Neuro drill template trainer system

Abstract

System comprising a neurodrill template trainer for limiting drilling on flat bones during a training of a drilling procedure in neurosurgery under a microscope and the microscope, wherein the neurodrill template trainer has the following features: a flat stencil which also has the following features: a flat base (5), four outer circles (1) in an outer region to provide reference marks for evaluating the activity performed and recorded using a microscope output on a computer, four inner circles (2) in an inner region to specify a position for drilling holes in the flat bone, four slots (3) in the outer region to define a restricted region for the drilling operation, and a handle (4) placed on the central region to hold the template firmly in a fixed position, the slots (3) being rectangular in shape, measuring 24 x 2 mm, wherein the template is made of rubber, such as polymer, to provide a boundary for drill holes for drilling, whereby the handle (4, 10) has a flat base design for flat bones so that proper contact on the surface of the bone can be achieved, the microscope being designed to record the training of a drilling operation using the neuro drill template trainer in order to use an effectiveness of the activity performed for offline analysis.

Description

Field of the invention

[0001] The present invention relates to a neurodrill template trainer system for training a drilling procedure in neurosurgery, and more particularly for providing a constraint on flat and curved bones to evaluate the performance of the procedure. Background and prior art of the invention

[0002] Neurosurgery is the newest surgical specialty, requiring effective training and education to develop precise skills. Drilling is an important task performed to access the deeper structures of the brain by removing the bone flaps of the outer skull. During various surgical procedures, drilling is also performed on internal bones and is usually performed under magnification. Neurosurgical drilling tools have evolved significantly from hand-operated drills to high-speed electric / pneumatic drills. These high-speed drills should be operated with high precision and control. Any error in operating the drill can lead to devastating consequences, as they are forced against the surface at rates of hundreds of thousands of revolutions per minute.Therefore, effective training is required to prevent drill bits from slipping and tearing the meninges and to protect critical structures from damage.

[0003] Standard drilling practice is performed with the naked eye on flat and curved bones, and advanced training is conducted under a microscope with defined magnification. A defined workstation for performing the drilling task is essential for precise training in neurosurgery. Therefore, training requires operation in a narrow and restricted area to limit hand and tool movements. There is no standard procedure for marking and evaluation for drilling in neurosurgery.

[0004] US 5954687 A provides a burr hole ring with catheter for use as an injection port, relates to a burr hole ring with a catheter for use as an injection port, and comprises a modified burr hole ring adapted to engage the skull at a burr hole drilled therein. The interior of the burr hole ring defines a fluid reservoir accessible by a needle or stylet inserted through a septum positioned over the top of the burr hole ring. The reservoir is in fluid communication with the central lumen of a catheter. The assembly comprises a fluid flow path suitable for transferring fluids to or from a selected location on, near, or in the brain. A filter layer may be provided to prevent contamination of the drug infusion site.

[0005] US 20100041004 A1 provided a surgical burr drilling simulator relating to a system, method, and apparatus for simulating a medical procedure, including a haptic mechanism controllable to provide feedback to a user operating a medical device. In one embodiment, a pair of three-degree-of-freedom haptic devices are coupled to provide six-degree-of-freedom measurements and force / torque feedback to the user. The six-degree-of-freedom haptic device may be configured to provide different resolutions for different degrees of freedom depending on simulation requirements. In one embodiment, a load cell is used to provide higher resolution to an extent determined to be more critical for realistic simulation.

[0006] US 6328565 B1 disclosed a training method and device for dental drill identification, which relates to a drill block adapted for identifying and training dental personnel and utilizes a block and a cover. The block has a surface with a number of holes sized to hold a number of dental drills. Each hole has indicia representing characteristics of the drill disposed in the hole. The characteristics include drill sizes and shapes, colors, grits, part numbers, and the like. By placing the characteristics of each drill near the drill itself, individuals can readily learn and / or become accustomed to the drill characteristics, making drill identification easier in the future.

[0007] US 4821716 A discloses drilling an opening into the skull, and relates to an apparatus and method for drilling a hole in a human skull at an angle of substantially 90° to a plane defined by a tangent to the surface of the skull at the opening. The apparatus comprises a first tubular guide for directing a drill at the proper angle, the first guide being supported on the skull by a plurality of leg members. The invention further comprises a hand-operated rotary drill device adapted for insertion into the tubular guide. A second guide of reduced diameter relative to the first tubular guide is insertable into the first guide upon completion of the drill hole to allow entry of a catheter into the ventricular portion of the patient's brain.The method of the invention comprises positioning the first drill guide on the patient's skull, inserting the rotary drill into it to prepare a drill hole extending at an angle of substantially 90° to a plane tangential to the surface, replacing the drill with a catheter guide insertable into the drill guide, and inserting a catheter through the second guide through the drill hole and into a ventricular portion of the patient's brain.

