FORM 2
THE PATENTS ACT 1970
(39 OF 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See SECTION 10, RULE 13)
1. TITLE OF THE INVENTION:
" SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION "
2. APPLICANTS
NAME: KRISHNA INSTITUTE OF MEDICAL SCIENCES
NATIONALITY: DEEMED TO BE UNIVERSITY DECLARED U/s 3
OF UGC ACT, 1956 VIDE NOTOFICATION NO. F.9-15/2001-U-3 OF THE MINISTRY OF HUMAN RESOURCE DEVELOPMENT, GOVT. OF INDIA
ADDRESS: KRISHNA INSTITUTE OF MEDICAL SCIENCES,
NEAR DHEBEWADI ROAD, MALKARPUR, KARAD
MAHARASHTRA, INDIA
3. PREAMBLE TO THE DESCRIPTION
PROVISIONAL
N/A
COMPLETE
The following Specification particularly describes the nature of this invention and the manner in which it is to be performed:
4. TECHNICAL FIELD
The present invention relates to the field of Medical Sciences as a training tool for assessment of cervical dilatation for (i) undergraduate and postgraduate students form Obstetrics & Gynecology (ii) Nursing students and professionals, (iii) Traditional birth attendants.
5. BACKGROUND
At present assessment of cervical dilatation is done by a teacher in obstetrics and gynecology and then the student is asked to do internal examination of the woman and told size of cervix which the student has to remember and fix in his mind as a particular size of cervix either in fingers or in cms.
When series of students palpate internally there is risk of infection to the patient due to repeated internal examinations apart from psychological trauma and physical botheration of getting examined vaginally.
This training is transferring subjective impression of one person to another person without facilitating visual guidance about actual size of the cervix.
Each and every student of medicine and nursing has to undergo such training without facilities for forming their judgment on a dummy model. Such training is far from perfect and is likely to result in lacunae in training and the trained person is likely to have inaccurate judgment of size of the cervix.
6. SUMMARY
A novel innovative device is made available for training in obstetrics and gynecology for judgment of size of cervical dilatation from 3cms to l0cms on an inanimate object before embarking on vaginal examination forjudging cervical dilatation in a live subject.
Hence this simulation training device for the assessment of the cervical dilatation was designed so that one can practice and perfect oneself in judging the size of hole accurately before actually performing internal vaginal examination for assessing size of cervix in a live subject.
1 Rubber Rings from 3cms to l0cms are fitted on corresponding sized holes
on the rotating drum. The handle attached to it can be put at desired cervical size to get that size on the drum which can be palpated by fingers inserted from the round opening kept on the front side of the rectangular box of the device. Once one is accustomed to the size of the opening visually and by palpation, the opaque piece of cloth of the device can be made to block the vision of the person learning to judge the size of the opening by palpation thus simulating vaginal examination where one has to judge the size of cervix without advantage of visually seeing it.
The device has a block board platform (10) for supporting the parts of the machine. The device has a rotating plastic drum or cylinder (6) which has eight holes from 3 cm to 10 cm diameter on which rubber rings are fitted (8). The cylinder is closed on both sides by plastic discs which are glued to the cylinder, which in turn are connected to the shaft (12) through one wooded hub (15) on each side. The hub is screwed to the disc and to the shaft. Thus the cylinder is rigidly connected to the shaft.
The cylinder is covered by the box (1) to ensure that the holes on the cylinder can't be seen from outside and also to protect the inner parts. The front side of the box (1) has an opening (5) which is covered by the curtain (13).
The shaft is mounted in two wooden bearings (14) which are fixed on the block board platform (10) through support for the bearings (11) on both the sides. The indexing mechanism is on the right hand side. This mechanism consists of spring loaded lock (9) and slotted indexing wheel (2). The slotted indexing wheel is fixed to the shaft by means of a screw. The indexing allows the drum to rotate in one direction only. The direction is marked on the turn wheel (16). By rotating indexing wheel (2), rubber ring fitted holes (8) can be brought in the center of the opening (5) on the box (1) one at a time. The axial central position of the holes is ensured by the suitable spacers (7). The indexing mechanism synchronizes the hole size with the number indicated by the indicator arrow on the circular scale (3). By rotating the turn wheel the holes on the cylinder come one by one in line with the opening (5) on the box (1).
