CN110037788B

CN110037788B - Medical instrument applied to patellar fracture repair operation

Info

Publication number: CN110037788B
Application number: CN201910346616.7A
Authority: CN
Inventors: 宋坤修; 尹刚; 孔德海; 张继美
Original assignee: Individual
Current assignee: Song Kunxiu
Priority date: 2019-04-27
Filing date: 2019-04-27
Publication date: 2020-08-11
Anticipated expiration: 2039-04-27
Also published as: CN110037788A

Abstract

The invention provides a medical apparatus applied to patellar fracture repair, which comprises a rotating mechanism, a tensioning device and a power source arranged at the bottom of the rotating mechanism and used for providing power for the tensioning device, wherein the tensioning device comprises a single-wire-head tensioning mechanism used for tensioning a single-head steel wire, a double-wire-head tensioning mechanism used for tensioning a double-head steel wire and a tensioning control mechanism used for receiving the power of the power source and transmitting the power to the single-wire-head tensioning mechanism/the double-wire-head tensioning mechanism, the single-wire-head tensioning mechanism is positioned at one end of the rotating mechanism, the double-wire-head tensioning mechanism is positioned at the other end of the rotating mechanism, the single-wire-head tensioning mechanism is positioned at a working position, the double-wire-head tensioning mechanism is positioned at a free position, the combination state and the separation state which can be mutually switched are arranged between the control, the control tensioning mechanism is combined with the single thread head tensioning mechanism and is separated from the double thread head tensioning mechanism.

Description

Medical instrument applied to patellar fracture repair operation

Technical Field

The invention relates to the technical field of medical instruments, in particular to a medical instrument applied to patellar fracture repair.

Background

The patella is also called as a patella, has the functions of protecting knee joints, avoiding friction of quadriceps femoris tendon to femoral condyle cartilage surfaces, transmitting the force of quadriceps femoris muscles and participating in forming a knee stretching device; the knee joint has the functions of maintaining the stability of the knee joint in a half-squatting position and preventing the excessive adduction, abduction and flexion of the knee joint, has the function of a chain and increasing the rotation capacity of the knee joint, and is often used for treating patients with patellar fracture in clinical medical treatment, the serious needs are treated through patellar fracture repair, the patellar main body and a fracture part are reset firstly, then, the patellar main body and the fracture part are connected by utilizing a plurality of steel nails, in order to maintain the stability of the steel nails driven into the patella, the plurality of steel nails are arranged along the circumferential direction of the patella, finally, a steel wire is arranged on the plurality of steel nails in a penetrating way and is tightened, sheared and tightened, a tightening device is required to be used for operation in the process of tightening the steel wire, the steel wire is divided into two conditions after the steel needle is fixed, one condition is that the head extends out, the other condition that the double-, tighten up single line head steel wire and tighten up and adopt two kinds of differences and independent equipment that tighten up respectively to double line head steel wire and operate, this not only wasted medical cost, influenced the convenience of doctor's operation moreover, for this reason, this team has designed a structure ingenious through the research, the simple operation, reduced medical cost, the medical instrument of being applied to patella fracture restoration art that can all realize tightening up to single line head steel wire and double line head steel wire.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a medical instrument which is skillful in structure, convenient and fast to operate, capable of reducing medical cost and applied to patellar fracture repair and can tighten single-thread steel wires and double-thread steel wires.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

The medical instrument applied to the patella fracture repair comprises a rotating mechanism, a tensioning device and a power source arranged at the bottom of the rotating mechanism and used for providing power for the tensioning device, wherein the tensioning device comprises a single-wire-head tensioning mechanism used for tensioning a single-wire-head steel wire, a double-wire-head tensioning mechanism used for tensioning a double-wire-head steel wire and a tensioning control mechanism used for receiving power of the power source and transmitting the power to the single-wire-head tensioning mechanism/the double-wire-head tensioning mechanism, the single-wire-head tensioning mechanism is positioned at one end of the rotating mechanism, the double-wire-head tensioning mechanism is positioned at the other end of the rotating mechanism, the single-wire-head tensioning mechanism is positioned at a working position, the double-wire-head tensioning mechanism is positioned at an idle position, the control tensioning mechanism, the single-wire-head tensioning mechanism and the double-wire-head tensioning mechanism are all set to be in a combined state and a And (5) separating.

As a further optimization or improvement of the present solution.

