3D printing balloon compression puncture guide plate for prosopalgia

Abstract

The utility model relates to a medical auxiliary instrument, in particular to a 3D printing trigeminal neuralgia balloon compression puncture guide plate which comprises a guide plate body and a guide tube. The guide pipe is connected with the guide plate body through a supporting cantilever, and the guide pipe is in a semicircular pipe shape. According to the utility model, the guide tube in the form of the semicircular tube is adopted, so that the guide tube can be conveniently and quickly separated from a puncture instrument after the puncture is completed, and the guide tube can be quickly separated from the puncture instrument on the basis that the puncture instrument is not drawn out when the guide is not needed after the puncture is completed; and the operation field interference and the operation interference caused by the puncture guide plate are reduced.

Description

Technical Field

[0001] The utility model relates to medical auxiliary instruments, specifically a 3D printed puncture guide plate. Background Art

[0002] A puncture guide plate is a type of puncture guiding instrument used in puncture sampling and minimally invasive surgery. It generally includes a guide plate body attached to the surface of human tissue and capable of forming a stable fixation, and a guiding channel provided on the guide plate body. When in use, the guide plate body is first fixed on the patient's body surface, and then the puncture component is guided through the guiding channel for puncture.

[0003] In recent years, with the rapid development of 3D printing technology, the individually customized guide plate relying on 3D printing has gradually come into the public view. By comprehensively scanning the patient's body surface tissue and lesion tissue, it can construct a guide plate body that meets the individual differential requirements, not only with higher accuracy but also better individual adaptation, which has a positive significance for the lean development of medical diagnosis and treatment.

[0004] However, the puncture guide plates currently widely used on the market mainly have the following problems:

[0005] 1. The attachment tissue of the guide plate body is directly selected on the body surface corresponding exactly to the target puncture position, and then the guiding channel is constructed on the guide plate body. By opening a guiding hole or a lengthened guiding hole on the guide plate body to form the guiding channel, the puncture component is used to perform puncture through the guiding channel. However, this causes the body surface at the puncture target position to be completely covered by the guide plate body, occupying the surgical space and being unfavorable for the deployment and operation of instruments.

[0006] 2. The selection of the body surface fixation tissue relied on by the guide plate body is still not stable enough. It mainly depends on the skin on the body surface or a single bony feature. When constructing the guiding channel, it is difficult to form a truly high-precision positioning. There is still a large room for improvement in the selection of the positioning basis.

[0007] 3. The construction of the guiding channel of the existing puncture guide plate adopts a closed structure, which is usually a round hole or a round tube. In this structural form, after the puncture is completed, the puncture component cannot be separated from the guiding channel. That is to say, after the puncture is completed and the guiding channel is no longer required to play a guiding role, since the puncture component cannot be separated from the guiding channel, the puncture guide plate has to be retained, which also causes great interference to the surgical field and operation. Summary of the Invention

[0008] The purpose of the utility model is to provide a 3D printed trigeminal neuralgia balloon compression puncture guide plate that can realize the detachment of the guide plate in time after the puncture is completed.

[0009] The technical solution adopted by the present utility model is as follows: A 3D printing balloon compression puncture guide plate for trigeminal neuralgia, comprising a guide plate body and a guide tube;

[0010] The guide tube is connected to the guide plate body through a support cantilever, and the guide tube is in a semi-cylindrical shape.

[0011] Preferably, the open side of the semi-cylindrical guide tube faces away from the support cantilever.

[0012] Preferably, a detachable guide cover is provided on the open side of the guide tube. The guide cover is also in a semi-cylindrical shape, and the guide tube and the guide cover jointly form a guide channel.

[0013] Preferably, concave card slots are provided on the outer side walls on both sides of the guide tube, and card edges matching the card slots are provided on both sides of the guide cover. The card edges of the guide cover can be inserted into the card slots along the length direction of the guide tube.

