CN217744565U - Pressurization navigation head for tibial plateau resetting and fixing - Google Patents

Abstract

The utility model provides a pressurization navigation device for tibial plateau resetting and fixing, belonging to the field of medical apparatus; the clamp comprises a first clamp handle, a second clamp handle and a main pin, wherein the first clamp handle and the second clamp handle are hinged through the main pin, and a limiting part, a guiding part and a locking part which are connected are arranged on the first clamp handle and the second clamp handle. The utility model discloses a set up guide sleeve, spherical sleeve, the arc board, first spacing tooth, wherein angle skew can not take place all the time in the guide sleeve removes the in-process, provide accurate guide to the operation screw of not unidimensional shin bone, the application scope of this device has been improved, the arc board can carry out the fixed of multi-angle through first spacing tooth, the contactable scope on first spacing tooth and shin bone surface has been increased, the adverse effect that the shin bone of surperficial unevenness led to the fact spacing to spacing part has been reduced, adopt this limit design deeply, avoid spacing part to influence fracture in the pressurization in-process and reset.

Description

Pressurization navigation head for tibial plateau resetting and fixing

Technical Field

The utility model relates to the field of medical equipment, in particular to fixed pressurization navigation head resets of tibial plateau.

Background

Tibial plateau fracture is one of common knee injuries in trauma, has higher treatment requirements due to intra-articular fracture, and aims to treat the knee joint with smooth joint surface, good joint stability, normal lower limb force line, recovery of the activity range of the knee joint and avoidance of secondary traumatic arthritis. Tibial plateau fractures are often accompanied by knee joint pain, swelling, and significantly limited mobility of the injured limb. In particular, with the popularization of automobiles and non-automobiles and the development of aging population, the fracture of the tibial plateau has an increasing trend in recent years. Fractures are mostly caused by intra-articular fracture waves and load bearing articular surfaces, and also by damage of meniscus and articular ligaments. Most of the parts are high-energy injuries, fractures are crushed, and poor movement is easy to occur in the improper knee joint treatment, so that the operation rate is high. At present, surgery treatment is mostly adopted for severe tibial plateau fractures, clinically mainstream steel plates are designed to be low-incisura steel plates, namely, the steel plates are close to the proximal tibial segment as far as possible, proximal row nails are placed below a joint surface so as to form better support, but the tibial plateau has the anatomical characteristic that the inner side of the tibial plateau is concave and the outer side is convex, in the actual operation process of surgery, screws which are arranged side by side at the proximal end are difficult to be beaten into a plane, and the risk of beating the proximal end into the joint surface is caused. Therefore, when the joint bone needs to be drilled and positioned, a guider needs to be used for positioning and guiding so as to avoid driving screws into the joint.

Present tibial plateau resets and uses guider can take place angular deviation at the tight in-process of clamp, can't accomplish accurate adaptation to unidimensional shin bone, the application range is reduced, present tibial plateau resets simultaneously and uses guider's spacing end mostly with clamp snap-on, make spacing end can't be convenient for spacing position contact with the shin bone surface, the spacing stability of spacing end has been reduced, therefore, this application provides a fixed pressurization navigation head that tibial plateau resets and satisfies the demand.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a tibial plateau resets fixed pressurization navigation head can take place the angular deviation at the clamp tight in-process with solving current tibial plateau and resets with guider, can't accomplish accurate adaptation to not unidimensional shin bone, the application range is reduced, current tibial plateau resets with guider's spacing end most simultaneously with clamp snap-on, make spacing end can't be convenient for spacing position contact with the shin bone surface, the problem of spacing stability of spacing end has been reduced.

