CN214231485U - Pubic symphysis steel plate - Google Patents

Abstract

The utility model relates to a pubic symphysis steel plate. The steel plate is provided with a plurality of screw holes along the extending direction; the inner side surface of the steel plate is anatomically attached to the upper pubic ramus; the extension direction of the central axis of the screw hole passes through the suprapubic symphysis or/and the inferior pubic symphysis while passing through the suprapubic symphysis according to the position of the screw hole, and the screw passing through the screw hole is used for fixing the suprapubic symphysis, the inferior pubic symphysis and the inferior pubic symphysis. Compared with the prior art, the utility model has the advantages that: the steel plate is designed in an anatomical mode, is well attached, and avoids repeated molding and bending of the steel plate; and the anatomical bone plate can assist in the reduction of the fracture. Meanwhile, the optimal nail placing route is set in advance, the maximum holding force is provided, and suprapubic symphysis, inferior pubic symphysis and pubic symphysis are perfectly fixed.

Description

Pubic symphysis steel plate

Technical Field

The utility model relates to a medical treatment consumptive material field, especially a pubis united dissection steel sheet.

Background

The pubic symphysis is the part where two joint auxiliary arches of the pelvis meet at the front part of the pelvis and is formed by the inner sides of the pubic bones at two sides, the joint surface is covered by transparent cartilage, a thicker fibrous cartilage disc is arranged between the two joint surfaces, the front ligament, the rear ligament, the upper ligament and the lower ligament are arranged around the joint and are all weaker, and the joint has the connection function really as an intra-joint fibrous cartilage plate (pubic symphysis disc). The pubis symphysis belongs to a micro joint, the displacement in the vertical direction is not more than 2mm, the horizontal rotation of the pubis symphysis does not more than 1.5 degrees, and the pubis symphysis participates in forming a pelvic ring to maintain the stability of the pelvic ring. Pubic symphysis is part of a pelvic injury, accounting for 24% of pelvic fractures. The pubis symphysis injury is divided into two types, firstly, the combined separation of the pubis is directly caused by violence, and the combined separation of the pubis is more than 2.5 cm; secondly, when the pregnant woman gives birth, the pelvic ligament is loosened to enable the pubic symphysis to be physiologically widened due to the rising progestational hormone and relaxin level, the physiological pubic symphysis widening can reach 3-7mm in the normal pregnancy of the pregnant woman, but under the action of factors such as overhigh luteolin secretion level, long production process, incorrect force during the time of delivery, over-obesity and the like, the pubic symphysis is separated by more than 10 mm. The pubis symphysis separation is clinically manifested by pain at the pubis symphysis, obvious tenderness, incapability of walking with underground load, difficulty in abduction and striding of affected limbs, positive pelvis squeezing separation test, and most cases of the pain may leave pubis symphysis functional pain or seriously affect the pelvis biomechanical performance if the treatment is improper or untimely.

Most displaced pelvic fractures require surgical treatment to correct the displaced fracture mass, restore pelvic ring stability and provide strong internal fixation to improve prognosis; the anterior ring is involved in the rotation and vertical stabilization of the pelvis. For the treatment of pubic symphysis, the currently common methods are external pelvic fixation brackets, cannulated screws and pedicle screw-rod systems (Infix). The external fixed bracket has insufficient biomechanical strength and poor vertical stress resistance effect; the postoperative life nursing of the patient is inconvenient and the risk of nail path infection is easily caused. While minimally invasive, cannulated staples, which may injure the spermatic cord or the round uterine ligament, may, with some caution, embed the bladder in the pubic symphysis. The pedicle screw-rod system (Infix) has small wound, so that the external fixing bracket is an internal bracket and is reliable in fixation; but the longer connecting rod compresses the femoral nerve (or lateral femoral cutaneous nerve) vascular bundle.

Disclosure of Invention

The utility model aims to provide a: provides a pubis combined dissection steel plate which is well fitted and perfectly fixes the upper pubis, the lower pubis and the pubis.

The utility model discloses a following technical scheme realizes: a pubis united anatomical steel plate comprises a steel plate 1, wherein a plurality of screw holes 2 are distributed on the steel plate 1 according to the extending direction of the steel plate; the inner side surface of the steel plate 1 is anatomically attached to the upper pubic ramus; the extension direction of the central axis of the screw hole 2 passes through the suprapubic symphysis or/and the inferior pubic symphysis while passing through the suprapubic symphysis according to the position of the screw hole 2, so that the screw passing through the screw hole 2 can fix the suprapubic symphysis, the inferior pubic symphysis and the inferior pubic symphysis.

