CN112914673B - Integrated patella osteotomy device - Google Patents

Abstract

The utility model relates to an integral type kneecap osteotomy ware, relate to medical instrument's field, including the centre gripping pincers and can dismantle the osteotomy pincers of connection on the centre gripping pincers, the centre gripping pincers include first pole subassembly and second pole subassembly, first pole subassembly and second pole subassembly middle part are articulated, first pole subassembly one end rigid coupling has first fixed plate, the osteotomy pincers can be dismantled through coupling assembling and connect in second pole subassembly one end, the osteotomy pincers include the fixed strip, sliding connection is at the sheath of osteotomy locating piece and rigid coupling of fixed strip one end towards first pole subassembly one end, the fixed strip has the second fixed plate towards one side rigid coupling of first pole subassembly, it offers confession osteotome male tool bore to run through the relative both sides of sheath, the tool bore runs through the direction unanimously with fixed strip length direction. The patella cutting device has the advantages that the operation of a doctor can be conveniently carried out, the doctor can cut patella with different thicknesses through the osteotomy device, the operation is very convenient, and the operation time is shortened.

Description

Integrated patella osteotomy device

Technical Field

The present application relates to the field of medical devices, and more particularly, to an integrated patella osteotomy device.

Background

With the aging population and the increase of athletic injuries, the incidence rate of knee osteoarthritis is higher and higher, and the patella treatment is related to the clinical treatment of both patellofemoral joint replacement and total knee joint replacement.

When the patella is treated and replaced, firstly, the patella needs to be clamped and cut through the patella osteotomy forceps, the diseased patella is cut off, and the proper thickness of the patella is reserved. Then punch on the patella that remains, install the erection column on the false body in the hole on the patella again to carry out the centre gripping through centre gripping pincers to false body and patella, make fixed more firm of false body and patella, thereby accomplish the replacement operation of patella.

To the correlation technique among the above-mentioned, the inventor thinks at the operation in-process, when carrying out the in-process of intercepting to the patella, can only intercept the patella of fixed thickness, can't intercept the patella of different thickness according to the degree of pathological change, uses two operation tool in proper order, and when carrying out the intercepting to patella thickness, can only intercept the patella of fixed thickness, when carrying out the intercepting to the patella of different thickness, need change different osteotomy pincers, the operation is very inconvenient for the operation time extension.

Disclosure of Invention

In order to facilitate the operation of doctors, the doctors can cut the patella with different thicknesses through one osteotomy forceps, the operation time is shortened, and the application provides the integrated patella osteotomy device.

The application provides an integral type patella osteotomy ware adopts following technical scheme:

the integrated patella osteotomy device comprises a holding forceps and an osteotomy forceps detachably connected to the holding forceps, wherein the holding forceps comprises a first rod component and a second rod component, the middle parts of the first rod component and the second rod component are hinged, one end of the first rod component is fixedly connected with a first fixing plate, a connecting component is arranged between the second rod component and the osteotomy forceps, the first fixing plate and the osteotomy forceps are positioned at the same side of a hinge shaft of the first rod component and the second rod component, the osteotomy forceps is detachably connected to one end of the second rod component through the connecting component, the osteotomy forceps comprises a fixing strip, an osteotomy positioning block slidably connected to one end of the fixing strip and a knife sheath fixedly connected to one end of the osteotomy positioning block, which faces towards the first rod component, a second fixing plate is fixedly connected to one side of the fixing strip, and when the osteotomy forceps is installed at one end of the second rod component, thereby the first fixed plate with the second fixed plate butt carries out the centre gripping to the patella, runs through the relative both sides of sheath and offers and supplies the inserted sword hole of osteotome, the sword hole direction of running through with fixed strip length direction is unanimous.

Through adopting above-mentioned technical scheme, during the use, can directly install osteotomy pincers at second pole subassembly one end through coupling assembling, during the osteotomy, can carry out the centre gripping to the patella through second fixed plate and first pole subassembly tip, then insert the osteotome from the sword hole and just can carry out the intercepting to the patella of centre gripping between second fixed plate and first pole subassembly. When the patella of different thickness of needs intercepting, can operate the osteotomy locating piece and slide for the fixed strip, the osteotomy locating piece also drives the knife sheath and slides to the position of the knife hole of seting up on the knife sheath changes, and then changes the distance between knife hole and the second fixed plate, realizes the thickness different to the patella intercepting, just can intercept the patella of different thickness through an osteotomy pincers, and it is more convenient to operate, has improved operation efficiency greatly, shortens operation time.

Optionally, the first rod assembly includes a first mounting plate and a first clamping rod disposed at one end of the first mounting plate; the second pole subassembly includes the second mounting panel and sets up the second supporting rod of second mounting panel one end, first mounting panel with the second mounting panel middle part is articulated, first fixed plate rigid coupling is in first supporting rod one end, coupling assembling sets up second supporting rod one end works as first mounting panel and/or when the second mounting panel rotates around its articulated shaft between them, the osteotomy pincers with be close to relatively between the first fixed plate or keep away from to the realization is to the centre gripping of patella and is unclamped.

