A posterior cranial extension device and its use method

Abstract

The present invention discloses a posterior skull extension device and a method of using the same, comprising a transverse rod, a longitudinal rod, an L-shaped adjustment block, an auxiliary bar, a No. 1 adjustment block and a No. 2 adjustment block, wherein the No. 1 adjustment block and the No. 2 adjustment block are provided on the transverse rod, and the ends of the transverse rod and the longitudinal rod are fixed on the L-shaped adjustment block, and the No. 1 adjustment block is provided with a heightening block, and both the heightening block and the No. 2 adjustment block are provided with auxiliary bar holes, and the auxiliary bar is arranged in the auxiliary bar holes; the heightening block is fixed on the No. 1 adjustment block; the present invention has a bilaterally symmetrical structure, and is fixed to the posterior skull of the patient by titanium plates on the fixing block and the titanium plates on the auxiliary bar. After the posterior skull of the patient is cut open during surgery, the nut on the auxiliary bar is rotated; the auxiliary bar is pulled backward to achieve the backward extension of the posterior skull, increase the enlarged posterior cranial cavity, and facilitate surgical operations.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a posterior cranial extension device and a method for using the same. Background Art

[0002] During craniofacial surgery, especially for craniosynostosis, internal posterior cranial distraction osteoblasts are often used in young children. However, these devices are affected by the curvature of the skull and cannot achieve the maximum extension and expansion of the posterior cranial cavity. To address this issue, the posterior cranial distraction osteoblast, inspired by the anterior cranial distraction osteoblast, was designed to address this deficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a posterior cranial extension device and its use method to solve the problem proposed in the above background technology that an internal posterior cranial distraction osteoblast is used for young children. This type of extender is affected by the curvature of the skull and cannot achieve the maximum extension and expansion of the posterior cranial cavity.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A posterior cranial extension device and its use method include a transverse rod 1, a longitudinal rod 2, an L-shaped adjustment block 3, an auxiliary bar 4, a first adjustment block 5, and a second adjustment block 6. The transverse rod 1 is provided with the first adjustment block 5 and the second adjustment block 6. The ends of the transverse rod 1 and the longitudinal rod 2 are fixed to the L-shaped adjustment block 3. The first adjustment block 5 is provided with a heightening block 12. The heightening block 12 and the second adjustment block 6 are both provided with an auxiliary bar hole 13. The auxiliary bar 4 is disposed in the auxiliary bar hole 13. The heightening block 12 is fixed to the first adjustment block 5. The auxiliary bar 4 can be selectively installed on adjustment blocks at different heights to facilitate the use of the auxiliary bar 4. The two ends of the transverse rod 1 are provided with the same transverse rod 1.

[0006] The L-shaped adjustment block 3 is provided with a transverse rod hole 10 and a longitudinal rod hole 11, and a bolt hole 8 is provided above the transverse rod hole 10 and the longitudinal rod hole 11. The transverse rod 1 passes through the transverse rod hole 10 and is installed in the bolt hole 8 by a bolt 7 to fix the transverse rod 1. The longitudinal rod 2 passes through the longitudinal rod hole 11 and is installed in the bolt hole 8 by the bolt 7 to fix the longitudinal rod 2.

[0007] The transverse bar 1 is passed through the transverse bar hole 10 on the first adjustment block 5 and the position of the first adjustment block 5 on the transverse bar 1 is adjusted by the bolt 7 set in the bolt hole 8 .

[0008] The height increasing block 12 of the second adjusting block 6 is fixed by the bolt 7. The height increasing block 12 is provided with the auxiliary bar hole 13, and the auxiliary bar 4 is provided on the auxiliary bar hole 13. A nut 14 is provided at one end of the auxiliary bar 4 close to the second adjusting block 6, and oblique teeth 15 are provided on both sides of the long side of the auxiliary bar 4.

[0009] A fixing block 9 is provided on one end of the longitudinal rod 2 away from the L-shaped adjustment member 3 , and a longitudinal rod hole 11 is provided on the fixing block 9 . The longitudinal rod hole 11 passes through the longitudinal rod 2 and is fixed to the end of the longitudinal rod 2 by the bolt 7 set in the bolt hole 8 .

[0010] A No. 1 titanium plate 16 is provided on the inner side of the fixing block 9 at the end of the transverse rod 1, and the No. 1 titanium plate 16 is fixed to the side of the fixing block 9 by a fixing screw 20. A steel wire hole 19 is provided at the end of the auxiliary bar 4, and a steel wire 18 is fixed on the steel wire hole 19. A No. 2 titanium plate 17 is provided at the end of the steel wire 18. The No. 1 titanium plate 16 and the No. 2 titanium plate 17 are fixed on the posterior skull of the patient when in use.

