CN201692029U - Wrist joint movable connecting rod fixed by crossing wrist joint - Google Patents
Wrist joint movable connecting rod fixed by crossing wrist joint Download PDFInfo
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- CN201692029U CN201692029U CN201020164648XU CN201020164648U CN201692029U CN 201692029 U CN201692029 U CN 201692029U CN 201020164648X U CN201020164648X U CN 201020164648XU CN 201020164648 U CN201020164648 U CN 201020164648U CN 201692029 U CN201692029 U CN 201692029U
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- sliding seat
- radius
- connecting rod
- carpal joint
- adjusting screw
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Abstract
The utility model relates to a wrist joint movable connecting rod fixed by crossing wrist joints, which comprises a palm bone sliding seat (2), a radius sliding seat (2'), a palm bone connecting rod (1) fixed on the palm bone sliding seat (2), a radius connecting rod (9) connected with radius sliding seat (2'), and a tightness-adjustable locking bolt (4) connected with the palm bone sliding seat (2) and a radius sliding seat (2'). The utility model overcomes the defects that when the periphery of the existing wrist joint has fracture, the fixation of the wrist joint can cause blood-supply obstacle of the peripheral tissue of the wrist joint, so that the tissue lacks blood and oxygen so as to change the disuse of bone and peripheral tissue of joint capsule, anadesma and joint. The utility model can enable the wrist joint to get early functional training, and can not influence the fixation and recover of the fracture.
Description
Technical field
This utility model relates to orthopedic medical device, specifically is meant a kind of fixed carpal joint movable connecting rod of carpal joint of striding, and it belongs to a kind of connecting rod of orthopaedics external fixation.It is applicable to the trauma care around radius, ulna far-end fracture and the carpal joint.
Background technology
For wound around radius, the various types of fracture of ulna far-end and the carpal joint, existing main Therapeutic Method is internal fixation or external fixation treatment.Long and the complicated operation of big, hemorrhage many, the operating time of internal fixation treatment wound, be not suitable for open fracture treatment, need second operation to take out implants.Though external fixation treatment have wound little, go out insufficiency of blood, operating time short, can satisfy the treatment of open fracture, not need advantage such as second operation, but because around external fixation treatment radius, the various types of fracture of ulna far-end and the carpal joint during wound, usually need fixedly carpal joint, restrict the carpal joint activity, caused carpal joint can not obtain early exercise.Because the set time oversize (be generally 4-6 month, even longer), often fracture has been got well in treatment, and carpal joint also takes place stiff, makes function of joint impaired.
Carpal joint is the complicated joint that the proximal end by chi distal radius, 8 carpal bones and 5 metacarpal bones forms, can do totally 150 ° front and back bends and stretches and 60 ° inside and outside lateroflexion, be between hands and the arm around device, carpal dysfunction also can have a strong impact on the motility of hand.
Near the radius far-end fracture carpal joint fracture is modal to be radius far-end fracture, can be divided into Colles fracture (Colles fracture), smith's fracture (Smith fracture), barton's fracture (Barton fracture) and comminuted fracture of distal radius; Other also have all types of fracture of the carpal bone and metacarpal bone fractured near end, wherein important is lunar fracture, scaphoid bone fracture and first metacarpal bone basilar part fracture.Scaphoid bone fixation of fractures scope need comprise elbow joint and thumb metacarpophalangeal joints.Navicular bone of hand blood is poor for situation, thus the set time need reach 3-4 month, and bone does not connect and osteonecrosis take place easily.
Metacarpal fracture often is the result of hand injury direct violence, and the open fracture ratio is higher, and often with the merging damage of tendon neural blood vessel etc., clinical treatment must be looked the concrete condition decision, and the external fixation scope generally needs to surpass wrist.
During the carpal joint surrounding fracture, carpal fixing can cause carpal joint surrounding tissue blood supply disorder, make tissue ischemia, anoxia and cause the useless usefulness of joint capsule, ligament, joint surrounding tissue and bone to sexually revise finally causes the fibrous ankylosis and the functional disorder in joint, after though limbs joint is removed braking, joint surrounding tissue blood is for recovery, and the slight activity in joint in addition improves the nutrition of tissue, the degeneration of joint tissue is recovered gradually, but this recovery is extremely slow.
Therefore invent a kind of fixed carpal joint movable connecting rod of carpal joint of striding, can make carpal joint obtain early stage functional exercise, do not influence fixation of fractures again and revert to for a urgent and important job.