The rotating mechanism comprises a rectangular fixing plate, a rectangular rotating bottom plate is rotatably arranged at the middle position of the upper end face of the fixing plate, a circular lug is arranged at the middle position of the upper end face of the fixing plate, the axial direction of the lug is perpendicular to the plane of the fixing plate, a circular groove is arranged at the middle position of the lower end face of the rotating bottom plate, the axial direction of the groove is perpendicular to the plane of the rotating bottom plate, the lug is matched with the groove, the lug is rotatably connected with the groove in a matched mode, the length direction of the rotating bottom plate is parallel to the length direction of the fixing plate in an initial state, a top cover matched with the rotating bottom plate is arranged above the rotating bottom plate, the rotating bottom plate and the top cover form a rectangular hollow plate structure, supporting blocks arranged in a triangular mode are arranged at the end position of the rotating bottom plate, The double-thread-end tensioning mechanism is arranged at the other end of the hollow plate structure and extends to the outside, the tensioning control mechanism is arranged in the middle of the hollow plate structure, and the driving end of the tensioning control mechanism is connected with the output end of the power source;

the rotating mechanism further comprises a locking assembly used for locking the rotating bottom plate and the fixed plate, the locking assembly is set to be in a locking state and an unlocking state which can be switched mutually, and the locking assembly is in the locking state in an initial state;

be provided with external step on the outer disc of bolt and external step is close to the fixed plate and arranges, and the movable sleeve is equipped with locking spring on the outer disc of bolt, and locking spring's one end is contradicted with swivel base plate, the other end is contradicted with external step and locking spring's elasticity is by the directional external step of swivel base plate all the time.

As a further optimization or improvement of the present solution.

The single-thread-head tensioning mechanism comprises a first sliding rail which is arranged on the upper end face of a rotating bottom plate and is parallel to the length direction of the rotating bottom plate, a first sliding block matched with the first sliding rail is arranged in the first sliding rail, the first sliding block and the first sliding rail form sliding guide fit along the length direction of the rotating bottom plate, a first clamping assembly which extends to the upper end face of a top cover is arranged on the upper end face of the first sliding block, the first clamping assembly comprises a first rectangular fixed clamping block which is fixedly arranged on the upper end face of the first sliding block, the first fixed clamping block extends to the upper side of the top cover from a first sliding groove which is formed in the top cover, the first fixed clamping block and the first sliding groove form sliding guide fit along the length direction of the top cover, the length direction of the first fixed clamping block is parallel to the length direction of the top cover, a first hand-screwing bolt which extends to the inside of the first clamping opening is arranged on the upper end face of the first fixed clamping, a first movable clamping block matched with the first clamping opening is movably arranged in the first clamping opening, the first movable clamping block is in rotating connection and matching with a first hand-screwed bolt, and anti-skid grains are arranged on the lower end face of the first movable clamping block;

the upper end face of the supporting block close to the first sliding block is provided with a wire penetrating sleeve axially parallel to the length direction of the top cover, the wire penetrating sleeve is arranged far away from the first sliding block, one end of the wire penetrating sleeve, which is far away from the first sliding block, is rotatably provided with a wire guiding pipe in L-shaped arrangement, and one end of the wire guiding pipe is communicated with the wire penetrating sleeve and is in rotating connection and matching with the wire penetrating sleeve;

the single-wire-head tensioning mechanism further comprises a first installation bulge arranged at the middle position of the upper end face of the rotating base plate and a first lug arranged on one side face of the sliding block, a first reset guide rod parallel to the length direction of the rotating base plate is arranged between the first installation bulge and a supporting block close to the first sliding block, a first lug sliding sleeve is arranged on the first reset guide rod, a first reset spring is movably sleeved outside the first reset guide rod, one end of the first reset spring is abutted against the first installation bulge, the other end of the first reset spring is abutted against the first lug, and the elastic force of the first reset spring is always abutted against the first lug by the.

As a further optimization or improvement of the present solution.

The double-line-head tensioning mechanism comprises a sliding rail II which is arranged on the upper end surface of the rotating bottom plate and is parallel to the length direction of the rotating bottom plate, a sliding block II matched with the sliding rail II is arranged in the sliding rail II, the sliding block II and the sliding rail II form sliding guide fit along the length direction of the rotating bottom plate, a clamping component I is also arranged on the upper end surface of the sliding block II, a pushing rod is arranged in the clamping component I in a clamping mode, the length direction of the pushing rod is parallel to the length direction of the rotating bottom plate, the double-line-head tensioning mechanism further comprises rectangular strip-shaped rotating arms which are arranged on the upper end surfaces of corresponding supporting blocks, one ends of the rotating arms are in rotating connection fit with the top cover, the axial direction of the rotating shafts is perpendicular to the plane where the rotating bottom plate is located;

the tip of swinging boom along width direction is seted up and is run through to outside mounting groove, and the mounting groove is located the middle part position of swinging boom, mounting groove and support to be provided with the connecting rod between the suspension end of push rod, articulated between the one end of connecting rod and the inner wall of mounting groove and the axial perpendicular to rotating bottom plate place plane of this articulated shaft, the other end of connecting rod with support to articulate between the push rod suspension end and be connected and the axial perpendicular to rotating bottom plate place plane of this articulated shaft.

As a further optimization or improvement of the present solution.