The shaft extends out of the box (1) from the right hand side. The turn wheel (16) is mounted on the shaft on the outside of the box (1). This has a handle (4) for rotation. It also has a indicator arrow and a direction arrow showing direction of rotation. A circular scale (3) is printed on the box just below the turn wheel. The turn wheel (16), the cylinder (6) and the indexing mechanism are so synchronized that the diameter of the hole on the cylinder (6) in front of the opening on the box is correctly shown by the indicator arrow on the turn wheel. The trainee student has to learn judging the diameter of the hole by sensing the hole diameter only with the touch and correlating with corresponding number indicated by the arrow.
The hole on the box is covered with the curtain. This facilitates selective viewing of the holes and palpating it at the same time. After this, blind palpitation can be undertaken for each of the holes by the trainee student. After gaining confidence of his judgment of the side of the hole by way of repeated blind palpitations on the machine, he is now ready for learning on the live subjects.
To teach the cervical dilatation, following steps are to be undertaken
1. With the rotating handle the size of opening is to be fixed.
2. The student is given a view of rubber ring fitted circular opening of desired diameter.
3. The student is made to palpate it many times till it is fixed in his memory.
4. The ability of the student is judged by blinding him/her by putting opaque curtain and making him identify the size of the opening from 3cms diameter to lOcms diameter.
5. Once the student is trained to identify the size of the opening correctly, he/she is allowed to do vaginal examination and judge the size of cervical opening in live subjects.
These steps will facilitate the student to learn size of the cervix accurately by palpatory method.
Applications/ uses:
(i) Simulates vaginal examination.
(ii) Saves repeated learning attempts at judging the size on live subjects.
(iii) Readily available, can be manipulated to fix known desired size of opening on the model.
Repeated examinations on model are possible without any harm of infection
or trauma to a live subject.
7. BRIEF DESCRIPTION OF DRAWINGS:
Fig. No. 1 is the schematic representation of the SIMULATION TRAINING
DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION showing the two wooden hubs (15) and slotted indexing wheel (2).
Fig. No. 2 is the schematic representation of the SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION and consists of the rotating plastic drum or cylinder (6), support houses the spring loaded lock (9) of the indexing mechanism, a block board platform
(10) , the shaft (12), two wooden bearings (14), two supports for the bearing
(11) and suitable spacer (7).
Fig. No. 3 is the schematic representation of the SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION and consists of the handle (4) for rotation.
Fig. No. 4 is the schematic representation of the SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION and consists of the box (1), an opening in the box (5), which is covered by the curtain (13), the turn wheel (16) and rubber rings fitted hole (8).
Fig. No. 5 is the schematic representation of the SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION and
consists of the circular scale (3).
8. DESCRIPTION OF DRAWINGS
Fig. No. 1 shows the two wooden hubs (15) and slotted indexing wheel (2). The two wooden hubs are connected to the shaft through one wooden hub (15) on each side. The slotted indexing wheel (2) is fixed to the shaft by means of the screw. The indexing allows the drum to rotate in one direction.
Fig. No. 2 shows the rotating plastic drum or cylinder (6), spring loaded lock (9), a block board platform (10), the shaft (12), two wooden bearings (14) and suitable spacer (7). The machine has a rotating plastic drum or cylinder (6). The cylinder (6) is closed on both sides by plastic discs which are glued to the cylinder, which in turn are connected to the shaft (12) through one wooden hub (15) on each side. The hub (15) is screwed to the disc and to the shaft. Thus the cylinder (6) is rigidly connected to the shaft (12). The shaft
(12) is mounted in two wooden bearings (14) which are fixed on the block board platform (10) through support for the bearing (11) on both the sides. The right hand side of the support for the bearing (11) houses the spring loaded lock (9).
Fig. No. 3 consists of the handle (4) for rotation. It also has an indicator arrow and a direction arrow showing direction of rotation.
