CN218899650U - Sacroiliac joint bone fracture plate - Google Patents

Abstract

The utility model provides a sacroiliac joint bone plate, and belongs to the technical field of medical appliances. It has solved the problem how to improve the convenience of bone fracture plate in use. The sacroiliac joint bone fracture plate comprises a plate body, wherein two long-strip-shaped flank parts are arranged on the plate body, an included angle is formed between the length directions of the two flank parts, a long-strip-shaped bar-shaped hole is formed in the plate body, the length direction of the bar-shaped hole is arranged along the central line direction of the included angle between the two flank parts, and an internal thread is arranged on the hole wall of the bar-shaped hole. The bar-shaped holes on the bone plate can be connected with the manipulator, and the bone plate is moved by the manipulator to achieve the purpose of adjusting the position, so that the operation is convenient.

Description

Sacroiliac joint bone fracture plate

Technical Field

The utility model belongs to the technical field of medical appliances, and relates to a sacroiliac joint bone plate.

Background

The sacroiliac joint is composed of the auricular surface of the ilium and the auricular surface of the sacrum, and plays an important role in the stability of the pelvic girdle. When the pelvis is subjected to high energy injury, the sacroiliac joint ligaments and/or the surrounding sacrum, ilium will be damaged. When the muscles such as lumbar and abdominal muscles are pulled, the ilium is separated from the sacrum by upward movement and rotation, and the stability of the pelvic ring is seriously impaired.

For sacroiliac joint injury, a common operation mode for treating sacroiliac joint dislocation is to place a bone plate on the front side of the sacroiliac joint through the front access way and the upper rear access way, after the sacroiliac joint is reset manually, fix front column screws on the bone plate, respectively drive the front column screws on the sacrum and the ilium, realize the restriction of the bone plate on the positions of the sacrum and the ilium, maintain the reset position, then drive back column screws on the rear side of the ilium, and the back column screws pass through the ilium and the sacrum from the lower side to the upper side of the rear side of the ilium, so that the ilium and the sacrum are connected.

Bone plates are important components for maintaining the sacral and ilium reduction state, as in chinese patent [ application No.: CN201520736392] the bone plate disclosed comprises an integrally formed sacrum plate and two ilium plates, the two ilium plates are respectively located at two ends of the sacrum plate, the overall shape of the bone plate is fitted with the shape of the sacrum ilium joint, a pressurizing hole is formed in the ilium plate, in operation, the sacrum plate is placed at the sacrum ilium joint, the ilium plate is placed at the ilium position, screws are fixed on the sacrum plate, then the wall of the pressurizing hole is applied with force by means of an external tool to reset the sacrum and ilium, and then the ilium plate is fixed on the ilium by the screws.

Because many nerves are arranged on the peripheral side of the sacroiliac joint, after the bone plate is placed at the position of the sacroiliac joint, the position of the bone plate is required to be slightly adjusted to avoid the peripheral side nerves, but in use, medical staff is required to directly touch the bone plate to adjust the position of the bone plate, because the operation opening on a human body is smaller, the medical staff stretches into the position of the bone plate to easily block the sight of the operation opening, and the bone plate is placed at the position of the sacroiliac joint to block the sacroiliac joint, when the medical staff adjusts the position of the bone plate to avoid the peripheral side nerves, whether the adjusted bone plate still covers the sacrum and ilium uniformly is difficult to determine, so that the medical staff is required to adjust for many times, and the operation is very troublesome.

Disclosure of Invention

The utility model aims at solving the problems in the prior art, and provides a sacroiliac joint bone plate, which aims at solving the technical problems that: how to improve the convenience of the bone fracture plate in use.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a sacroiliac joint bone plate, includes the plate body, have two flank portions that all are rectangular form on the plate body, two form the contained angle between the length direction of flank portion, its characterized in that, have the bar hole that is rectangular form on the plate body, the length direction in bar hole is arranged along the central line direction of contained angle between two flank portions, be equipped with the internal thread on the pore wall in bar hole.

The plate body is covered at the position of the sacroiliac joint, so that the sacroiliac joint is positioned below the strip-shaped hole, at the moment, part of the plate body is positioned on the sacrum, the two flank parts are positioned on the ilium, the sacroiliac joint is exposed under the sight of medical staff through the strip-shaped hole, the internal threads on the wall of the strip-shaped hole can be connected with a common manipulator in the prior operation in a threaded manner, the medical staff moves the plate body by means of the manipulator, the sight shielding is reduced, the position adjustment of the plate body is more convenient and more accurate, the medical staff can monitor the resetting condition of the sacroiliac joint through the strip Kong Shishi when adjusting the position of the bone fracture plate, the adjustment precision is ensured, the length direction of the strip-shaped hole is arranged along the central line direction of an included angle between the two flank parts, so that when adjusting the position of the bone fracture plate, whether the position of the flank parts deviates can be judged through the relative position of the sacroiliac joint and the strip-shaped hole, and the manipulator can be externally connected with a guide device capable of guiding a rear column screw in the prior art, the guide device is connected with the plate body under the action of the manipulator, and the guide device can be driven into the position of the bone fracture screw through the guide screw on the bone fracture column.