The suspension end of the rotating arm is provided with a second clamping assembly used for fixing the double-thread-head steel wire, the second clamping assembly comprises a second fixed clamping block fixedly connected with the suspension end of the rotating arm, a second clamping opening parallel to the width direction of the rotating arm is formed in the second fixed clamping block in a penetrating mode, the upper end face of the second fixed clamping block is provided with a second hand-screwed bolt extending into the second clamping opening, the second hand-screwed bolt and the second fixed clamping block form threaded connection fit, a second movable clamping block matched with the second clamping opening is movably arranged in the second clamping opening, the second movable clamping block is rotatably connected and matched with the second hand-screwed bolt, the lower end face of the second movable clamping block is provided with anti-skid grains, the suspension end of the rotating arm is further provided with guide wheels aligned with the second clamping opening, the axial direction of the guide wheels is perpendicular to the plane of the rotating base plate, and the two guide wheels are located between the two rotating;

the double-thread-end tensioning mechanism further comprises a second mounting protrusion arranged in the middle of the upper end face of the rotating bottom plate and second lugs arranged on two side faces of the sliding block, a second reset guide rod parallel to the length direction of the rotating bottom plate is arranged between the second mounting protrusion and a supporting block close to the second sliding block, the second lugs are sleeved on the second reset guide rod in a sliding mode, a second reset spring is sleeved outside the second reset guide rod in a movable mode, one end of the second reset spring is abutted against the second mounting protrusion, the other end of the second reset spring is abutted against the second lugs, and the elastic force of the second reset spring is always directed to the second.

As a further optimization or improvement of the present solution.

The tensioning control mechanism comprises a third sliding rail and a fourth sliding rail which are arranged on one side of the rotating bottom plate, the third sliding rail and the fourth sliding rail are parallel to each other and are parallel to the length direction of the rotating bottom plate, the third sliding rail is positioned below the fourth sliding rail, a first tensioning rack which forms sliding guide fit with the third sliding rail is arranged in the third sliding rail, the first tensioning rack is fixedly connected with the first sliding block, a second tensioning rack which forms sliding guide fit with the fourth sliding rail is arranged in the fourth sliding rail, and the second tensioning rack is fixedly connected with the second sliding block;

the bottom of the groove of the rotating bottom plate is provided with a semicircular annular rotating groove which is coaxially arranged, the upper end surface of the fixed plate is provided with a fixed shaft which is arranged vertical to the plane of the fixed plate, the fixed shaft extends upwards from the rotating groove to the upper part of the rotating bottom plate, the fixed shaft is arranged close to the second sliding block, a transmission gear matched with the fixed shaft is movably sleeved on the fixed shaft, the transmission gear is positioned above the first tensioning rack and aligned with the second tensioning rack, a driving shaft is arranged between the fixed shaft and the first tensioning rack, the axis of the driving shaft is parallel to the axial direction of the fixed shaft, the driving end of the driving shaft extends into the power source and is connected with the output end of the power source, the driving shaft is rotationally connected and matched with the fixed plate, the driving gear is coaxially and fixedly, in the initial state, the driving gear directly transmits power to the first tensioning rack.

As a further optimization or improvement of the present solution.

The power source comprises a rectangular mounting shell which is fixedly connected with the lower end face of the fixing plate and is provided with an upward opening, a handle which is vertically arranged downwards is arranged on the lower end face of the mounting shell along one end in the length direction, a mounting frame is arranged on the other end of the lower end face of the mounting shell along the length direction and is communicated with the interior of the mounting shell, a power main shaft which is parallel to the width direction of the fixing plate is rotatably arranged on the mounting frame, a downward extending shaped wrench is fixedly sleeved on the power main shaft, an included angle formed between the wrench and the handle is gradually increased along the extending direction of the wrench, and a one-way transmission mechanism for connecting the power main shaft and the driving shaft;

a volute spring is arranged between the mounting frame and the power main shaft, one end of the volute spring is fixedly connected with the mounting frame, the other end of the volute spring is wound and fixed on the power main shaft, the power main shaft is driven by the elastic force of the volute spring to rotate in the reverse direction all the time, a limiting rod used for limiting the volute spring is arranged above the volute spring, and the limiting rod is fixedly connected with the mounting frame;

the one-way transmission mechanism is positioned in the mounting shell and arranged between the power main shaft and the driving shaft, the one-way transmission mechanism comprises a first sleeve coaxially and fixedly arranged on the output end of the power main shaft, a first transition gear which is rotatably arranged on the inner wall of the mounting shell and coaxially arranged corresponding to the first sleeve, the first sleeve is arranged to deviate from the volute spring, a second sleeve which is arranged towards the first sleeve is coaxially arranged in the first transition gear, a sliding key is connected and matched between the first transition gear and the second sleeve, the second sleeve and the first transition gear form sliding guide matching along the axial direction of the first sleeve, one end of the first sleeve, close to the second sleeve, is coaxially provided with annular driving inclined teeth, annular driven inclined teeth which are matched with the driving inclined teeth are arranged on the outer circumferential surface of the second sleeve, the driving inclined teeth are meshed with the driven inclined teeth, a built-in step is coaxially arranged on the inner circumferential, one end of the floating spring is abutted against the built-in step, the other end of the floating spring is abutted against the driven helical tooth, and the elastic force of the floating spring always pushes the driven helical tooth to move close to the driving helical tooth;