Through adopting above-mentioned technical scheme, when rotating around articulated shaft between them through operation first mounting panel and/or second mounting panel, first mounting panel and second mounting panel will drive first supporting rod and second supporting rod and rotate to drive osteotomy forceps and first fixed plate and be close to relatively or keep away from relatively, thereby realize the centre gripping or loosen the patella.

Optionally, first mounting panel one end with first supporting rod middle part is slided articulatedly, second mounting panel one end with second supporting rod middle part is slided articulatedly, first supporting rod is kept away from the one end of first fixed plate with the second mounting panel is kept away from the one end of second supporting rod is articulated, the second supporting rod is kept away from coupling assembling's one end with first mounting panel is kept away from the one end of first supporting rod is articulated.

Through adopting above-mentioned technical scheme, when first mounting panel and/or second mounting panel rotated around articulated shaft between them, first mounting panel and second mounting panel were also simultaneously through first supporting rod and second clamping rod tip, drove first supporting rod and second supporting rod around the articulated shaft with first mounting panel and second mounting panel and rotate to drive first fixed plate and connect osteotomy forceps or the relative or back-to-back motion of fixer on the second supporting rod through coupling assembling. At this time, the end of the first mounting plate also slides in the longitudinal direction of the first clamping bar, and the end of the second mounting plate also slides in the longitudinal direction of the second clamping bar.

Optionally, the first mounting panel is kept away from the one end rigid coupling of first supporting rod has first action bars, the second mounting panel is kept away from the one end rigid coupling of second supporting rod has the second action bars, first action bars with the second action bars forms the handle jointly.

Through adopting above-mentioned technical scheme, through the operating handle for first action bars and second action bars are close to relatively or keep away from each other, just can drive first fixed plate and osteotomy forceps or fixer and be close to relatively or keep away from each other.

Optionally, be provided with fixedly between the first supporting rod and the second supporting rod retaining member of distance between the first supporting rod and the second supporting rod, the retaining member includes the rigid coupling and is in first supporting rod orientation the threaded rod of second supporting rod one side, the threaded rod runs through the relative both sides of second supporting rod and with second supporting rod sliding fit, threaded connection has turning handle on the threaded rod, turning handle is located the second supporting rod is kept away from one side of first supporting rod.

Through adopting above-mentioned technical scheme, when first fixed plate and osteotomy forceps or fixer centre gripping kneecap carry out the operation, directly revolve wrong twist handle, twist handle will rotate on the threaded rod, and butt second supporting rod is close to the second supporting rod, until with the centre gripping of second supporting rod between kneecap and twist handle, just can fix the distance between first supporting rod and the second supporting rod, need not the doctor and exert oneself the distance between fixed first supporting rod of centre gripping and the second supporting rod, the doctor of being convenient for carries out subsequent operation more, it is more convenient laborsaving to operate.

Optionally, run through the confession has been seted up at the relative both ends of osteotomy locating piece the draw-in groove of fixed strip one end embedding, be provided with the drive between osteotomy locating piece and the fixed strip the osteotomy locating piece is in gliding slider on the fixed strip.

Through adopting above-mentioned technical scheme, the fixed strip is located the draw-in groove, thereby just can drive the position that cuts bone locating piece slip on the fixed strip and change the sword hole through operating the slider to adjust the position of cutting on the patella.

Optionally, the slider includes the rigid coupling and is in the osteotomy locating piece is kept away from the installation piece of sword hole one end, is worn to establish dead lever and rigid coupling on the installation piece are in the dead lever orientation the regulation pole of osteotomy locating piece one end, it is greater than to adjust the pole diameter the diameter of fixed bar, the rigid coupling has adjustment handle on the dead lever, adjustment handle is located the installation piece is kept away from one side of osteotomy locating piece, the dead lever with fixed strip threaded connection.

Through adopting above-mentioned technical scheme, the installation piece is by the centre gripping between adjustment handle and regulation pole, and when rotating adjustment handle, adjustment handle will drive the regulation pole and rotate in the fixed strip to adjust the distance between adjustment handle and the solid strip, adjustment handle also drives the motion of cutting the bone locating piece through the installation piece simultaneously, realizes cutting the sliding connection of bone locating piece and fixed strip, thereby changes the position in sword hole.

Optionally, coupling assembling includes the rigid coupling is in the fixed strip is kept away from the first erection column of osteotomy locating piece one end, and second supporting rod is close to the confession is seted up to the one end of first fixed plate the mounting groove of first erection column embedding.

Through adopting above-mentioned technical scheme, through with first erection column insert the mounting groove, can realize installing the osteotomy locating piece on second supporting rod, it is very convenient to install and dismantle.

