateral anatomic locking bone plate comprises a plate body portion 1 and a side plate member 2:
step grooves 11 are formed on two sides of the plate main body part 1, and counter sunk holes 12 matched with the step grooves 11 are formed on two sides of the plate main body part at equal intervals;
The side plate member 2 is detachably arranged and fixed at the step groove 11 through the counter bore 12 in a matched mode so as to cover the lateral side of the humerus stem. When the humerus stem is provided with a plurality of fracture fragments in different directions, the side plate member 2 is fixed at the corresponding position of the stepped groove 11 through the counter bore 12 and the bolts, so that the side plate member 2 enters the fracture position along with the plate main body part 1 to fix the fracture fragments which are not covered by the plate main body part 1, and thus, other humerus bone plates are not required to be additionally put into the later stage to fix the fracture fragments which are not covered by the plate main body part 1, namely, the operation steps of adding other humerus bone plates are reduced.
The design of the plurality of counter bores 12 is utilized simultaneously to facilitate adjustment of the mounting position of the side plate member 2 to accommodate the position of the fracture fragment to be coated.
The side plate member 2 and the plate main body 1 are detachably attached, and thus can be detached when the side plate member 2 is not required.
Referring to fig. 2 and 4, the side plate member 2 includes a side plate 21 having a smaller thickness than the plate body 1 at the stepped groove 11, so that the side plate 21 can be bent into a proper shape to fit the humerus shaft. Screw holes 211 corresponding to the countersunk holes 12 are formed in the side plate 21 at equal intervals, and fixing holes A212 for fixing locking nails are formed in the side plate 21 at equal intervals. When a plurality of broken fragments are arranged on the humeral shaft, bolts are used for penetrating through countersunk holes 12 in advance to be fixed with corresponding screw holes 211 on the side plate 21, so that the side plate 21 is fixed at the corresponding position of the stepped groove 11, the side plate 21 is bent to be attached to the humerus shaft, a 2.7 locking nail is used for penetrating through a fixing hole A212 to fix the side plate 21 on the humeral shaft, the cladding area of the plate main body part 1 is expanded, another humerus bone plate is not required to be put in, and the operation difficulty is reduced.
Referring to fig. 2 and 3, the plate body 1 is attached to the humeral shaft and has fixing holes B13 at equal intervals for fixing 3.5 locking nails. The plate main body part 1 is fixed with the humerus stem by using a 3.5 locking nail through the fixing hole B13.
One end of the plate main body part 1 is arc-shaped. The edge and one end of the plate main body part 1 are arc-shaped, so that the irritation to soft tissues in the operation process can be reduced.
Referring to fig. 2 and 3, the distal humerus anterior medial anatomic locking bone plate further comprises a plate head 3, wherein the plate head 3 is connected to the other end of the plate body 1 and is designed integrally therewith, the plate head 3 is attached to the external wall of the humerus condyle, and a plurality of fixing holes C31 for fixing 2.7 locking nails are formed in the plate head 3. The plate head 3 is fixed with the humeral condyle through the fixing hole C31 by using a 2.7 locking nail.
The thickness of the plate main body portion 1 to the plate head portion 3 becomes thinner gradually. Reduces irritation to soft tissues during operation.
Referring to fig. 2, 3 and 5, suture holes 32 are equidistantly formed at the edge of the plate head 3. The specific section positions of the plate head 3 and the suture holes 32 are shown in fig. 5, and the suture holes 32 with the inclined design facilitate the suture operation by inserting suture needles, so that the bone plate and the humerus are fixed more tightly.
The thickness of the plate body portion 1 was 3mm, the width was 12mm, and the total length of the plate body portion 1 and the plate head portion 3 was 243mm.
When the application is used, the specific operation steps are as follows:
s1, patient position: according to the condition of the patient, various body positions can be adopted, so that the operation is convenient, and the patient is free from uncomfortable feeling;
S2, surgical incision: a longitudinal incision, the incision size can be put into the locking bone plate for implantation, so that a clear operation view is obtained;
S3, separating subcutaneous tissues and muscles, and exposing fracture parts;
S4, resetting the fracture end by using a reset forceps or a bone holding forceps;
S5, electric drill holes are drilled on the humerus in advance, the anatomical locking bone fracture plate at the front inner side of the distal end of the humerus is placed into a fracture position and the position is adjusted, so that the electric drill holes respectively correspond to the fixing holes B13 of the plate main body part 1 or the fixing holes C31 of the plate head part 3, 3.5 locking nails are adopted to penetrate through the fixing holes B13 for fixing the plate main body part 1, and 2.7 locking nails are adopted to penetrate through the fixing holes C31 for fixing the plate head part 3; when a plurality of broken fragments exist on the humeral shaft, bolts are used for penetrating through countersunk holes 12 in advance to be fixed with corresponding screw holes 211 on the side plate 21, so that the side plate 21 is fixed at the corresponding position of the stepped groove 11, the side plate 21 is bent to be attached to the humerus shaft, a 2.7 locking nail is used for penetrating through a fixing hole A212 to fix the side plate 21 on the humeral shaft, the cladding area of the plate main body part 1 is expanded, and a humerus bone plate is not required to be additionally put into the position to be adjusted for fixation, so that the operation difficulty is reduced.