the one-way transmission mechanism further comprises a fourth transition gear which is rotatably arranged in the installation shell, the axial direction of the fourth transition gear is parallel to the width direction of the fixing plate, a second transition gear and a third transition gear are arranged between the first transition gear and the fourth transition gear, the second transition gear and the third transition gear are coaxially and fixedly connected, the axial directions of the second transition gear and the third transition gear are both parallel to the width direction of the fixing plate, the first transition gear is meshed with the second transition gear, the third transition gear is meshed with the transition gear, a driving gear and a driven gear are coaxially and fixedly arranged on the fourth transition gear and coaxially fixed with the driving gear, a driving shaft driving end is coaxially and fixedly sleeved with the driven gear, the driving gear and the.

Compared with the prior art, the single-thread-end tensioning mechanism/double-thread-end tensioning mechanism has the advantages that the structure is ingenious, the principle is simple, the rotating mechanism is adopted to switch the single-thread-end tensioning mechanism and the double-thread-end tensioning mechanism at will, the operation convenience of a clinician is improved through the integrated structure, the single-thread-end tensioning mechanism/double-thread-end tensioning mechanism is driven manually, the structure is simpler and more ingenious, the production cost is reduced, and the medical cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a single-thread-end wire tensioning process.

FIG. 3 is a schematic diagram of the rotation process of the present invention.

Fig. 4 is a schematic structural diagram of the present invention.

Fig. 5 is a schematic structural diagram of a two-start wire tensioning process.

Fig. 6 is a schematic view of the internal structure of the present invention.

Fig. 7 is a view showing the combination of the rotating mechanism and the tensioning device.

Fig. 8 is a schematic structural view of the rotating mechanism.

Fig. 9 is a schematic view of the internal structure of the rotating mechanism.

Fig. 10 is a partial structural schematic view of the rotating mechanism.

Fig. 11 is a schematic partial structure diagram of the rotating mechanism.

Figure 12 is a partial exploded view of the rotary mechanism.

Fig. 13 is a partial structural schematic view of the rotating mechanism.

Fig. 14 is an installation view of the single thread end tensioning mechanism.

Fig. 15 is a view of the first clamping assembly in cooperation with the first slider.

Fig. 16 is a partial structural schematic view of the first clamping assembly.

Fig. 17 is an installation view of the double thread take-up mechanism.

Fig. 18 is a view showing the double thread tension mechanism in cooperation with the rotation mechanism.

Fig. 19 is a partial structural schematic view of a double thread end tensioning mechanism.

FIG. 20 is an installation view of the tension control mechanism.

FIG. 21 is a schematic view of the tension control mechanism.

FIG. 22 is a connection diagram of a power source and a tension control mechanism.

Fig. 23 is a schematic view of the internal structure of the power source.

Fig. 24 is a partial schematic view of the power source.

Fig. 25 is a partial exploded view of the power source.

Labeled as:

100. a rotation mechanism; 101. a fixing plate; 101a, a bump; 102. rotating the base plate; 103. a top cover; 104. a support block; 110. a locking assembly; 111. a bolt; 112. a locking hole; 113. a connecting handle; 114. an external step; 115. a locking spring;

200. a tensioning device; 210. a single thread end tensioning mechanism; 211. a first slide rail; 212. a first sliding block; 213a, a first fixed clamping block; 213b, a first clamping opening; 213c, a movable clamping block I; 213d, anti-skid lines; 214. screwing the first bolt by hand; 215a, a first mounting projection; 215b, a first lug; 216. a first reset guide rod; 217. a first return spring; 218. a first sliding chute; 219a, a wire-threading sleeve; 219b, a guide wire catheter; 220. a double thread end tensioning mechanism; 221. a second slide rail; 222. a second sliding block; 223. pushing the push rod; 224. a rotating arm; 224a, a mounting groove; 225. a connecting rod; 226a, a second fixed clamping block; 226b, a second nip; 226c, a second movable clamping block; 227. screwing a second bolt by hand; 228. a guide wheel; 230. a tension control mechanism; 231. a third slide rail; 232. tensioning the first rack; 233. a fourth slide rail; 234. tensioning a second rack; 235. a rotating tank; 236. a fixed shaft; 237. a transmission gear; 238. a drive shaft; 239. a drive gear;

300. a power source; 301. mounting a shell; 302. a grip; 303. installing a frame; 304. a power spindle; 305. a wrench; 306. a volute spiral spring; 307. a limiting rod; 311. a first sleeve; 312. driving helical teeth; 313. a second sleeve; 314. driven helical teeth; 315. a first transition gear; 316. a built-in step; 317. a floating spring; 318. a second transition gear; 319. a third transition gear; 320. a fourth transition gear; 321. a driving gear; 322. a driven gear.

