3D printing individualized navigation template for ventricular puncture surgery

Abstract

The utility model relates to the technical field of medicine, in particular to a 3D printing individualized navigation template for ventricular puncture surgery, which comprises a 3D puncture guide plate, a sleeve and a cannula. The 3D puncture guide plate is mounted at a preoperative positioning point of skin in an operative area of a patient, the sleeve is fixedly connected to one side of the 3D puncture guide plate, and a clamping groove is formed in the inner wall of the sleeve; the casing pipe is movably connected to the interior of the sleeve, the outer wall of the casing pipe is fixedly connected with a clamping block, and the clamping block is matched with the clamping groove; through the arrangement of the clamping groove and the clamping block, when the cannula is installed in the sleeve, the clamping block is clamped into the clamping groove, the stability of the cannula is guaranteed, and therefore when a brain puncture needle is inserted, the cannula can be stably inserted, the situation that the puncture effect is affected due to shaking is avoided, the puncture precision is improved, and the operation time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, specifically a 3D-printed personalized navigation template for ventricular puncture surgery. Background Technology

[0002] Hypertensive intracerebral hemorrhage (HICH) accounts for approximately 75% of spontaneous intracerebral hemorrhages and is characterized by high morbidity, high disability rate, and high mortality rate. For HICH patients with surgical indications, timely surgical intervention is crucial to reduce intracranial pressure, alleviate brain tissue compression, and relieve brain herniation. This is of great significance in saving lives and reducing secondary brain damage. The most common site of hypertensive intracerebral hemorrhage is the basal ganglia. Lateral or medial expansion of the hematoma compressing important brain structures can cause motor and sensory dysfunction, severely impacting the patient's health. With the development of minimally invasive surgery, its effectiveness in treating hypertensive basal ganglia hemorrhage has been significant, providing a guarantee for patient recovery. Every neurosurgeon aims for precise localization, shortened operation time, and reduced trauma during intracranial hematoma evacuation surgery. Therefore, when developing a surgical plan, all possible intraoperative situations should be comprehensively considered, and preventative measures should be taken. For neurosurgical hematoma evacuation surgery in hypertensive intracerebral hemorrhage, the goal should be minimally invasive while achieving accurate and efficient hematoma removal, minimizing surgical time, and reducing postoperative neurological dysfunction. Precise intraoperative hematoma localization plays a crucial role in improving surgical efficiency. For hypertensive intracerebral hemorrhage patients with stable vital signs and surgical indications, 3D Slicer medical image post-processing software is used to reconstruct the patient's facial contours and hematoma model based on thin-slice images from head CT scans. A puncture guide is designed using the software's guide plate design plugin, and the data is then imported into a 3D printer for printing. During the surgery, an endoscopic sleeve is inserted with the assistance of the 3D guide plate, followed by endoscopic hematoma removal, completing the procedure.

[0003] However, during surgery, the insertion cannula cannot be stably fixed to the existing 3D-printed personalized navigation template, which affects the accuracy of inserting the brain needle and results in unsatisfactory puncture results. Utility Model Content

[0004] The purpose of this invention is to provide a 3D-printed personalized navigation template for ventricular puncture surgery to solve the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A 3D-printed personalized navigation template for ventricular puncture surgery includes a 3D puncture guide plate, a sleeve, and a cannula;

[0007] The 3D puncture guide plate is installed at the preoperative positioning point on the skin of the patient's surgical area. The sleeve is fixedly connected to one side of the 3D puncture guide plate, and the inner wall of the sleeve is provided with a groove.

[0008] The sleeve is movably connected inside the sleeve, and a locking block is fixedly connected to the outer wall of the sleeve, and the locking block is adapted to the locking groove.

[0009] Preferably, the sleeve has an installation hole that is compatible with the sleeve.

[0010] Preferably, the sleeve is a concentric cylindrical structure with an outer diameter of 8mm and a length of 20mm, and the diameter of the mounting hole inside the sleeve is 6mm.

[0011] Preferably, the cannula is provided with a puncture channel through which the brain needle is inserted into the patient's body, and the puncture channel restricts the movement trajectory of the brain needle.

[0012] Preferably, the top of the sleeve is provided with a cylindrical cap, and the sleeve is made of transparent PVC material.

[0013] Preferably, the sleeve is a cylindrical tube with an outer diameter of 5.8 mm and a length of 20 mm, and the puncture channel inside the sleeve and the cap is a circular channel with a diameter of 4.2 mm.

[0014] Preferably, a connecting plate is fixedly connected to one side of the top of the cap, a sliding groove is provided in the middle of the connecting plate, and limit grooves are provided on both sides of the sliding groove. A scale is fixedly connected to one side of the surface of the connecting plate.

[0015] Preferably, a sliding rod is fixedly connected to the middle of the slide groove, and a movable ring is slidably connected to the surface of the sliding rod.