[0011] A method for using a posterior cranial extension device and a method for using the same, comprising the following steps:

[0012] S1: Fix the fixing block 9 to the end of the longitudinal rod 2, and adjust the relative position of the longitudinal rod 2 and the cross bar 1 by loosening the bolt 8 to adapt to the position of the occipital skull during surgery.

[0013] S2: Install the auxiliary bar 4 in the auxiliary bar hole 13 and adjust the position of the auxiliary bar 4.

[0014] S3: The fixing block 9 is connected to the No. 1 titanium plate 16, and the No. 2 titanium plate 17 is connected to the steel wire 18 and fixed on the auxiliary bar 4. After the patient's posterior skull is cut open during surgery, the No. 1 titanium plate 16 is fixed on the uncut skull, and the No. 2 titanium plate 17 is fixed on the patient's cut posterior skull flap. The nut 14 on the auxiliary bar 4 is rotated; the auxiliary bar 4 is pulled backward to achieve backward extension of the posterior skull.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention has a bilaterally symmetrical structure and is fixed to the patient's posterior skull through the titanium plates on the fixing block and the titanium plates on the auxiliary bar. After the patient's posterior skull is cut open during surgery, the nut on the auxiliary bar is rotated; the auxiliary bar is pulled backward to achieve backward extension of the posterior skull, increase the extended posterior cranial cavity, and facilitate surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the structure of the present invention in use;

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 3 This is one of the partial structural diagrams of the present invention;

[0020] Figure 4 This is the second schematic diagram of the partial structure of the present invention;

[0021] Figure 5 Schematic diagram of the auxiliary strip structure of the present invention;

[0022] Figure 6 This is one of the schematic diagrams of the L-shaped adjustment block structure of the present invention.

[0023] Figure 7 This is the second schematic diagram of the L-shaped adjustment block structure of the present invention;

[0024] Figure 8 This is a structural diagram of the No. 1 adjustment block of the present invention.

[0025] In the figure: 1. Horizontal rod; 2. Longitudinal rod; 3. L-shaped adjustment block; 4. Auxiliary bar; 5. Adjustment block No. 1; 6. Adjustment block No. 2; 7. Bolt; 8. Bolt hole; 9. Fixing block; 10. Hole position of horizontal rod; 11. Hole position of longitudinal rod; 12. Heightening block; 13. Hole of auxiliary bar; 14. Nut; 15. Bevel teeth; 16. Titanium plate No. 1; 17. Titanium plate No. 2; 18. Steel wire; 19. Hole for steel wire; 20. Fixing screw. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] A posterior cranial extension device and its use method include a transverse rod 1, a longitudinal rod 2, an L-shaped adjustment block 3, an auxiliary bar 4, a first adjustment block 5, and a second adjustment block 6. The transverse rod 1 is provided with the first adjustment block 5 and the second adjustment block 6. The ends of the transverse rod 1 and the longitudinal rod 2 are fixed to the L-shaped adjustment block 3. The first adjustment block 5 is provided with a heightening block 12. The heightening block 12 and the second adjustment block 6 are both provided with an auxiliary bar hole 13. The auxiliary bar 4 is disposed in the auxiliary bar hole 13. The heightening block 12 is fixed to the first adjustment block 5. The auxiliary bar 4 can be selectively installed on adjustment blocks at different heights to facilitate the use of the auxiliary bar 4. The two ends of the transverse rod 1 are provided with the same transverse rod 1.

[0028] The L-shaped adjustment block 3 is provided with a transverse rod hole 10 and a longitudinal rod hole 11, and a bolt hole 8 is provided above the transverse rod hole 10 and the longitudinal rod hole 11. The transverse rod 1 passes through the transverse rod hole 10 and is installed in the bolt hole 8 by a bolt 7 to fix the transverse rod 1. The longitudinal rod 2 passes through the longitudinal rod hole 11 and is installed in the bolt hole 8 by the bolt 7 to fix the longitudinal rod 2.

[0029] The transverse bar 1 is passed through the transverse bar hole 10 on the first adjustment block 5 and the position of the first adjustment block 5 on the transverse bar 1 is adjusted by the bolt 7 set in the bolt hole 8 .

[0030] The height increasing block 12 of the second adjusting block 6 is fixed by the bolt 7. The height increasing block 12 is provided with the auxiliary bar hole 13, and the auxiliary bar 4 is provided on the auxiliary bar hole 13. A nut 14 is provided at one end of the auxiliary bar 4 close to the second adjusting block 6, and oblique teeth 15 are provided on both sides of the long side of the auxiliary bar 4.

