CN214484594U

CN214484594U - Novel locking steel plate with low notch at rear side of lateral malleolus

Info

Publication number: CN214484594U
Application number: CN202022073514.3U
Authority: CN
Inventors: 王效; 林晨光; 林伏庆
Original assignee: Nanjing People's Hospital Of Luhe
Current assignee: Nanjing People's Hospital Of Luhe
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-10-26
Anticipated expiration: 2030-09-21

Abstract

The utility model relates to a novel locking steel plate with low incisura at the rear side of the lateral malleolus, which aims to reduce the problems of necrosis and infection of the skin at the lateral malleolus part caused by excessive traction, and the structure of the locking steel plate comprises a body part and a handle part; the handle part is sequentially provided with tension locking holes, the center of the body part is provided with a central tension hole, and the far end of the body part is provided with a locking hole. When placing, the plane at steel sheet place can be detained on the rib of the calf posterior spine by certain eccentric radian, and the distal end is placed to the long short intermuscular groove of fibula, and the distal end of steel sheet itself is thinner, is difficult for irritating the fibula long and short tendon. For diseases such as atrophy and degeneration of dermal fiber around ankle joint, the device can provide strong internal fixation and reduce the occurrence probability of long-term internal fixation loosening. Effectively reducing complications associated with the steel plate, such as fibula tendinopathy and the like; the external ankle far-end fracture block plays a role in pressurizing and fixing and is prevented from sliding towards the rear side of the external ankle; can optimize the operation steps of the operation and has wide prospect in clinical application.

Description

Novel locking steel plate with low notch at rear side of lateral malleolus

Technical Field

The utility model provides a novel locking steel sheet of low notch of lateral malleolus rear side for fibula distal end fracture internal fixation belongs to medical instrument equipment technical field.

Background

Lateral malleolus fractures are a common type of ankle injury, and epidemiological statistics show that the incidence of simple lateral malleolus fractures accounts for 50.8%. The fracture of the external ankle joint must be anatomically reduced, and the selection of the fixture comprises the closed kirschner wire tension band steel wire fixation, the internal fibula hook steel plate fixation and the fibula intramedullary nail technology.

The closed kirschner wire tension band steel wire fixing technology is used as an early common technology for the fracture of the lateral malleolus, can absorb the axial pressure between bone blocks, resist the fracture line tangent force and maintain the fracture reduction, and has the defects of poor torsion resistance and shear strength and poor internal fixing effect of the kirschner wire tension band and a tension screw. The fibular interlocking intramedullary nail is another fixing method for the external malleolus fracture, has smaller incision, higher applicability to patients with poor soft tissue conditions, can effectively protect the blood circulation of the fractured end, is more suitable for B-type fracture in Denis-weber, and has poor effect when other types of fracture are fixed; and the overlong screw used in the intramedullary nail internal fixation can stimulate the fibula long and short tendons; the narrow marrow cavity of the fibula may cause the marrow cavity to split and shift more when the main nail is inserted during the operation.

The fibula hook steel plate internal fixation mainly comprises a neutralization steel plate placed on the outer side of the fibula and an anti-slip steel plate on the rear outer side. For the outer side neutralized steel sheet, the following disadvantages mainly exist: firstly, the holding force of the screw on the far-end fracture block is weak, and the internal fixation may loosen and fail; secondly, under the condition of loose bone density of the outer ankle, the loose bone density is easy to cause the internal fixing material to penetrate the bone; finally, the steel plate must be placed outside to avoid the penetration of screws into the joint surface, and the fracture of the external malleolus is easy to cause skin infection and the leakage of internal objects due to poor subcutaneous blood circulation, poor soft tissue self-repairing capability of diabetics and high skin tension of the external malleolus bony prominence. The disadvantage of the posterior lateral antiskid steel plate is mainly reflected in the fibula tendon irritation sign, which may be expanded approximately in a triangle with the lateral malleolus, irregular anatomical shape, and the fusion of the periosteum at the posterior side of the lateral malleolus and the fibula tendon sheath and the large nut.

