RU219922U1 - Folding Portable Mobile Laparoscopic Trainer - Google Patents

Abstract

The utility model relates to teaching aids in medicine. The model is a compact, mobile box that simulates the abdominal cavity, made of dense opaque acrylic. The claimed model can be used by medical students and practicing surgeons to improve the skills of laparoscopic surgery. The design of the box consists of 5 panels fastened together with loops that provide a movable connection. The movable connection of the panels allows you to fold and unfold the simulator in a few seconds. When folded, the simulator takes up much less space, suitable for daily transportation. When unfolded, the space inside the box has the dimensions of the abdominal cavity. Each panel has several simulated trocar openings to provide the greatest possible number of variations in laparoscopic access. The technical result of the claimed utility model is mobility, the possibility of compact folding, which are achieved due to the special design of the box, which is a collection of individual panels interconnected by movable hinged joints: cylindrical movable joints (hinges), or movable spherical joints, or movable cardan-type joints .

Description

Technical field

The utility model relates to the field of medicine, namely to medical models for training in surgery. Can be used by medical students and practicing surgeons to practice manual skills in laparoscopic surgery.

State of the art

Description of analogues

As a result of a patent search for analogues of the claimed useful model, the following devices were found:

1. Simulator for teaching the skills of working with laparoscopic instruments (Patent No. RU68163U8).

Hereinafter referred to as MODEL No. 1

The essence of model No. 1 is the design of a laparoscopic simulator containing a cavity with holes, characterized in that the simulator contains two side and one upper planes made of transparent material, interconnected in the form of a table. At the same time, the upper plane is provided with at least two holes, as well as two mirrors fixed opposite each other along its free sides in such a way that the reflection of the working field is obtained in the mirror fixed perpendicular to the upper plane, and in the opposite mirror fixed with the possibility of changing its position within 10-15 °, a re-reflection of the working field was obtained.

The case of this model is represented by 3 planes, which are connected to each other "in the form of a table" monolithically.

The disadvantages of this model are the bulkiness of the case, the lack of compact folding and, as a result, the lack of mobility and portability.

2. Training platform for practicing laparoscopic and open surgical manual skills (Patent No. RU164785U1).

Hereinafter referred to as MODEL No. 2

The essence of model No. 2 is a design consisting of a rectangular base and a removable prefabricated body, which consists of walls and a top cover for placing an endoscopic instrument and a video camera. Characterized in that the base contains grooves and holes for: installing trays for practicing manual skills of open surgery, one tray is designed to work with artificial materials, and the second tray is for working with biological materials; installation of the housing for practicing laparoscopic skills, while the top cover has holes in which rubber inserts are placed for working with an endoscopic instrument and a video camera, which ensure the fixation of the instrument and camera due to the friction force between the rubber insert and the tube of the endoscopic instrument.

Based on the description of model No. 2, the top cover of this laparoscopic simulator is monolithic and does not have the possibility of compact folding.

The dimensions of model No. 2 are 311×490×199 mm, which significantly exceeds the dimensions of the claimed laparoscopic simulator.

The disadvantages of this model No. 2 is the bulkiness of the case.

The lack of the possibility of compact folding and, as a result, the lack of mobility, portability.

3. A device for training surgeons in the techniques of endovideosurgical interventions (Patent No. RU2718764C1).

Hereinafter referred to as MODEL No. 3

The essence of this model No. 3 is as follows.

A device for training surgeons in the techniques of endovideosurgical interventions, containing a transparent sealed protective housing and a housing cover, characterized in that the cover is equipped with a sealed silicone gasket, in which sealed removable ports are installed for placing endovideosurgical equipment and instruments. TO

The housing contains a double bottom with the formation of a container for the solution. It has a simulated physiological insert with fixators for implanting anatomical objects in the form of a complex of embalmed organs, extracted without violating integrity.

The disadvantages of this model is the bulkiness of the case, the solidity of the structure. The lack of the possibility of compact folding and, as a result, the lack of mobility, portability.

Prototype selection

As a result of the analysis of patent search data, MODEL No. 1 was identified, which is the closest analogue of the claimed model. The case of MODEL No. 1 is represented by three planes, which are connected to each other "in the form of a table" monolithically.

The disadvantages of this model are the bulkiness of the case, the lack of compact folding and, as a result, the lack of mobility and portability. The proposed model contains movable articulated joints, allowing the structure to be folded, mobile, and easy to transport.