[0016] Preferably, both sides of one end of the movable ring are fixedly connected to limit blocks, the limit blocks are slidably connected inside the limit groove, one end of the movable ring is provided with a sliding hole, the sliding hole is slidably connected to the surface of the slide rod, and the other end of the movable ring is provided with a through hole, the diameter of the through hole being the same as the diameter of the puncture channel.

[0017] Preferably, a spring is fitted onto the surface of the slide rod, with one end of the spring abutting against one end of the slide groove and the other end of the spring abutting against the bottom end of the movable ring.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention, through the design of a slot and a locking block, ensures the stability of the cannula when it is installed inside the sleeve, preventing shaking that could affect the puncture effect, improving puncture accuracy, and reducing operation time. Furthermore, the connecting plate, with a movable ring slidably connected to one side and a scale on its surface, allows for direct observation of the puncture depth during the procedure, thereby enhancing the safety of the puncture surgery. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the 3D puncture guide plate structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the sleeve structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the connecting plate structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the movable ring structure of this utility model.

[0025] In the diagram: 1. 3D puncture guide plate; 2. Sleeve; 201. Mounting hole; 202. Slot; 3. Cap; 4. Sleeve; 401. Puncture channel; 402. Locking block; 5. Connecting plate; 501. Slide groove; 502. Limiting groove; 503. Scale; 6. Slide rod; 7. Spring; 8. Movable ring; 801. Limiting block; 802. Slide hole; 803. Through hole. Detailed Implementation

[0026] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0027] Example 1:

[0028] Please see Figures 1 to 5 This utility model provides a technical solution: a 3D-printed individualized navigation template for ventriculoperitoneal puncture surgery, including a 3D puncture guide plate 1, a sleeve 2 and a cannula 4;

[0029] The 3D puncture guide plate 1 is installed at the preoperative positioning point of the patient's surgical area skin. The sleeve 2 is fixedly connected to one side of the 3D puncture guide plate 1, and the inner wall of the sleeve 2 is provided with a groove 202.

[0030] The sleeve 4 is movably connected inside the sleeve 2, and a locking block 402 is fixedly connected to the outer wall of the sleeve 4, and the locking block 402 is adapted to the locking groove 202.

[0031] By setting the slot 202 and the locking block 402, when the cannula 4 is installed in the sleeve 2, the locking block 402 is locked into the slot 202, ensuring the stability of the cannula 4. This ensures stability when inserting the brain needle, avoids shaking that would affect the puncture effect, improves puncture accuracy, and reduces operation time.

[0032] Example 2:

[0033] like Figure 2 As shown, the 3D-printed personalized navigation template for ventricular puncture surgery disclosed in Embodiment 2 of this utility model has a structure that is basically the same as that in Embodiment 1, except that:

[0034] The sleeve 2 is provided with a mounting hole 201, and the mounting hole 201 is adapted to the sleeve 4.

[0035] The sleeve 2 is a concentric cylindrical structure with an outer diameter of 8mm and a length of 20mm. The diameter of the mounting hole 201 inside the sleeve 2 is 6mm.

[0036] The sleeve 2 facilitates the fixation of the cannula 4, thereby ensuring the stability of the brain puncture needle during the puncture operation.

[0037] Example 3:

[0038] like Figure 3 As shown, the 3D-printed personalized navigation template for ventricular puncture surgery disclosed in Embodiment 3 of this utility model has a structure that is basically the same as that in Embodiment 2, except that:

[0039] The cannula 4 is provided with a puncture channel 401, through which the brain needle is inserted into the patient's body, and the puncture channel 401 restricts the movement trajectory of the brain needle.

[0040] The top of the sleeve 4 is provided with a cap 3, and the sleeve 4 is made of transparent PVC material.

[0041] The sleeve 4 is a cylindrical tube with an outer diameter of 5.8 mm and a length of 20 mm. The puncture channel 401 inside the sleeve 4 and the cap 3 is a circular channel with a diameter of 4.2 mm.

[0042] When the cannula 4 and the cap 3 are installed into the sleeve 2, the bottom surface of the cap 3 is located on the top surface of the sleeve 2, so as to achieve the depth of the cannula 4 entering the sleeve 2. The cannula 4 is located in the installation hole 201 inside the sleeve 2. During the puncture operation, the brain puncture needle will pass through the puncture tube 401 inside the cap 3 into the patient's body.

[0043] Example 4:

[0044] like Figures 4 to 5 As shown, the 3D-printed personalized navigation template for ventricular puncture surgery disclosed in Embodiment 3 of this utility model has a structure that is basically the same as that in Embodiment 2, except that:

[0045] A connecting plate 5 is fixedly connected to one side of the top of the cap 3. A sliding groove 501 is provided in the middle of the connecting plate 5. Limiting grooves 502 are provided on both sides of the sliding groove 501. A scale 503 is fixedly connected to one side of the surface of the connecting plate 5.

[0046] A slide rod 6 is fixedly connected to the middle of the slide groove 501, and a movable ring 8 is slidably connected to the surface of the slide rod 6.

