CN110801274A

CN110801274A - Anterior pelvic ring internal fixation bone fracture plate

Info

Publication number: CN110801274A
Application number: CN201911278703.XA
Authority: CN
Inventors: 吴丹凯; 彭传刚; 任广凯; 袁宝明; 刘贺; 吴丹华
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-02-18

Abstract

The invention belongs to the technical field of orthopedic medical instruments, and particularly relates to a pelvis front ring internal fixation bone fracture plate which comprises a head part, a neck part, a dry part and a tail part which are fixedly connected in sequence, wherein 3 rows of head part locking holes are formed in the middle of the head part, locking screws can be placed in a region close to the pubic bone union, the neck part is a junction region and is connected with the head part and the dry part on different planes, a neck incising mark is formed above the neck part, a dry part locking hole is formed in the middle of the dry part and can be used for placing the locking screws onto the pubic bone, a dry part incising mark is formed above the dry part, a locking hole for placing screws along the direction of the acetabulum incising mark. The invention has the advantages that the invention can effectively fix the fracture of the pelvis anterior ring, is suitable for the fracture of the pubis, and is particularly suitable for the fracture of the pubis near the pubis union region; the design of the bone fracture plate ensures that the fracture fixation near the pubis union region is more firm; does not need to stride the pubis for joint fixation, avoids the loss of the function of the pubis joint, is particularly suitable for the unmarried women and is beneficial to the birth and the fertility.

Description

Anterior pelvic ring internal fixation bone fracture plate

Technical Field

The invention belongs to the technical field of orthopedic medical instruments, in particular to a pelvic bone anterior intra-annular fixing bone fracture plate, and particularly relates to internal fixation treatment of pubic fracture.

Background

Pubic fractures are the most common pelvic fractures, requiring intra-fixation surgery for pubic fractures that affect pelvic stability or cause persistent pain. The operation aims to recover the symmetry and the stability of the pelvic ring, enable a patient to perform function exercise early, promote the function recovery of peripheral tissues and visceral organs and reduce the complications of bed rest. For pubic fractures, particularly fractures adjacent to the pubic symphysis, the pubic medial segment is too small to screw with common reconstructive bone plates without crossing the pubic symphysis.

According to the prior art, a reconstruction bone fracture plate is bound to be adopted to cross the pubic bone to complete the internal fixation of the pubic bone fracture. However, the pubic symphysis is formed by joining the two sides of the pubic symphysis by fibrocartilage, reinforced by the suprapubic ligament, the arcus pubis, and called the hemizygous joint, a micro-motion joint, by some. For internal fixation across the pubic symphysis, this means that the pubic symphysis is firmly fixed, resulting in loss of function of the pubic symphysis.

Disclosure of Invention

In order to overcome the defects of the background art, the invention provides a pelvis front ring internal fixation bone fracture plate.

The technical scheme of the invention is as follows: including fixed connection's head, neck, cadre, afterbody in proper order, be equipped with 3 rows of head locking holes in the middle of the head, can put into locking screw to closing on the pubic symphysis region, the neck is for joining the boundary region, connects different planar head and cadre, and the top is equipped with the neck incisure, be equipped with cadre locking hole in the middle of the cadre, can put into locking screw on the pubic symphysis, the cadre top is equipped with cadre incisure, the afterbody is equipped with the locking hole of putting the nail along acetabular incisure direction, can put into the passageway screw to the ilium pubic junction region.

Preferably, the shape of the cadre part is slightly arc-shaped and is matched with the anatomical shape of the upper front part of the pubis, and the tail part is bent into arc-shaped and is matched with the anatomical shape of the lower front part of the acetabulum.

Preferably, the number of the first row of head locking holes is 4, the number of the second row of head locking holes is 3, the number of the third row of head locking holes is 2, the direction of the lowermost locking hole of 1 first row below the first row of head locking holes is lower than the tangential direction of the pubic symphysis joint surface of the user, the direction of the 3 holes above the first row of head locking holes and the tangential direction of the head locking holes of the second row are consistent with the tangential direction of the pubic symphysis joint surface of the user, and the direction of the head locking holes of the third row is perpendicular to the plane of the head.

Preferably, the 3 rows of head locking holes are mated with 2.4mm or 2.7mm locking screws, the stem locking holes are mated with 3.5mm locking screws, and the tail locking holes are mated with 4.5mm locking screws.

Preferably, the number of the dry end locking holes is 3 to 5.

Preferably, a head Kirschner wire hole is formed in the head, a neck Kirschner wire hole is formed in the neck, and a tail Kirschner wire hole is formed in the tail.