Disclosure of Invention

The utility model provides a novel locking steel sheet of low notch of lateral malleolus rear side synthesizes the excellent shortcoming of the distal fibula fracture internal fixation treatment more than, through reverse design, through placing the steel sheet in the lateral malleolus rear side, the effectual old company osteoporosis patient that has reduced then can appear the incision and sew up the difficulty because of its tissue elasticity is not good, the incision closure is bad often lead to secondary hydroncus of tissue, epidermis necrosis, the risk of infection. Simultaneously, through the analysis of ankle external structure and the design of novel steel sheet nail hole direction, can effectively pressurize and prevent to shift to the rear ankle fracture end, aim at is through going into the way from the back outside to reduce skin ankle part skin because of the necrosis, the infection problem that excessive tractive leads to.

The technical solution of the utility model is as follows:

the novel locking steel plate with low incisional marks on the rear side of the lateral malleolus structurally comprises a body part and a handle part; the handle part is provided with 3 tension locking holes which are sequentially arranged on the handle part; the body portion center is equipped with 1 central pulling force hole, and the internal side of somatic part distal end is equipped with 3 inboard locking holes, and the outside is equipped with 3 outside locking holes.

As the preferred scheme, the plane that the steel sheet place is equipped with certain eccentric radian, can detain on the fibula back ridge for the stalk portion can be with the better laminating of the bone ridge of fibula distal end rear side.

Preferably, the thickness of the steel plate decreases progressively as it extends from the junction of the body and the shank to the distal end of the body; when in use, the distal end is placed to the fibula long and short muscle intertrochanteric ditch, and the thin steel plate is not easy to irritate the fibula long and short muscle tendon.

Preferably, the handle part is 40-42 mm long and 8.0mm wide; the radius of the tension hole on the tension locking hole is 2.2mm, and the radius of the locking hole is 2.0 mm; the distance between every two tension locking holes is 15 mm; the distance between the edge tension locking hole and the tail end of the steel plate handle is 2.5-3.0 mm.

Preferably, the length of the body part is 48-50 mm, and the width of the body part is 18-20 mm; the radius of the central tension hole is 2.2mm, and the length of the central tension hole is 7-8 mm.

Preferably, the medial locking hole is oriented from posterior to anterior.

Preferably, the outer locking holes comprise 1 outer first locking hole and 2 outer second locking holes; the direction of the first locking hole on the outer side is from the rear of the fibula to the front of the fibula, and the direction of the second locking hole on the outer side is from the rear of the fibula to the front of the fibula, is 6-8 degrees out and is 10-15 degrees down.

Preferably, a plurality of Kirschner wire holes are formed in the far end and the outer side of the steel plate body part, so that temporary fixation is facilitated.

The utility model has the advantages that:

1) for the diseases of atrophy and degeneration of dermal fiber around the ankle joint, soft and thin soft tissue, hypoelasticity, diabetes, vascular occlusion of lower limbs and the like, the ankle joint fixing device can provide strong internal fixation and reduce the occurrence probability of long-term internal fixation loosening;

2) the soft tissues such as muscles on the surface of the steel plate are covered more, the fixture is not protruded, the foreign body sensation of a patient is low, and the complications such as fibula tenosis and the like related to the steel plate are effectively reduced;

3) can play pressurization fixed action to ankle joint distal end fracture piece to block its outside ankle joint rear slip, simultaneously, can optimize the operation step, allow only through ankle joint rear outside incision, solve ankle joint and ankle joint fracture simultaneously, the novel locking steel sheet of low notch of ankle joint has great prospect in clinical application.

Drawings

FIG. 1 is a schematic structural view of a novel locking steel plate with a low notch on the lateral malleolus.

In the drawing, 1 is a tension locking hole, 2 is a central tension hole, 3 is an inner locking hole, 4 is an outer first locking hole, 5 is an outer second locking hole, and 6 is a Kirschner wire hole.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1, a novel locking steel plate with a low notch at the rear side of the lateral malleolus, which has a total length of about 90mm, and comprises a body part and a handle part; the handle part is provided with 3 tension locking holes 1, and the tension locking holes 1 are sequentially arranged on the handle part; the body part center is equipped with 1 central tension hole 2, and the body part distal end inboard is equipped with 3 inboard locking holes 3, and the outside is equipped with 3 outside locking holes.