[0031] A fixing block 9 is provided on one end of the longitudinal rod 2 away from the L-shaped adjustment member 3 , and a longitudinal rod hole 11 is provided on the fixing block 9 . The longitudinal rod hole 11 passes through the longitudinal rod 2 and is fixed to the end of the longitudinal rod 2 by the bolt 7 set in the bolt hole 8 .

[0032] A No. 1 titanium plate 16 is provided on the inner side of the fixing block 9 at the end of the transverse rod 1, and the No. 1 titanium plate 16 is fixed to the side of the fixing block 9 by a fixing screw 20. A steel wire hole 19 is provided at the end of the auxiliary bar 4, and a steel wire 18 is fixed on the steel wire hole 19. A No. 2 titanium plate 17 is provided at the end of the steel wire 18. The No. 1 titanium plate 16 and the No. 2 titanium plate 17 are fixed on the posterior skull of the patient when in use.

[0033] A method for using a posterior cranial extension device and a method for using the same, comprising the following steps:

[0034] S1: Fix the fixing block 9 to the end of the longitudinal rod 2, and adjust the relative position of the longitudinal rod 2 and the cross bar 1 by loosening the bolt 8 to adapt to the position of the occipital skull during surgery.

[0035] S2: Install the auxiliary bar 4 in the auxiliary bar hole 13 and adjust the position of the auxiliary bar 4.

[0036] S3: The fixing block 9 is connected to the No. 1 titanium plate 16, and the No. 2 titanium plate 17 is connected to the steel wire 18 and fixed on the auxiliary bar 4. After the patient's posterior skull is cut open during surgery, the No. 1 titanium plate 16 is fixed on the uncut skull, and the No. 2 titanium plate 17 is fixed on the patient's cut posterior skull flap. The nut 14 on the auxiliary bar 4 is rotated; the auxiliary bar 4 is pulled backward to achieve backward extension of the posterior skull.

[0037] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the novel spirit and scope of the present invention. Such changes and improvements fall within the scope of the invention claimed. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A posterior cranial extension device, characterized in that: The invention comprises a transverse rod (1), a longitudinal rod (2), an L-shaped adjustment block (3), an auxiliary position bar (4), a first adjustment block (5) and a second adjustment block (6), wherein the transverse rod (1) is provided with the first adjustment block (5) and the second adjustment block (6), the ends of the transverse rod (1) and the longitudinal rod (2) are fixed on the L-shaped adjustment block (3), the first adjustment block (5) is provided with a heightening block (12), the heightening block (12) and the second adjustment block (6) are both provided with an auxiliary position bar hole (13), and the auxiliary position bar (4) is arranged in the auxiliary position bar hole (13); The L-shaped adjustment block (3) is provided with a transverse rod hole (10) and a longitudinal rod hole (11), and bolt holes (8) are provided above the transverse rod hole (10) and the longitudinal rod hole (11). The transverse rod (1) passes through the transverse rod hole (10) and is installed in the bolt hole (8) by means of bolts (7) to fix the transverse rod (1). The longitudinal rod (2) passes through the longitudinal rod hole (11) and is installed in the bolt hole (8) by means of bolts (7) to fix the longitudinal rod (2). The transverse rod (1) is passed through the transverse rod hole (10) on the first adjustment block (5) and the position of the first adjustment block (5) on the transverse rod (1) is adjusted by the bolt (7) arranged in the bolt hole (8); The heightening block (12) of the second adjusting block (6) is fixed by the bolt (7), the heightening block (12) is provided with the auxiliary bar hole (13), the auxiliary bar (4) is provided on the auxiliary bar hole (13), a nut (14) is provided at one end of the auxiliary bar (4) close to the second adjusting block (6), and oblique teeth (15) are provided on both sides of the long side of the auxiliary bar (4); A fixing block (9) is provided on one end of the longitudinal rod (2) away from the L-shaped adjustment block (3), and a longitudinal rod hole (11) is provided on the fixing block (9). The longitudinal rod hole (11) passes through the longitudinal rod (2) and is fixed to the end of the longitudinal rod (2) by the bolt (7) arranged in the bolt hole (8); A first titanium plate (16) is provided on the inner side of the fixing block (9) at the end of the transverse rod (1), and the first titanium plate (16) is fixed to the side of the fixing block (9) by a fixing screw (20). A wire hole (19) is provided at the end of the auxiliary bar (4), and a steel wire (18) is fixed on the steel wire hole (19), and a second titanium plate (17) is provided at the end of the steel wire (18).

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