Summary of the invention
The purpose of this utility model is the weak point at above-mentioned existing carpal joint surrounding fracture treatment, and provide a kind of fixed carpal joint movable connecting rod of carpal joint of striding, it can be for convenience detach, and can effectively treat the carpal joint surrounding fracture, by with the use that forms a complete set of of existing external fixation system, satisfy around external fixation treatment radius, the various types of fracture of ulna far-end and the carpal joint wound and keep wrist joint function normal.
The purpose of this utility model reaches by following measure: stride the fixed carpal joint movable connecting rod of carpal joint, it is characterized in that it comprises metacarpal bone sliding seat, radius sliding seat, and be fixed on metacarpal bone connecting rod and the radius connecting rod that is connected with the radius sliding seat on the metacarpal bone sliding seat, connect the clamping screw of the scalable degree of tightness of metacarpal bone sliding seat and radius sliding seat.
In technique scheme, described metacarpal bone sliding seat and radius sliding seat are the rounded seat that is rotatably connected of an end, and a symmetrical reverse that is rotatably connected of two circles interlocks.
In technique scheme, contacting of described metacarpal bone sliding seat and radius sliding seat all has plane teeth on the end face, described plane teeth is positioned at outside the cannelure, spring is arranged in the cannelure, cannelure between centre bore and plane teeth, clamping screw pass the metacarpal bone sliding seat centre bore and with radius sliding seat centre bore around open tubular column by being threaded.
In technique scheme, described plane teeth is a loop configuration.
In technique scheme, it comprises that also struts an adjusting part, and described strutting regulated part between radius sliding seat and radius connecting rod, struts two ends of regulating part and is connected with the radius connecting rod with the radius sliding seat respectively.
In technique scheme, the described adjusting portion branch that struts comprises the adjusting screw(rod) that is fixed together with the radius sliding seat, Adjusting bolt Adjusting screw between adjusting screw(rod) and radius connecting rod, first locking nut between adjusting screw(rod) and Adjusting bolt Adjusting screw, locking nut is sleeved on the adjusting screw(rod), one end of adjusting screw(rod) and Adjusting bolt Adjusting screw is sleeved on second locking nut on the radius connecting rod by being threaded, and the other end of Adjusting bolt Adjusting screw and radius connecting rod are by being threaded.
In technique scheme, the centre of described Adjusting bolt Adjusting screw have can with the rectangular structure of the square surface of key coupling.
In technique scheme, the diameter of the screw that spins with radius connecting rod and radius sliding seat on the two ends of described Adjusting bolt Adjusting screw and tooth are apart from identical, and rotation direction is opposite.
The utlity model has following advantage: when 1. forming a complete set of use, can form radius, the various types of fracture of ulna far-end and the carpal joint building block of trauma care exterior fixation bracket on every side with existing external fixation system.2. early stage what treat, can lock the carpal joint movable connecting rod as requested fully, prevent that unsuitable activity from causing the treatment failure.3. treatment mid-term of wound around radius, the various types of fracture of ulna far-end and the carpal joint, in treatment and functional exercise when needing, unclamp clamping screw, make wrist joint function obtain taking exercise, recover wrist joint function, and can after finishing mild exercise, lock clamping screw once more, carpal joint is fixed.4. in the treatment late period of wound around radius, the various types of fracture of ulna far-end and the carpal joint, can unclamp clamping screw according to the needs of treatment and functional exercise equally, it is normal to make wrist joint function obtain the exercise and the maintenance wrist joint function of greater strength.5. around radius, the various types of fracture of ulna far-end and carpal joint, in the therapeutic process of wound,, can strut carpal joint as required for the protection carpal joint; Also can recover, as required carpal joint and wound site be pressurizeed in order to stimulate wound.
This utility model is striden the scope of application of the fixed carpal joint movable connecting rod of carpal joint: in the various types of fracture of distal radius, and the treatment of wound around the carpal joint, metacarpal fracture.
Description of drawings
Fig. 1 strides the structure cutaway view of the fixed carpal joint movable connecting rod of carpal joint for this utility model.
Fig. 2 is the structure vertical view (containing broken section) of Fig. 1.
Fig. 3 strides the structural representation that the fixed carpal joint movable connecting rod of carpal joint unclamps half-twist behind the clamping screw for this utility model.
Fig. 4 is the structure cutaway view of radius sliding seat in this utility model.
Fig. 5 is the right view (containing broken section) of Fig. 3
Fig. 6 is the structural representation of Adjusting bolt Adjusting screw in this utility model.
