A surgical cranial fixation device

Abstract

This utility model provides a head fixation device for interventional surgery, relating to the field of medical device technology. It includes a head support base, a head support body, a head support fixation component, and a back pad. Both the head support fixation component and the head support body are mounted on the head support base. The head support fixation component is used to mount the head support base onto the operating table. The head support body has at least three sets of protrusions, which together form a head fixation area. This design effectively solves the problem of fixing and maintaining the patient's position during interventional radiofrequency ablation surgery for trigeminal neuralgia. The patient lies comfortably, maintaining a tilted-back posture during the procedure, ensuring the puncture angle remains unchanged, reducing the difficulty of the puncture surgery, shortening the operation time, significantly improving the success rate, significantly reducing surgical complications, and significantly improving the surgical outcome.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a head fixation device for interventional surgery. Background Technology

[0002] Trigeminal neuralgia (TN) is a recurrent, brief, paroxysmal, severe pain within the area innervated by the trigeminal nerve. It commonly affects the elderly and is primarily caused by the close contact between blood vessels and the nerve. When blood vessels harden, become tortuous, or elongate, they can easily compress the nerve, leading to demyelination of the trigeminal nerve root and thus inducing TN. Radiofrequency ablation is a commonly used treatment method that uses a special electric current to generate heat energy to destroy the nerve, effectively improving clinical symptoms. Traditional surgery often uses a C-arm for guidance and positioning. The C-arm requires adjusting the head position and repeatedly using fluoroscopy to adjust the puncture needle before puncture can be performed. However, this method is somewhat blind, as it cannot dynamically observe the puncture direction in real time, easily leading to postoperative puncture injury. The foramen ovale is a crucial anatomical structure that must be punctured; repeated punctures can easily damage the surrounding structures, causing serious complications.

[0003] CT-guided percutaneous radiofrequency ablation (RFA) of the foramen ovale is a novel surgical treatment method with advantages such as minimally invasiveness, precision, and high efficiency. It allows for CT-guided localization, ensuring the posterior wall of the foramen ovale is parallel to the puncture needle and maintaining precise puncture point location. Furthermore, this procedure enables rapid destruction of nerve fibers in the ganglion via RFA, effectively alleviating pain symptoms.

[0004] A crucial factor for the success of CT-guided percutaneous radiofrequency ablation (RFA) of the trigeminal ganglion via foramen ovale is maintaining a constant surgical position of the head throughout the procedure. However, this requires the patient to tilt their head back as far as possible, ideally perpendicular to the horizontal plane, where the line connecting the temporal bone articular process on the affected side and the corner of the mouth on the affected side is 3 cm lateral to the affected side. Given that many patients are obese, maintaining this position for an extended period is challenging, leading to potential head movement and changes in the surgical angle. This increases the difficulty of puncture, the number of punctures required, and the likelihood of complications, compromising the surgical outcome. Therefore, effective head fixation during the procedure is essential, hence this application. Utility Model Content

[0005] The purpose of this invention is to provide a head fixation device for interventional surgery, which can effectively fix the patient's head during the operation, solving the problems of increased puncture difficulty and difficulty in guaranteeing the surgical effect caused by the movement of the patient's head during the operation.

[0006] To address the aforementioned problems, this utility model provides a head fixation device for interventional surgery, comprising a head support base, a head support body, a head support fixing component, and a back pad. Both the head support fixing component and the head support body are mounted on the head support base. The head support fixing component is used to mount the head support base onto the operating table. The head support body has at least three sets of protrusions, which together form a head fixation area. The three sets of protrusions correspond to the top of the head and the two sides of the top of the head, respectively, achieving a three-point fixation effect on the head. An airbag is installed on the inner side of each protrusion, and the airbag can be adjusted by inflation to adapt to different head sizes. The back pad is inclined, with its higher side abutting against the head fixation area and its lower side flush with the operating table surface.

[0007] Optionally, the airbags are not limited to the three sets of protrusions; a semi-circular airbag can also be set on the top of the head to increase the number of airbags, improve comfort, and enhance the fixation effect after inflation.

[0008] Optionally, the airbag inflation / deflation port is located on the headrest base. Each airbag may have one inflation / deflation port, or all airbags may have one inflation / deflation port. The inflation / deflation port is connected to the airbag through a pipe or a channel in the headrest base. Alternatively, the airbag may have its own inflation / deflation port.

