CN213525421U

CN213525421U - Distal tibia lateral locking plate

Info

Publication number: CN213525421U
Application number: CN202021293638.6U
Authority: CN
Inventors: 叶树; 居志杰; 谈进; 严迪恒; 甄伍凡; 李若城; 严忠良; 王翠
Original assignee: Changzhou Dazon Medical Devices Co ltd
Current assignee: Changzhou Dazon Medical Devices Co ltd
Priority date: 2020-07-04
Filing date: 2020-07-04
Publication date: 2021-06-25
Anticipated expiration: 2030-07-04

Abstract

The utility model relates to a shin bone distal end outside lockplate, which comprises a plate body, plate body integrated into one piece, a surface of plate body matches with the shape of shin bone distal end lateral surface and suits, the plate body includes trunk and head, trunk and head end to end connection are "L" shape, a plurality of one-level locking holes have been seted up on the trunk, a plurality of one-level locking holes evenly arrange along trunk length direction, the second grade locking hole has been seted up on the head, the length direction of head is evenly arranged along the second grade locking hole, the plate body still includes extension, extension is located the outside of trunk and head junction, extension and the equal fixed connection of trunk and head, a plurality of tertiary locking holes have been seted up in the extension. When this application had solved current lockplate and had carried out the operation that resets of fracture, lockplate was comparatively single to the fixed mode of shin bone, was difficult for carrying out good the fixing that resets to shin bone, and it is more various to have the coaptation mode that resets, and the selection of the position of screw in is more, improves the suitability to different fracture forms.

Description

Distal tibia lateral locking plate

Technical Field

The application relates to the technical field of medical equipment, in particular to a tibia far-end outer side locking plate.

Background

Fractures of the tibia are a common type of fracture, particularly in young groups and in older women with osteoporosis. Internal fixation therapy is one of the tibial fracture treatments, and among them, a bone plate and nail system is one of the most commonly used internal fixation methods. The principle of the internal fixation treatment mode is to cut a cut at the fracture end, place a bone fracture plate, enable the bone fracture plate to cross the fracture position, fix the bone fracture plate at the far and near ends of the fracture by using screws, and enable the skeleton at the fracture end to be effectively fixed. Therefore, the bone fracture plate has an appearance similar to the surface shape of the bone and is provided with screw holes for screws to pass through.

The traditional Chinese patent with publication number CN104586492A discloses a shin bone far-end outer side locking plate which comprises an L-shaped plate body, wherein a plurality of locking holes are uniformly distributed on the plate body, one end of the plate body is provided with a minimally invasive head used for reducing the stimulation of the plate body to soft tissues when the plate body is implanted, and the minimally invasive head is provided with a Kirschner wire hole which is convenient for a doctor to operate by using a Kirschner wire. According to the invention, the minimally invasive head used for reducing the stimulation of the plate body to soft tissues when the plate body is implanted is arranged at one end of the plate body, and the Kirschner wire hole convenient for a doctor to operate is formed in the minimally invasive head, so that the operation of the doctor is facilitated, and the stimulation to the soft tissues can be effectively reduced when the plate body is implanted.

The above prior art solutions have the following drawbacks: because the locking hole on the plate body is designed according to the preset direction, the fixing screw can only be installed according to the axis direction of the locking hole when screwed in, but in the actual operation process, the position of the fracture is often unpredictable, and the fracture reduction operation performed by adopting the locking plate has limitations and the possibility of unstable fixation.

SUMMERY OF THE UTILITY MODEL

To the not enough that prior art exists, the purpose of this application is to provide a shin bone distal end outside lockplate that bone-knitting route is various and the suitability is higher.

The above application purpose of the present application is achieved by the following technical solutions: the utility model provides a shin bone distal end outside lockplate, the package rubbing board body, plate body integrated into one piece, the shape of a surface and the shin bone distal end lateral surface of plate body matches and fits, the plate body includes trunk and head, trunk and head end to end connection are "L" shape, a plurality of one-level locking holes have been seted up on the trunk, and a plurality of one-level locking holes evenly arrange along trunk length direction, the second grade locking hole has been seted up on the head, the length direction of head is evenly arranged along the second grade locking hole, the plate body still includes extension portion, extension portion is located the outside of trunk and head junction, extension portion and the equal fixed connection of trunk and head, a plurality of tertiary locking holes have been seted up in the extension portion.

Through adopting above-mentioned technical scheme, the plate body matches with the shape in the shin bone distal end outside and suits, conveniently laminates with the shin bone surface mutually, need not to bend the adjustment at the operation in-process, improves the operation convenience. In the actual operation process, the fracture position of fracture has the variety, so set up outward extension portion on the plate body, can provide further supporting role to the skeleton on the one hand, simultaneously, through third locking hole, can follow different positions and carry out screw connection to shin bone, provide more operation scheme options for the doctor, improved this lockplate to the adaptability of different fracture forms.