In order to solve the technical problem, the utility model provides a following technical scheme:

a pressurization navigation device for tibial plateau resetting and fixing comprises a first clamp handle, a second clamp handle and a main pin, wherein the first clamp handle and the second clamp handle are hinged through the main pin, and a limiting component, a guiding component and a locking component which are connected are arranged on the first clamp handle and the second clamp handle;

the guide component comprises a limiting sleeve fixedly mounted on one side of the first clamp handle, a loop bar is sleeved in the limiting sleeve in a sliding mode, first sliding grooves are formed in two sides of the limiting sleeve, first limiting pins are fixedly mounted on two sides of the loop bar, the first limiting pins are connected with the first sliding grooves in a sliding mode, second sliding grooves are formed in two sides of the second clamp handle, third sliding grooves are formed in the adjacent sides of the second sliding grooves of the second clamp handle, the loop bar is connected with the second sliding grooves in a sliding mode, second limiting pins are fixedly mounted on two sides of the loop bar, the second limiting pins are connected with the third sliding grooves in a sliding mode, a guide sleeve is fixedly sleeved on the outer side of the loop bar, and a plurality of second limiting teeth are arranged at one end of the guide sleeve in an annular array;

the limiting component is used for limiting the surface of the tibia, the guide component is used for being matched with the limiting component to clamp the tibia and guide a screw for fixing the tibia, and the locking component is used for limiting the guide component and the limiting component after the tibia is clamped.

Preferably, the limiting part comprises a spherical sleeve fixedly mounted at one end of the first clamp handle, a first cavity is formed in the spherical sleeve, a limiting ball head is rotatably sleeved in the first cavity, an arc plate is fixedly mounted on one side of the limiting ball head, and a plurality of first limiting teeth are arranged on one side of the arc plate in an annular array.

Preferably, a rack is fixedly mounted on one side of the second clamp handle, and a fourth sliding groove is formed in one side of the rack.

Preferably, a second cavity is formed in one side of the first forceps handle, and fifth sliding grooves are formed in inner walls of two sides of the second cavity.

Preferably, the inner walls of the two sides of the second cavity are fixedly provided with the same third limiting pin, and the third limiting pin is connected with the fourth sliding groove in a sliding manner.

Preferably, one side of the first forceps handle is fixedly provided with a first hand guard, and one side of the first hand guard is provided with a first through hole.

Preferably, the closure part include with second cavity both sides inner wall fixed connection's fourth spacer pin, the guide ring has been cup jointed in the outer lane rotation of fourth spacer pin, first spacing post and the spacing post of second have been cup jointed in the inboard slip of guide ring, the first connecting rod of one side fixedly connected with of first spacing post, the one end fixed mounting of first connecting rod has first stopper, first stopper and two fifth spout sliding connection, the one end fixedly connected with of the spacing post of second runs through the second connecting rod of first hand protector, the one end fixed mounting of second connecting rod has the second stopper, the one side fixedly connected with cover of second stopper is established the first spring in the second connecting rod outside, the one end of first spring with first hand protector is contradicted, first stopper with the rack joint.

Preferably, a stop block is fixedly mounted on one side of the first clamp handle and is positioned in the first hand guard.

Preferably, one side fixed mounting of first pincers handle has the second hand protector, the second pincers handle the dog with first hand protector and first pincers handle with the second hand protector is integrated into one piece's carbide respectively.

Preferably, a second spring is fixedly mounted on one side of the first forceps handle, and one end of the second spring is fixedly connected with one side of the second forceps handle.

Compared with the prior art, the invention at least has the following beneficial effects:

in the scheme, by arranging the first forceps handle, the second forceps handle, the loop bar, the third chute, the second limiting pin, the guide sleeve and the second limiting tooth, when medical personnel hold the first forceps handle and the second forceps handle tightly, the guide sleeve is abutted and limited with the other side of the tibia or a steel plate covered on the surface of the tibia through the second limiting tooth, the friction force of the guide sleeve is increased through the second limiting tooth, the guide sleeve is prevented from deviating in the limiting process, the limiting stability of the guide sleeve is increased, the operation efficiency of the medical personnel is improved, the operation effect is ensured, meanwhile, the axis of the guide sleeve cannot deviate at an angle all the time in the moving process of the guide sleeve through the mode, accurate guide is provided for operation screws of the tibia with different sizes, and the application range of the device is improved;

