CLIAMS:1. KRISHNA ARTIFICIAL METALLIC NEOJOINT is to handle the problem of cranio/temporomandibular joint ankylosis patients, who are operated multiple times with recurrence of the ankylosis or fusion of the joint components;

i) This artificial neo joint allows near normal oral opening, as patients with Cranio/temporomandibular joint ankylosis are not able to open the mouth.

ii) The said invention allows carrying out near normal chewing of the food and other protrusive and side to side movements of the lower jaw.

iii) The Krishna Artificial Metallic Neojoint is fixed on the lower jaw, at the angle of the mandible, after creating osteotomy, with screws, so it is stable during mandibular movements.

iv) The Krishna Artificial Metallic Neojoint restores lost function of the jaw due to extensive ankylosis.
,TagSPECI:
FORM 2

THE PATENT ACT 1970

(39 OF 1970)

&

THE PATENTS RULES, 2003

COMPLETE SPECIFICATION

(See SECTION 10, RULE 13)

1.TITLE OF THE INVENTION :

KRISHNA ARTIFICIAL NEOJOINT :- NEW ARTIFICIAL METALLIC JOINT REPLACEMENT FOR ANKYLOSIS CRANIO/ TEMPOROMANDIBULAR JOINT DISORDER
2. APPLICANT/S:
KRISHNA INSTITUTE OF MEDICAL SCIENCES

NATIONALITY:
DEEMED TO BE UNIVERSITY DECLARED
U/S 3 OF UGC ACT, 1956 VIDES NOTIFICATION NO. F.9-15 / 2001 – U-3 OF THE MINISTRY OF HUMANRESOURCES
DEVELOPMENT, GOVT.OF INDIA

ADDRESS :
KRISHNA INSTITUTE OF MEDICAL SCIENCES,
NEAR DHEBEWADI ROAD, MALKAPUR, KARAD- 415110, 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. TECHINICAL FIELD

The present invention is related to medical science, particularly to the field of dentistry-its surgical branch -Oral & Maxillofacial Surgery.
KRISHNA ARTIFICIAL NEOJOINT :- NEW ARTIFICIAL METALLIC JOINT REPLACEMENT FOR ANKYLOSIS CRANIO/ TEMPOROMANDIBULAR JOINT DISORDER for the cases of cranio/ temporomandibular Ankylosis, which is to be used to replace old diseased cranio/ temporomandibular joint in order to restore the lost function of the jaw,(mastication) and opening and closing the mouth.
5. BACKGROUND

Presently in the field of Oral & Maxillofacial Surgery, (which is a special surgical branch in dentistry,) for the patients, who are affected by Cranio/ Temporo-Mandibular joint Ankylosis, the only treatment option is surgery. The patients, who are affected by Cranio/ Temporo-Mandibular joint Ankylosis , cannot open the mouth and carryout normal movements of the lower jaw, because of bony fusion. The standard conventional surgical treatment option available is the release of bony fusion and interposition of either alloplastic or autogenous material in the surgical gap created to prevent reankylosis or refusion of the joint. Many times these patients are operated repeatedly with recurrence again, because of aggressive nature of the disorder. The recurrence rate of reankylosis in the literature is very high in spite of following all internationally accepted surgical protocols. (4% to 30%).
KRISHNA ARTIFICIAL NEOJOINT: NEW ARTIFICIAL METALLIC JOINT REPLACEMENT FOR ANKYLOSIS CRANIO/ TEMPOROMANDIBULAR JOINT DISORDER (KRISHNA ARTIFICIAL METALLIC NEOJOINT) for the cases of cranio/ temporomandibular ankylosis will be used in the patients, who have tendancy for reankylosis and who have been operated multiple times, with refusion. This will help the patients to reestablish their lost function of the lower jaw.

6. SUMMARY

This KRISHNA ARTIFICIAL NEOJOINT: NEW ARTIFICIAL METALLIC JOINT REPLACEMENT FOR ANKYLOSIS CRANIO/ TEMPOROMANDIBULAR JOINT DISORDER (KRISHNA ARTIFICIAL METALLIC NEOJOINT) is to replace the old ankylosed Cranio/ TM joint function by relocating and fixing it at the angle of the mandibular bone, (lower jaw) without touching the fused joint. This new artificial temporomandibular joint replacement will help the patient to restore the lost function of the affected joint and establish near normal oral opening and enable the patient to carryout normal activities of the lower jaw.