Fig. No. 4 consists of the box (1), an opening (5), which is covered by the curtain (13), the turn wheel (16) the rubber ring fitted holes (8). The cylinder (6) is covered by the box (1) to ensure that the holes on the cylinder (6) can't be seen from outside and also to protect the inner parts. The box (1) has an opening (5) which is covered by the curtain (13). The direction is marked on the turn wheel (16). The indexing mechanism synchronizes the rubber ring fitted holes (8) on the periphery of the cylinder and the opening (5) in the box (1). By rotating the turn wheel the holes on the cylinder (6) come one by one in line with the opening (5) on the box (1).
Fig. No. 5 consists of the circular scale (3). A circular scale (3) is printed on the box just below the turn wheel (16). The turn wheel (16), the cylinder (6) and the indexing mechanism are so synchronized that the diameter of the hole on the cylinder in front of the opening on the box is correctly indicated by the indicator arrow on the turn wheel (16).

9.1 claim:
1. Simulating Training Device for Assessment of the Cervical Dilatation is an innovative training aid having a wooden box with a circular opening and an opaque curtain. Inside the wooden box there is a rotating drum with a handle.
a) The rubber ring fitted holes (8) of desired size from 3 cm to 10 cm can be brought in the center of the opening by rotating the handle.
b) By putting index and middle fingers in the rubber ring fitted holes (8) the opening (5) on the both side of the box (1) can be palpated under vision or as a blind procedure. After mastering the judgment of the size of the opening from 3cms to l0cms diameter, on the model, actual training of vaginal examination in a living being can be undertaken for further skill development of judgment of cervical dilatation minimizing the risk of infection and botheration to the delivering women.
2. The SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION has a block board platform (10) for supporting the parts of the machine, has a rotating plastic drum or cylinder (6) which is closed on both sides by plastic discs which are glued to the cylinder, which in turn are connected to the shaft (12) through one wooded hub (15) on each side, which is screwed to the disc and to the shaft (12), so that the cylinder (6) is rigidly connected to the shaft (12). The cylinder (6) is covered by the box (1) to ensure that the holes on the cylinder can't be seen from outside and also to protect the inner parts. The box (1) has an opening (5) which is covered by the curtain (13). The shaft (12) is mounted in two wooden bearings (14) which are fixed on the block board platform (10) through support for the bearing (11) on both the sides. This indexing mechanism is on the right hand side consisting of spring loaded lock (9) and slotted indexing wheel (2), which is fixed to the shaft (12) by means of the screw, allows the drum to rotate in one direction, the direction is marked on the turn wheel (16). By rotating this wheel,
rubber ring fitted holes (8) can be brought in the center of the opening j (5) on the box (1) one at a time, the axial central position of the holes is ensured by the suitable spacers (7). The indexing mechanism synchronizes the hole size with the number indicated by the indicator arrow on the circular scale (3). The shaft (12) extends out of the covering box (1) from the right side. The turn wheel (16) is mounted on the shaft on the outside of the box (1) having a handle (4) for rotation having an indicator arrow and a direction arrow showing direction of rotation. The circular scale (3) is printed on the box just below the turn wheel (16). The turn wheel (16), the cylinder (6) and the indexing mechanism are so synchronized that the diameter of the hole on the cylinder indexed in front of the opening on the box is correctly indicated by the arrow on the turn wheel (16).
3. The trainee student has to learn judging the diameter of the hole by sensing the hole diameter only with the touch and correlating with corresponding number directed by the arrow.
4. The hole on the box is covered with the curtain. This facilitates selective viewing of the holes and palpating it at the same time. After this, blind palpitation can be undertaken for each of the holes by the trainee student. After gaining confidence of his judgment on the machine by way of repeated blind palpitations on the machine, he is now ready for learning on the live subjects.
5. The Simulation Training Device for Assessment of the Cervical Dilatation simulates vaginal examination.
6. The SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION saves repeated learning attempts at judging the size on live subjects.
7. The SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION used for the repeated examinations on model is possible without any harm of infection or trauma to a live subject
8. "The SIMULATION TRAINING DEVICE FOR ASSESSMENT OF THE CERVICAL DILATATION", as herein described and with reference to accompanying drawings.