Auxiliary device and fixing device for skull connection

Abstract

The utility model discloses the field of medical instruments, and particularly relates to an auxiliary device for skull connection and a fixing device.The auxiliary device for skull connection comprises a handle, the handle is fixedly connected with the top of a limiting plate, and the connecting device is placed between the side wall of a free bone flap and the side wall of a skull window through the handle; the contact area with the side wall of a free bone flap and the side wall of a skull window is increased in a surface contact mode, the supporting stability is improved, movement and deflection are not prone to occurring, installation can be completed by pulling the pull ring through the structure, taking-out is convenient after installation is completed, the connecting piece is completely arranged in a bone seam after installation, and the connecting piece is convenient to use. Hard protrusions cannot be formed on the outer surface of the skull, and the skull protection device also plays a positive role in mental health construction of a patient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the medical field especially is concerned with a kind of auxiliary device and fixing device for skull connection. BACKGROUND

[0002] Craniotomy is a surgical treatment method for treating intracranial diseases, and the skull needs to be opened and the lesion site needs to be exposed during the operation. When patients suffer from diseases such as cerebral hemorrhage and intracranial tumor, these intracranial lesions may need to be surgically removed. At this time, the positioning of the required operation site needs to be performed first, and then the skin needs to be incised, opened and the skull flap and the exposure of intracranial lesions are removed under general anesthesia. After the intracranial lesions are exposed, the lesion tissue is removed under a microscope or a neuroendoscope. After craniotomy, the skull flap needs to be returned most of the time, but the existing technology uses a milling cutter to open the skull. After milling, a gap is formed between the free bone flap and the normal skull. The bone pieces cannot be placed directly on the bone window, but titanium sheets can be used for connection. One end of the titanium sheet is placed on the edge of the bone window, and the other end is placed on the free bone flap. Titanium screws are used for fixation. According to the size of the bone window, a proper number of titanium nails and titanium sheets are selected to fix the skull. However, the nut of the titanium screw is left on the outer surface of the skull, forming a hard protrusion, which forms a hard protrusion subcutaneous nodule, is not beautiful, and has an adverse effect on the patient's psychology. At the same time, the titanium sheet fixed on the surface of the skull has poor fixation of the skull flap. In the early stage after the operation, if external force acts on the skin surface of the wound, the skull flap is easily depressed. Only reoperation can reset it. Therefore, the applicant has invented a skull flap connecting device. The skull flap connecting device is placed in the bone gap to support the free bone flap and the skull window, which can solve the above problems. However, the bone gap is too small, and it is not convenient to operate the skull flap connecting device to put it in and install it.

[0003] Therefore, the person skilled in the art is committed to developing a skull connecting auxiliary device and fixing device for facilitating the installation of the skull flap connecting device. UTILITY MODEL CONTENTS

[0004] In view of the above defects of the prior art, the technical problem to be solved by the utility model is to provide a skull connecting auxiliary device and fixing device for facilitating the installation of the skull flap connecting device.

[0005] To achieve the above-mentioned purpose, the utility model provides a skull connecting auxiliary device, which comprises a handle, and the handle is fixedly connected with the top of a limiting plate. This design can conveniently and accurately place the skull flap connecting device between the side wall of the free bone flap and the side wall of the skull window, improve the installation efficiency of the skull flap connecting device, and facilitate the removal of the equipment after installation.

[0006] Further, the handle is internally provided with a limiting crossbeam, the limiting crossbeam is provided with a fourth through hole, the fourth through hole is in sliding fit with the pull rod, and the top of the pull rod extends out of the fourth through hole upwards.

[0007] Further, the pull rod is connected with a pull ring.

[0008] Further, the handle is in a structure that is large at the top and small at the bottom.

[0009] The utility model also provides a skull fixing device which comprises the auxiliary device for skull connection.

[0010] Further, the bottom of the pull rod is detachably connected with the skull fixing device.

[0011] Further, the limiting plate is provided with a third through hole, and the third through hole is in sliding fit with the pull rod.