Detailed Description

The medical apparatus applied to the patellar fracture repair comprises a rotating mechanism 100, a tensioning device 200 and a power source 300 which is arranged at the bottom of the rotating mechanism 100 and used for providing power for the tensioning device 200, wherein the tensioning device 200 comprises a single-wire-head tensioning mechanism 210 used for tensioning a single-head steel wire, a double-wire-head tensioning mechanism 220 used for tensioning a double-head steel wire and a tensioning control mechanism 230 used for receiving the power of the power source 300 and transmitting the power to the single-wire-head tensioning mechanism 210/the double-wire-head tensioning mechanism 220, the single-wire-head tensioning mechanism 210 is positioned at one end of the rotating mechanism 100, the double-wire-head tensioning mechanism 220 is positioned at the other end of the rotating mechanism 100, the single-wire-head tensioning mechanism 210 is positioned at a working position, the double-wire-head tensioning mechanism 220 is positioned at a free position, and the control tensioning mechanism 230, the single-wire, initially, the control tension mechanism 230 is coupled to the single thread take-up mechanism 210 and the control tension mechanism 230 is decoupled from the double thread take-up mechanism 220.

When a clinician needs to tighten the single-end steel wire by using the single-end tensioning mechanism 210 in the using process, the single-end steel wire penetrates into the single-end tensioning mechanism 210 and clamps and fixes the end, the power source 300 is started, the power source 300 transmits power to the tensioning control mechanism 230, and the tensioning control mechanism 230 drives the single-end tensioning mechanism 210 to gradually tighten the single-end steel wire; when the double-end steel wire needs to be tightened by the double-end tightening mechanism 220, the rotating mechanism 100 rotates one hundred eighty degrees, so that the positions of the single-end tightening mechanism 210 and the double-end tightening mechanism 220 are exchanged, at this time, the tightening mechanism 230 is controlled to be separated from the single-end tightening mechanism 210 and the tightening mechanism 230 is controlled to be combined with the double-end tightening mechanism 220, then, the double-end steel wire sequentially penetrates into the double-end tightening mechanism 220 and clamps and fixes the end, the power source 300 is started, the power source 300 transmits power to the tightening control mechanism 230, and the tightening control mechanism 230 drives the double-end tightening mechanism 220 to gradually tighten the double-end steel wire.

The rotating mechanism 100 comprises a rectangular fixing plate 101, a rectangular rotating bottom plate 102 is rotatably arranged in the middle of the upper end surface of the fixing plate 101, a circular convex block 101a is arranged in the middle of the upper end surface of the fixing plate 101, the axial direction of the convex block 101a is perpendicular to the plane of the fixing plate 101, a circular groove is arranged in the middle of the lower end surface of the rotating bottom plate 102, the axial direction of the groove is perpendicular to the plane of the rotating bottom plate 102, the convex block 101a is matched with the groove, the convex block 101a and the groove are rotatably connected and matched, the length direction of the rotating bottom plate 102 is parallel to the length direction of the fixing plate 101 in an initial state, a top cover 103 matched with the rotating bottom plate 102 is arranged above the rotating bottom plate 102, the rotating bottom plate 102 and the top cover 103 form a rectangular hollow plate body structure, supporting blocks 104 which, the single thread tensioning mechanism 210 is disposed at one end of the hollow plate structure and extends to the outside, the double thread tensioning mechanism 220 is disposed at the other end of the hollow plate structure and extends to the outside, the tensioning control mechanism 230 is disposed at the middle position of the hollow plate structure and the driving end is connected with the output end of the power source 300.

Specifically, because the rotating plate 102 is rotationally connected with the fixed plate 101, in order to ensure that the fixed plate 101 and the rotating base plate 102 maintain stability in an initial state and maintain stability after the rotating base plate 102 rotates one hundred eighty degrees, the rotating mechanism 100 further comprises a locking assembly for locking the rotating base plate 102 and the fixed plate 101, the locking assembly is set to be in a locking state and an unlocking state which can be switched mutually, and the locking assembly is in the locking state in the initial state, the locking assembly comprises a plug pin 111 movably penetrating through the top cover 103 and extending to the fixed plate 101 at the middle position of the rotating base plate 102, the axial direction of the plug pin 111 is parallel to the plane of the fixed plate 101, the plug pin 111 forms sliding guide fit with the top cover 103 and the rotating base plate 102 along the axial direction thereof, the plug pins 111 are arranged symmetrically along the width direction of the rotating base plate 102, the upper end face of the fixed plate 101 is provided with a locking hole 112, a connecting handle 113 for fixedly connecting the two bolts 111 is arranged above the top cover 103, and the bolts 111 are withdrawn from the locking holes 112 by pulling the connecting handle 113 away from the top cover 103, so that the locking assembly is switched to an unlocking state.