Optionally, coupling assembling still includes the rigid coupling and is in the supplementary piece of second supporting rod one end, supplementary piece one end set up with the perpendicular supplementary groove that communicates of mounting groove, sliding connection has the butt pole in the supplementary groove, set up the confession on the first erection column lateral wall the first groove of dodging that the butt pole slided, set up the confession on the butt pole outer wall the second of first erection column embedding dodges the groove.

Through adopting above-mentioned technical scheme, when the first erection column of installation, the position of direct slip butt pole in supplementary groove for the groove slides to mounting groove department is dodged to the second, and at this moment, directly just can insert the mounting groove with first erection column in, and the lateral wall of first erection column dodges the groove from the second and slides. When first erection column was installed in the mounting groove, the groove intercommunication was dodged to the first groove of dodging and second, and the position of butt-joint pole in supplementary groove is slided this moment, and the butt-joint pole lateral wall just can be followed the first groove of dodging and slided for the butt-joint pole imbeds in the first groove of dodging, thereby fixes the position of first erection column in the mounting groove.

Optionally, the clamp comprises a fixing device detachably connected to the clamping pincers, the fixing device comprises an installation rod and a third fixing plate fixedly connected to one end of the installation rod, the fixing device is detachably connected to the clamping pincers through the connecting assembly, and the connecting assembly comprises a second installation column fixedly connected to one end, far away from the third fixing plate, of the installation rod.

Through adopting above-mentioned technical scheme, after finishing the patella cutting through osteotomy pincers, just need install the patellar prosthesis on the patella, then take off osteotomy pincers again to install the fixer on the centre gripping pincers, just can carry out the centre gripping through the fixer to the patellar prosthesis and fix, can realize the interception of patella and to the fixed of patellar prosthesis through an apparatus, it is more convenient to operate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sliding fit of the fixed block and the osteotomy positioning block can adjust the position of the osteotomy positioning block on the fixed block, thereby adjusting the positions of the sheath and the knife hole formed on the sheath, changing the position of cutting on the patella, realizing the cutting of the patella with different thicknesses by one osteotomy forceps, being more convenient to operate and greatly shortening the operation time;

2. the locking piece is arranged, so that after the patella is clamped by the first fixing plate and the second fixing plate, the positions of the first clamping rod and the second clamping rod can be directly fixed by the locking piece, a doctor does not need to apply force all the time to fix the positions of the first clamping rod and the second clamping rod, and the doctor can conveniently perform subsequent operation;

3. the connecting assembly is arranged to fix the osteotome forceps or the fixer on the second clamping rod, the assembly and disassembly are very convenient, the patella can be cut and fixed by one instrument, and the operation is more convenient and flexible.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic sectional view of an osteotomy forceps constructed to embody the osteotomy forceps.

Fig. 3 is a schematic view showing a state in which the first mounting post is inserted to embody the structure of the connecting assembly.

Fig. 4 is a schematic structural view of the abutting rod clamped in the first avoiding groove to embody the structure of the connecting component.

FIG. 5 is a schematic view showing a state in which the holder is connected to the grip.

Fig. 6 is a schematic view of the holder structure.

Description of reference numerals: 1. a holding clamp; 11. a first rod assembly; 111. a first mounting plate; 112. a first clamping rod; 113. a first slide bar; 114. a first chute; 12. a second rod assembly; 121. a second mounting plate; 122. a second clamping rod; 1221. mounting grooves; 123. a second slide bar; 124. a second chute; 13. a first fixing plate; 14. a handle; 141. a first operating lever; 142. a second operating lever; 2. osteotomy forceps; 21. a fixing strip; 211. a limiting groove; 22. a bone cutting positioning block; 221. a card slot; 23. a sheath; 231. a knife hole; 24. a second fixing plate; 25. a slider; 251. mounting blocks; 252. fixing the rod; 253. adjusting a rod; 254. an adjusting handle; 255. a threaded hole; 256. a first scale mark; 257. a second scale mark; 3. a holder; 31. mounting a rod; 32. a third fixing plate; 4. a connecting assembly; 41. a first mounting post; 411. a first avoidance slot; 42. an auxiliary block; 421. an auxiliary groove; 43. a butting rod; 431. a second avoidance slot; 44. an operating handle; 45. a fixing ring; 46. a spring; 47. a second mounting post; 471. a third avoidance slot; 48. a snap ring; 5. a locking member; 51. a threaded rod; 52. rotating the handle; 53. a plugging cap; 6. a straightedge; 61. a containing groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses integral type patella osteotomy ware. Referring to fig. 1 and 2, the integrated patella osteotome includes a clamping forceps 1 and an osteotomy forceps 2 detachably coupled to the clamping forceps 1. Be provided with coupling assembling 4 between centre gripping pincers 1 and osteotomy pincers 2, can realize the dismantlement of centre gripping pincers 1 and osteotomy pincers 2 through coupling assembling 4 and connect.