1. metacarpal bone connecting rods among the figure, 2. metacarpal bone sliding seat, 2 '. the radius sliding seat, 3. open tubular column, 4. clamping screw, 5. spring, 6. adjusting screw(rod), 7. Adjusting bolt Adjusting screw, 8. first locking nut, 8 '. second locking nut, 9. radius connecting rod, 10. rectangular structure, 11. plane teeth, 12. centre bore, 13. cannelures.
The specific embodiment
Describe performance of the present utility model in detail below in conjunction with accompanying drawing, but they do not constitute to qualification of the present utility model, only do for example.Simultaneously by illustrating that advantage of the present utility model will become clear more and understanding easily.
Consult accompanying drawing as can be known: this utility model is striden the fixed carpal joint movable connecting rod of carpal joint, it is characterized in that it comprise metacarpal bone sliding seat 2, radius sliding seat 2 ', be fixed on the metacarpal bone connecting rod 1 on the metacarpal bone sliding seat 2, with with the radius connecting rod 9 of radius sliding seat 2 ' be connected, connect metacarpal bone sliding seat 2 and radius sliding seat 2 ' the clamping screw 4 of scalable degree of tightness.
Metacarpal bone sliding seat 2 and radius sliding seat 2 ' be the rounded seat that is rotatably connected of an end, a symmetrical reverse that is rotatably connected of two circles interlocks.
Metacarpal bone sliding seat 2 and radius sliding seat 2 ' contact plane teeth 11 all arranged on the end face, described plane teeth 11 is positioned at outside the cannelure 13, spring 5 is arranged in the cannelure 11, cannelure 13 between centre bore 12 and plane teeth 11, clamping screw 4 pass metacarpal bone sliding seat 2 centre bore 12 and with open tubular column 3 around radius sliding seat 2 ' centre bore 12 by being threaded.Plane teeth 11 is a loop configuration.
It comprises that also struts an adjusting part, described strut regulate part radius sliding seat 2 ' and radius connecting rod 9 between, strut regulate part two ends respectively with radius sliding seat 2 ' be connected with radius connecting rod 9, this device is when fractures recovers substantially, be used to regulate the spacing between the carpal joint, help the recovery of wrist joint function by the mandatory adjusting of spacing.
Strut the adjusting portion branch and comprise adjusting screw(rod) 6 with radius sliding seat 2 ' be fixed together, Adjusting bolt Adjusting screw 7 between adjusting screw(rod) 6 and radius connecting rod 9, first locking nut 8 between adjusting screw(rod) 6 and Adjusting bolt Adjusting screw 7, locking nut 8 is sleeved on the adjusting screw(rod) 6, one end of adjusting screw(rod) 6 and Adjusting bolt Adjusting screw 7 is by being threaded, be sleeved on second locking nut 8 on the radius connecting rod 9 ', the other end of Adjusting bolt Adjusting screw 7 and radius connecting rod 9 are by being threaded.Spacing is two-way adjusting between the carpal joint.
The centre of Adjusting bolt Adjusting screw 7 have can with the rectangular structure 15 of the square surface of key coupling.
On the two ends of Adjusting bolt Adjusting screw 7 with the diameter of the screw of radius connecting rod 9 and radius sliding seat 2 ' spin and tooth apart from identical, rotation direction is opposite.When the rectangular structure 15 on the adjusting Adjusting bolt Adjusting screw 7, radius connecting rod 9 and adjusting screw(rod) 6 can equidistantly in opposite directions move, and guarantee the carpal joint accuracy that struts and pressurize and regulate of wound surface (comprising little bone on the carpal joint) on every side.
This utility model metacarpal bone connecting rod 1 by with the pin/bar fixation clamp of external fixation system and being connected of metal spicule (existing product), be connected with patient's metacarpal bone;
Clamping screw 4 is used to be connected palm movable part (comprising metacarpal bone connecting rod and metacarpal bone sliding seat) and struts the adjusting part with spring 5, maintenance is slapped movable part and is strutted firm connection of regulating part, makes palm movable part and strut the adjusting part to rotate flexibly around clamping screw.In needs, can tighten clamping screw and lock palm movable part and strut the adjusting part, make palm movable part and strut adjusting part locking and fix.
Metacarpal bone connecting rod 1 is made for cylindrical stainless steel.Radius connecting rod 9 is made an end for cylindrical stainless steel the screw thread that is complementary with Adjusting bolt Adjusting screw 7.
Metacarpal bone sliding seat 2 and radius sliding seat 2 ' be the rounded seat that is rotatably connected of an end, a symmetrical reverse that is rotatably connected of two circles interlocks.Plane teeth 11 interlock mutually on it prevents metacarpal bone sliding seat 2 and radius sliding seat 2 ' effect of rotation mutually when locking to play.