[0008] US 5,578,036 A discloses a substantially circular template used in neurosurgical procedures. US 7,827,701 B2 discloses a triangular and a circular template used in neurosurgical procedures. US 2012 / 0 289 964 A1 discloses a device for use in neurosurgical procedures.

[0009] However, the current state of the art shows that trainers for surgical high-speed drilling under the microscope are lacking.

[0010] Thus, the present invention provides novel templates for providing a closed, confined environment for practicing drill training under a neurosurgical microscope. Said template is provided with markings for drill holes in a defined, confined area and with different template angles to accommodate the surface of flat and curved bones. Object of the invention

[0011] An object of the present invention is to provide a simple template for accurately defining the restricted region of the drilling operation.

[0012] Another object of the present invention is to assist in the evaluation of the effectiveness of the drilling process.

[0013] Yet another object of the present invention is to provide a stencil that is easily applicable to both flat and curved surfaces. Brief description of the invention

[0014] According to this present invention, a system comprising a neurodrill template trainer for limiting drilling on flat bones in a recorded training of a drilling procedure in neurosurgery under a microscope and the microscope is provided.The neurodrill template trainer for limiting drilling on flat bones comprises: a flat template further comprising: a flat base (5), four outer circles (1) in an outer region to provide reference marks for evaluating the performed and recorded activity using a microscope output on a computer, four inner circles (2) in an inner region to specify a position to make drill holes on the flat bone, four slots (3) in the outer region to define a restricted region for the drilling operation in which the drilling operation is to be performed, and a handle (4) placed on the central region to firmly hold the template in a fixed position, the slots (3) being rectangular in shape with a size of 24x2 mm. the template is made of rubber, such as polymer, for providing a boundary of drill holes for drilling, wherein the handle (4, 10) has a flat-base construction for flat bones so that proper contact on the surface of the bone can be achieved, wherein the microscope is configured to record the training of a drilling operation using the neurodrill template trainer in order to use an effectiveness of the performed activity for offline analysis.

[0015] Furthermore, a system comprising a neurodrill template trainer for limiting drilling on curved bones during a recorded training of a drilling procedure in neurosurgery under a microscope and the microscope is provided.

[0016] The neurodrill template trainer for limiting drilling on curved bones comprises: a curved template further comprising: a curved base (6), four outer circles (7) in an outer region to provide reference marks for evaluating the performed and recorded activity using a microscope output on a computer, four inner circles (8) in an inner region to specify a position to make drill holes on the curved bone, four slots (9) in the outer region to define a restricted region for the drilling operation in which the drilling operation is to be performed, and a handle (10) placed on the central region to firmly hold the template in a fixed position, wherein the slots (3) are rectangular in shape, with a size of 24x2 mm, wherein the template is made of rubber, such as polymer, for providing a boundary of drill holes for drilling, wherein the handle (4, 10) has a curved base structure for curved bones so that proper contact on the surface of the bone can be achieved, wherein the microscope is designed to record the training of a drilling process using the neurodrill template trainer in order to use an effectiveness of the performed activity for offline analysis

[0017] According to further embodiments, the outer region further comprises four holes (1) of 3 mm diameter at the four corners to provide reference marks for evaluating the activity performed; - the inner region further comprises four holes (2), each having a diameter of 2.5 mm, which specify the position for making drill holes.

[0018] Further described is a method of drilling with the neurodrill template trainer using the systems described herein. The method comprises the following steps: drilling holes on the inner four markers by performing circular and semicircular movements of the drill bit and creating rectangular slots between these drill holes starting in the directions from top left to top right, top right to bottom right, bottom right to bottom left, and bottom left to top left; - drilling is carried out in the diagonal direction starting with the mark from top left to bottom right and followed from top left to top right; - the drilling procedure with the neurodrill template trainer is recorded using a microscope and subjected to offline analysis. Brief description of the invention

[0019] According to this invention, a template is provided for defining flat and curved bones for microscopic training during drilling in neurosurgery. The template is formed with an outer region consisting of four circles and four grooves for marking the square region within which drilling is to be performed. It also has an inner region consisting of four circles used to mark the points to indicate the drill hole positions. A handle is provided to hold the template in a fixed position with respect to the bone during marking. It has a flat-base configuration for flat bones and a curved-base configuration (convex-concave) for curved bones to ensure proper contact with the bone surface. Brief description of the enclosed drawings Fig. 1 is an isometric view of the flat template Fig. 2 is the top view of the flat template Fig. 3 is the isometric view of the curved template Fig. 4 is the top view of the curved template Detailed description of the enclosed drawings

[0020] The present invention relates to microscopic high-speed drill training for neurosurgical procedures. One aspect of the invention is to provide rubber scrapers for defining drill holes for drilling with Brand X diamond-adjustable and cutting-adjustable drill bits on curved and flat bones. Another aspect of the invention is to provide a restricted operating area for trainees to practice precise, straight, and controlled drill bit movements under microscopic magnification.

