CLIAMS:1. This invention helps in positioning the subject in 900 hip-knee flexion without requiring any other alternative support or device.
2. The said invention allows effectively maintaining the angle of pull with the help of adjustable leg rest & adjustable pulley.
3. The said invention uses mechanical bars & pulley to mount the knee to be treated on traction table. Thus effective traction force & angle of pull can be maintained.
4. The said invention eliminates the cumbersome use of manual traction in osteoarthritis cases.
5. The said invention helps in using the same frame for multiple patients.
6. The said invention helps to give exact distraction force required for a particular case. Thus traction force & time may be given accordingly & may be recorded & reproduced.
7. The said invention can also be used in giving mechanical traction to ankle joint & shoulder joint.
,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 KNEE TRACTION FRAME
2.APPLICANT

NAME : KRISHNA INSTITUTE OF MEDICAL SCIENCES

NATIONALITY: DEEMED TO BE UNIVERSITY DECLARED
U/S 3 OF UGC ACT, 1956 VIDE
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 relates to medical sciences and more particularly to the field of physiotherapy. This invention is directed towards treating osteoarthritis of knee joint using a device that is capable of imparting the desired amount of intermittent traction force to the knee joint in order to give effective distraction to the joint and thus using this KRISHNA KNEE TRACTION FRAME we can apply effective distraction force to the knee joint with the help of traction unit.
5. BACKGROUND

“Mechanical traction is a technique of applying distracting force to produce either a realignment of a structural abnormality or to relieve abnormal pressure on nociceptive receptor systems.” So until now most routinely non-invasive mechanical traction was used for distracting cervical & lumbar spine but never used for distracting knee joint in osteoarthritis. Briefly stating, our invention relates to a mechanical traction device designed to allow the user to apply mechanical traction to knee joint. Conventionally skin traction which is used for lower limb traction can't be used to apply traction above 5 kg. So it can't be used effectively for treatment of osteoarthritis where more traction for the knee may be required. Skeletal traction which is used for lower limb in fracture & other cases is invasive method & requires insertion of pins or wires into the bone either during open surgery or pierced through the skin.

The main complications of it are:
1. Traction force may be applied incorrectly.
2. If traction is too tight, the nerves & blood vessels can be impaired or can cause skin lesions.
3. Infection can occur around pins/ wires.
4. Bone inflammation can occur as a response to a foreign material introduced in the body (skeletal traction).
5. Excessive joint separation (over distraction) can occur if the traction weight is too great. Over distraction can cause nerve damage.
6. Prolonged bed rest is associated with long-term traction which may lead to bedsores, DVT, UTI, etc.
Usually Bohler-Braun frame & Thomas splint which are used mainly for lower limb traction which can't be used effectively for knee joint traction. By using them we can't adjust hip & knee in 900 flexion which is required for effective distraction of knee joint in osteoarthritis.
Conventionally manual traction is used for treating osteoarthritis of knee but it has following limitations:
i. Limited maximum traction force.
ii. Amount of force can't be easily replicated or specifically recorded.
iii. Traction force can't be applied for prolonged time & requires a skilled clinician.
Nowadays osteoarthritis is a common problem. There is no easy device to distract the knee joint and to give intermittent traction so as to relive the symptoms, thus helping patient to get back to their functional activities.
6.SUMMARY

Hence the invention of this new device ‘KRISHNA KNEE TRACTION FRAME’ is made to overcome the drawbacks in the following ways:
Working of the device:
The vertical arms have 5 slots in upper portion each. The pulley is attached to the fixed pulley bar which is then fitted to these vertical bars. We can adjust the height of the pulley as required. Once the required position is reached, the fixed pulley bar is locked with screws to these vertical bars. Once the screws are tightened, the mechanism gets fixed in its position and stability is achieved. The movable stands are fitted to the horizontal arms of the main frame base support. The horizontal arms have 5 slots each in the distal end to allow the shift & lock mechanism. This allows the operator to shift the movable stand in horizontal direction as per the need. Once the required position is achieved, the movable stand is locked with the help of bolts. Once the bolts are tightened, the mechanism gets fixed in its position and stability is achieved.
The Adjustable Stool:
Adjustable Stool is used to rest patient’s knee in 900flexion. It is rectangular in shape. It is well cushioned. The stool is fixed to the stool stand which can be inserted into movable stand. Thus we can insert stool stand into movable stand & adjust the height of the stool as per the need & then once the required position is achieved, the stool stand is locked with the screw in the movable stand. Once the screws are tightened, the mechanism gets fixed in its position and stability is achieved.
The Pulley: The pulley is attached to the fixed pulley bar. The traction unit rope runs through this pulley so the direction of the traction force applied can be well maintained. Thus this device can help in giving mechanical traction to the knee joint according to every patient’s need.
KRISHNA KNEE TRACTION FRAME can be used by physiotherapist to treat the osteoarthritis of knee joint. A single device can be effectively used for treating multiple patients. The said invention will come in handy for routine clinical work as well as for clinicians. It will be an effective treatment option for osteoarthritis. It will make distraction of knee joint in osteoarthritis patient easy. This invention will eliminate need of exertion of physiotherapist while giving manual distraction to knee joint. It will reduce the physiotherapist work.
The said invention will overcome the limits of manual joint distraction like:
• Limited maximum traction force.
• Amount of force can't be easily replicated or specifically recorded.
• Required force can't be applied for prolonged period of time & requires skilled physiotherapist.
Thus by using mechanical traction the above limitations are overcome & the force & time can be well controlled, readily graded & replicated. Thus the said invention may prove to be an effective alternative for treating osteoarthritis of knee joint.
The said invention overcomes the above mentioned drawbacks in the following way:
1. The hip & knee flexion of 900 can be effectively maintained using adjustable traction frame thus effective force can be applied at the knee joint.
2. The angle of pull can be effectively maintained using adjustable pulley.
3. The exact effective force required for knee joint distraction can be given using mechanical traction unit.
4. By using mechanical traction the force & time can be well controlled, readily graded & is replicable.
5. Thus the compressive force acting on knee joint which causes deterioration of joint structures & articular cartilage leading to narrowing of joint space causing osteoarthritis. This compressive force can be reduced by mechanical traction.
Advantages:
• This invention helps in positioning the subject in 900 hip-knee flexion without requiring any other alternative support or device.
• The said invention allows effectively maintaining the angle of pull with the help of adjustable leg rest & adjustable pulley.
• The said invention uses mechanical bars & pulley to mount the knee to be treated on traction table. Thus effective traction force & angle of pull can be maintained.
• The said invention eliminates the cumbersome use of manual traction in osteoarthritis cases.
• The said invention helps in using the same frame for multiple patients.
• The said invention helps to give exact distraction force required for a particular case. Thus traction force & time may be given accordingly & may be recorded & reproduced.
• The said invention can also be used in giving mechanical traction to ankle joint & shoulder joint.
In short this device is time saving and cheaper. It helps in applying effective force required for distraction of knee joint. Traction force & time can be recorded, controlled, easily graded & replicated. It also allows the user to use one traction device for multiple cases. Thus we can apply accurate force, for required time & also can reproduce the same force. Since joint space narrowing is the main cause of knee pain in osteoarthritis, joint distraction may prove an effective alternative treatment in osteoarthritis of the knee.
7. BRIEF DESCRIPTION OF DRAWINGS:

Fig. 1 shows isometric view of KRISHNA KNEE TRACTION FRAME showing components of the frame

Fig. 2 shows top view of KRISHNA KNEE TRACTION FRAME showing adjustable screws (9) and slots on horizontal bars (11).

Fig. 3 shows side view of KRISHNA KNEE TRACTION FRAME showing slots on vertical arms (10), slots on horizontal bars (11) and adjustable screws (8).
8.DETAILS DESCRIPTION OF DRAWINGS:

Fig. 1is the isometric view showing components of the frame (1, 2, 3, 4, 5, 6, 7)
The Main Base Frame (1):
• It has two vertical arms (2) & two horizontal arms (5).
• The vertical arm (2) has 5 slots in each of their upper portion. The pulley (4) is attached to the fixed pulley bars (3) which are then fitted to these vertical bars. We can adjust the height of the pulley as required. Once the required position is reached the fixed pulley bars are locked with screws to these vertical bars. Once the screws are tightened, the mechanism gets fixed in its position and stability is achieved.
• The movable stands (7) with two legs are fitted to the horizontal arms (5) of the main base frame.
• The horizontal arms (5) have ten slots each in the distal end to allow the shift & lock mechanism. This allows the operator to shift the movable stand in horizontal direction as per the need. Once the required position is achieved, the movable stand is locked with the help of bolts. Once these bolts are tightened, the mechanism gets fixed in its position and stability is achieved.
The Adjustable Stool (6):
• Is used to rest patient’s knee in 900 flexion.
• It is well cushioned.
• The stool is fixed to stool stand (7) which can be inserted into movable stand. Thus we can insert stool stand into movable stand & adjust the height of the stool as per the need & then once the required position is achieved, the stool stand is locked with the screws (8) in the movable stand. Once the screws are tightened, the mechanism gets fixed in its position and stability is achieved.
The Pulley (4):
• Pulley is attached to the fixed pulley bars (3).
• The traction unit rope runs through this pulley so the direction of the traction force applied can be well maintained.
• Thus this device can help in giving mechanical traction to the knee joint according to every patient’s need.

Fig. 2 shows the top view showing the components (5, 9, and 11) – it shows the horizontal arm (5), screws (9) fitting the pulley arms to the vertical arms and ten slots each on horizontal arm (11).

Fig. 3 shows the side view showing the components (8, 10, and 11). It shows the adjustable screws (8) on the movable stand, the five slots (10) on the vertical arm and the ten slots each on the horizontal arm.

9. I claim

1. This invention helps in positioning the subject in 900 hip-knee flexion without requiring any other alternative support or device.
2. The said invention allows effectively maintaining the angle of pull with the help of adjustable leg rest & adjustable pulley.
3. The said invention uses mechanical bars & pulley to mount the knee to be treated on traction table. Thus effective traction force & angle of pull can be maintained.
4. The said invention eliminates the cumbersome use of manual traction in osteoarthritis cases.
5. The said invention helps in using the same frame for multiple patients.
6. The said invention helps to give exact distraction force required for a particular case. Thus traction force & time may be given accordingly & may be recorded & reproduced.
7. The said invention can also be used in giving mechanical traction to ankle joint & shoulder joint.
Dated this 28thDay of February, 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

KRISHNA KNEE TRACTION FRAME can be used to treat the osteoarthritis of knee joint. A single device can be effectively used for treating multiple patients. The said invention will come in handy for routine clinical work as well as for clinicians. It will be an effective treatment option for osteoarthritis. It will make distraction of knee joint in osteoarthritis patient easy. This invention will eliminate need of exertion of physiotherapist while giving manual distraction to knee joint. It will reduce the physiotherapist work. By using mechanical traction the limitations of existing tractions are overcome & the force & time can be well controlled, readily graded & replicated. Thus the said invention may prove to be an effective alternative for treating osteoarthritis of knee joint.

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