Preferably, the number of the head kirschner wire holes is 5, the number of the neck kirschner wire holes is 1, and the number of the tail kirschner wire holes is 3.

The invention has the advantages that the head, the cadre and the tail of the invention are designed by the three-plane nail plate, which can effectively fix the fracture of the front ring of the pelvis and is suitable for the fracture of the pubis, including the fracture near the pubis union region, the fracture of the pubis ramus and the fracture of the iliopectineal junction region; the design of the bone fracture plate ensures that the fracture fixation near the pubis union region is more firm; the fixing is carried out without crossing the pubis combination, the loss of the pubis combination function is avoided, and the device is particularly suitable for unmarried women and beneficial to the birth and the fertility; the bone fracture plate is placed in the front lower part of the pubis and in the deep layer of adductor, so that the influence of the steel plate on sexual life and the irritation of soft tissues are avoided.

Drawings

Fig. 1-2 are schematic structural diagrams of embodiments of the present invention.

Fig. 3 is a schematic structural view of a product of the invention mounted on the anterior pelvic ring.

In fig. 1-3, head 1,

head locking holes

11, 12, 13, first row of lowermost locking holes 114, head k-wire hole 14, neck 2, neck k-wire hole 21, neck notch 22, stem 3, stem locking hole 31, stem notch 32, tail 4, tail locking hole 41, and tail k-wire hole 42.

Detailed Description

Embodiments of the invention are further described below with reference to the accompanying drawings:

as shown in fig. 1-3, the embodiment provides a pelvis front ring internal fixation bone fracture plate, which includes a head portion 1, a neck portion 2, a trunk portion 3, and a tail portion 4 fixedly connected in sequence, wherein 3 rows of

head locking holes

11, 12, and 13 are arranged in the middle of the head portion 1, a neck portion notch 22 is arranged above the neck portion 2, a trunk portion locking hole 31 is arranged in the middle of the trunk portion 3, a trunk portion notch 32 is arranged above the trunk portion 3, and a tail portion locking hole 41 is arranged on the tail portion 4.

The head part 1 is matched with a pubic symphysis area of the pubis of the user, the cadre part 3 is matched with the front part of the pubic ramus of the user, and the tail part 4 is matched with the front lower part of the acetabulum of the user. The neck incision 22 above the neck 2 serves to avoid the blockage of the pubic tubercle and facilitates the attachment of a bone plate. The incisions 32 on the shaft 3 facilitate the insertion of the suture tendon.

The fixation is completed by placing locking screws into the 3 rows of

head locking holes

11, 12, 13, the trunk locking hole 31 and the tail locking hole 41, so that the problem that the pubis medial section bone block is too small and the traditional process needs to cross the pubis for combined fixation is solved. The product of the invention keeps the function of pubis combined with the micro-joint, thereby leading the later recovery effect of patients to be better.

Because the bone of the human pelvis front ring is not a plane shape but has a point circular arc shape, in order to ensure that the bone fracture plate fixed in the pelvis front ring is jointed with the pelvis of the human body without gaps, preferably, the shape of the cadre part 3 is slightly arc-shaped and is matched with the anatomical shape of the upper front part of the pubis, and the tail part 4 is bent into arc-shaped and is matched with the anatomical shape of the front lower part of the acetabulum. The shape of the trunk portion 3 and the tail portion 4 may be made to fit to the shape of the user's bone.

In order to achieve better fixation of the fracture of the fractured part by the user using the product of the present invention, preferably, the number of the first row of head locking holes 11 is 4, the number of the second row of head locking holes 12 is 3, the number of the third row of head locking holes 13 is 2, the direction of the 1 first row of lowermost locking holes 114 below the first row of head locking holes 11 is lower than the tangential direction of the pubic symphysis joint of the user, the direction of the 3 holes above the first row of head locking holes 11 and the tangential direction of the second row of head locking holes 12 are consistent with the tangential direction of the pubic symphysis joint of the user, and the direction of the third row of head locking holes 13 is perpendicular to the plane of the head 1, so that the maximum holding force can be exerted. The adoption of 3 rows of

head locking holes

11, 12 and 13 forms a triangle, and has more reliable stability.

The effect of medical practice over multiple passes, and considerations of operability and cost of the surgeon's procedure. Preferably, the 3 rows of

head locking holes

11, 12, 13 are mated with 2.4mm or 2.7mm locking screws, the stem locking hole 31 is mated with 3.5mm locking screws, and the tail locking hole 41 is mated with 4.5mm locking screws. The locking screw of this specification has stronger fastening force, also can avoid using the locking screw of big specification to cause too big surface of a wound to the user, is convenient for the later stage to get the healing of locking screw.