The present application may be further configured in a preferred example to: the one-level rupture groove has been seted up to the one side of epitaxial portion, the one side that the one-level rupture groove was kept away from to epitaxial portion has seted up the second grade rupture groove, the one-level rupture groove sets up with the second grade rupture groove relatively, the one-level rupture groove and second grade rupture groove all are located the border department that the epitaxial portion is close to trunk portion and head, the shape of one-level rupture groove and second grade rupture groove matches with the profile of the outward flange of trunk portion and head junction and suits.

Through adopting above-mentioned technical scheme, seted up the rupture groove in epitaxial portion, can increase the plasticity of epitaxial portion, when clinical operation, the adjustment of buckling is conveniently carried out epitaxial portion, makes it and shin bone laminate more, provides the holding power for the shin bone. Meanwhile, in the clinical operation process, the tibia does not need to be further fixed through the extension part or the extension part has adverse effects such as interference on operation, and at the moment, a doctor can break the extension part through the breaking groove, so that the convenience of operation is improved.

The present application may be further configured in a preferred example to: a plurality of four-stage locking holes are formed in the edge, far away from the main part, of the head, the four-stage locking holes are evenly distributed along the length direction of the head, and the four-stage locking holes and the two-stage locking holes are arranged in a staggered mode.

Through adopting above-mentioned technical scheme, at clinical operation in-process, because the fracture form has the variety, only fix the shin bone through second grade locking hole, probably have the condition of local fixed insecure, have certain limitation. Therefore, the head is provided with the four-stage locking hole, the part which can not be fixed by the two-stage locking hole can be fixed, and the bone-knitting path is increased; the four-stage locking holes and the two-stage locking holes are arranged in a staggered mode, the area of the head is effectively utilized, and the possibility of interference of screws in bone connection is reduced.

The present application may be further configured in a preferred example to: one end of the main part, which is close to the head, is provided with a first-level guide pin hole, and one end of the head, which is far away from the main part, is provided with a second-level guide pin hole.

By adopting the technical scheme, a perforation space is provided for surgical suture, the operation of a doctor is facilitated, and the stimulation to soft tissues can be effectively reduced.

The present application may be further configured in a preferred example to: a plurality of pressure reduction grooves are seted up on the surface that trunk portion is close to the shin bone, and is a plurality of the pressure reduction grooves are evenly arranged along trunk portion length direction, and are a plurality of two rows of just being located the both sides of trunk portion length direction respectively are seted up to the pressure reduction groove.

Through adopting above-mentioned technical scheme, reduce the plate body and to the oppression of periosteum, the circulation of the shin bone surface blood of being convenient for is favorable to the healing of shin bone.

The present application may be further configured in a preferred example to: the first-level locking hole comprises a locking hole and a pressurizing hole, the locking hole and the pressurizing hole are partially overlapped, the outer contour of the first-level locking hole is 8-shaped, the locking hole is a tapered threaded through hole, and the pressurizing hole is a non-threaded through hole with an arc-shaped slope.

By adopting the technical scheme, the primary locking hole has the locking and pressurizing functions, the locking hole or the pressurizing hole can be selected for use according to clinical requirements, and the inner wall of the locking hole is provided with the thread, so that the plate body and the tibia are more firmly fixed and are not easy to slip; the pressurizing hole is provided with an arc-shaped slope, and the screwing angle of the screw can be adjusted according to clinical requirements, so that the high flexibility and the better treatment effect are achieved, and the reliability of fracture fixation is improved.

The present application may be further configured in a preferred example to: the aperture of the fourth-order locking hole is smaller than that of the second-order locking hole.

By adopting the technical scheme, the damage to the bone is reduced on the premise of ensuring the good fixing effect on the tibial fracture, and the healing recovery of the postoperative tibia is facilitated.

The present application may be further configured in a preferred example to: the plate body is made of medical titanium alloy.

By adopting the technical scheme, after the plate body is implanted into a human body, the human tissue is not easy to generate rejection reaction on the plate body, and the plate body has good biocompatibility.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the extension part is arranged on the plate body, so that a further supporting effect can be provided for bones, the tibia can be fixed from different positions through the third locking hole, more operation scheme choices are provided for doctors, and the applicability of the locking plate to different fracture forms is improved;

2. the one-level rupture groove and the second grade rupture groove have been seted up at epitaxial portion, can increase the plasticity of epitaxial portion, and the adjustment of conveniently buckling to epitaxial portion makes it laminate with the shin bone more, provides the holding power for the shin bone, if need not go on further fixedly to the shin bone through epitaxial portion, is convenient for break epitaxial portion, improves the convenience of operation.