[0012] The auxiliary device for skull connection can be used in cooperation with the skull flap connecting device, and the installation efficiency and accuracy of the skull flap connecting device are improved.

[0013] The skull flap connecting device provided by the utility model adopts a surface contact mode to increase the contact area of the skull flap connecting device with the side wall of the free bone flap and the side wall of the skull window, improve the stability of support, and is not prone to moving and deflecting, and the structure is adopted, the installation can be completed by pulling the pull ring, the skull flap connecting device is convenient to take out after installation, the skull flap connecting device is completely arranged in the suture after installation, a hard object is not formed on the outer surface of the skull, and the structure has a positive effect on the mental health construction of patients. ACCURATE DRAWINGS

[0014] Figure 1 Fig. 1 is a structural schematic view of a handle in a specific embodiment of the utility model.

[0015] Figure 2 Fig. 2 is a structural schematic view of a skull fixing device in a specific embodiment of the utility model.

[0016] Figure 3 Fig. 3 is a structural schematic view of a skull flap connecting device in a specific embodiment of the utility model.

[0017] Figure 4 Fig. 4 is a front view of the skull flap connecting device in a specific embodiment of the utility model.

[0018] Figure 5 Fig. 5 is a sectional view of A-A in Fig. 4. Figure 4

[0019] ​1, top plate; 2, bottom plate; 3, support plate; 301, upper folding section; 302, outer extension section; 303, lower folding section; 4, pull rod; 501, first bending groove; 502, second bending groove; 601, first outer bending groove; 602, second outer bending groove; 603, first displacement groove; 604, second displacement groove; 701, first through hole; 702, second through hole; 703, third through hole; 704, fourth through hole; 8, limiting plate; 9, handle; 10, limiting cross beam; 11, pull ring. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings and examples, and it should be noted that in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] As shown in the drawings, Figures 1-2 A skull connecting auxiliary device includes a handle 9, the handle 9 is integrally provided with an upper large lower small structure, which is convenient to hold, the bottom of the handle 9 is fixedly connected with the top of the limiting plate 8, the inner middle segment of the handle 9 is provided with a limiting cross beam 10, the limiting cross beam 10 is provided with a vertically extending fourth through hole 704, the fourth through hole 704 is slidably connected with the pull rod 4, the top of the pull rod 4 is inserted into the fourth through hole 704 and extends out of the fourth through hole 704, the top of the pull rod 4 is connected with a pull ring 11, and pulling the pull ring 11 can drive the pull rod 4 to move upwards.

[0022] The utility model also provides a skull fixing device, which comprises a skull connecting auxiliary device as described above and a skull flap connecting device.

[0023] As shown in the drawings, Figures 3-5 A skull flap connecting device comprises a top plate 1 and a bottom plate 2, the top plate 1 and the bottom plate 2 serve as the mounting base of a support plate 3, the support plate 3 is arranged along the circumference of the top plate 1 in an arc shape, one end of the support plate 3 is connected with the top plate 1, and the opposite end is connected with the bottom plate 2, the support plate 3 can move radially outward, and the bottom plate 2 is provided with a pull rod 4.

[0024] In this embodiment, a first bending groove 501 is formed in the inner side wall of the support plate 3, the first bending groove 501 is a horizontally arranged opening structure, the inside of the opening structure is arc-shaped, the opening is larger at the outside than at the inside, a second bending groove 502 is arranged in parallel below the first bending groove 501, and the second bending groove 502 has the same structure as the first bending groove 501.

[0025] The first bending groove 501 and the second bending groove 502 divide the support plate 3 into three sections, from top to bottom, the upper bending section 301, the outer extension section 302 and the lower bending section 303.