The holding forceps 1 comprises a first rod assembly 11 and a second rod assembly 12, the first rod assembly 11 and the second rod assembly 12 being articulated in the middle. Specifically, the first rod assembly 11 includes a first mounting plate 111 and a first clamping rod 112 disposed at one end of the first mounting plate 111, the first mounting plate 111 is integrally U-shaped, the first clamping rod 112 is disposed at an opening end of the first mounting plate 111, and a first fixing plate 13 is fixedly connected to one end of the first clamping rod 112. The second rod assembly 12 comprises a second mounting plate 121 and a second clamping rod 122 arranged at one end of the second mounting plate 121, the second mounting plate 121 is integrally U-shaped, the middle parts of the first mounting plate 111 and the second mounting plate 121 are hinged, the second clamping rod 122 is positioned at the open end of the second mounting plate 121, the osteotomy forceps 2 is mounted at one end of the second clamping rod 122 through the connecting assembly 4, and the first fixing plate 13 and the osteotomy forceps 2 are both positioned at the same side of the hinged shaft of the first mounting plate 111 and the second mounting plate 121 and are used for clamping the patella. When the first mounting plate 111 or the second mounting plate 121 is operated to rotate around the hinge axis of the first mounting plate and the second mounting plate, the first fixing plate 13 and the osteotomy forceps 2 are relatively close to each other or away from each other, so that the patella can be clamped and loosened.

The open end of the first mounting plate 111 is slidably hinged to the first clamping rod 112, specifically, a first sliding rod 113 is fixedly connected to the open end of the first mounting plate 111, the first sliding rod 113 is fixedly connected to two opposite side walls of the first mounting plate 111, a first sliding chute 114 for sliding the first sliding rod 113 is formed in the first clamping rod 112 along the length direction of the first clamping rod, one end of the first clamping rod 112, which is far away from the first fixing plate 13, is hinged to two opposite side walls of the second mounting plate 121, and the hinge point is located at one end of the second mounting plate 121, which is close to the closed end of the second mounting plate 121. A second sliding rod 123 is fixedly connected to the open end of the second mounting plate 121, the second sliding rod 123 is fixedly connected to two opposite side walls of the second mounting plate 121, a second sliding chute 124 for the second sliding rod 123 to slide is formed in the second clamping rod 122 along the length direction of the second clamping rod, one end of the second clamping rod 122 is connected with the osteotomy forceps 2 through the connecting assembly 4, the other end of the second clamping rod is hinged to the two opposite side walls of the first mounting plate 111, and the hinge point is located at one end, close to the closed end, of the first mounting plate 111. When the first mounting plate 111 and/or the second mounting plate 121 are/is operated to rotate around the hinge axis of the first mounting plate 111 and the second mounting plate 121, the first mounting plate 111 drives the second clamping rod 122 to rotate around the second sliding rod 123 through the hinge axis between the first mounting plate 111 and the second clamping rod 122, and at this time, the second sliding rod 123 also slides in the second sliding slot 124; the second mounting plate 121 also drives the first clamping rod 112 to rotate around the first sliding rod 113 through the hinge shaft of the second mounting plate 121 and the first clamping rod 112, at this time, the first sliding rod 113 also slides in the first sliding chute 114, so that when the first mounting plate 111 and/or the second mounting plate 121 are operated to rotate around the hinge shafts of the first mounting plate and the second mounting plate, the first mounting plate 111 and the second mounting plate 121 respectively drive the first clamping rod 112 and the second clamping rod 122 to rotate, and the patella is clamped or loosened by the osteotomy forceps 2 and the first fixing plate 13. And when the first mounting plate 111 and the second mounting plate 121 rotate around the hinge point of the two, the first clamping rod 112 and the second clamping rod 122 are always in a parallel state.

Meanwhile, a first operating rod 141 is fixedly connected to one end of the first mounting plate 111, which is far away from the first clamping rod 112, a second operating rod 142 is fixedly connected to one end of the second mounting plate 121, which is far away from the second clamping rod 122, and the first operating rod 141 and the second operating rod 142 jointly form the handle 14, so that people can conveniently operate the handle 14 to clamp or release the patella. When people operate the first operating rod 141 and the second operating rod 142 to be close to or far away from each other, the first mounting plate 111 and the second mounting plate 121 drive the osteotomy forceps 2 and the first fixing plate 13 to be close to or far away from each other, so that the patella can be clamped and loosened, and the operation is more convenient.

Referring to fig. 1, in order to facilitate the osteotomy forceps 2 and the first fixing plate 13 to clamp the patella, and to facilitate the subsequent surgical operation performed by the surgeon, a locking member 5 for fixing the distance between the first clamping rod 112 and the second clamping rod 122 is disposed between the first clamping rod 112 and the second clamping rod 122.