[0047] Both sides of one end of the movable ring 8 are fixedly connected to limit blocks 801. The limit blocks 801 are slidably connected inside the limit groove 502. One end of the movable ring 8 is provided with a sliding hole 802, which is slidably connected to the surface of the slide rod 6. The other end of the movable ring 8 is provided with a through hole 803, the diameter of which is the same as the diameter of the puncture channel 401.

[0048] A spring 7 is sleeved on the surface of the slide rod 6. One end of the spring 7 abuts against one end of the slide groove 501, and the other end of the spring 7 abuts against the bottom end of the movable ring 8.

[0049] With the connection plate 5 in place, a movable ring 8 is slidably connected to one side of the connection plate 5 during use, and a scale 503 is provided on the surface of the connection plate 5, so that the puncture depth can be directly observed during the puncture process, thereby improving the safety of the puncture surgery.

[0050] In use, the patient is first anesthetized and placed in a supine position. The surgery requires 0° and 30° rigid neuroendoscopy, conventional endoscopic surgical instruments, and a corresponding video and display system. A thin-slice CT scan of the head is performed, and the scan data is input into 3D Slicer medical image post-processing software to reconstruct the patient's facial contours and hematoma. A 3D printer prints a puncture guide. Under general anesthesia, the surgical puncture path is based on the printed 3D guide. The surgical incision is planned along the long axis of the hematoma, and a small craniotomy (approximately 3 cm in diameter) is performed. After opening the dura mater, the 3D puncture guide 1 is placed along the head contour. Another surgeon holds a rigid cannula endoscope (18 cm long, 4 mm in diameter, 0° and 30°) in their left hand for visual guidance. According to the exposure and removal requirements, it is inserted into the patient's body through the puncture channel 401. The movement of the endoscope and other surgical instruments is done manually. Once aspiration and removal of the hematoma are required, a tubular retractor is moved according to the location and shape of the hematoma cavity. Care is taken to avoid damaging the brain parenchyma when operating within the hematoma. If the hematoma ruptures into the lateral ventricle, exploration of the ventricle is necessary. Simultaneously, the intraventricular hematoma can be removed during this stage. Hemostasis can be achieved through bipolar electrocoagulation, hemostatic agents, and cotton pad compression, performed according to microsurgical standards. The tubular retractor should then be removed, and the compressed brain surface should be examined endoscopically. Finally, after achieving definitive hemostasis and completing the examination, the dura mater should be closed.

[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0052] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A 3D-printed personalized navigation template for ventricular puncture surgery, characterized in that, Includes a 3D puncture guide plate (1), a sleeve (2) and a cannula (4); The 3D puncture guide plate (1) is installed at the preoperative positioning point of the skin in the surgical area of ​​the patient. The sleeve (2) is fixedly connected to one side of the 3D puncture guide plate (1). The inner wall of the sleeve (2) is provided with a slot (202). The sleeve (4) is movably connected inside the sleeve (2), and a locking block (402) is fixedly connected to the outer wall of the sleeve (4), and the locking block (402) is adapted to the locking groove (202); The sleeve (2) is provided with a mounting hole (201), and the mounting hole (201) is adapted to the sleeve (4); The sleeve (2) is a concentric cylindrical structure with an outer diameter of 8 mm and a length of 20 mm. The diameter of the mounting hole (201) inside the sleeve (2) is 6 mm. The cannula (4) is provided with a puncture channel (401), through which the brain needle is inserted into the patient's body, and the puncture channel (401) restricts the movement trajectory of the brain needle. The top of the sleeve (4) is provided with a cap (3), and the sleeve (4) is made of transparent PVC material; The sleeve (4) is a cylindrical tube with an outer diameter of 5.8 mm and a length of 20 mm. The puncture channel (401) inside the sleeve (4) and the cap (3) is a circular channel with a diameter of 4.2 mm. A connecting plate (5) is fixedly connected to one side of the top of the cap (3). A sliding groove (501) is provided in the middle of the connecting plate (5). Limiting grooves (502) are provided on both sides of the sliding groove (501). A scale (503) is fixedly connected to one side of the surface of the connecting plate (5).

2. The 3D-printed personalized navigation template for ventricular puncture surgery according to claim 1, characterized in that, A slide rod (6) is fixedly connected to the middle of the slide groove (501), and a movable ring (8) is slidably connected to the surface of the slide rod (6).

3. The 3D-printed personalized navigation template for ventricular puncture surgery according to claim 2, characterized in that, Both sides of one end of the movable ring (8) are fixedly connected to limit blocks (801). The limit blocks (801) are slidably connected inside the limit groove (502). One end of the movable ring (8) is provided with a sliding hole (802). The sliding hole (802) is slidably connected to the surface of the slide rod (6). The other end of the movable ring (8) is provided with a through hole (803). The diameter of the through hole (803) is the same as the diameter of the puncture channel (401).

4. The 3D-printed personalized navigation template for ventricular puncture surgery according to claim 3, characterized in that, A spring (7) is fitted onto the surface of the slide rod (6). One end of the spring (7) abuts against one end of the slide groove (501), and the other end of the spring (7) abuts against the bottom end of the movable ring (8).

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