Drawings

Fig. 1 is a front overall structural view of a distal tibial lateral locking plate according to this embodiment.

Fig. 2 is a schematic diagram showing the overall structure of the distal tibial lateral locking plate of this embodiment.

In the figure, 1, a plate body; 2. a trunk portion; 21. a primary locking hole; 211. a locking hole; 212. a pressurizing hole; 22. a first-level guide pin hole; 23. a pressure reducing tank; 24. a fifth-stage locking hole; 3. a head portion; 31. a secondary locking hole; 32. a second level guide pin hole; 33. a fourth stage locking hole; 4. an extension portion; 41. a first-stage breaking groove; 42. a tertiary locking hole; 43. a second-stage breaking groove.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, for the distal tibial lateral locking plate disclosed in the present application, the distal tibial lateral locking plate includes a plate body 1, the plate body 1 is integrally formed and made of medical titanium alloy, one surface of the plate body 1 is matched with the shape of the distal tibial lateral surface, the plate body 1 includes a main portion 2, a head portion 3 and an extension portion 4, the head portion 3 and the main portion 2 are connected end to form an "L" shape, and the extension portion 4 is located at the outer side of the joint of the main portion 2 and the head portion 3 and is fixedly connected with the main portion 2 and the head portion 3.

As shown in fig. 1, the trunk portion 2 is provided with a plurality of first-stage locking holes 21, the plurality of first-stage locking holes 21 are uniformly arranged along the length direction of the trunk portion 2, the first-stage locking holes 21 are composed of locking holes 211 and pressurizing holes 212, the locking holes 211 and the pressurizing holes 212 are partially overlapped, so that the outer contour of the first-stage locking holes 21 is in a shape of a letter "8", the locking holes 211 are tapered threaded through holes, and the pressurizing holes 212 are unthreaded through holes with arc-shaped slopes at the upper edges. In this embodiment, two five-stage locking holes 24 are further formed in the trunk portion 2, and the five-stage locking holes 24 are located at one end of the trunk portion 2 close to the head portion 3 and above the one-stage locking holes 21. A plurality of decompression groove 23 have been seted up on the one side that trunk 2 and shin bone laminated mutually, and this decompression groove 23 symmetric distribution evenly arranges along the length direction of trunk 2 in 2 length direction's of trunk both sides and a plurality of decompression groove 23, and a plurality of decompression groove 23 are located between two adjacent one-level locking holes 21, and in this embodiment, this decompression groove 23's shape is the arc. One end of the main portion 2 near the head portion 3 is provided with a first-level guide pin hole 22, and the first-level guide pin hole 22 is located above a fifth-level locking hole 24, in this embodiment, the first-level guide pin hole 22 is a kirschner pin hole.

As shown in fig. 1 and 2, the extending portion 4 is provided with a plurality of three-stage locking holes 42, in this embodiment, two three-stage locking holes 42 are provided. The first-stage breaking groove 41 and the second-stage breaking groove 43 are formed in the extending portion 4, and the first-stage breaking groove 41 and the second-stage breaking groove 43 are oppositely arranged and are respectively located on two opposite surfaces of the extending portion 4. The first-stage breaking groove 41 and the second-stage breaking groove 43 are both located at the edge of the extending portion 4 close to the trunk portion 2 and the head portion 3, the shapes of the first-stage breaking groove 41 and the second-stage breaking groove 43 are matched with the outline of the outer edge of the connection portion of the trunk portion 2 and the head portion 3, in the embodiment, the cross section of the first-stage breaking groove 41 is in a U shape, and the cross section of the second-stage breaking groove 43 is in a V shape, so that the extending portion is conveniently broken.

As shown in fig. 2, the head 3 is provided with a plurality of second-stage locking holes 31 and a plurality of fourth-stage locking holes 33, the plurality of second-stage locking holes 31 and the plurality of fourth-stage locking holes 33 are all uniformly arranged along the length direction of the head 3, the straight line where the plurality of second-stage locking holes 31 are located and the straight line where the plurality of fourth-stage locking holes 33 are located are parallel to each other, and the four fourth-stage locking holes 33 and the second-stage locking holes 31 are arranged in a staggered manner. The aperture of the fourth-stage locking hole 33 is smaller than that of the second-stage locking hole 31, and in this embodiment, the diameter of the fourth-stage locking hole 33 is 2.7mm, and the diameter of the second-stage locking hole 31 is 3.5 mm. A second-level guide pin hole 32 is opened at one end of the head portion 3 away from the trunk portion 2, and the second-level guide pin hole 32 is located above the second-level locking hole 31, in this embodiment, the second-level guide pin hole 32 is a kirschner pin hole.