through setting up spacing bulb, the arc board, first spacing tooth and spherical sleeve, wherein first spacing tooth is used for improving the frictional force of arc board, avoid spacing part to take place the skew when spacing shin bone one side, spacing part's stability has been improved, simultaneously through spacing bulb and spherical telescopic relation of connection, make the arc board can carry out the fixed of multi-angle through first spacing tooth, first spacing tooth has been increased and the contact scope on shin bone surface, the spacing adverse effect that causes of shin bone of surperficial unevenness to spacing part has been reduced, spacing part's convenience in use has been improved, adopt this limit design deeply, avoid spacing part to influence fracture in pressurization process and reset.

Through setting up first pincers handle, the second pincers handle, the rack, first stopper, first connecting rod, first spacing post, the fourth spacer pin, the guide ring, the spacing post of second, second connecting rod and first spring, make when the device presss from both sides tightly with shin bone or steel sheet, can be firmly restricted at the present position, carry out good guide effect with cooperation guiding component, when needs are relieved spacingly, only need medical personnel to extrude the second stopper with the finger and can relieve spacingly to the rack, and is simple in operation, and has automatic limit function, safety and reliability, medical personnel's operation efficiency has further been improved.

Drawings

FIG. 1 is a schematic perspective view of a compression navigation device for tibial plateau repositioning and fixation;

FIG. 2 is a schematic view of a partially cut-away perspective structure of a compression navigation device for tibial plateau repositioning and fixation;

fig. 3 is a schematic view of a partial enlarged perspective structure in fig. 2.

[ reference numerals ]

1. A first plier handle; 2. a second forceps handle; 3. a limiting ball head; 4. an arc plate; 5. a first limit tooth; 6. a limiting sleeve; 7. a loop bar; 8. a first chute; 9. a first limit pin; 10. a second chute; 11. a third chute; 12. a second limit pin; 13. a guide sleeve; 14. a second limit tooth; 15. a third limit pin; 16. a rack; 17. a fourth chute; 18. a fifth chute; 19. a first stopper; 20. a first link; 21. a first limit post; 22. a fourth limit pin; 23. a guide ring; 24. a second limit post; 25. a second link; 26. a second limiting block; 27. a first spring; 28. a stopper; 29. a first hand guard; 30. a second hand guard; 31. a kingpin; 32. a second spring; 33. a spherical sleeve.

Detailed Description

To make the technical problems, technical solutions and advantages of the present invention clearer, the following description is made in conjunction with the accompanying drawings and specific embodiments.

As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a pressurization navigation device for tibial plateau reposition fixation, which includes a first forceps handle 1, a second forceps handle 2 and a main pin 31, wherein the first forceps handle 1 and the second forceps handle 2 are hinged via the main pin 31, and the first forceps handle 1 and the second forceps handle 2 are provided with a limiting component, a guiding component and a locking component which are connected with each other.

As shown in fig. 1 and fig. 2, the guiding component includes a limiting sleeve 6 fixedly installed on one side of the first forceps handle 1, a loop bar 7 is slidably sleeved in the limiting sleeve 6, first sliding grooves 8 are respectively formed in two sides of the limiting sleeve 6, first limiting pins 9 are respectively fixedly installed on two sides of the loop bar 7, the first limiting pins 9 are slidably connected with the first sliding grooves 8, second sliding grooves 10 are respectively formed in two sides of the second forceps handle 2, third sliding grooves 11 are respectively formed in adjacent sides of the second forceps handle 2 where the second sliding grooves 10 are formed, the loop bar 7 is slidably connected with the second sliding grooves 10, second limiting pins 12 are respectively fixedly installed on two sides of the loop bar 7, the second limiting pins 12 are slidably connected with the third sliding grooves 11, a guiding sleeve 13 is fixedly connected to the outer side of the loop bar 7, and one end of the guiding sleeve 13 is provided with a plurality of second limiting teeth 14 in an annular array.