[0009] According to one embodiment of the present invention, the headrest fixing assembly includes two sets of L-shaped connecting frames disposed at the bottom of the headrest base. The two sets of L-shaped connecting frames are symmetrically arranged, and a space for fitting into the operating table is formed between the two sets of L-shaped connecting frames, thereby fixing the headrest base onto the operating table.

[0010] Optionally, the backrest and headrest base can be an integrated structure or separate structures.

[0011] According to one embodiment of the present invention, the back pad and the headrest base have a connecting structure, which makes the relative position between the back pad and the headrest base more accurate and avoids misalignment during use.

[0012] According to one embodiment of the present invention, the connecting structure includes a plug on the back pad and a slot on the headrest base. The plug is inserted into the slot to realize the docking and installation of the back pad and the headrest base. This connection method achieves a connection effect that is easy to disassemble. After the back pad is removed, the headrest body can be used alone as a head fixation headrest for cerebrovascular surgery.

[0013] According to one embodiment of the present invention, the back pad is provided with a back-shaped groove, which provides a more comfortable lying effect and plays a certain positioning role for the back, assisting the head to achieve a better fixation effect.

[0014] According to one embodiment of the present invention, the height difference of the back pad is 9~13cm, preferably 10cm.

[0015] According to one embodiment of the present invention, the headrest body is made of foam plastic.

[0016] According to one embodiment of the present invention, the height of the protrusion does not exceed 10cm.

[0017] The beneficial effects of this invention are that the three sets of protrusions can stably fix the patient's head, and since other parts of the head are not covered, comfort is improved while avoiding interference with the surgical procedure. Combined with the back pad, this design effectively solves the problem of fixing and maintaining the patient's position in interventional radiofrequency ablation surgery for trigeminal neuralgia. The patient lies comfortably, maintaining a tilted-back posture during the procedure, ensuring that the puncture angle remains unchanged, reducing the difficulty of the puncture surgery, shortening the operation time, significantly improving the success rate of the surgery, significantly reducing surgical complications, and significantly improving the surgical effect. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the headrest base, headrest body, and headrest fixing components;

[0020] Figure 2 A diagram showing a patient lying on a cranial fixation device during an interventional procedure.

[0021] Figure 3 This is a side view of a cranial fixation device used in interventional surgery. Detailed Implementation

[0022] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0023] An interventional surgical cranial fixation device, such as Figures 1-3 It includes a headrest base 2, a headrest body 3, a headrest fixing component 1, and a back pad 4.

[0024] The head support fixing component 1 and the head support body 3 are respectively set on the upper and lower parts of the head support base 2. The head support fixing component 1 is used to install the head support base 2 on the operating table. The head support body 3 includes at least three sets of protrusions 31. The protrusions 31 are preferably arc-shaped. The head support body 3 and the head support base 2 can be an integral structure or a separate splicing structure. The three sets of protrusions 31 form a head fixing area. The three sets of protrusions 31 correspond to the top of the head and the two sides of the top of the head, respectively, to achieve a three-point fixation effect on the head. An airbag 32 is installed on the inner side of the protrusions 31. The airbag 32 can be adjusted by inflation to adapt to different head sizes.

[0025] In other embodiments, the airbag 32 is not limited to the location of the three sets of protrusions 31. A semi-circular airbag can also be provided at the top of the head, or the number of airbags can be further increased to improve comfort and fixation after inflation.

[0026] Optionally, such as Figure 1 The airbag 32's inflation / deflation port can be located on the headrest base 2. Each airbag 32 can have one inflation / deflation port, or all airbags 32 can have one inflation / deflation port. The inflation / deflation port is connected to the airbag 32 through a pipe or a channel in the headrest base 2. Alternatively, the airbag 32 can have its own inflation / deflation port.

[0027] The height of the protrusion 31 generally does not exceed 10cm.

[0028] The three sets of protrusions 31 provide a stable fixation for the patient's head. Since other parts of the head are not covered, it improves comfort and avoids affecting the surgical procedure.

[0029] In this embodiment, the headrest body 3 is made of foam plastic, and the airbag 32 is preferably made of rubber.