The number of the trunk locking holes 31 is preferably 3 to 5 according to the characteristics of the user's age, body size, male and female, etc. The stem 3 is sized to fit exactly over the pubic ramus of the user.

When doing the operation, the doctor will usually use the kirschner wire to carry out temporary fixation, in order to facilitate the driving into of kirschner wire, preferably, be equipped with head kirschner wire hole 14 on head 1, be equipped with neck kirschner wire hole 21 on neck 2, be equipped with afterbody kirschner wire hole 42 on afterbody 4. The number of the head kirschner wire holes 14 is 5, the number of the neck kirschner wire holes 21 is 1, and the number of the tail kirschner wire holes 42 is 3.

The specific operation steps of the product of the invention are as follows:

1. to the pubis fracture of pelvis anterior ring, especially near the fracture of pubis union position, adopt traditional pubis union place ahead approach (Pfannenstimel incision approach), the incision position is lower, specifically is located the pubis union upper limb, prolongs to both sides according to the fracture position.

2. The skin, subcutaneous tissue, deep spermatic cord (male) exposed and protected, adductor tendon insertion at the upper margin of the pubic ramus, suprapubic, iliopectineal junction and near pubic symphysis were cut.

3. The fracture is reset, the novel anterior pelvic bone intra-annular fixing bone fracture plate is placed, and the Kirschner wires are sequentially driven into the head Kirschner wire hole 14, the neck Kirschner wire hole 21 and the tail Kirschner wire hole 42 for temporary fixation.

4. The proximal head 1 adopts the row nail technology, three rows of 2.7 or 2.4mm locking screws are placed in the three rows of

head locking holes

11, 12 and 13, and the fixation near the pubic symphysis area is completed; 3-5 locking screws with the diameter of 3.5mm are arranged in the cadre part locking hole 31 of the cadre part 3 to complete the pubic ramus fixation; for fracture of the combined iliopectineal junction area, a 4.5mm locking screw is required to be placed into the tail locking hole 41 of the tail 4 to complete fixation, and the screw is a channel screw at the acetabulum tangent line position.

The present embodiment should not be construed as limiting the invention, but any modification made based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. The utility model provides an internal fixed coaptation board in anterior pelvic bone ring which characterized in that: including fixed connection's head (1), neck (2), cadre (3), afterbody (4) in proper order, be equipped with 3 rows of head locking hole (11, 12, 13) in the middle of head (1), neck (2) top is equipped with neck trace (22), be equipped with cadre locking hole (31) in the middle of cadre (3), cadre (3) top is equipped with cadre trace (32), be equipped with afterbody locking hole (41) on afterbody (4).

2. The anterior pelvic internal fixation plate of claim 1, wherein: the shape of the cadre part (3) is slightly arc-shaped and is matched with the anatomical shape of the upper front part of the pubis, and the tail part (4) is bent into arc-shaped and is matched with the anatomical shape of the front lower part of the acetabulum.

3. The anterior pelvic internal fixation plate of claim 1, wherein: the quantity of first row head locking hole (11) is 4, the quantity of second row head locking hole (12) is 3, the quantity of third row head locking hole (13) is 2, 1 first row below locking hole (114) direction of first row head locking hole (11) below is on the lower side with user's pubic symphysis articular surface tangential direction, 3 hole directions and second row head locking hole (12) above first row head locking hole (11) are unanimous with user's pubic symphysis articular surface tangential direction, the direction in third row head locking hole (13) hole is perpendicular with the plane of head (1).

4. A anterior pelvic intra-annular fixation plate according to claim 3, wherein: the 3 rows of head locking holes (11, 12, 13) are matched with 2.4mm locking screws, the trunk locking hole (31) is matched with 3.5mm locking screws, and the tail locking hole (41) is matched with 4.5mm locking screws.

5. A anterior pelvic intra-annular fixation plate according to claim 3, wherein: the 3 rows of head locking holes (11, 12, 13) are matched with 2.7mm locking screws, the trunk locking hole (31) is matched with 3.5mm locking screws, and the tail locking hole (41) is matched with 4.5mm locking screws.

6. The anterior pelvic internal fixation plate of claim 1, wherein: the number of the dry part locking holes (31) is 3 to 5.

7. The anterior pelvic internal fixation plate of claim 1, wherein: be equipped with head kirschner wire hole (14) on head (1), be equipped with neck kirschner wire hole (21) on neck (2), be equipped with afterbody kirschner wire hole (42) on afterbody (4).

8. The anterior pelvic internal fixation plate of claim 7, wherein: the number of the head Kirschner wire holes (14) is 5, the number of the neck Kirschner wire holes (21) is 1, and the number of the tail Kirschner wire holes (42) is 3.