When unclamping clamping screw 4, open tubular column 3 makes metacarpal bone sliding seat 2 and radius sliding seat 2 ' can rotate around it; But during locking clamping screw 4, can stop the rotation of two sliding seat by clamping screw 4 with metacarpal bone sliding seat 2 and radius sliding seat 2 ' locking.
Strutting to regulate partly has an adjusting screw(rod) 6, and the screw thread that is complementary with the Adjusting bolt Adjusting screw 7 and first locking nut 8 is arranged on the adjusting screw(rod) 6.
Adjusting bolt Adjusting screw 7 is the middle rectangular structure 10 that the match and regulate spanner is arranged, and there is the screw 16 with radius connecting rod 9 and second locking nut 8 ' be complementary at Adjusting bolt Adjusting screw 7 two ends, and the diameter of Adjusting bolt Adjusting screw 7 two end screws, tooth are apart from identical, and rotation direction is opposite.
By cooperating and sign confidentiality agreement, gather treatment 34 routine patients, Colles 12 examples of fracturing wherein, Smith 14 examples of fracturing, Barton 3 examples of fracturing, metacarpal fracture 5 examples, male 16 examples, women 18 examples, age 42-70 year with certain hospital.Adopt this utility model ankle joint movable connecting rod.
Alternative matched group 27 examples adopt conventional treatments also to organize in contrast.Colles 10 examples of fracturing wherein, Smith 11 examples of fracturing, Barton 2 examples of fracturing, metacarpal fracture 4 examples, male 13 examples, women 14 examples, age 40-71 year.
Rehabilitation evaluation is measured the carpal joint mobility with protractor respectively before and after treatment, the normal carpal range of motion is as the criterion with " Chinese rehabilitation medicine " [2] index of correlation.
Rehabilitation therapy method is based on Joint Mobilization, and every day 1～2 time, each micro-wave therapeutic 20min that is before softens stiff joint.
Three stages principle is by stages followed in the rehabilitation rehabilitation, and emphasis is safeguarded the not joint motion of fixed position of respectively performing the operation, and prevents that tiger and other from referring to the contracture of web.
After the orthopaedics Clinical Processing, can begin the same day to do shoulder active exercise significantly, and elbow bends and stretches, clenches fist, stretches fist, digital opposition of thumb etc. and initiatively practise, progressively increase firmly degree.
The 2nd week rose, and the patient holds fist and does wrist flesh firm static contraction exercise in the wrong, wouldn't do the wrist extensor exercise.
Increased in the 3rd week count on one's fingers, to refer to, to the resistance exercise of the palm.The wrist that carries out system after the union of fracture is bent, is stretched, lateroflexion and the exercise of forearm rotary moveable degree, and forearm is respectively organized the muscle group exercise.1-2 increases palmar carpal branch support exercise after week.Do the mobility and the muscle strength exercise of carpometacarpal joint of thumb and metacarpophalangeal joints after the scaphoid bone union of fracture.
Use various braces that good result is often arranged behind the hand injury in the phase III rehabilitation.The comprehensive grading system:
1., bend and stretch the wrist front and back that can be 120-150 ° (comprising 120 °) is 5 minutes, the inside and outside lateroflexion that wrist can be 50-60 ° (comprising 50 °) is 5 minutes.
2., bend and stretch the wrist front and back that can be 100-120 ° (do not comprise 120 °, but comprise 100 °) is 3 minutes, the inside and outside lateroflexion that wrist can be 40-50 ° (do not comprise 50 °, but comprise 40 °) is 3 minutes.
3., bend and stretch the wrist front and back that can be 60-100 ° (do not comprise 100 °, but comprise 60 °) is 1 minute, the inside and outside lateroflexion that wrist can be 20-40 ° (do not comprise 40 °, but comprise 20 °) is 1 minute.
4., wrist can be done and bend and stretch less than 60 ° front and back is 0 minute, the inside and outside lateroflexion that wrist can be done less than 20 ° is 0 minute.
If Comprehensive Assessment is excellent for being divided into greater than 8,4 are divided into healing, and 2 is general, and it is poor to be divided into less than 2.
Through evaluation, adopting this utility model carpal joint movable connecting rod outstanding is 25 people, and outstanding rate is 73.5%, cures 8 people, is generally 1 people, and cure rate reaches 97.1%.
Adopting conventional external fixation Therapeutic Method outstanding in organizing in contrast is 12 people, and outstanding rate is 44.4%, cures 9 people, is generally 5 people, and difference is 1 people.Cure rate reaches 77.8%.