[0030] like Figure 1 The headrest fixing assembly 1 includes two sets of L-shaped connecting brackets disposed at the bottom of the headrest base 2. The two sets of L-shaped connecting brackets are symmetrically arranged, such as... Figure 3 The space between the two sets of L-shaped connecting frames is used to fit into the operating table, which can fix the head support base 2 to the operating table. When the fixation stability is insufficient, a pad such as a plastic plate can be inserted between the L-shaped connecting frame and the bed to improve the fixation stability.

[0031] In other embodiments, the headrest fixing component 1 can also be fixed to the operating table by means of Velcro straps, ropes, etc.

[0032] like Figure 3 The back pad 4 is set at an angle, with its higher side connecting with the head fixation area and its lower side being flush with the operating table plane. The height difference of the back pad 4 is 9~13cm, preferably 10cm.

[0033] Optionally, the back pad 4 and the headrest base 2 can be an integrated structure or separate structures.

[0034] The back pad 4 is provided with a back-shaped groove 42, which provides a more comfortable lying effect and plays a certain role in positioning the back, helping the head to achieve a better fixation effect.

[0035] This design effectively solves the problem of patient positioning during interventional radiofrequency ablation surgery for trigeminal neuralgia. The patient lies comfortably, maintaining a head-tilted position throughout the procedure, ensuring the puncture angle remains unchanged, reducing the difficulty of the puncture, shortening the operation time, significantly improving the success rate, significantly reducing surgical complications, and significantly improving the surgical outcome.

[0036] Example 2:

[0037] Based on Embodiment 1, in this embodiment, the back pad 4 and the headrest base 2 have a detachable connection structure, which makes the back pad 4 and the headrest base 2 easy to assemble and operate. Back pads 4 of different lengths and inclinations can be used interchangeably. The connection structure also makes the relative position between the back pad 4 and the headrest base 2 more accurate, avoiding misalignment problems during use.

[0038] like Figure 2 , Figure 3 The connection structure includes a plug 41 set on the back pad 4 and a slot 21 set on the headrest base 2. There are at least two sets of plugs 41 and slots 21. The plugs 41 and slots 21 are preferably square plugs and square holes. The plugs 41 are inserted into the slots 21 to realize the docking and installation of the back pad 4 and the headrest base 2. This connection method realizes the connection effect of easy disassembly. After the back pad 4 is removed, the headrest body 3 can be used alone as a head fixation headrest for cerebrovascular surgery.

[0039] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. An interventional procedure head fixation device, characterized by: The device includes a headrest base (2), a headrest body (3), a headrest fixing component (1), and a back pad (4). The headrest fixing component (1) and the headrest body (3) are both installed on the headrest base (2). The headrest fixing component (1) is used to install the headrest base (2) on the operating table. The headrest body (3) includes at least three sets of protrusions (31). The three sets of protrusions (31) form a head fixing area. The three sets of protrusions (31) correspond to the top of the head and the two sides of the top of the head, respectively, to achieve a three-point fixation effect on the head. An airbag (32) is installed on the inner side of the protrusion (31). The airbag (32) is adjusted by inflation to adapt to different head sizes. The back pad (4) is inclined, with its higher side connected to the head fixing area and its lower side flush with the operating table plane.

2. The interventional procedure head fixation of claim 1, wherein: The headrest fixing assembly (1) includes two sets of L-shaped connecting frames set at the bottom of the headrest base (2), and the two sets of L-shaped connecting frames are symmetrically arranged.

3. An interventional procedure head fixation device according to claim 1 or 2, characterized in that: The back pad (4) and the headrest base (2) have a connecting structure.

4. The interventional surgical cranial fixator according to claim 3, characterized in that: The connection structure includes a plug (41) on the back pad (4) and a slot (21) on the headrest base (2). The plug (41) is inserted into the slot (21) to achieve docking and installation of the back pad (4) and the headrest base (2).

5. The interventional surgical cranial fixator according to claim 3, characterized in that: The back pad (4) is provided with a back-shaped groove (42).

6. The interventional surgical cranial fixator according to claim 1, characterized in that: The height difference of the back pad (4) is 10~13cm.

7. The interventional surgical cranial fixator according to claim 1, characterized in that: The headrest body (3) is made of foam plastic.

8. The interventional surgical cranial fixator according to claim 1, characterized in that: The height of the protrusion (31) does not exceed 10cm.

9. The interventional surgical cranial fixation device according to claim 1, characterized in that: The back pad (4) and the headrest base (2) are either an integrated structure or separate structures.

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