When the screw of fixed shin bone is guided to needs, it is spacing to one side of shin bone through spacing part, hold first pincers handle 1 and second pincers handle 2 tightly, make second pincers handle 2 pass through third spout 11 and drive second spacer pin 12 and remove, second spacer pin 12 drives guide sleeve 13 through loop bar 7 and removes, guide sleeve 13 is contradicted spacingly through second spacing tooth 14 and shin bone opposite side or its surperficial steel sheet that covers, increase guide sleeve 13's frictional force through second spacing tooth 14, avoid guide sleeve 13 to take place the skew at spacing in-process, increase guide sleeve 13's spacing stability, afterwards, guide sleeve 13 to the screw through guide sleeve 13, medical personnel's operation efficiency has been improved, operation effect has been guaranteed, make guide sleeve 13's axis can not take place the angle skew throughout at guide sleeve 13 removal in-process simultaneously through this mode, in order to provide accurate guide to the operation screw of the shin bone of different sizes, the application scope of this device has been improved.

The limiting component is used for limiting the surface of the tibia, the guide component is used for being matched with the limiting component to clamp the tibia and guide a screw for fixing the tibia, and the locking component is used for limiting the guide component and the limiting component after the tibia is clamped.

As shown in fig. 1 and 2, the limiting component includes a spherical sleeve 33 fixedly mounted at one end of the first forceps handle 1, a first cavity is formed in the spherical sleeve 33, a limiting ball head 3 is sleeved in the first cavity in a rotating manner, an arc plate 4 is fixedly mounted at one side of the limiting ball head 3, and a plurality of first limiting teeth 5 are arranged at one side of the arc plate 4 in an annular array.

Improve the frictional force of arc plate 4 through first spacing tooth 5, avoid spacing part to take place the skew when spacing carrying on shin bone one side, spacing part's stability has been improved, simultaneously through spacing bulb 3 and spherical sleeve 33's relation of connection, make arc plate 4 can carry out the fixed of multi-angle through first spacing tooth 5, first spacing tooth 5 and shin bone surface contactable scope has been increased, the adverse effect that the shin bone of surperficial unevenness led to the fact spacing of spacing part has been reduced, spacing part's convenience in use has been improved, adopt this limit design deeply, avoid spacing part to influence the fracture in pressurization in-process and reset.

As shown in fig. 2 and 3, a rack 16 is fixedly mounted on one side of the second forceps handle 2, a fourth sliding groove 17 is formed in one side of the rack 16, a second cavity is formed in one side of the first forceps handle 1, fifth sliding grooves 18 are formed in inner walls of two sides of the second cavity, a same third limiting pin 15 is fixedly mounted on inner walls of two sides of the second cavity, and the third limiting pin 15 is slidably connected with the fourth sliding groove 17. When the first clamp handle 1 and the second clamp handle 2 are tightly held, the second clamp handle 2 can drive the rack 16 to move, the fourth sliding groove 17 is limited by the third limiting pin 15, the rack 16 is prevented from being deviated in the moving process, and the moving stability of the rack 16 is ensured.

As shown in fig. 2 and 3, one side of the first forceps handle 1 is fixedly provided with a first hand guard 29, one side of the first hand guard 29 is provided with a first through hole, the locking component comprises a fourth limit pin 22 fixedly connected with the inner walls of two sides of the second cavity, the outer ring of the fourth limit pin 22 is rotatably sleeved with a guide ring 23, the inner side of the guide ring 23 is slidably sleeved with a first limit post 21 and a second limit post 24, one side of the first limit post 21 is fixedly connected with a first connecting rod 20, one end of the first connecting rod 20 is fixedly provided with a first limit block 19, the first limit block 19 is slidably connected with two fifth sliding grooves 18, one end of the second limit post 24 is fixedly connected with a second connecting rod 25 penetrating through the first hand guard 29, one end of the second connecting rod 25 is fixedly provided with a second limit block 26, one side of the second limit block 26 is fixedly connected with a first spring 27 sleeved on the outer side of the second connecting rod 25, one end of the first spring 27 is abutted against the first hand guard 29, and the first limit block 19 is clamped with the rack 16.

