Proximal humerus greater tubercle rotator cuff stop fracture locking steel plate

Abstract

The utility model relates to the technical field of locking steel plates for proximal humerus fracture, in particular to a locking steel plate for proximal humerus greater tuberosity rotator cuff stop point fracture, which comprises a locking steel plate body and a top end fixing component used for fixing a small fracture block of a rotator cuff stop point, the top end fixing assembly comprises a positioning plate integrally connected with the top end of the locking steel plate body, a screw hole and a suture hole which are formed in the positioning plate, and a screw which penetrates through the screw hole to fix the positioning plate and a small fracture block at a rotator cuff dead point on a proximal humerus greater tubercle; the top end fixing assembly is arranged on the locking steel plate body, the positioning plate extends in the direction away from the top end of the locking steel plate body and covers a rotator cuff stop point, and the positioning plate and the top end of the locking steel plate body form an attaching face attached to the proximal humerus greater tubercle. And the firm fixation of the rotator cuff dead point bone block is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of humeral proximal fracture locking steel plate, especially to a humeral proximal greater tuberosity rotator cuff insertion fracture locking steel plate. BACKGROUND

[0002] Due to the complex structure and large range of motion of the shoulder joint, humeral proximal fracture is common in orthopedic fractures. At the moment of injury, the patient may have simultaneous muscle tension contraction, bone structure impact and other violent forces involved, often causing comminuted fracture of the rotator cuff insertion at the top of the greater tuberosity of the humerus. If not treated actively, the anatomical position of the greater tuberosity of the humerus changes, intra-articular loose bodies, shoulder joint clunking and impingement, and the rotator cuff is shortened, which seriously affects the functional rehabilitation of the shoulder joint.

[0003] For patients with obvious displacement of humeral proximal comminuted fracture, surgical treatment is the main treatment, and the internal fixation methods are various, including simple cancellous screw fixation, humeral proximal locking steel plate or micro steel plate fixation, steel wire tension band and suture or anchor suture fixation, etc. There is no gold standard, each has advantages and disadvantages. ① Cancellous screw fixation: cancellous screw fixation is a common method for treating the greater tuberosity of the humerus. Minimally invasive percutaneous screw fixation is especially suitable for young patients with good bone quality. For patients with comminuted fracture and osteoporosis, there is a high risk of iatrogenic fracture during screw fixation, which leads to further comminution and displacement of the greater tuberosity. ② Transosseous suture fixation: Transosseous suture fixation is also suitable for patients with osteoporosis and comminuted fracture, and avoids metal internal fixation rejection and secondary removal, etc. However, simple bone suture lacks stability and support for the bone, and the suture is easy to cut the muscle and break. ③ Tension band steel wire fixation: This method has the characteristics of converting tension into power, and shows good mechanical stability in biomechanical tests. When treating greater tuberosity fracture, the fixation strength is large, but it may cause iatrogenic surgical neck fracture. In addition, the elastic tendon tissue behind the supraspinatus tendon insertion avoids the cutting of the tension band steel wire to a certain extent, but the long-term strong pulling force is easy to cause damage to the supraspinatus tendon. At the same time, the cutting force of the tension band on the humerus is large, which can lead to fracture displacement, and to a certain extent, it limits the early activity of the shoulder joint. ④ Steel plate internal fixation: There are many types of steel plates used for the proximal humerus. Early commonly used T-shaped steel plate, surgical neck anatomical steel plate, clover steel plate and dynamic compression steel plate, etc. At present, the main use in clinical is locking steel plate. It is mainly used for the treatment of two, three and part of four part fractures of the proximal humerus. It provides a solid nail plate system combination holding force in the aspect of biomechanics, effectively and firmly fixes the fracture end, restores the neck angle, and avoids further secondary displacement.

[0004] In the prior art, there are many types of steel plates used for proximal humerus, such as T-shaped steel plate, surgical neck anatomical steel plate, clover steel plate and dynamic compression steel plate, etc. At present, the mainstream is to use locking steel plate in clinical application. It is mainly used for treating two, three and part of four part fractures of proximal humerus. In order to provide the joint holding force of the solid nail plate system, effectively and firmly fix the fracture end, restore the neck angle, and avoid further secondary displacement.

[0005] In the patent with application number 2014102658538, a humeral greater tuberosity locking steel plate is disclosed, which comprises a steel plate body, one end of the steel plate body is bent to one side to form a fixed head, a notch is provided in the middle of the fixed head, and two clamping claws are symmetrically formed on both sides of the notch; the two clamping claws are in the shape of double claws, so that the claw tips can be further anchored and attached to the large fracture block of the greater tuberosity. The invention has good effect on large fracture blocks of the upper end of the humerus, but it cannot fix small fracture blocks or shoulder rotator cuff stop blocks. The central gap cannot fix the small bone block at the top of the humerus, the claw-shaped fixation is sharp and easy to cut the shoulder rotator cuff in the long run, and further secondary injury may occur. It must conform to the anatomical shape of the proximal humerus to completely fit, and it is unstable, has no steel plate internal screw holding, cannot effectively resist rotation, and is easy to unhook.