[0014] Preferably, the card slots extend from the head end of the guide tube to near the tail end.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The guide tube in the form of a semi-cylindrical tube can be conveniently and quickly separated from the puncture instrument after the puncture is completed. When the guiding is no longer required after the puncture is completed, the guide tube can be quickly detached from the puncture instrument without withdrawing the puncture instrument, reducing the interference with the surgical field and operation caused by the puncture guide plate itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model when the support cantilever is an arc-shaped bent arm;

[0017] Figure 2 is a schematic structural diagram of the present utility model when the support cantilever is a corner bent arm;

[0018] Figure 3 is Figure 2 a schematic structural diagram of the structure shown in when provided with an arc-shaped connecting section;

[0019] Figure 4 is a schematic structural diagram of the present utility model when provided with a nose tip fixing curved surface and a nose side fixing curved surface;

[0020] Figure 5 is a schematic structural diagram of a preferred real-time mode of the guide tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4 the shown puncture guide plate, which is mainly applied to the puncture guidance of the human head, such as: the puncture guidance of trigeminal neuralgia balloon compression, the puncture guidance in cerebral hemorrhage surgery, etc., to achieve the precise positioning of the puncture instrument. The puncture guide plate is modeled according to the scanning data of the patient and integrally formed by 3D printing. The scanning method can specifically be CT scanning or MRI scanning, or a combination of the two to obtain the scanning data and model. It is modeled according to the patient's head data (such as: superficial tissue data, bone data, lesion data, etc.), and then processed to obtain a puncture guide plate that best matches the physiological characteristics of the patient.

[0023] Finally, the 3D printing technology is directly used to integrally print and form the puncture guide plate. The puncture guide plate mainly includes a guide plate body 1 and a guide tube 2. The guide plate body 1 is worn on the patient's face and fixed with a head rope or other auxiliary tools, and the puncture instrument is guided by the guide tube 2 thereon. Compared with the traditional puncture guide plate, the present utility model has been improved mainly in three major structures, including: 1. The suspended structure of the guide tube; 2. The multi-point bone positioning structure of the guide plate body; 3. The open guide structure (non-closed) of the guide tube; Next, the above core improvement solutions will be elaborated in detail in conjunction with the accompanying drawings.

[0024] I. The suspended structure of the guide tube;

[0025] The present utility model abandons the traditional method of directly constructing the guide tube 2 (guide hole) on the guide plate body 1. Instead, the guide plate body 1 and the guide tube 2 are suspended and supported by a support cantilever 3, that is to say, the guide tube 2 is connected to the guide plate body 1 through the support cantilever 3. Of course, in this structure, the support cantilever 3 is also integrally formed with the guide plate body 1 and the guide tube 2 by 3D printing. Compared with the method of separate printing and then assembly, integral forming can effectively avoid assembly errors and make the puncture positioning accuracy higher.

[0026] Example 1: Taking the balloon compression puncture guide plate for trigeminal neuralgia in clinical practice as an example, currently in clinical practice for patients with trigeminal neuralgia, they can choose to be treated by balloon compression, also known as percutaneous microballoon compression. Relatively speaking, it is a unique surgical method, mainly suitable for patients who are elderly, weak, in poor physical condition and unable to tolerate surgery. It is recommended to choose percutaneous microballoon compression. The surgical method is to puncture the foramen ovale to the trigeminal ganglion and introduce a balloon, and the balloon is introduced into the cavity through the puncture needle, so as to compress the trigeminal ganglion, making the pain conduction of the patient significantly decreased, so as to achieve the ideal treatment purpose. Most patients can achieve ideal treatment effects after undergoing the surgery.

[0027] In the above-mentioned balloon compression for trigeminal neuralgia, the commonly used puncture guide plate in the prior art is a guide plate body attached to the patient's face. A guiding hole is directly formed on the guide plate body during 3D printing, and it is fixed on the patient's face for puncture guidance. Since the puncture position is on the patient's face, in order to ensure the stability of fixation, the guide plate body often has a relatively large area and will block the mouth. In this way, since the guide plate body completely covers the patient's oral area, other auxiliary operations such as intubation cannot be performed in the oral area during the puncture operation, that is, an operation space is reserved in the oral area. However, due to the opening and closing of the mouth, it will also cause the displacement of the guide plate body, resulting in guiding errors.