In the sacroiliac joint bone plate, the inner side wall of the strip-shaped hole comprises an arc-shaped connecting wall, the central line of the connecting wall is obliquely arranged relative to the plate surface of the plate body, and the connecting wall is provided with the internal threads. The axis of the connecting wall is obliquely arranged so that the guide part connected in the mounting hole can also be obliquely arranged, the outer guide tube on the guide part can be positioned at the rear side of ilium, and in operation, medical staff can apply acting force by means of the guide part to adjust the position of the bone fracture plate.

In the sacroiliac joint bone plate, the plate body is L-shaped, the plate body comprises an outer side edge which is arc-shaped and is positioned at the outer side of the corner, and the plate body is provided with a plurality of through holes which are close to the outer side edge and are arranged along the outer side edge. The outer side of the plate body is placed on the sacrum, the front column screw is fixed on the sacrum through the through hole, the sacrum bone is thinner, the strength is lower, the front column screw can not be nailed in at any position, a plurality of through holes are arranged on the outer side, and in operation, medical staff can select through holes at proper positions to nail the front column screw according to actual conditions.

In the sacroiliac joint bone plate, one end of the strip-shaped hole in the length direction faces to the outer side edge, and the connecting wall is positioned at one end of the strip-shaped hole close to the outer side edge. The corner position part of the plate body is positioned on the sacrum, the part of the plate body is positioned on the ilium, the nerves arranged on the peripheral side of the sacrum are more, the connecting wall is close to the outer side edge, then the connecting position of the guide part and the plate body is also close to the outer side edge, and correspondingly, when the position of the bone fracture plate is adjusted by the guide part, the orientation calibration of the corner position of the plate body is more accurate, so that the peripheral nerves are fully avoided, and the medical staff can control the position of the steel plate more in place.

In the sacroiliac joint bone plate described above, the length of the flank portion is greater than the length of the other flank portion. The sacroiliac joints of patients with different body types are different in size, and the length of one side wing part is reserved, so that the patient with different body types can be cut according to the patients with different body types, and the applicability is ensured. In the sacroiliac joint bone plate, the lateral sides of the flank parts are provided with a plurality of deformation grooves which are concave and are arranged along the length direction. The structural strength of flank portion can be weakened in the setting of deformation groove, ensures that flank portion can deform under the exogenic action, more laminating patient's ilium shape.

Compared with the prior art, the sacroiliac joint bone plate has the following advantages:

1. by arranging the strip-shaped holes on the plate body, medical staff can observe the resetting condition of the sacroiliac joint through the strip-shaped holes when the plate body is covered on the sacroiliac joint.

2. The internal thread in the bar hole can be connected with the existing manipulator, medical staff can move the bone plate through the manipulator to avoid the peripheral nerve, so that the operation is better, the existing guide can be connected to the manipulator, no matter where the bone plate is moved, the guide is always connected with the plate body, the existence of the manipulator enables the rear column screw penetrating into the guide to face the bar hole, and the front column screw is not installed in the bar hole, so that the front column screw and the rear column screw cannot interfere with each other by means of the bar hole.

Drawings

Fig. 1 is a schematic perspective view of the sacroiliac joint bone plate.

Fig. 2 is a cross-sectional view of the present sacroiliac joint bone plate.

Fig. 3 is a schematic perspective view of the present sacroiliac joint bone plate as assembled with a manipulator and guide.