More specifically, after the rotating mechanism 100 rotates one hundred eighty degrees, the plug pin 111 needs to be automatically inserted into the locking hole 112 and the locking assembly needs to be switched to the locking state, for this reason, an external step 114 is arranged on an outer circumferential surface of the plug pin 111, the external step 114 is arranged close to the fixing plate 101, a locking spring 115 is movably sleeved on the outer circumferential surface of the plug pin 111, one end of the locking spring 115 abuts against the rotating base plate 102, the other end of the locking spring abuts against the external step 114, and the elastic force of the locking spring 115 always points to the external step 114 from the rotating base plate 102.

The rotating mechanism 100 is embodied in the working process that, in the initial state, the single-thread-end tensioning mechanism 210 is in the working position, the clinician can utilize the single-thread-end tensioning mechanism 210 to tighten the single-thread-end steel wire, if the double-thread-end tensioning mechanism 220 needs to be switched to the working position, the clinician pulls the connection handle 113 away from the top cover 103, the connection handle 113 drives the latch 111 to move synchronously and the latch 111 is withdrawn from the locking hole 112, the locking spring 115 is gradually compressed and the elastic potential energy is increased, the locking assembly 110 is switched to the unlocking state, at this time, the connecting handle 113 is rotated one hundred eighty degrees, the double-end tensioning mechanism 220 is switched to the working position, the connecting handle 113 is loosened, the elastic potential energy of the locking spring 115 is gradually released, the bolt 111 is pushed to be inserted into the locking hole 112, the locking assembly is switched to the locking state, and a clinician can utilize the double-end tensioning mechanism 220 to perform tensioning treatment on the double-end steel wire.

The single-wire-head tensioning mechanism 210 comprises a first sliding rail 211 which is arranged on the upper end face of the rotating base plate 102 and is parallel to the length direction of the rotating base plate, a first sliding block 212 which is matched with the first sliding rail 211 is arranged in the first sliding rail 211, the first sliding block 212 and the first sliding rail 211 form sliding guide fit along the length direction of the rotating base plate 102, a first clamping component which extends to the upper end face of the top cover 103 is arranged on the upper end face of the first sliding block 212, the first clamping component comprises a first rectangular fixed clamping block 213a which is fixedly arranged on the upper end face of the first sliding block 212, the first fixed clamping block 213a extends to the upper part of the top cover 103 from a first sliding groove 218 arranged on the top cover 103, the first fixed clamping block 213a and the first sliding groove 218 form sliding guide fit along the length direction of the top cover 103, the length direction of the first fixed clamping block 213a is parallel to the length direction of the top cover 103, a first clamping opening 213b which is parallel to the length direction is arranged on the first fixed clamping block 213, the first hand-screwed bolt 214 and the first fixed clamping block 213a are in threaded connection and match, the first movable clamping block 213c matched with the first fixed clamping block is movably arranged in the first clamping opening 213b, and the first movable clamping block 213c is in rotational connection and match with the first hand-screwed bolt 214.

Specifically, in order to further improve the clamping stability of the movable clamping block I213 on the single-wire-head steel wire, a wire threading sleeve 219a which is axially parallel to the length direction of the top cover 103 is arranged on the upper end face of the supporting block 104 close to the slider I212, the wire threading sleeve 219a is far away from the slider I212 and is arranged, one end, away from the slider I212, of the wire threading sleeve 219a is rotatably provided with a wire guiding pipe 219b which is arranged in an L shape, one end of the wire guiding pipe 219b is communicated with the wire threading sleeve 219a and is rotatably connected and matched with the wire threading sleeve 219a, the single-wire-head steel wire is clamped by a clamping assembly I after sequentially passing through the wire guiding pipe 219b and the wire threading sleeve 219a, and the single-wire-head steel wire.

More specifically, after the single-wire-head steel wire is tightened, cut and tightened, the first slider 212 needs to be reset, and therefore, the single-wire-head tensioning mechanism 210 further comprises a first mounting protrusion 215a arranged at the middle position of the upper end face of the rotating base plate 102 and a first lug 215b arranged on the side face of the first slider 212, a first reset guide rod 216 parallel to the length direction of the rotating base plate 102 is arranged between the first mounting protrusion 215a and the supporting block 104 close to the first slider 212, the first lug 215b is slidably sleeved on the first reset guide rod 216, a first reset spring 217 is movably sleeved outside the first reset guide rod 216, one end of the first reset spring 217 abuts against the first mounting protrusion 215a, the other end of the first reset spring abuts against the first lug 215b, and the elastic force of the first reset spring 217 is directed to the first lug 215b by the first mounting.