[0028] As Figure 4 shown in, a puncture guide plate adopting the solution of the present utility model connects the guiding tube 2 and the guide plate body 1 through a support cantilever 3. The guide plate body 1 does not need to be directly fixed on the face and in the area close to the mouth, but can choose to be positioned and fixed at relatively farther positions such as the eyebrow arch and nasal root bone. This way can flexibly adjust the fixing position of the guide plate body 1, and can choose other areas on the face with more obvious bony characteristics as the positioning area, rather than choosing nearby around the puncture target position.

[0029] Example 2: Taking the intracerebral hemorrhage puncture guide plate as an example, the existing intracerebral hemorrhage puncture guide plate is usually just a guide plate attached to the skin of the top of the head. A guiding hole is provided on the guide plate. When it is necessary to cooperate with a craniotomy, this method also causes great interference and will interfere with the operation space of the craniotomy. As Figure 1 shown in, when the support cantilever 3 is used to suspend and support the guiding tube 2, it is also possible to choose areas such as the eyebrow arch and nasal root bone with more prominent bony characteristics to fix the guide plate body 2.

[0030] Of course, according to needs, the support cantilever 3 of the present utility model can be a straight arm or a bent arm, but the bent arm is more common, and the bent arm can effectively avoid obstacles. Considering the support performance and obstacle avoidance performance comprehensively, generally, the included angle between a section of the support cantilever 3 close to the guide tube 2 and the guide tube 2 is 70-90°, and the angle should not be too large or too small. At the same time, according to the relative position of the support cantilever and its length, it can also adopt, for example, Figure 1 as shown, an arc-shaped bent arm or Figure 2 and 3 as shown, a corner bent arm. Generally, when the support distance is relatively long, >15 CM, the corner bent arm is more selected, and some protrusions on the face can be avoided through its larger corner. When the support distance is relatively short, ≤15 CM, the arc-shaped bent arm is more selected. At the same time, considering the support stability of the corner bent arm when the support distance is long, an arc-shaped connecting section 4 for connecting two sections of the support cantilever 3 can also be provided inside the corner of the support cantilever 3, and the setting of the arc-shaped connecting section 4 shall not affect the erection of the guide tube 2. Similarly, due to the limitations of the characteristics of the 3D printing material, for some materials with not particularly excellent support performance, because they are relatively soft, in order to prevent their deformation and ensure the positioning accuracy, a reinforcing rib (strengthening rib) extending along the length direction of the support cantilever 3 can also be provided on the surface of the support cantilever 3.

[0031] II. Multi-point bone positioning of the guide plate body;

[0032] The guide plate body 1 of the present utility model selects the positions of the superciliary arch and the nasal root bone (near the inner canthus of the eye and the bridge of the nose) with more prominent bone features for positioning the guide plate body 1. Once fixed, it can effectively prevent situations such as skin traction or displacement due to shaking, and ensure the accuracy of puncture positioning. Therefore, the guide plate body 1 of the present utility model includes a superciliary arch fixing curved surface 5 and a nasal root fixing curved surface 6 adapted to the bone physiological characteristics of the patient. The nasal root fixing curved surface 6 extends downward from the lower side of the middle section of the superciliary arch fixing curved surface 5, and the guide plate body 1 is integrally in a T shape. By forming multi-point cooperative bone fixation, the puncture guiding accuracy is ensured.

[0033] Generally, for the intracerebral hemorrhage puncture guide plate, as Figures 1-3 shown, its guide plate body 1 only needs a T-shaped structure including the superciliary arch fixing curved surface 5 and the nasal root fixing curved surface 6. At this time, the connection position between the support cantilever 3 and the guide plate body 1 is usually located on the superciliary arch fixing curved surface 5.

[0034] When it is used as a puncture guide plate for trigeminal neuralgia balloon compression, as Figure 4As shown in the figure, the guide plate body 1 further includes a nasal tip fixing curved surface 7 and a nasal side overhanging curved surface 8. The nasal tip fixing curved surface 7 extends downward from the lower part of the nasal root fixing curved surface 6 and can cover the patient's nasal tip. One side of the nasal tip fixing curved surface 7 extends left / right to form the nasal side overhanging curved surface 8. The connection position of the support cantilever 3 and the guide plate body 1 is located on the nasal side overhanging curved surface 8.