Retaining member 5 includes the threaded rod 51 of rigid coupling in first clamping bar 112 towards second clamping bar 122 one side, threaded rod 51 run through the relative both sides of second clamping bar 122 and with second clamping bar 122 sliding fit, threaded connection has turning handle 52 on threaded rod 51, turning handle 52 is located the one side that first clamping bar 112 was kept away from to second clamping bar 122, through adjusting the position of turning handle 52 on threaded rod 51, just can fix the farthest distance between first clamping bar 112 and the second clamping bar 122. When the patella is clamped by the osteotome forceps 2 and the first fixing plate 13, the positions of the first clamping rod 112 and the second clamping rod 122 can be fixed by rotating the rotary handle 52 to abut against one side of the second clamping rod 122 far away from the first clamping rod 112, so that the patella can be firmly clamped by the osteotome forceps 2 and the first fixing plate 13, the real-time force application handle 14 of a doctor is not needed, and the operation is more convenient and labor-saving.

Wherein, there is stifled cap 53 at threaded connection of the threaded rod 51's one end of keeping away from first clamping rod 112, and stifled cap 53 can be fixed twist grip 52 between stifled cap 53 and second clamping rod 122, avoids when rotatory twist grip 52, twist grip 52 from the threaded rod 51 keep away from the one end landing of first clamping rod 112.

Meanwhile, in order to clearly recognize the opening and closing degree between the first clamping rod 112 and the second clamping rod 122, a straight ruler 6 is fixedly connected to one side of the first clamping rod 112, the length direction of the straight ruler 6 is perpendicular to the length directions of the first clamping rod 112 and the second clamping rod 122, a containing groove 61 for embedding the straight ruler 6 is formed in one side of the second clamping rod 122, one end of the straight ruler 6 is fixedly connected to the first clamping rod 112, the other end of the straight ruler 6 is located in the containing groove 61, and when the distance between the first clamping rod 112 and the second clamping rod 122 is changed, the straight ruler 6 also slides in the containing groove 61, so that the distance between the first clamping rod 112 and the second clamping rod 122 can be visually measured through the straight ruler 6.

Referring to fig. 1 and 2, the osteotomy forceps 2 includes a fixing strip 21, an osteotomy positioning block 22 slidably connected to one end of the fixing strip 21, and a sheath 23 integrally and fixedly connected to one end of the osteotomy positioning block 22, the sheath 23 is located at one end of the osteotomy positioning block 22 facing the first clamping rod 112, a second fixing plate 24 is further fixedly connected to one side of the fixing strip 21 facing the first clamping rod 112, and when the osteotomy forceps 2 is mounted on the second clamping rod 122, the first fixing plate 13 and the second fixing plate 24 are abutted to each other to clamp the patella. The two opposite sides of the sheath 23 are provided with knife holes 231 for inserting the osteotome, and the knife holes 231 are provided in the same direction as the length direction of the positioning strips. When the first and second fixing plates 13 and 24 clamp the patella, the cutter hole 231 is located between the first and second fixing plates 13 and 24, and then the osteotome is inserted into the cutter hole 231, so that the osteotome can directly perform the cutting operation on the patella clamped in the first and second fixing plates 13 and 24. When the position of the osteotomy positioning block on the fixing strip 21 is slid, the position of the knife sheath 23 can be changed, so that the position of the knife for cutting on the patella is changed, and the patella can be cut in different thicknesses.

Referring to fig. 2, two opposite ends of the osteotomy positioning block 22 are provided with a slot 221 for embedding the fixing strip 21, the slot 221 penetrates through one side of the osteotomy positioning block 22 facing the fixing strip 21 for embedding the fixing strip 21, the position of the fixing strip 21 in the slot 221 can be changed by operating the osteotomy positioning block 22 to slide on the fixing strip 21, so as to change the position of the osteotomy positioning block 22, and meanwhile, a sliding part 25 for driving the osteotomy positioning block 22 to slide on the fixing strip 21 is arranged between the osteotomy positioning block 22 and the fixing strip 21.

The sliding member 25 includes a mounting block 251 fixedly connected to an end of the osteotomy positioning block 22 away from the knife hole 231 by a screw, a fixing rod 252 passing through the mounting block 251, an adjusting rod 253 integrally and fixedly connected to an end of the fixing rod 252 facing the knife hole 231, and an adjusting handle 254 fixedly connected to an end of the fixing rod 252 away from the adjusting rod 253, wherein a diameter of the adjusting rod 253 is larger than a diameter of the fixing rod 252, and the adjusting handle 254 and the adjusting rod 253 respectively abut against opposite sides of the mounting block 251, thereby fixing a position of the mounting block 251 on the fixing rod 252. And the two opposite sides penetrating through the fixing bar 21 are provided with thread matching threaded holes 255 of the adjusting rod 253, the adjusting rod 253 can be screwed into the threaded holes 255 to be in threaded connection with the fixing bar 21, the adjusting handle 254 is rotated, the adjusting handle 254 drives the adjusting rod 253 to rotate through the fixing rod 252, so that the adjusting rod 253 is driven to be screwed into the threaded holes 255 of the fixing bar 21 or the adjusting rod 253 is driven to be screwed out of the threaded holes 255, the mounting block 251 is driven to move towards the direction close to the first clamping rod 112 or far away from the first clamping rod 112, at the moment, the fixing bar 21 also slides in the clamping groove 221, and the relative position between the osteotomy positioning block 22 and the fixing bar 21 is changed.