The single-thread-end tensioning mechanism 210 is specifically represented in the working process that the single-thread-end tensioning mechanism 210 is switched to a working position, a clinician sequentially penetrates a single-thread-end steel wire through a wire guide pipe 219b and a wire penetrating sleeve 219a and then penetrates into a first clamping opening 213b, a first screw bolt 214 is rotated by a hand, a movable clamping block 213c is driven to clamp and fix the single-thread-end steel wire, then, the tension control mechanism 230 receives the power of the power source 300 and drives the first slide block 212 to slide along the first slide rail 211 towards the middle position of the rotating base plate 102, the first clamping assembly will synchronously move along with the first slide block 212 and tighten the single-thread steel wire, the first return spring 217 will gradually compress and the elastic potential energy will increase, when the steel wire is cut off, the elastic potential energy of the first return spring 217 is gradually released and drives the first slide block 212 to slide along the first slide rail 211 for resetting, and the first slide block 212 drives the clamping assembly to synchronously move for resetting.

The double-thread-head tensioning mechanism 220 comprises a sliding rail II 221 which is arranged on the upper end face of the rotating base plate 102 and is parallel to the length direction of the rotating base plate, a sliding block II 222 which is matched with the sliding rail II is arranged in the sliding rail II 221, the sliding block II 222 and the sliding rail II 221 form sliding guide fit along the length direction of the rotating base plate 102, the upper end face of the sliding block II 222 is also provided with a clamping component I, a push resisting rod 223 is clamped in the clamping component I, the length direction of the push resisting rod 223 is parallel to the length direction of the rotating base plate 102, the double-thread-head tensioning mechanism 220 further comprises a rectangular strip-shaped rotating arm 224 which is arranged on the upper end face of the corresponding supporting block 104, one end of the rotating arm 224 is rotatably connected and matched with the top cover 103, the axial direction of the rotating arm is perpendicular to the plane of the rotating base plate 102, the other end of the, the ends of the double-end steel wires are respectively fixed to the suspension ends of the rotating arms 224, and the double-end steel wires are tightened by driving the two rotating arms 224 to be away from each other and rotate.

Specifically, in order to drive the two rotating arms 224 to rotate away from each other, an installation groove 224a penetrating to the outside is formed in an end portion of the rotating arm 224 in the width direction, the installation groove 224a is located in the middle of the rotating arm 224, a connection rod 225 is arranged between the installation groove 224a and a suspension end of the pushing rod 223, one end of the connection rod 225 is hinged to an inner wall of the installation groove 224a, an axial direction of a hinge shaft formed at the hinge position is perpendicular to a plane where the rotating base plate 102 is located, the other end of the connection rod 225 is hinged to the suspension end of the pushing rod 223, and an axial direction of the hinge shaft formed at the hinge position is perpendicular to the plane where the rotating base plate 102 is located, the pushing rod 223 is driven by the two sliders 222 to move towards the middle of the rotating base plate 102.

Specifically, in order to clamp and fix the double-wire-head steel wire, the suspension end of the rotating arm 224 is provided with a second clamping assembly for fixing the double-wire-head steel wire, the second clamping assembly comprises a second fixed clamping block 226a fixedly connected with the suspension end of the rotating arm 224, a second clamping opening 226b parallel to the width direction of the rotating arm 224 is formed in the second fixed clamping block 226a in a penetrating manner, a second hand-screwed bolt 227 extending into the second clamping opening 226b is arranged on the upper end face of the second fixed clamping block 226a, the second hand-screwed bolt 227 and the second fixed clamping block 226a form threaded connection and matching, a second movable clamping block 226c matched with the second clamping opening 226b is movably arranged in the second clamping opening 226b, the second movable clamping block 226c is rotatably connected and matched with the second hand-screwed bolt 227, the lower end face of the second movable clamping block 226c is provided with anti-slip threads 213d, in order to guide the double-wire-head steel wire penetrating into the second clamping opening 226b, the suspended end of the rotating arm 224 is further provided with a guide wheel 228 aligned with the second nip 226b, and the axial direction of the guide wheel 228 is perpendicular to the plane of the rotating base plate 102, and the two guide wheels 228 are located between the two rotating arms 224.

More specifically, after the double-thread-head steel wire is tightened, cut and tightened, the second slider 222 needs to be reset, and therefore the double-thread-head tensioning mechanism 220 further comprises a second mounting protrusion arranged at the middle position of the upper end face of the rotating base plate 102 and a second lug arranged on the side face of the second slider 222, a second reset guide rod parallel to the length direction of the rotating base plate 102 is arranged between the second mounting protrusion and the supporting block 104 close to the second slider 222, the second lug is slidably sleeved on the second reset guide rod, a second reset spring is movably sleeved outside the second reset guide rod, one end of the second reset spring is abutted against the second mounting protrusion, the other end of the second reset spring is abutted against the second lug, and the elastic force of the second reset spring is always directed to the second.