[0035] Theoretically, the position of the connection end of the support cantilever 3 and the guide plate body 1 on the guide plate body 1 follows the principle of proximity, that is, the position closest to the guiding tube 2 and with sufficient stability is used as the rooting point of the support cantilever 3. When the nasal side overhanging curved surface 8 is provided, one end of the support cantilever 3 is located in the middle of the nasal side overhanging curved surface 8, and the other end is located in the middle of the guiding tube 2. Although multi-point bone fixation is adopted, in order to further ensure the positioning accuracy, the transverse length of the guide plate body 1 at the eyebrow arch fixing curved surface 5 is not less than 8 cm, and the longitudinal length of the guide plate body 1 is not less than 8 cm.

[0036] III. Open guiding structure of the guiding tube;

[0037] The guiding tube 2 of the present utility model abandons the traditional closed circular tube form and adopts a semi-circular tube structure. While having the puncture guiding function, due to its non-closed structure, it is very convenient for the puncture instrument (such as a puncture needle) to separate from the guiding tube 2. After the puncture is completed, the fixation of the guide plate body 1 is released, and the guiding tube 2 can be directly separated from the side of the puncture instrument. For further convenience in operation, generally, the opening side of the semi-circular tube of the guiding tube 2 faces away from the support cantilever 3. As Figures 2-4 shown in the figure, that is to say, the rooting point of the support cantilever 3 on the guiding tube 2 is located on the side facing away from the opening of the semi-circular tube.

[0038] Of course, when the operation proficiency of the operating doctor is still insufficient, the guiding accuracy through the semi-circular guiding tube 2 has a certain difference compared with the closed type. For this reason, the present utility model can also adopt a combined guiding channel, that is, as Figure 5 shown in the figure, a detachable guiding cover 9 is provided on the opening side of the guiding tube 2. The guiding cover 9 is also in the form of a semi-circular tube, and the guiding tube 2 and the guiding cover 9 jointly enclose a guiding channel. The guiding cover 9 and the guiding tube 2 are printed separately, and the two can be flexibly detachably connected.

[0039] One of the better detachable connection forms is, as Figure 5As shown in the figure, concave clamping grooves 10 are provided on the outer side walls on both sides of the guiding tube 2, and clamping edges 11 that are matched with the clamping grooves 10 are provided on both sides of the guiding cover 9. The clamping edges 11 of the guiding cover 9 can be clamped into the clamping grooves 10 along the length direction of the guiding tube 2. On this basis, the clamping grooves 10 do not need to be set as through grooves. They can extend from the head end (close to the human body) of the guiding tube 2 to a position close to the tail end (far from the human body), leaving a retaining platform at the tail end. When combination is required, the guiding cover 9 can be inserted from one end to form a closed guiding channel. After use, the guiding cover 9 can be directly pulled out to form a semi-closed guiding channel, which is convenient for separation.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D printing balloon compression puncture guide plate for trigeminal neuralgia, comprising a guide plate body (1) and a guide tube (2); It is characterized in that: The guide tube (2) is connected to the guide plate body (1) through a support cantilever (3), and the guide tube (2) is in a semi-circular tubular shape.

2. The 3D printing trigeminal neuralgia balloon compression puncture guide plate according to claim 1, wherein: The opening side of the semi-circular tube of the guide tube (2) faces away from the support cantilever (3).

3. The 3D printing trigeminal neuralgia balloon compression puncture guide plate according to claim 2, wherein: A detachable guide cover (9) is provided on the opening side of the guide tube (2), and the guide cover (9) is also in a semi-circular tubular shape. The guide tube (2) and the guide cover (9) together form a guide channel.

4. The 3D printed puncture guide plate for balloon compression of trigeminal neuralgia according to claim 3, wherein: Concave clamping grooves (10) are provided on the outer side walls on both sides of the guide tube (2), and clamping edges (11) matching the clamping grooves (10) are provided on both sides of the guide cover (9). The clamping edges (11) of the guide cover (9) can be clamped into the clamping grooves (10) along the length direction of the guide tube (2).

5. The 3D printed puncture guide plate for balloon compression of trigeminal neuralgia according to claim 4, wherein: The clamping grooves (10) extend from the head end of the guide tube (2) to near the tail end.

Images