[0006] In the patent with application number 202111139638, a proximal humeral locking plate is disclosed, which comprises a locking plate body, a screw hole, an auxiliary assembly, a square tube, a fixed plate, a fixed hole, a screw, and a splicing assembly. A plurality of fixed holes are formed in the fixed plate. A bolt is inserted into each fixed hole, and the bolt is screwed into the screw hole. The square tube is located on the upper part of the locking plate body. The splicing assembly comprises an elastic metal rod, a rope containing groove, and a first pull rope. One end of the elastic metal rod is a curved surface that conforms to the shape of the posterior side of the top of the humerus. The rope containing groove is formed on the side of the elastic metal rod away from the curved surface. The first pull rope is fixed to one end of the rope containing groove near the curved surface. A transition fillet is provided at the free end of the curved surface. The locking plate body is temporarily fixed on the humeral shaft, and the square tube is fixed on the locking plate body. The elastic metal rod has a curved surface that conforms to the shape of the posterior side of the upper end of the humerus. The elastic metal rod is inserted into the square tube and penetrates into the posterior side of the humerus, so that the elastic metal rod can push the displaced bone block at the top of the humerus to restore its position, and has good reduction effect on the posterior bone block of the humerus. This surgical fixation method is relatively complex to operate and takes a long time. It can only fix the large fracture block at the back, and cannot effectively fix the small fracture block at the top of the humerus, the front and lateral sides, or the rotator cuff stop block, and cannot improve the function of the rotator cuff.

[0007] Traditional steel plate screw fixation can only deal with large proximal humeral fractures, and there is a lack of research on special types of fractures, especially rotator cuff insertion fractures, how to combine individual actual conditions to adopt appropriate treatment scheme, which is worth further deepening, and the utility model aims at solving the problem that the fracture end of this type is difficult to reset and fix, and adopts an innovative special improved fixation method to reasonably treat proximal humeral fractures and rotator cuff injuries, reduce the pain of patients and promote the recovery of shoulder joint function. SUMMARY

[0008] The utility model aims at solving the above-mentioned shortcomings existing in the prior art, and proposes a locking steel plate for large tuberosity rotator cuff insertion fracture of proximal humerus.

[0009] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0010] A locking steel plate for large tuberosity rotator cuff insertion fracture of proximal humerus is designed, which comprises a locking steel plate body, further comprises a top end fixing assembly, which is used for fixing small fracture blocks of rotator cuff insertion, wherein the top end fixing assembly comprises a positioning plate integrally connected with the top end of the locking steel plate body, screw holes and suture holes opened on the positioning plate, screws passing through the screw holes to fix the positioning plate and small fracture blocks of rotator cuff insertion on the large tuberosity of proximal humerus, the positioning plate extends away from the top end of the locking steel plate body and covers the rotator cuff insertion, and forms an adhering surface on the large tuberosity of proximal humerus with the top end of the locking steel plate body.

[0011] Further, the screw is a 2.0 screw.

[0012] Further, the number of screw holes is two.

[0013] Further, the number of suture holes is three.

[0014] Further, two screw holes are respectively provided with one suture hole near the edge side of the positioning plate, and one suture hole is arranged at the middle position between the two screw holes.

[0015] Further, the thickness of the positioning plate gradually decreases away from the top end of the locking steel plate body.

[0016] Further, the positioning plate is an arc-shaped plate.

[0017] The locking steel plate for large tuberosity rotator cuff insertion fracture of proximal humerus has the beneficial effects that:

[0018] The utility model discloses a top fixing assembly is set up on the locking steel plate body, and the positioning plate, screw, suture hole three aspects are combined and used creatively, realize the firm fixation to the rotator cuff insertion bone block, have better anchoring force and higher tensile strength, be favorable to the early activity of shoulder joint, function rehabilitation.

[0019] The design of the utility model accords with human humerus structure, and biomechanics is more stable.

[0020] The utility model discloses solve the rotator cuff insertion bone block fixation while solving the rotator cuff problem, relative reduction open anchor rotator cuff repair or arthroscopic surgery mode, reduce the patient's suffering, save medical expenses. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is structure schematic diagram of the utility model;

[0022] Fig. 2 It is use state schematic of the utility model; DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Embodiment, refer to Figs. 1-2 , the applicant finds in the work that traditional steel plate screw fixation can only handle proximal humerus large fracture, for special type fracture, especially rotator cuff insertion fracture, under the pulling of rotator cuff muscle, the small fracture block of rotator cuff insertion is easy to displace, and the traditional steel plate cannot effectively fix the small fracture block of rotator cuff insertion, and cannot improve the rotator cuff activity function, therefore, the applicant designs a proximal humerus large tuberosity rotator cuff insertion fracture locking steel plate, including locking steel plate body 1, still including top fixing assembly 2, it is used for fixing the small fracture block of rotator cuff insertion, wherein, top fixing assembly 2 includes and is integrally connected with the positioning plate 201 of locking steel plate body 1 top, and the screw hole 202 and suture hole 203 that are set up on the positioning plate 201, and the screw 204 that passes through screw hole 202 and fixes the small fracture block of rotator cuff insertion and the proximal humerus large tuberosity on the positioning plate 201, the positioning plate 201 extends away from the direction of locking steel plate body 1 top and covers rotator cuff insertion, and and locking steel plate body 1 top forms the adhering surface that is attached on the proximal humerus large tuberosity, preferably, the locking steel plate body 1 and the positioning plate 201 in the embodiment of the utility model adopt titanium alloy material, guarantee flexibility, prevent human body rejection.