[0026] In this embodiment, the first outer bending groove 601 is arranged at the inner side of the top of the support plate 3 and the top plate 1, the second outer bending groove 602 is arranged at the inner side of the bottom of the support plate 3 and the bottom plate 2, the first displacement groove 603 is arranged at the outer side of the top of the support plate 3 and the top plate 1, and the second displacement groove 604 is arranged at the outer side of the bottom of the support plate 3 and the bottom plate 2. The first outer bending groove 601, the second outer bending groove 602, the first displacement groove 603 and the second displacement groove 604 are all circular opening structures. In use, the upper bending section 301 is flipped outward at the top under stress, compressing the first displacement groove 603. When the two opening side walls of the first displacement groove 603 abut each other, the flipping is stopped. The bottom of the lower bending section 303 is flipped synchronously, compressing the second displacement groove 604. When the two opening side walls of the second displacement groove 604 abut each other, the flipping of the lower bending section 303 is stopped. At this time, the bottom of the upper bending section 301 and the top of the lower bending section 303 jointly push the outer extension section 302 to displace radially outward. The outer extension section 302 after displacement is in surface contact with the side wall of the free bone flap or the side wall of the skull window, increasing the stress area and making the support more stable and firm.

[0027] In this embodiment, the first through hole 701 is opened on the top plate 1, the second through hole is opened on the bottom plate 2, the limiting plate 8 is arranged on the top of the top plate 1, the third through hole is opened on the limiting plate 8, the axis of the first through hole 701, the second through hole and the third through hole 703 coincide, the bottom of the pull rod 4 is threadedly connected with the second through hole 702, and the top extends out of the third through hole 703 upward.

[0028] In this embodiment, the support plate 3 is 8 pieces, which are arranged circumferentially and spaced apart on the top plate 1 and the bottom plate 2. The support plate 3 is an arc-shaped plate. The top plate 1 and the bottom plate 2 are symmetrically arranged. The top plate 1, the bottom plate 2 and the support plate 3 are all made of medical deformable materials, such as composite titanium alloy, PK material, left-handed poly-lactic acid and L-lactide-glycolide, etc. Such materials can deform under stress, so that the support plate deforms outward.

[0029] In use, the bottom of the pull rod 4 is sequentially inserted into the first through hole 701 and the second through hole 702, and is threadedly connected with the second through hole 702, the skull bone flap connecting device is placed between the free bone flap and the skull, the support plate 3 is completely located in the suture, the pull ring 11 is pulled upward, the pull ring 11 drives the pull rod 4 to move in the same direction, the pull rod 4 drives the bottom plate 2 to move upward, at this time, the top of the top plate 1 abuts against the bottom of the limiting plate 8, the pull ring 11 is continuously pulled upward, the first bending groove 501 and the second bending groove 502 are bent in the same direction to drive the outer extension section 302 to displace outward to abut against the side wall of the free bone flap and the side wall of the skull window respectively, when the support plate 3 completes the deformation displacement, the pull ring 11 is rotated to make the bottom of the pull rod 4 disengage from the second through hole 702, then the pull rod 4 is pulled out of the first through hole 701 and the second through hole 702, the limiting plate 8 is taken out, and the installation is completed.

[0030] The preferred embodiments of the utility model are described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the conception of the utility model without creative labor. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the conception of the utility model should be within the protection scope defined by the claims.

Claims

1. An auxiliary device for cranial connection, characterized by: The handle (9) is fixedly connected with the top of the limiting plate (8); A limiting crossbeam (10) is arranged in the handle (9), the limiting crossbeam (10) is provided with a fourth through hole (704), the fourth through hole (704) is in sliding fit with the pull rod (4), and the top of the pull rod (4) extends out of the fourth through hole (704) upwards.

2. The skull attachment aid according to claim 1, characterized in that: The pull rod (4) is connected with a pull ring (11) at the top.

3. The skull attachment aid according to claim 1, wherein: The handle (9) is large at the top and small at the bottom.

4. A skull fixation device, characterized by: The auxiliary device for connecting skull comprises the auxiliary device for connecting skull as claimed in any one of claims 1-3.

5. The skull fixation device of claim 4, wherein: The bottom of the pull rod (4) is detachably connected with the skull flap fixing device.

6. The skull fixation device of claim 5, wherein: The limiting plate (8) is provided with a third through hole (703), and the third through hole (703) is in sliding fit with the pull rod (4).

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