Find through contrast: the outstanding rate and the cure rate of observation group all are higher than matched group, and difference has utmost point significance meaning.And can shorten patient's the recovery course of disease (on average the shortening time is about 1 month) greatly.
Claims (8)
1. stride the fixed carpal joint movable connecting rod of carpal joint, it is characterized in that it comprises metacarpal bone sliding seat (2), radius sliding seat (2 '), be fixed on metacarpal bone connecting rod (1) and the radius connecting rod that is connected with radius sliding seat (2 ') on the metacarpal bone sliding seat (2) (9, connect the clamping screw (4) of the scalable degree of tightness of metacarpal bone sliding seat (2) and radius sliding seat (2 ').
2. the fixed carpal joint movable connecting rod of carpal joint of striding according to claim 1 is characterized in that described metacarpal bone sliding seat (2) and radius sliding seat (2 ') are the rounded seat that is rotatably connected of an end, and a symmetrical reverse that is rotatably connected of two circles interlocks.
3. the fixed carpal joint movable connecting rod of carpal joint of striding according to claim 1 and 2, it is characterized in that contacting of described metacarpal bone sliding seat (2) and radius sliding seat (2 ') all has plane teeth (11) on the end face, described plane teeth (11) is positioned at outside the cannelure (13), spring (5) is arranged in the cannelure (11), cannelure (13) is positioned between centre bore (12) and the plane teeth (11), clamping screw (4) pass metacarpal bone sliding seat (2) centre bore (12) and with radius sliding seat (2 ') centre bore (12) open tubular column (3) on every side by being threaded.
4. the fixed carpal joint movable connecting rod of carpal joint of striding according to claim 3 is characterized in that described plane teeth (11) is a loop configuration.
5. according to the described fixed carpal joint movable connecting rod of carpal joint of striding of arbitrary claim among the claim 1-4, it is characterized in that it comprises that also struts an adjusting part, the described adjusting part that struts is positioned between radius sliding seat (2 ') and the radius connecting rod (9), and (9 are connected with the radius connecting rod with radius sliding seat (2 ') respectively to strut two ends of regulating part.
6. the fixed carpal joint movable connecting rod of carpal joint of striding according to claim 5, it is characterized in that the described adjusting portion branch that struts comprises the adjusting screw(rod) (6) that is fixed together with radius sliding seat (2 '), be positioned at the Adjusting bolt Adjusting screw (7) between adjusting screw(rod) (6) and the radius connecting rod (9), be positioned at first locking nut (8) between adjusting screw(rod) (6) and the Adjusting bolt Adjusting screw (7), locking nut (8) is sleeved on the adjusting screw(rod) (6), one end of adjusting screw(rod) (6) and Adjusting bolt Adjusting screw (7) is by being threaded, be sleeved on second locking nut (8 ') on the radius connecting rod (9), the other end of Adjusting bolt Adjusting screw (7) and radius connecting rod (9) are by being threaded.
7. the fixed carpal joint movable connecting rod of carpal joint of striding according to claim 6, the centre that it is characterized in that described Adjusting bolt Adjusting screw (7) have can with the rectangular structure (10) of the square surface of key coupling.
8. according to claim 6 or the 7 described fixed carpal joint movable connecting rods of carpal joint of striding, the diameter that it is characterized in that the screw that spins with radius connecting rod (9) and radius sliding seat (2 ') on the two ends of described Adjusting bolt Adjusting screw (7) and tooth are apart from identical, and rotation direction is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020164648XU CN201692029U (en) | 2010-04-09 | 2010-04-09 | Wrist joint movable connecting rod fixed by crossing wrist joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020164648XU CN201692029U (en) | 2010-04-09 | 2010-04-09 | Wrist joint movable connecting rod fixed by crossing wrist joint |
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| Publication Number | Publication Date |
|---|---|
| CN201692029U true CN201692029U (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020164648XU Expired - Lifetime CN201692029U (en) | 2010-04-09 | 2010-04-09 | Wrist joint movable connecting rod fixed by crossing wrist joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803941A (en) * | 2010-04-09 | 2010-08-18 | 武汉康斯泰德科技有限公司 | Wrist joint movable connecting rod for fixing across wrist joint |
-
2010
- 2010-04-09 CN CN201020164648XU patent/CN201692029U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803941A (en) * | 2010-04-09 | 2010-08-18 | 武汉康斯泰德科技有限公司 | Wrist joint movable connecting rod for fixing across wrist joint |
| CN101803941B (en) * | 2010-04-09 | 2012-08-29 | 武汉康斯泰德科技有限公司 | Wrist joint movable connecting rod for fixing across wrist joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110105 Effective date of abandoning: 20120829 |