Disclosure of a technical problem

All proposed analogues (including MODEL No. 1) have bulky cases. As part of the housing there are no movable swivel joints, which in turn deprives them of the possibility of compact folding, making them stationary. As a result, mobility and compactness are lost.

Disclosure of the essence of the utility model

The technical result of the claimed utility model is mobility, the possibility of compact folding, which are achieved due to the special design of the box, which is a set of individual panels connected to each other by movable hinged joints: cylindrical movable joints or movable spherical joints or movable cardan-type joints.

Brief description of the drawings

Figure 1 - Laparoscopic simulator in the unfolded form

Figure 2 - Laparoscopic simulator in assembled form

Figure 3 - Structural elements of the laparoscopic simulator:

No. 1 - Bottom panel

No. 2 - Top panel

#3 - Sidebar

No. 4 - Stand for video recording device

No. 5 - Front panel

No. 6 - Soft spacer

No. 7 - Overlay Cheburashka

No. 8 - Arrow retainer

No. 9 - Movable swivel (loop, hinge or cardan)

No. 10 - Round spacer

No. 11 - Leg

Figure 4 - Backlash Eliminator

Figure 5 - An example of a real practical application, illustrating the process of training laparoscopic skills in students, residents, surgeons.

Figure 6 - Visual demonstration of the small dimensions of the laparoscopic simulator in the folded state in comparison with the printed edition of the format 70×100/8 for 700 pages.

Implementation of the utility model

Detailed description of the structure.

The design feature of this useful invention lies in the movable connection of the panels by means of plastic hinges (figure 3, 9), which allows you to quickly (4 seconds) fold and unfold the simulator. Dimensions when folded 350×240×35 mm (figure 2), which is comparable to the size of an average medical textbook.

Dimensions in the unfolded state 280×240×200 mm (figure 1).

The emerging backlash in the design with a movable connection is leveled by the backlash liquidators (figure 4). The backlash eliminators consist of a latch arrow (fig. 3, 8) connected through a round spacer (fig. 3, 10) to the bottom panel (fig. 3, 1) by means of a bolt fixed with a nut.

The laparoscopic simulator consists of 5 panels interconnected by movable articulated joints. The panels are equipped with seven simulated trocar holes for insertion of laparoscopic instruments.

Laparoscopic simulator has 4 legs (figure 3, 11).

Imitation of the trocar hole consists of a soft lining (figure 1, 6) tightly pressed overlay Cheburashka (figure 3, 7) to the panel of the laparoscopic simulator with two M4 bolts.

Soft lining (figure 3, 6) is a piece of vegetable-tanned leather cut in the shape of a circle, with a hole for a laparoscopic instrument 5 mm. Vegetable tanned leather mimics human skin as closely as possible. When wet and then dried, it has a memory effect. This allows the hole to conform to the shape of the laparoscopic instrument. This feature minimizes friction, making the training process more comfortable. The laparoscopic instrument insertion port can be enlarged to allow the use of larger diameter instruments.

The bottom panel (figure 3, 1) has a size of 280×240×4 mm. There are holes in the corners for fixing the plastic legs. On the sides there are rectangular slots for connection with the side panels (figure 3, 3) laparoscopic simulator type "thorn in the groove". Medially from both rectangular slots there are holes for fastening backlash liquidators. The backlash liquidators (figure 4) are arrows rising above the level of the bottom panel by 4 mm, freely rotating around their axis. The protruding part of the arrow when turning enters the groove of the left and right side panels, tightly pressing them to the bottom panel (figure 3, 1), giving rigidity to the structure. In the center of the bottom panel there is a matrix of 39 holes with a diameter of 4 mm, which is used for fixing silicone imitations of internal organs and other operating scenarios.

Side panels (figure 3, 3) (right and left) have a size of 180×75×4 mm. In the upper part they have 2 holes with a diameter of 4 mm for attaching a loop that fixes the side panel to the top panel. On the outer surface there is an imitation of a trocar hole. On the bottom of the side panel there is a spike for connecting with the bottom panel in a tongue-and-groove manner. The side panel connects to the bottom panel at an angle of 36 degrees. At the bottom of the side panel there is a groove 4 mm high for fixing the latter with a backlash eliminater.

The top panel (figure 3, 2) has dimensions of 240×220×4 mm. In the center there is a hole for installing a video receiving device. As a video receiving device can be used: smartphone, tablet, webcam, endoscope. Below the hole for video reception there are two rectangular holes for connection with a stand for a video recording device (Fig.3, 4) according to the "thorn-in-groove" type. On the outer surface of the top panel there are two imitation trocar holes.