When medical personnel hold the first pincers handle 1 and the second pincers handle 2 tightly, the second pincers handle 2 drives the rack 16 to move, the moving rack 16 supports against the first limiting block 19, the second connecting rod 25 drives the first limiting block 21 to reset under the limitation of the fourth limiting pin 22 through the second limiting column 24 and the guide ring 23 under the elastic action of the first spring 27, the first limiting column 21 drives the first limiting block 19 to reset through the first connecting rod 20, the reverse movement of the rack 16 is avoided, and further, when the device is clamped with a tibia or a steel plate, the device can be firmly limited at the current position to match with a guide part to perform good guide effect.

As shown in fig. 2 and fig. 3, a stopper 28 is fixedly mounted on one side of the first forceps handle 1, the stopper 28 is located in the first hand guard 29, and a shielding effect is provided by the stopper 28 arranged in the first hand guard 29, so that the situation that when a medical worker uses the device to clamp a tibia, the medical worker mistakenly touches the second stopper 26, and further the limit failure of the locking component is caused, and the limit function of the locking component is further guaranteed.

As shown in fig. 1 and 2, a second hand guard 30 is fixedly mounted on one side of the first forceps handle 1, the second forceps handle 2, the stop 28, the first hand guard 29, the first forceps handle 1 and the second hand guard 30 are made of cemented carbide which is integrally formed, so that the structural strength of the device can be improved, and the safety of an operation is guaranteed.

As shown in fig. 1 and fig. 2, a second spring 32 is fixedly mounted on one side of the first forceps handle 1, one end of the second spring 32 is fixedly connected with one side of the second forceps handle 2, and when the medical staff contacts the limit of the locking component through the second limit block 26, the first forceps handle 1 and the second forceps handle 2 automatically reset under the action of the second spring 32, so as to reduce the operation load of the medical staff.

The utility model provides a technical scheme, through setting up first pincers handle, second pincers handle, the loop bar, the third spout, the second spacer pin, guide sleeve and second spacing tooth, when making medical personnel grip first pincers handle and second pincers handle, guide sleeve carries out conflict spacing through second spacing tooth and shin bone opposite side or its surface covered steel sheet, increase guide sleeve's frictional force through second spacing tooth, avoid guide sleeve to skew in spacing process, increase guide sleeve's spacing stability, medical personnel's operation efficiency has been improved, the operation effect has been guaranteed, make guide sleeve's axis can not take place the angle skew all the time in guide sleeve removal process simultaneously through this mode, with the operation screw to the shin bone of different sizes provides accurate guide, the application scope of this device has been improved;

the limiting ball head, the arc plate, the first limiting tooth and the spherical sleeve are arranged, wherein the first limiting tooth is used for improving the friction force of the arc plate, the limiting component is prevented from deviating when limiting is carried out on one side of the tibia, the stability of the limiting component is improved, meanwhile, the arc plate can be fixed at multiple angles through the first limiting tooth through the connection relation of the limiting ball head and the spherical sleeve, the contactable range of the first limiting tooth and the surface of the tibia is increased, the adverse effect of the tibia with uneven surface on limiting of the limiting component is reduced, the use convenience of the limiting component is improved, and the depth limiting design is adopted, so that the fracture resetting is prevented from being influenced in the pressurizing process of the limiting component;

through setting up first pincers handle, the second pincers handle, the rack, first stopper, first connecting rod, first spacing post, the fourth spacer pin, the guide ring, the spacing post of second, second connecting rod and first spring, make when the device presss from both sides tightly with shin bone or steel sheet, can be firmly restricted at the present position, carry out good guide effect with cooperation guiding component, when needs are relieved spacingly, only need medical personnel to extrude the second stopper with the finger and can relieve spacingly to the rack, and is simple in operation, and has automatic limit function, safety and reliability, medical personnel's operation efficiency has further been improved.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. A tibial plateau repositioning and fixing compression navigation device, comprising:

the clamp comprises a first clamp handle, a second clamp handle and a main pin, wherein the first clamp handle and the second clamp handle are hinged through the main pin, and a limiting part, a guiding part and a locking part which are connected are arranged on the first clamp handle and the second clamp handle;

the guide component comprises a limiting sleeve fixedly mounted on one side of the first clamp handle, a loop bar is sleeved in the limiting sleeve in a sliding mode, first sliding grooves are formed in two sides of the limiting sleeve, first limiting pins are fixedly mounted on two sides of the loop bar, the first limiting pins are connected with the first sliding grooves in a sliding mode, second sliding grooves are formed in two sides of the second clamp handle, third sliding grooves are formed in the adjacent sides of the second sliding grooves of the second clamp handle, the loop bar is connected with the second sliding grooves in a sliding mode, second limiting pins are fixedly mounted on two sides of the loop bar, the second limiting pins are connected with the third sliding grooves in a sliding mode, a guide sleeve is fixedly sleeved on the outer side of the loop bar, and a plurality of second limiting teeth are arranged at one end of the guide sleeve in an annular array;

the limiting component is used for limiting the surface of the tibia, the guide component is used for being matched with the limiting component to clamp the tibia and guide a screw for fixing the tibia, and the locking component is used for limiting the guide component and the limiting component after the tibia is clamped.

2. The tibial plateau resetting and fixing pressurization navigation device according to claim 1, wherein the limiting component comprises a spherical sleeve fixedly mounted at one end of the first forceps handle, a first cavity is formed in the spherical sleeve, a limiting ball head is rotatably sleeved in the first cavity, an arc plate is fixedly mounted at one side of the limiting ball head, a plurality of first limiting teeth are arranged in an annular array at one side of the arc plate, a rack is fixedly mounted at one side of the second forceps handle, a fourth chute is formed at one side of the rack, a first hand guard is fixedly mounted at one side of the first forceps handle, a first through hole is formed at one side of the first hand guard, a second cavity is formed at one side of the first forceps handle, fifth chutes are formed in inner walls of two sides of the second cavity, the same third limiting pin is fixedly mounted at inner walls of two sides of the second cavity, and the third limiting pin is slidably connected with the fourth chute.

3. The tibial plateau resets fixed pressurization navigation head of claim 2, characterized in that, the locking part include with second cavity both sides inner wall fixed connection's fourth spacer pin, the outer lane of fourth spacer pin rotates and has cup jointed the guide ring, the inboard slip of guide ring has cup jointed first spacing post and the spacing post of second, the first connecting rod of one side fixedly connected with of first spacing post, the one end fixed mounting of first connecting rod has first stopper, first stopper and two fifth spout sliding connection, the one end fixedly connected with of the spacing post of second runs through the second connecting rod of first hand protector, the one end fixed mounting of second connecting rod has the second stopper, one side fixedly connected with cover of second stopper is established the first spring in the second connecting rod outside, the one end of first spring with first conflict hand protector, first stopper with rack joint.

4. The tibial plateau repositioning fixing compression guidance device of claim 2, wherein a stop is fixedly mounted on one side of the first clamp handle, and the stop is located in the first hand guard.

5. The tibial plateau resetting and fixing pressure navigation device as claimed in claim 4, wherein a second hand guard is fixedly mounted on one side of the first forceps handle, and the second forceps handle, the stop block, the first hand guard, and the first forceps handle and the second hand guard are made of integrally formed hard alloy respectively.

6. The tibial plateau repositioning fixing pressure navigation device according to claim 1, wherein a second spring is fixedly mounted on one side of the first forceps handle, and one end of the second spring is fixedly connected with one side of the second forceps handle.

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