In addition, the distal anterior-medial humerus anatomic locking bone plate of the present application is suitable for implantation in an anterior-medial approach to avoid radial nerve injury.
The incidence rate of the existing humeral shaft fracture is about 1.2% -3% of the whole body fracture, and the humeral shaft fracture is usually treated by adopting the surgical therapy of the humeral shaft fracture incision reduction steel plate internal fixation at present. The current operation modes of the distal anterior approach of the humerus stem can be divided into an anterolateral incision and an anterolateral incision. Because the radial nerve is shaped to spiral downwards and outwards around the back side of the middle part of the humerus along the radial nerve groove, if the humerus bone fracture plate is placed on the front outer side of the humerus in a front outer side incision operation way, the radial nerve must be dissociated in the operation, and the radial nerve is placed on the surface or inwards of the humerus bone fracture plate, so that iatrogenic radial nerve injury can be possibly caused. The incidence rate of iatrogenic radial nerve injury is up to 5.1% -17.6%, and the injury of the radial nerve muscular branch is not easy to be found, and the muscle strength of the triceps brachii can be reduced after operation.
Therefore, the humerus bone fracture plate can be placed in a front inner side approach way, so that the radial nerve does not need to be exposed, the nerve injury risk is obviously reduced, the inner side of the humerus is flat, the attachment degree of the humerus bone fracture plate is higher, and the humerus bone fracture plate is used on the inner side, so that repeated bending is not needed in the operation.
In practical application, the plate main body part can be attached to the anatomical cambered surface on the inner side of the humerus stem, so that the bone fracture plate can be placed in the middle, the fixing hole is positioned at the axis of the humerus marrow cavity, and the anti-pulling force of the bolt of the fixing hole is increased. The plate main body part is transited to the distal end along the medial epicondyle of the distal humerus, the included angle between the plate main body part and the coronal surface of the plate head part is 153.4 degrees, and the transition part of the plate main body part is provided with a curvature radian R121mm according to a standard humerus anatomy database model. The bone fracture plate consists of a plate main body part which is matched with the inner side of the humerus stem and a plate main body part of which the distal end extends along the medial epicondyle, accords with the anatomical structure of the humerus stem, ensures that the bone fracture plate is more matched, and can better avoid the screw dangerous area in the middle-lower 1/3 fracture of the humerus stem.
The fixation mode of the humerus bone fracture plate placed on the front inner side can obviously reduce the incidence of iatrogenic radial nerve injury, and does not increase the incidence of median nerve, brachial artery and vein and ulnar nerve injury. The occurrence rate of iatrogenic injury is lower when the humerus bone fracture plate is taken out, has obvious social and economic significance, and is easy to be accepted by patients and the same people in the medical community.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present application and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present application.
Claims (8)
1. A distal anterior medial humerus anatomic locking bone plate comprising:
The plate comprises a plate main body part (1), wherein stepped grooves (11) are formed in two side edges of the plate main body part (1), and counter bores (12) matched with the stepped grooves (11) are formed in the two sides of the plate main body part (1) at equal intervals;
the side plate component (2) is detachably arranged and fixed at the step groove (11) through the counter bore (12) in a matching way and is used for coating the side edge of the humerus stem.
2. The distal anterior-medial humerus anatomic locking bone plate as claimed in claim 1, characterised in that the side plate member (2) comprises a side plate (21) at the stepped slot (11) and having a thickness less than the thickness of the plate body (1), screw holes (211) corresponding to the counter bores (12) being equidistantly provided on the side plate (21), and fixing holes a (212) for fixing locking nails being equidistantly provided on the side plate (21).
3. The distal anterior-medial humeral anatomic locking bone plate as claimed in claim 1, characterised in that the plate body part (1) is intended to be applied to the humeral shaft and is provided with equally spaced fixation holes B (13) for fixation of 3.5 locking nails.
4. The humeral distal anterolateral anatomic locking bone plate of claim 1, wherein said plate body (1) is of arcuate design at one end.
5. The humeral distal anterolateral anatomic locking bone plate of claim 1, further comprising a plate head (3), said plate head (3) being connected to the other end of said plate body (1) and designed integrally with said plate body (1), said plate head (3) being adapted to be applied to the external humeral condyle wall, and said plate head (3) being provided with a plurality of fixation holes C (31) for fixation of 2.7 locking nails.
6. The humeral distal anterolateral anatomic locking bone plate of claim 5, wherein the thickness of said plate body portion (1) to said plate head portion (3) tapers.
7. The anterior-medial humeral distal anatomic locking bone plate as claimed in claim 5, characterised in that suture holes (32) are open equidistantly at the edge of the plate head (3).
8. The humeral distal anterolateral anatomic locking bone plate of claim 5, wherein the plate body (1) is 3mm thick and 12mm wide, the sum of the length of the plate body (1) and the plate head (3) being 243mm.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221060824U true CN221060824U (en) | 2024-06-04 |
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| Date | Code | Title | Description |
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| GR01 | Patent grant |