Aims and objectives of surgery--
To establish functional joint,thereby-
1.Improve function
2.Improve nutrition
3.Improve oral hygiene
4. Carryout necessary dental treatment.
Advantages Of KRISHNA ARTIFICIAL METALLIC NEOJOINT :
1. Innovative deviation from the conventional philosophy for the treatment of cranio/ temporo-mandibular Joint ankylosis.
2. It is very conservative, simplified surgical technique and less invasive.no vital structures encountered, reduces surgical risk with improved results.
3. Special merit in cases of extensive, recurrent ankylosis, especially in patients, who were operated more than twice, with conventional surgery and again ended with reankylosis.
4. Creation of the neojoint, leaving the ankylotic exuberant bony mass undisturbed.
5. Functional neo artificial joints are created at both the angles of the mandible.
6. Vertical height of the ramus of the mandible is unaltered.
7. No sensory deficit in the area of distribution of inferior alveolar nerve, as it is kept intact.
8. Can help to certain extent in relieving Obstructive Sleep Apnoea Syndrome, often associated with Cranio/ temporomandibular joint ankylosis patients, by simultaneous forward positioning of the body of the mandible.
New Philosophy--
In severe recurrent ankylosis cases of the cranio/ temporomandibular joints-
1. The scar tissue, which surrounds the ankylotic mass, often prevents unimpeded mandibular movements, even when bony mass has been meticulously excised. Hence the management of reankylosis becomes progressively difficult, with each surgical intervention, as the scar tissue increases.
2. Also large gap arthroplasty, leaves large opposing raw bony surfaces, which is also likely to be bridged by dense scar tissues, thus leading to reankylosis.
3. The ankylotic mass is not a neoplastic process, but it is capable of continued growth. For this reason, we propose the formation of artificial metallic neo joint by relocating and fixing it to the angle of the mandible after carrying out body osteotomy procedure. Here, the creation of the neojoints is carried out, at new location at the angle of the mandible, leaving the ankylotic exuberant mass undisturbed.
Selection criteria for application of Krishna Artificial Metallic Neojoint-
1. Extensive ankylosis (bony fusion) with complete destruction of normal anatomic structures of cranio/temporomandibular joint with nil oral opening.
2. Previously operated patients with standard, conventional surgical methods at least two or three times, ending up with reankylosis. (Patients with history of recurrent reankylosis)
7. BRIEF DESCRIPTION OF DRAWINGS:

Figure 1 – Diagram showing the Krishna Artificial Metallic Neojoint.
Figure 2 – Diagram showing the actual fabricated Krishna Artificial Metallic Neojoint.
Figure 3 – Diagrams showing clinical application of Krishna Artificial Metallic Neojoint.
8. DETAILS DESCRIPTION OF DRAWINGS:

Figure 1 :
Shows the diagram of the KRISHNA ARTIFICIAL METALLIC NEOJOINT for the cases of Cranio/ Temporomandibular Ankylosis.
a. Stable component
b. Pin and roller/bush type of hinge joint incorporated in the device.
c. Movable shaft
c’. Diagram showing the downward movement of the movable shaft.

Figure 2 :

A. Magnified view of pin and roller/ bush type of hinge joint incorporated in the device.

B. Diagram of the external surface of the Krishna artificial metallic neo joint device, which is made up of surgical stainless steel or titanium metal, having two independent components with one stable base and other movable shaft and pin, and roller/ bush type hinge joint in between to allow the movement of the jaw.
C. Internal surface view of the device, with two components-one stable and another with hinge joint, which allows movement of the neojoint.
D. & E. Views of the device showing various possible movements of the neojoint.
Figure 3 – A, B and C
Shows a set of diagrams of the Krishna Artificial Metallic Neojoint for the cases of Cranio/ Temporomandibular Ankylosis.
A (a) Arrow - Osteotomy cut at the angle of the mandible carried out while keeping the integrity of inferior alveolar mandibular nerve. Here the fused bony reankylosis of the cranio/ temporomandibular joint/ joints is left intact.
B (b) Arrow - Krishna Artificial Metallic Neojoint for the cases of Cranio/ Temporomandibular Ankylosis is adapted on the external cortex of the mandibular bone, at the inferior border and fixed with screws on either side of the osteotomy cut. The bush type of hinge joint of the device is adjusted at the osteotomy cut, so that anterior tooth bearing portion of the mandible can be used for carrying out mandibular movements.
C (c’) – Showing the downward movement of Krishna Artificial Metallic Neojoint for the cases of Cranio/ Temporomandibular Ankylosis during opening of the jaw.

9. I claim

1. KRISHNA ARTIFICIAL METALLIC NEOJOINT is to handle the problem of cranio/temporomandibular joint ankylosis patients, who are operated multiple times with recurrence of the ankylosis or fusion of the joint components;

i) This artificial neo joint allows near normal oral opening, as patients with Cranio/temporomandibular joint ankylosis are not able to open the mouth.

ii) The said invention allows carrying out near normal chewing of the food and other protrusive and side to side movements of the lower jaw.

iii) The Krishna Artificial Metallic Neojoint is fixed on the lower jaw, at the angle of the mandible, after creating osteotomy, with screws, so it is stable during mandibular movements.

iv) The Krishna Artificial Metallic Neojoint restores lost function of the jaw due to extensive ankylosis.

Dated this 7thDay of July, 2013.

DR.M.V.GHORPADE
(REGISTRAR)
FOR KRISHNA INSTITUTE OF MEDICAL SCIENCES

To
The Controller of Patents,
The patent office,
At Mumbai – 400 037

10.ABSTRACT OF THE INVENTION

This KRISHNA ARTIFICIAL NEOJOINT: NEW ARTIFICIAL METALLIC JOINT REPLACEMENT FOR ANKYLOSIS CRANIO/ TEMPOROMANDIBULAR JOINT DISORDER (KRISHNA ARTIFICIAL METALLIC NEOJOINT) is to replace the old ankylosed Cranio/ TM joint function by relocating and fixing it at the angle of the mandibular bone, (lower jaw) without touching the fused joint. This new artificial temporomandibular joint replacement help the patient to restore the lost function of the affected joint and establish near normal oral opening and enable the patient to carryout normal activities of the lower jaw.

DR.M.V.GHORPADE
(REGISTRAR)
FOR KRISHNA INSTITUTE OF MEDICAL SCIENCES