In the figure, 1, a side wing part; 1a, a deformation groove; 2. a plate body; 2a, a bar-shaped hole; 2b, through holes; 2c, inner side edges; 2d, outer side; 2e, connecting walls; 3. inserting a column; 4. a guide member; 4a, an outer guide tube; 4b, connecting rods; 4c, an inserting part; 5. and a manipulator.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, this sacroiliac joint bone fracture plate includes that the plate body 2 that is the L shape, the both ends of plate body 2 have the protrusion respectively and are rectangular flank portion 1, two flank portion 1 mutual tilt setting makes two flank portion 1 form the contained angle on length direction, flank portion 1 and plate body 2 adopt titanium alloy material to follow-up medical personnel force application buckle, the strip hole 2a that is rectangular shape has been seted up to the both sides face of running through on the plate body 2, the length direction in strip hole 2a is arranged along the central line direction of contained angle between two flank portion 1, the plate body 2 includes the outside limit 2d that is located the turning outside and the medial side 2c that is located the turning inboard, strip hole 2a is located between outside limit 2d and medial side 2c, strip hole 2a is in the both ends in length direction towards outside limit 2d and medial side 2c respectively, in this embodiment strip hole 2a is waist hole, the inside wall in combination with fig. 2a shows, the inside wall of strip hole 2a includes connecting wall 2e, connecting wall 2e is located on the inside wall 2e that is close to outside limit 2d on the face of side 2d, the inside wall is equipped with screw thread on the slope setting up on the face of the plate 2 e. Referring to fig. 3 again, the manipulator 5 is cylindrical, one end of the manipulator 5 has an external thread, the manipulator 5 is screwed on the connecting wall 2e, the guide 4 comprises a long connecting rod 4b and a cylindrical outer guide tube 4a, one end of the connecting rod 4b and the outer wall of the outer guide tube 4a are integrally formed, the outer guide tube 4a and the connecting rod 4b are arranged at right angles, the other end of the connecting rod 4b is bent to form an inserting part 4c which is consistent with the central line of the connecting wall 2e in inclination angle, the inserting part 4c of the connecting rod 4b is inserted into the other end of the manipulator 5, the medical staff firstly screws the manipulator 5 on the bone plate and places the bone plate at the sacroiliac joint position, then inserts the inserting part 4c into the manipulator 5, and makes the outer guide tube 4a at the rear side of the bar-shaped hole 2a, the medical staff can move the bone plate position by holding the manipulator 5, then screw the front column is respectively fixed at the steel plate position, then screw the rear column screw is screwed into the outer guide tube 2d, the rear column screw is made to face the direction of the connecting hole 2a, and the front column screw is prevented from being interfered by the front column screw and the rear column screw is arranged in the direction of the bar screw 2 a.

As shown in fig. 1, the outer side 2d and the inner side 2c are both arc-shaped, and the plate 2 is provided with a plurality of through holes 2b arranged along the outer side 2d and close to the outer side 2d, and the through holes 2b are located on the sacrum for fixing the front column screws.

As shown in fig. 1, the length of one of the wing parts 1 is greater than that of the other wing part 1, a certain length is reserved on one side of the wing part 1, so that the subsequent length adjustment is facilitated, a plurality of concave deformation grooves 1a are formed in two sides of each wing part 1, which are respectively connected with the outer side 2d and the inner side 2c, and are arranged along the length direction of the wing part 1, the structural strength of the wing part 1 is reduced by using the deformation grooves 1a, so that the wing part 1 can be cut and deformed to be more fit with the shape of the sacrum and ilium, and a plurality of screw holes are formed in the wing part 1 along the length direction and used for fixing screws.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although the terms bar-shaped hole, plate, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitations that are within the spirit of the present utility model.

Claims (6)

1. The utility model provides a sacroiliac joint bone plate, includes plate body (2), have two flank portions (1) that all are rectangular form on plate body (2), two form the contained angle between the length direction of flank portion (1), its characterized in that, have bar hole (2 a) that are rectangular form on plate body (2), the length direction in bar hole (2 a) is arranged along the central line direction of contained angle between two flank portions (1), be equipped with the internal thread on the pore wall in bar hole (2 a).

2. The sacroiliac joint bone plate as defined in claim 1, wherein the inner side wall of the bar-shaped hole (2 a) comprises an arc-shaped connecting wall (2 e), the center line of the connecting wall (2 e) is obliquely arranged relative to the plate surface of the plate body (2), and the connecting wall (2 e) is provided with the internal thread.

3. The sacroiliac joint bone plate as defined in claim 2, wherein the plate body (2) is L-shaped, the plate body (2) includes an outer side (2 d) that is curved and located outside the corner, and the plate body (2) has a plurality of through holes (2 b) that are adjacent to the outer side (2 d) and aligned along the outer side (2 d).

4. A sacroiliac joint bone plate as defined in claim 3 in which one end of the strip-shaped hole (2 a) in the length direction faces the outer side (2 d), and the connecting wall (2 e) is located at one end of the strip-shaped hole (2 a) near the outer side (2 d).

5. The sacroiliac joint bone plate as defined in claim 1 or 2 or 3 or 4, wherein one of the flank portions (1) has a length greater than the length of the other flank portion (1).

6. The sacroiliac joint bone plate as defined in claim 1, 2, 3 or 4, wherein the lateral side of the flank portion (1) has a plurality of deformed grooves (1 a) recessed and aligned in a longitudinal direction.

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