The plane at steel sheet place is equipped with certain eccentric radian, can detain on the rib behind the fibula for the stalk portion can be with the better laminating of the rib of fibula distal end rear side. The thickness of the steel plate gradually decreases as it extends from the junction of the body and the shank to the distal end of the body; when in use, the distal end is placed to the fibula long and short muscle intertrochanteric ditch, and the thin steel plate is not easy to irritate the fibula long and short muscle tendon.

The length of the handle is 40-42 mm, and the width is 8.0 mm; the length of the body part is 48-50 mm, and the width is 18-20 mm; the radius of the tension hole on the tension locking hole 1 is 2.2mm, and the radius of the locking hole is 2.0 mm; the distance between every two tension locking holes 1 is 15 mm; the distance between the edge tension locking hole 1 and the tail end of the steel plate handle is 2.5-3.0 mm.

The radius of the central tension hole 2 is 2.2mm, and the length is 7-8 mm. The direction of the inner side locking hole 3 is from the rear of the fibula to the front of the fibula. The outer locking holes comprise 1 outer first locking hole 4 and 2 outer second locking holes 5; the direction of the first locking hole 4 on the outer side is from the rear of the fibula to the front of the fibula, and the direction of the second locking hole 5 on the outer side is from the rear of the fibula to the front of the fibula, is 6-8 degrees out and is 10-15 degrees down. A plurality of Kirschner wire holes 6 are formed at the far end and the outer side of the steel plate body for temporary fixation.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The novel locking steel plate with low incisional marks on the rear side of the lateral malleolus is characterized by comprising a body part and a handle part; the handle part is provided with 3 tension locking holes (1), and the tension locking holes (1) are sequentially arranged on the handle part; the center of the body part is provided with 1 central tension hole (2), the inner side of the far end of the body part is provided with 3 inner side locking holes (3), and the outer side of the far end of the body part is provided with 3 outer side locking holes; the thickness of the steel plate gradually decreases as it extends from the junction of the body and the shank to the distal end of the body; when in use, the distal end is placed to the fibula long and short muscle intertrochanteric ditch, and the thin steel plate is not easy to irritate the fibula long and short muscle tendon.

2. The lateral malleolus posterior low notch novel locking steel plate of claim 1, wherein the plane of steel plate is provided with a certain eccentric radian and can be buckled on the fibula posterior spine, so that the handle can be better attached to the spine at the posterior side of the distal fibula.

3. The lateral malleolus posterior low-notch novel locking steel plate as claimed in claim 2, wherein the shank is 40-42 mm long and 8.0mm wide; the radius of the tension hole on the tension locking hole (1) is 2.2mm, and the radius of the locking hole is 2.0 mm; the distance between every two tension locking holes (1) is 15 mm; the distance between the edge tension locking hole (1) and the tail end of the steel plate handle is 2.5-3.0 mm.

4. The lateral malleolus posterior low-notch novel locking steel plate as claimed in claim 1, wherein the body portion is 48-50 mm long and 18-20 mm wide; the radius of the central tension hole (2) is 2.2mm, and the length of the central tension hole is 7-8 mm.

5. The lateral malleolus posterior low notch novel locking steel plate of claim 4, characterized in that the medial locking hole (3) is oriented from posterior to anterior.

6. The lateral malleolus posterior low notch novel locking steel plate of claim 4, characterized in that the lateral locking holes comprise 1 lateral first locking hole (4) and 2 lateral second locking holes (5); the direction of the first locking hole (4) on the outer side is from the rear of the fibula to the front of the fibula, and the direction of the second locking hole (5) on the outer side is from the rear of the fibula to the front of the fibula, is 6-8 degrees outwards and is 10-15 degrees downwards.

7. The lateral malleolus posterior low notch novel locking steel plate of claim 1, characterized in that the distal and lateral sides of the body are provided with a plurality of k-wire holes (6) for temporary fixation.