Referring to fig. 1, in order to facilitate a doctor to visually see the position of the osteotomy positioning block 22 on the fixing strip 21, a first scale line 256 is disposed on the side wall of the fixing strip 21, a plurality of second scale lines 257 are disposed on the osteotomy positioning block 22 along the length direction thereof, and the position between the osteotomy positioning block 22 and the fixing strip 21 can be known through the positions of the first scale line 256 and the second scale lines 257, so that the doctor can adjust the position of the osteotomy positioning block 22 on the fixing strip 21 according to the size of the patella to be cut. The first graduation mark 256 and the second graduation mark 257 may be cut from the osteotomy positioning block 22 and the fixing bar 21, or may be marked by a marker pen or the like.

Referring to fig. 2 and 3, the connection assembly 4 includes a first mounting post 41 fixedly connected to one end of the fixing strip 21 far away from the osteotomy positioning block 22, a mounting groove 1221 for the first mounting post 41 to be embedded is formed at one end of the second clamping rod 122 near the first fixing plate 13, and the first mounting post 41 is inserted into the mounting groove 1221, so that the osteotomy forceps 2 and the second clamping rod 122 can be connected. Wherein, offer the spacing groove 211 that supplies the embedding of second supporting rod 122 at the one end of fixed strip 21 orientation first erection column 41, when inserting first erection column 41 in mounting groove 1221, during second supporting rod 122 also imbeds spacing groove 211 to fix the relative position of second supporting rod 122 and first erection column 41, accomplish osteotomy forceps 2's installation work.

Referring to fig. 3 and 4, in order to fix the position of the first mounting post 41 in the mounting groove 1221, the first mounting post 41 is prevented from slipping out of the mounting groove 1221 under the action of external force, thereby affecting the normal patella resectioning operation. Coupling assembling 4 still includes the auxiliary block 42 of rigid coupling in second clamping rod 122 one side, offers the auxiliary groove 421 with the perpendicular intercommunication of mounting groove 1221 in auxiliary block 42 one end, and sliding connection has the butt pole 43 in auxiliary groove 421, offers the annular and first erection column 41 joint complex second on the outer wall of butt pole 43 and dodges groove 431, offers the first groove 411 of dodging that supplies the embedding of butt pole 43 on the lateral wall of first erection column 41. Under the normality, butt pole 43 is located auxiliary tank 421, and second dodge groove 431 is located mounting groove 1221 one side and communicates with mounting groove 1221, and when inserting first erection column 41 in mounting groove 1221, first erection column 41 lateral wall will follow the second and dodge groove 431 and slide towards one side of mounting groove 1221 and pass, and when inserting first erection column 41 in mounting groove 1221 after, first dodge groove 411 also slides to second dodge groove 431 department. Then, the abutting rod 43 is operated to slide in the auxiliary groove 421, the abutting rod 43 will slide in the first avoiding groove 411, and the outer wall of the abutting rod 43 is clamped in the first avoiding groove 411, so that the position of the first installation column 41 in the installation groove 1221 is fixed through the abutting rod 43, and the first installation column 41 is prevented from sliding out of the installation groove 1221 under the action of external force.

In order to facilitate the operation of sliding the abutting rod 43 in the auxiliary groove 421, an operating handle 44 is fixedly connected to one end of the abutting rod 43 located outside the auxiliary groove 421, and the abutting rod 43 can be driven to slide in the auxiliary groove 421 directly through the operating handle 44, so that the operation is more convenient.

Meanwhile, in order to avoid under the action of external force, the abutting rod 43 slides in the auxiliary groove 421, so that the second avoiding groove 431 slides to the position communicated with the first avoiding groove 411, the abutting rod 43 cannot be limited, the auxiliary groove 421 is fixedly connected with the fixing ring 45, the fixing ring 45 is sleeved on the abutting rod 43 and is positioned on one side of the first avoiding groove 411 facing the handle 44, the abutting rod 43 is further sleeved with the spring 46, the spring 46 is positioned between the fixing ring 45 and the operating handle 44, and the end of the abutting rod 43, which is far away from the handle 44, is further fixedly connected with the clamping ring 48. When the first installation column 41 needs to be installed in the installation groove 1221, the operation handle 44 is directly pushed, and the operation handle 44 can drive the abutting rod 43 to slide in the auxiliary groove 421 until the handle 44 abuts on the auxiliary block 42, and at this time, the second avoiding groove 431 is communicated with the installation groove 1221. The staff is direct to insert first erection column 41 in mounting groove 1221, the first groove 431 of dodging 411 also communicates with the second groove of dodging this moment, then loosen the power of applying on operating handle 44, under spring 46 spring action, will promote the direction motion of butt rod 43 to keeping away from supplementary groove 421 blind end, until snap ring 48 lateral wall butt on solid fixed ring 45, butt rod 43 lateral wall also blocks at the first groove 411 of dodging this moment, thereby fix the position of first erection column 41 in mounting groove 1221, it is more convenient to operate.