The front panel (figure 3, 5) has dimensions of 240×100×4 mm. On the outer surface there are three imitation trocar holes. In the upper part of the front panel there are 4 holes with a diameter of 4 mm for connecting the front panel with the top panel by means of two PVC loops (Fig.3, 9). On the lower part of the front panel are similarly located 4 holes for connection with the bottom panel through PVC loops (figure 3, 9).

When folded (Fig.2) L×W×H 350×240×35mm = 2940cm ³

In the unfolded (Fig.1) L × W × H 280 × 240 × 200 cm = 13440 cm ³

Possible execution options

As movable swivel joints, connecting disparate panels into a single body, the following can be used:

cylindrical swivel joints (loops)

ball joints (hinge)

cardan-type swivel joints (cardan)

The panels included in the body of the laparoscopic simulator can be made of any dense sheet material (acrylic, polystyrene, plywood, chipboard, metal, and others).

Variations of folding the body can be varied.

Description of the device

The laparoscopic simulator unfolds. The side panels are inserted into the grooves of the bottom panel and fixed with backlash liquidators. On the matrix of the lower panel there is a silicone imitation of internal organs or an animal organ complex. A video recording device is installed.

A smartphone, tablet, laparoscope, webcam can be used as a video recording device.

The instruments are inserted into the simulated trocar holes.

The surgical scenario is being developed.

Specific Implementation Examples

The claimed utility model can be used to practice surgical skills in medical students, residents, surgeons. On the basis of the Department of General, Reconstructive and Plastic Surgery of the GBU RO GK BSMP of the City of Ryazan, residents are captured in the process of working on a laparoscopic simulator (figure 5).

A smartphone is used as a video recording device, broadcasting a video signal to a laptop monitor.

Rationale for achieving the technical result.

Unlike expensive stationary simulators for general use, which require a special simulation center, where the time for training can be limited by the queue of students and (or) the lack of round-the-clock access to the simulator, a personal simulator can be located at the student's home. Can be used around the clock with no time limit for training. Mobility and ease of transportation, achieved by the small size of the simulator when folded, due to the presence of movable articulated joints in the body, allow you to take the simulator with you on trips and business trips. Which, in turn, increases the frequency of training and, as a result, the skill of the student.

Theoretical justifications and test results.

Compact and easy to transport due to:

compact folding capability

small dimensions of the laparoscopic simulator when folded

The possibility of compact folding is achieved by the presence of movable joints connecting the panels of the laparoscopic simulator (figure 1 and figure 2).

The size of the laparoscopic simulator in the folded state is 350×240×35mm, which is comparable to the size of a book edition of the format (Fig.6) 70×100/8 according to GOST ROSSTANDART (GOST 5773-90)

Link to the standard:

https://www.rst.gov.ru/portal/gost/home/standards/cataloginter? portal:componentId=26cba537-adcd-44ed-9a44-72c63a7c7bc2&portal:isSecure= false&portal:portletMode=view&navigationalstate= JBPNS_rO0ABXc6AAZhY3Rpb24AAAABABBjb25jcm V0ZURvY3VtZW50AAZkb2NfaWQAAAABAAU yMDE2MwAHX19FT0ZfXw**

Name Dimensions L×W×H, cm Occupied volume, cm ³ The declared model in the unfolded state 28×24×20 13440 Claimed folded model 35×24×3.5 2940 Print edition format
70×100/8 for 700 pages
(GOST 5773-90) 34×26.5×5 4505

Claims (4)

1. A laparoscopic simulator, including a body simulating the abdominal cavity, containing trocar holes for introducing laparoscopic instruments and a hole for attaching a video capture device, characterized in that the body consists of top, bottom, front and side panels interconnected by hinged joints with the possibility of folding for further transportation and storage, while imitation of trocar holes consist of a soft lining, pressed to the panel with an overlay and representing a section of tanned skin in the form of a circle with a hole for a laparoscopic instrument, holes for fixing the legs are located at the corners of the bottom panel, and in the center - a matrix holes for fixing imitations of internal organs, in the center of the top panel there is a hole for installing a video capture device, and on the front panel there are imitations of trocar holes. 2. Laparoscopic simulator according to claim 1, characterized in that the swivel is a cylindrical hinge. 3. Laparoscopic simulator according to claim 1, characterized in that the swivel is a spherical joint. 4. Laparoscopic simulator according to claim 1, characterized in that the articulated joint is a cardan joint.