[0025] The utility model discloses a top fixed assembly 2 is set up on locking steel plate body 1, and the three aspects of positioning plate 201, screw 204, suture hole 202 are combined and used creatively, realize the firm fixation to rotator cuff insertion point bone block, have better anchoring force and higher tensile strength, and it is favorable to early activity of shoulder joint, functional rehabilitation.

[0026] The design of the utility model accords with human humerus structure, and biomechanics is more stable.

[0027] The utility model discloses solve the rotator cuff insertion point bone block fixedly while solving the rotator cuff problem, relative reduction open anchor rotator cuff repair or arthroscopic surgery mode, reduce the patient's distress, save medical expenses.

[0028] In an optional embodiment of the utility model, in order to avoid that the screw 204 is too thick and causes the small bone fracture of rotator cuff insertion point to be broken, the screw 204 is 2.0 screw.

[0029] In an optional embodiment of the utility model, in order to further improve the firmness of rotator cuff insertion point bone block, the number of screw hole 202 is two, and the number of suture hole 203 is three, one suture hole 203 is respectively arranged on the edge side of two screw holes 202 close to positioning plate 201, and one suture hole 203 is arranged at the middle position of two screw holes 202.

[0030] In an optional embodiment of the utility model, in order to avoid that the positioning plate 201 causes the impact point, the thickness of positioning plate 201 gradually reduces away from the top of locking steel plate body 1.

[0031] In an optional embodiment of the utility model, the positioning plate 201 is an arc plate.

[0032] In an optional embodiment of the utility model, the locking steel plate body 1 includes a proximal end 101 and a distal end 102, a proximal end screw hole 103 is arranged on the proximal end 101, the number of proximal end screw holes 103 is five, and the proximal end screw holes 103 are distributed in disorder, and the arrangement is suitable for the surgical treatment of proximal humerus fracture, a plurality of proximal suture holes 104 are arranged on the edge of the proximal end 101, which is suitable for the suture reinforcement of rotator cuff muscle and protects the function of rotator cuff, a distal end locking screw hole 105 is arranged on the distal end 102, and the distal end locking screw hole 105 is combined with a pressurizing hole 106.

[0033] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the utility model, and the ordinary skilled person in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

[0034] In the description of the present specification, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the technical solutions of the present patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present patent application.

[0035] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present patent application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0036] In the present specification, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present specification can be understood according to the specific circumstances.

[0037] In the present specification, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0038] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0039] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A locking plate for proximal humerus greater tuberosity rotator cuff enthesis fracture, comprising a locking plate body (1), characterized in that: The application also discloses a top fixing assembly (2) for fixing small fracture pieces of rotator cuff insertion, wherein the top fixing assembly (2) comprises a positioning plate (201) integrally connected with the top end of the locking steel plate body (1), screw holes (202) and suture holes (203) formed in the positioning plate (201), and a screw (204) penetrating through the screw holes (202) to fix the positioning plate (201) and the small fracture pieces of rotator cuff insertion on the greater tubercle of the proximal humerus; the positioning plate (201) extends away from the top end of the locking steel plate body (1) and covers the rotator cuff insertion, and forms a contact surface on the greater tubercle of the proximal humerus with the top end of the locking steel plate body (1).

2. The locking proximal humerus greater tuberosity rotator cuff footprint fracture plate of claim 1, wherein: The screw (204) is a 2.0 screw.

3. The locking proximal humerus large bicipital rotator cuff enthesis fracture plate of claim 1, wherein: The number of the screw holes (202) is two.

4. The locking proximal humerus large bicipital rotator cuff enthesis fracture plate of claim 3, wherein: The number of the suture holes (203) is three.

5. The locking proximal humerus large bicipital rotator cuff enthesis fracture plate of claim 4, wherein: Two of the screw holes (202) are respectively provided with one of the suture holes (203) near the edge of the positioning plate (201), and one of the suture holes (203) is arranged at the middle position between the two screw holes (202).

6. The locking proximal humerus large bicipital rotator cuff enthesis fracture plate of Claim 1, wherein: The thickness of the positioning plate (201) gradually decreases away from the top end of the locking steel plate body (1).

7. The locking proximal humerus large bicipital rotator cuff enthesis fracture plate of claim 1, wherein: The positioning plate (201) is an arc-shaped plate.

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