Compared with the prior art, the utility model has the advantages that:

1. the steel plate is designed in an anatomical mode, is well attached, and avoids repeated molding and bending of the steel plate; and the anatomical bone plate can assist in the reduction of the fracture. Meanwhile, the optimal nail placing route is set in advance, the maximum holding force is provided, and suprapubic symphysis, inferior pubic symphysis and pubic symphysis are perfectly fixed.

2. The middle of the steel plate is not provided with a screw hole, so that a beginner can be prevented from putting a screw into the pubis combination surface.

3. The bottom of the bone fracture plate is provided with a groove, so that the compression on periosteum blood circulation can be reduced, and the healing of fracture is facilitated.

Drawings

Fig. 1 is a schematic structural view of a steel plate according to the present invention;

FIG. 2 is another schematic structural diagram of the steel plate according to the present invention;

fig. 3 is a surgical state diagram of the steel plate of the present invention.

Description of reference numerals: 1 steel plate, 11 non-hole areas, 2 screw holes, 31 eight-hole steel plate and 32 four-hole steel plate.

Detailed Description

The invention is explained in detail below with reference to the accompanying drawings:

as shown in fig. 1-3: the pubic symphysis steel plate comprises a steel plate 1, wherein a plurality of screw holes 2 are distributed on the steel plate 1 according to the extending direction of the steel plate; the inner side surface of the steel plate 1 is anatomically attached to the upper pubic ramus; the extension direction of the central axis of the screw hole 2 passes through the suprapubic symphysis or/and the inferior pubic symphysis while passing through the suprapubic symphysis according to the position of the screw hole 2, so that the screw passing through the screw hole 2 can fix the suprapubic symphysis, the inferior pubic symphysis and the inferior pubic symphysis.

Generally speaking the steel sheet present strip and laminate on the pubis, the middle part of steel sheet corresponds the pubis and combines the face, the screw hole is laid according to the preface to both ends. A screw hole near the pubic symphysis plane, which extends through the suprapubic ramus, the pubic symphysis, or through the suprapubic ramus, the pubic symphysis, the inferior pubic ramus (depending on where the steel plate is located on the suprapubic ramus); screw holes distal to the pubic symphysis surface extend through the suprapubic and infrapubic ramus. Thereby providing maximum holding force and perfectly fixing suprapubic symphysis, inferior pubic symphysis and pubic symphysis.

In actual use, two steel plates (as shown in fig. 3) with different specifications are generally arranged, one is an eight-hole steel plate (31), namely, four holes (as shown in fig. 1) on the left and the right are mainly connected to the position behind the inferior pubic bone; one is a four-hole steel plate (32), two holes on the left and right (as shown in fig. 2), which is attached primarily to the inferior pubis at a location anterior to the pubic bone.

The middle part of the steel plate is also provided with a non-hole area 11. The beginner is prevented from placing the screw into the pubic symphysis plane.

A plurality of grooves are formed in the inner side face of the steel plate 1. The design is mainly used for reducing the contact area, and because the similar design is more, the groove scheme is not shown in the drawing, the design is mainly used for reducing the contact surface of the steel plate 1 and the pubis, the compression on periosteum blood circulation can be reduced, and the fracture healing is facilitated. The design can adopt the scheme of designing a plurality of salient points and a wave type design which also reduce the contact surface.

The utility model discloses can look at under and carry out the fracture reduction, fixed intensity is reliable, is applicable to pubis joint separation and pubis ramus fracture. Anatomical form appearance laminating pubis goes up, need not bend moulding to the product, has obviously increased the fixed stability of fracture, and the perfect solution tradition rebuilds the steel sheet and bends fatigue fracture operation time extension, incision exposure time extension, anesthesia medicine increase, the bleeding scheduling problem that leads to because of moulding repeatedly.

While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.

Claims (3)

1. Pubic symphysis steel plate, its characterized in that: the steel plate comprises a steel plate (1), wherein a plurality of screw holes (2) are distributed in the steel plate (1) along the extending direction of the steel plate; the inner side surface of the steel plate (1) is anatomically attached to the upper pubic ramus; the extension direction of the central axis of the screw hole (2) passes through the suprapubic symphysis or/and the inferior pubic symphysis while passing through the position of the screw hole (2), and the fixation of the screw passing through the screw hole (2) on the suprapubic symphysis, the inferior pubic symphysis and the inferior pubic symphysis is realized.

2. Pubic symphysis plate according to claim 1, wherein: the middle part of the steel plate is also provided with a non-hole area (11).

3. Pubic symphysis plate according to claim 1, wherein: a plurality of grooves are formed in the inner side face of the steel plate (1).

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