Referring to fig. 5, the second clamping rod 122 is further detachably connected to a fixer 3 via a connecting assembly 4, and the fixer 3 includes a mounting rod 31 and a third fixing plate 32 fixed to one end of the mounting rod 31. The fixer 3 is also detachably connected to the second clamping rod 122 through the connecting assembly 4, and when the fixer 3 is mounted on the second clamping rod 122 through the connecting assembly 4, the first fixing plate 13 and the third fixing plate 32 are abutted to each other to clamp and fix the patella.

Referring to fig. 5 and 6, the connecting assembly 4 further includes a second mounting post 47 fixedly connected to one end of the mounting rod 31 far away from the third fixing plate 32, and a third avoiding groove 471 is further formed in a side wall of the second mounting post 47. The connection relationship between the second mounting post 47 and the abutting rod 43 is the same as the connection manner between the first mounting post 41 and the abutting rod 43, and the description thereof is not repeated. Wherein the girth of second erection column 47 is less than the girth of erection rod 31, when needs install fixer 3 on centre gripping pincers 1, directly insert second erection column 47 in mounting groove 1221, and when second erection column 47 was installed in mounting groove 1221, the one end butt that mounting groove 1221 was seted up with second supporting rod 122 to the one end of second erection column 47 orientation installation rod 31, then fix the position of second erection column 47 in mounting groove 1221 through butt pole 43, can realize the installation of fixer 3. When the bone cutting forceps are used, a worker can select to install the first installation column 41 on the osteotomy forceps 2 in the installation groove 1221 or install the second installation column 47 on the fixator 3 in the installation groove 1221 according to needs, and the operation is more flexible.

The implementation principle of the integrated patella osteotomy device provided by the embodiment of the application is as follows: when the patella needs to be cut, the first mounting post 41 is installed in the installation groove 1221, and the position of the first mounting post 41 in the installation groove 1221 is fixed by the abutting rod 43. Then the adjusting handle 254 is rotated to adjust the position of the osteotomy positioning block 22 on the fixing strip 21 according to the size of the patella to be cut so as to meet the requirement that the patella needs to be cut in different thicknesses due to different pathological degrees. Then, both sides of the patella are directly clamped by the first fixing plate 13 and the second fixing plate 24, and the position of the rotational handle 52 on the threaded rod 51 is adjusted such that the rotational handle 52 fixes the distance between the first clamping rod 112 and the second clamping rod 122. The surgeon can directly insert a osteotome through the blade aperture 231 of the sheath 23 to cut the patella captured between the first fixation plate 13 and the second fixation plate 24. And after the cutting is finished, measuring the size of the patella by using a patella measuring tool, punching a hole on the patella for installing a prosthesis, and then installing the patella prosthesis on the patella. Finally, the position of the patella prosthesis on the patella is fixed by using the fixator 3, specifically, the first mounting column 41 is directly pulled out from the mounting groove 1221, and the second mounting column 47 is mounted in the mounting groove 1221, so that the patella prosthesis and the patella can be fixed by the first fixing plate 13 and the third fixing plate 32. When the patella cutting instrument is used, parts needing to be installed can be selected according to needs, the two functions of patella cutting and clamping and fixing of the patella prosthesis and the patella reserved part can be achieved through one instrument, the operation is very convenient, and the operation time is greatly shortened.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. Integral type patella osteotomy ware, its characterized in that: including centre gripping pincers (1) and can dismantle the connection and be in osteotomy pincers (2) on centre gripping pincers (1), centre gripping pincers (1) include first pole subassembly (11) and second pole subassembly (12), first pole subassembly (11) with second pole subassembly (12) middle part is articulated, first pole subassembly (11) one end rigid coupling has first fixed plate (13), second pole subassembly (12) with be provided with coupling assembling (4) between osteotomy pincers (2), first fixed plate (13) with osteotomy pincers (2) are located same one side of first pole subassembly (11) with second pole subassembly (12) articulated shaft, osteotomy pincers (2) pass through coupling assembling (4) can be dismantled and be connected in second pole subassembly (12) one end, osteotomy pincers (2) include fixed strip (21), sliding connection and the osteotomy locating piece (22) and the rigid coupling of fixed strip (21) one end are at osteotomy locating piece (22) towards first locating piece (22) Sheath (23) of pole subassembly (11) one end, one side rigid coupling of fixed strip (21) orientation first pole subassembly (11) has second fixed plate (24), works as osteotomy forceps (2) are installed when second pole subassembly (12) one end, thereby first fixed plate (13) with second fixed plate (24) butt carries out the centre gripping to the patella, runs through the relative both sides of sheath (23) are seted up and are supplied the inserted sword hole (231) of osteotome, sword hole (231) run through the direction with fixed strip (21) length direction is unanimous.