[0021] Embodiments consist of a limited outer region for evaluating the performed activity. The activity is limited to this region and consists of marking four drill holes, four border lines, and two diagonal lines. Another aspect of the invention is to record the performed activity on a computer using a microscope output of the brand Y. These recordings can be used for offline analysis of the effectiveness of the performed activity.

[0022] Fig. 1 shows the isometric view of the flat template made of rubber, such as polymer, with a flat base 5, outer circles 1, inner circles 2, slots 3 and handle 4. Fig. Figure 2 shows the top view of the flat template with an outer region containing four rectangular slots 3 measuring 24x2 mm to define a restricted region where the drilling operation is to be performed, and four 3 mm diameter holes 1 at the four corners to provide reference marks for evaluating the performed activity. The inner region of the template consists of four 2.5 mm diameter holes 2 to specify the position for drilling holes on the curved and flat bones. A handle 4 is placed on the central region to hold the template firmly during marking. Fig. Figure 3 shows the isometric view of the template, which is curved at 10 degrees to match the curvature of the curved bones. Similarly, Fig. 4 the top view of the curved template shown with curved base 6, outer circles 7, inner circles 8, slots 9 and handle 10.

[0023] The drilling process is divided into three activities: drilling hole activity, border line activity, and diagonal line activity. The adjustment head cutting drill bit is used for coarse drilling at a lower resolution (4.25X), and the adjustment head diamond drill bit is used for fine drilling at a higher magnification (7.08X) of the operating microscope. The process begins with making drill holes at the inner four marks by performing circular and semicircular movements of the drill bit. Then, rectangular slits are made between these drill holes, starting in directions from top left to top right, top right to bottom right, top right to bottom left, and bottom left to top left. Then drilling is performed in the diagonal direction starting from the mark from top left to top right and followed by bottom left to top right.

Claims

[1] A system comprising a neurodrill template trainer for limiting drilling on flat bones during a recorded training of a drilling procedure in neurosurgery under a microscope and the microscope, the neurodrill template trainer having the following features: a flat template which further has the following features: a flat base (5), four outer circles (1) in an outer region to provide reference marks for an evaluation of the performed and recorded activity using a microscope output on a computer, four inner circles (2) in an inner region to specify a position to make drill holes on the flat bone, four slots (3) in the outer region to define a restricted region for the drilling operation in which the drilling operation is to be carried out, and a handle (4) placed on the central region to hold the template firmly in a fixed position, wherein the slots (3) are rectangular in shape, with a size of 24x2 mm, wherein the template is made of rubber, such as polymer, for providing a boundary of boreholes for drilling, wherein the handle (4, 10) has a flat base structure for flat bones so that proper contact on the surface of the bone can be achieved, wherein the microscope is adapted to record the training of a drilling operation using the neurodrill template trainer in order to use an effectiveness of the performed activity for offline analysis. [2] A system comprising a neurodrill template trainer for limiting drilling on curved bones during a recorded training of a drilling procedure in neurosurgery under a microscope and the microscope, wherein the neurodrill template trainer has the following features: a curved template which further has the following features: a curved base (6), four outer circles (7) in an outer region to provide reference marks for an evaluation of the performed and recorded activity using a microscope output on a computer, four inner circles (8) in an inner region to specify a position to make drill holes on the curved bone, four slots (9) in the outer region to define a restricted region for the drilling operation in which the drilling operation is to be carried out, and a handle (10) placed on the central region to hold the template firmly in a fixed position, wherein the slots (3) are rectangular in shape, with a size of 24x2 mm, wherein the template is made of rubber, such as polymer, for providing a boundary of boreholes for drilling, wherein the handle (4, 10) has a curved base structure for curved bones so that proper contact on the surface of the bone can be achieved, wherein the microscope is adapted to record the training of a drilling operation using the neurodrill template trainer in order to use an effectiveness of the performed activity for offline analysis. [3] The neurodrill template trainer according to claim 1 or 2, wherein the outer region further comprises four 3 mm diameter holes (1) at the four corners to provide reference marks for evaluation of the activity performed. [4] The neurodrill template trainer according to claim 1 or 2, wherein the inner region further comprises four holes (2) each having a diameter of 2.5 mm, which specify the position for making drill holes. [5] A method of drilling with a neurodrill template trainer according to claim 1 or 2, comprising the steps of: making drill holes on the inner four marks by performing circular and semicircular movements of the drill bit, making the rectangular slits between the drill holes starting in directions from top left to top right, top right to bottom right, bottom right to bottom left and bottom left to top left and recording the process using a microscope and then performing an offline analysis. [6] A method according to claim 5, wherein drilling is carried out in the diagonal direction starting with the marking from top left to bottom right and followed from top left to top right.

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