Screw-locking sacroiliac joint screw placement auxiliary device

A sacroiliac joint and auxiliary device technology, applied in the field of medical devices, can solve the problems of high vascular nerve injury rate, large trauma, and inability to place multiple screws at the same time, so as to reduce trauma, fast forming speed, and improve stability and accuracy effects

Pending Publication Date: 2020-02-11
ZIGONG NO 4 PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The sacrum is one of the important structures of the posterior pelvic ring, and pelvic fractures are often combined with sacral fractures; traditional or existing surgical methods cannot provide vertical stability of the pelvis, and are likely to cause greater trauma and a higher rate of vascular and nerve injury; At present, the conventional 3D printing guide plate assisted sacroiliac joint screw placement can more accurately assist the placement of the sacroiliac screw guide pin, but because the catheter and the base are integrated, the trauma is relatively large, and multiple screws cannot be placed at the same time

Method used

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  • Screw-locking sacroiliac joint screw placement auxiliary device
  • Screw-locking sacroiliac joint screw placement auxiliary device
  • Screw-locking sacroiliac joint screw placement auxiliary device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1-Figure 3 As shown, a tightening and locking sacroiliac joint screw insertion aid device includes a base 1 and a catheter 2, the base 1 is provided with a catheter locking base 3, and the catheter locking base 3 is provided with an axial A through hole 4, the axial through hole 4 is connected with the base 1 through, the inner wall of the catheter locking base 3 is provided with an internal thread 5; the inside of the catheter 2 is provided with a guide hole 6 along the length direction of the catheter, The guide hole 6 communicates with the axial through hole 4, and the outer wall of the conduit 2 near the end of the conduit locking base 3 is provided with an internal thread 5 corresponding to the internal thread 5 on the inner wall of the conduit locking base 3. External thread 7, the conduit 2 is threadedly connected with the conduit locking base 3.

[0030] When in use, make an incision along the patient's posterior superior iliac spine, carefully ...

Embodiment 2

[0032] Such as figure 1 and figure 2 As shown, this embodiment is based on Embodiment 1, the base 1 is composed of the ilium positioning part 9 and the curved posterior superior iliac spine positioning part 8, and the ilium positioning part 9 fits the inner part of the ilium The surface conforms to the shape of the surface of the ilium, and the positioning part 8 of the posterior superior iliac spine is closely combined with the anatomical part of the posterior superior iliac spine.

[0033] The base 1 is a custom-made structure according to the patient's individual condition, which matches the shape of the patient's ilium surface, which facilitates the stable attachment of the base 1 to the ilium. The position of the nail point ensures that the nail placement is consistent with the preoperative design, which reduces the risk of surgery, and the curved posterior superior iliac spine positioning part 8 can more stably fit the patient's ilium.

Embodiment 3

[0035] Such as figure 1 As shown, this embodiment is based on Embodiment 1, the catheter locking base 3 is cylindrical, there are several catheter locking bases 3, and several catheter locking bases 3 are respectively facing different direction.

[0036] Several catheter locking bases 3 face in different directions, which can assist in simultaneously placing multiple screws in different directions.

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Abstract

The invention discloses a screw-locking sacroiliac joint screw placement auxiliary device. The screw-locking sacroiliac joint screw placement auxiliary device includes a base and a catheter, the baseis provided with a catheter locking base, an axial through hole is formed in the catheter locking base, the axial through hole is connected with the base in a through mode, and an internal thread is arranged on the inner side wall of the catheter locking base; a guiding hole in the length direction of the catheter is formed in the catheter, the guiding hole communicates with the axial through hole, an external thread corresponding to the internal thread on the inner side wall of the catheter locking base is arranged on the outer side wall of the end, close to the catheter locking base, of thecatheter, and the catheter is in threaded connection with the catheter locking base. The screw-locking sacroiliac joint screw placement auxiliary device has the advantages that the structure is simple, operation is convenient, screw placement is safe and accurate, and surgical incisions and wounds can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a tightening and locking type sacroiliac joint screw placement auxiliary device. Background technique [0002] The sacrum is one of the important structures of the posterior pelvic ring, and pelvic fractures are often combined with sacral fractures; traditional or existing surgical methods cannot provide vertical stability of the pelvis, and are likely to cause greater trauma and a higher rate of vascular and nerve injury; At present, the conventional 3D printing guide plate assisted sacroiliac joint screw placement can more accurately assist the placement of the sacroiliac screw guide pin, but because the catheter and the base are integrated, the trauma is relatively large, and multiple screws cannot be placed at the same time . Contents of the invention [0003] In order to solve the problems existing in the prior art, the present invention provides a tightening and ...

Claims

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Application Information

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IPC IPC(8): A61B17/92A61B17/90
CPCA61B17/92A61B17/90
Inventor 吴超邓佳燕李涛
Owner ZIGONG NO 4 PEOPLES HOSPITAL
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