The implementation principle of the embodiment is as follows: adopt lockplate to carry out interior fixed treatment to shin bone fracture is common treatment mode, and during the operation, the doctor places this shin bone distal end outside lockplate laminating on needs carry out the shin bone surface fixed, and at first, the doctor is according to the difference of shin bone fracture position, selects suitable locking hole 211 or pressurization hole 212, and the screw in is connected fixedly with the shin bone with main part 2 of plate body 1 to carry out crowded pressurization with the fracture crack of main part 2 department, make cracked skeleton couple together. Then, the doctor screws the screws into the secondary locking holes 31 on the head 3 according to the actual condition of the broken bone, and the broken bone at the head 3 is fixed by the screws. Finally, the doctor sews the soft tissue of the patient through the first guide pin hole and the second guide pin hole.

In the actual operation process, the fracture position of shin bone has the variety, and extension portion 4 can provide the supporting role to the skeleton, can fix the shin bone from different positions simultaneously, provides more operation scheme selection for the doctor for this lockplate has good practicality. The plasticity of extension portion 4 can be increased to one-level rupture groove 41 and second grade rupture groove 43, conveniently buckles the adjustment to extension portion 4, makes it laminate with the shin bone more, if need not make further the fixing to the shin bone through extension portion 4, also be convenient for the doctor with extension portion 4 rupture. Due to the diversity of fracture forms, the tibia fracture position at the head part 3 is fixed through the secondary locking hole 31, and the situation of infirm fixation may exist, so that the four-stage locking hole 33 is arranged, the tibia can be further fixed, the bone-knitting path is increased, and the applicability of the locking plate is further improved. The diameters of the quaternary locking hole 33 and the tertiary locking hole 42 are small, so that the tibia is convenient to heal after the operation.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a shin bone distal end outside lockplate, includes plate body (1), plate body (1) integrated into one piece, a surface of plate body (1) matches with the shape of shin bone distal end lateral surface and suits, plate body (1) includes trunk (2) and head (3), trunk (2) and head (3) end to end connection are "L" shape, a plurality of one-level locking hole (21) have been seted up on trunk (2), a plurality of one-level locking hole (21) evenly arrange along trunk (2) length direction, second grade locking hole (31) have been seted up on head (3), second grade locking hole (31) evenly arrange along the length direction of head (3), its characterized in that: the plate body (1) further comprises an extension part (4), the extension part (4) is positioned at the outer side of the joint of the main part (2) and the head part (3), the extension part (4) is fixedly connected with the main part (2) and the head part (3), a plurality of three-level locking holes (42) are formed on the extension part (4), one surface of the extension part (4) is provided with a one-level breaking groove (41), a second-stage breaking groove (43) is arranged on one surface of the extension part (4) far away from the first-stage breaking groove (41), the first-stage breaking groove (41) and the second-stage breaking groove (43) are oppositely arranged, the first-stage breaking groove (41) and the second-stage breaking groove (43) are both positioned at the edge of the extension part (4) close to the main part (2) and the head part (3), the shapes of the first-stage breaking groove (41) and the second-stage breaking groove (43) are matched with the outline of the outer edge of the joint of the main part (2) and the head part (3).

2. A lateral distal tibial locking plate according to claim 1, wherein: the head part (3) is far away from the edge of the main part (2) and is provided with a plurality of four-stage locking holes (33), the four-stage locking holes (33) are uniformly distributed along the length direction of the head part (3), and the four-stage locking holes (33) and the two-stage locking holes (31) are arranged in a staggered mode.

3. A lateral distal tibial locking plate according to claim 1, wherein: one end of the main part (2) close to the head part (3) is provided with a first-level guide pin hole (22), and one end of the head part (3) far away from the main part (2) is provided with a second-level guide pin hole (32).

4. A lateral distal tibial locking plate according to claim 3, wherein: the surface of the main part (2) close to the tibia is provided with a plurality of pressure reduction grooves (23), the pressure reduction grooves (23) are evenly distributed along the length direction of the main part (2), and the pressure reduction grooves (23) are provided with two rows of edges which are respectively located in the length direction of the main part (2).

5. A lateral distal tibial locking plate according to claim 1, wherein: the primary locking hole (21) comprises a locking hole (211) and a pressurizing hole (212), the locking hole and the pressurizing hole (212) are partially overlapped, the outer contour of the primary locking hole (21) is 8-shaped, the locking hole (211) is a tapered threaded through hole, and the pressurizing hole (212) is a non-threaded through hole with an arc-shaped slope.

6. A lateral distal tibial locking plate according to claim 2, wherein: the aperture of the fourth-stage locking hole (33) is smaller than that of the second-stage locking hole (31).

7. A lateral distal tibial locking plate according to claim 1, wherein: the plate body (1) is made of medical titanium alloy.