2. The integrated patella osteotomy defined in claim 1, wherein: the first rod assembly (11) comprises a first mounting plate (111) and a first clamping rod (112) arranged at one end of the first mounting plate (111); the second pole subassembly (12) include second mounting panel (121) and set up second clamping rod (122) of second mounting panel (121) one end, first mounting panel (111) with second mounting panel (121) middle part is articulated, first fixed plate (13) rigid coupling is in first clamping rod (112) one end, coupling assembling (4) set up second clamping rod (122) one end, work as first mounting panel (111) and/or when second mounting panel (121) rotated around the articulated shaft between them, osteotomy pincers (2) with first fixed plate (13) are close to relatively or keep away from to the centre gripping of realization to the patella with loosen.

3. The integrated patella osteotomy defined in claim 2, wherein: first mounting panel (111) one end with first supporting rod (112) middle part is slided and is articulated, second mounting panel (121) one end with second supporting rod (122) middle part is slided and is articulated, keep away from in first supporting rod (112) the one end of first fixed plate (13) with second mounting panel (121) is kept away from the one end of second supporting rod (122) is articulated, keep away from in second supporting rod (122) the one end of coupling assembling (4) with keep away from in first mounting panel (111) the one end of first supporting rod (112) is articulated.

4. The integrated patella osteotomy defined in claim 3, wherein: the one end rigid coupling that first clamping rod (112) were kept away from to first mounting panel (111) has first action bars (141), second mounting panel (121) are kept away from the one end rigid coupling of second clamping rod (122) has second action bars (142), first action bars (141) with second action bars (142) form handle (14) jointly.

5. The integrated patella osteotomy defined in claim 3, wherein: first holding rod (112) with be provided with between second holding rod (122) fixedly first holding rod (112) with retaining member (5) of distance between second holding rod (122), retaining member (5) are including the rigid coupling is in first holding rod (112) orientation threaded rod (51) of second holding rod (122) one side, threaded rod (51) run through the relative both sides of second holding rod (122) and with second holding rod (122) sliding fit, threaded connection has turning handle (52) on threaded rod (51), turning handle (52) are located second holding rod (122) are kept away from one side of first holding rod (112).

6. The integrated patella osteotomy defined in claim 1, wherein: two opposite ends of the osteotomy positioning block (22) are provided with clamping grooves (221) for embedding the ends of the fixing strips (21), and a sliding part (25) for driving the osteotomy positioning block (22) to slide on the fixing strips (21) is arranged between the osteotomy positioning block (22) and the fixing strips (21).

7. The integrated patellar osteotomy defined in claim 6, wherein: slider (25) include the rigid coupling be in osteotomy locating piece (22) is kept away from installation piece (251) of sword hole (231) one end, is worn to establish dead lever (252) and rigid coupling on installation piece (251) are in dead lever (252) orientation regulation pole (253) of osteotomy locating piece (22) one end, regulation pole (253) diameter is greater than the diameter of dead lever (252), the rigid coupling has adjustment handle (254) on dead lever (252), adjustment handle (254) are located installation piece (251) is kept away from one side of osteotomy locating piece (22), dead lever (252) with fixed strip (21) threaded connection.

8. The integrated patella osteotomy defined in claim 2, wherein: coupling assembling (4) are in including the rigid coupling fixed strip (21) are kept away from first erection column (41) of osteotomy locating piece (22) one end, and second supporting rod (122) are close to the confession has been seted up to the one end of first fixed plate (13) mounting groove (1221) of first erection column (41) embedding.

9. The integrated patella osteotomy defined in claim 8, wherein: coupling assembling (4) still include the rigid coupling be in supplementary piece (42) of second supporting rod (122) one end, supplementary piece (42) one end set up with supplementary groove (421) of mounting groove (1221) perpendicular intercommunication, sliding connection has in supplementary groove (421) pole (43) of keeping away, offer the confession on first erection column (41) lateral wall the first groove (411 of keeping away that keeps away that pole (43) slided, offer the confession on pole (43) outer wall the second of first erection column (41) embedding is kept away groove (431).

10. The integrated patella osteotomy defined in claim 1, wherein: still including dismantling the connection and being in fixer (3) on centre gripping pincers (1), fixer (3) are in including installation pole (31) and rigid coupling third fixed plate (32) of installation pole (31) one end, fixer (3) pass through coupling assembling (4) with centre gripping pincers (1) can dismantle the connection, coupling assembling (4) are in including the rigid coupling installation pole (31) are kept away from second erection column (47) of third fixed plate (32) one end.

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