The double-wire-head tensioning mechanism 220 is characterized in that the double-wire-head tensioning mechanism 220 is switched to a working position, a clinician crosses two ends of a double-wire-head steel wire and respectively winds and connects the two ends of the double-wire-head steel wire into the guide wheel 228 and then penetrates into the clamping opening two 226b, the rotating hand screws the bolt two 227 to drive the movable clamping block two 226c to clamp and fix the double-wire-head steel wire, then the tensioning control mechanism 230 receives the power of the power source 300 and drives the sliding block two 222 to slide towards the middle position of the rotating bottom plate 102 along the sliding rail two 221, the sliding block two 222 drives the pushing rod 223 to synchronously move, the connecting rod 225 rotates and pushes the rotating arm 224 to rotate away from each other, so that the crossed double-wire-head steel wire is tensioned, in the process, the return spring two gradually compresses and increases the elastic potential energy, after the steel wire is sheared, the elastic potential energy of the return spring two gradually releases and drives the, the second slider 222 drives the pushing rod 223 to move synchronously to reset, and the pushing rod 223 drives the rotating arm 224 to rotate to reset.

When the single thread-end take-up mechanism 210 is switched to the operating position, the take-up control mechanism 230 needs to be integrated with the single thread-end take-up mechanism 210 and separated from the double thread-end take-up mechanism 220; when the two-wire head tensioning mechanism 220 is switched to the operating position, the tensioning control mechanism 230 needs to be integrated with the two-wire head tensioning mechanism 220 and separated from the single-wire head tensioning mechanism 210, and for this purpose, the tensioning control mechanism 230 comprises a sliding rail three 231 and a sliding rail four 233 which are arranged on one side of the rotating base plate 102, the sliding rail three 231 and the sliding rail four 233 are parallel to each other and are parallel to the length direction of the rotating base plate 102, the sliding rail three 231 is positioned below the sliding rail four 233, a tensioning rack one 232 which forms sliding guiding fit with the sliding rail three 231 is arranged in the sliding rail three 231, the tensioning rack one 232 is fixedly connected with the sliding block one 212, a tensioning rack two 234 which forms sliding guiding fit with the sliding rail four 233 is arranged in the sliding rail four 233, the tensioning rack two 234 is fixedly connected with the sliding block two 222, the operation of the single thread end tensioning mechanism 210 is achieved by driving the tensioning rack one 232, and the operation of the double thread end tensioning mechanism 220 is achieved by driving the tensioning rack two 234.

Specifically, a semicircular annular rotating groove 235 which is coaxially arranged is formed at the bottom of a groove of the rotating base plate 102, a fixed shaft 236 which is perpendicular to the plane of the fixed plate 101 is arranged on the upper end face of the fixed plate 101, the fixed shaft 236 extends upwards from the rotating groove 235 to the upper side of the rotating base plate 102, the fixed shaft 236 is arranged close to the second slider 222, a transmission gear 237 which is matched with the fixed shaft 236 is movably sleeved on the fixed shaft 236, the transmission gear 237 is positioned above the first tensioning rack 232, the transmission gear 237 is aligned with the second tensioning rack 234, a driving shaft 238 is arranged between the fixed shaft 236 and the first tensioning rack 232, the axis of the driving shaft 238 is parallel to the axial direction of the fixed shaft 236, the driving end of the driving shaft 238 extends into the power source 300 and is connected with the output end of the power source 300, the driving shaft 238 is rotatably connected, The first tensioning racks 232 are all meshed, the driving gear 239 is located below the second tensioning rack 234, in the initial state, the driving gear 239 directly transmits power to the first tensioning racks 232, when the rotating mechanism 100 rotates by one hundred eighty degrees to enable the double-thread-head tensioning mechanism 220 to be in the working position, the transmission gear 237 is meshed with the second tensioning racks 234, and the transmission gear 237 indirectly transmits the power of the driving gear 239 to the second tensioning racks 234.

The tensioning control mechanism 230 is embodied in the working process that when the single-thread-head tensioning mechanism 210 is in the working position, the output end of the power source 300 transmits power to the driving shaft 238, the driving shaft 238 drives the driving gear 239 to synchronously rotate, the driving gear 239 drives the tensioning rack one 232 to slide along the third sliding rail 231 towards the middle position of the rotating bottom plate 102, and the tensioning rack one 232 drives the single-thread-head tensioning mechanism 210 to tighten the steel wire clamped by the single-thread-head tensioning mechanism 210; in the process of switching the double-thread-head tensioning mechanism 220 to be in the working position, the driving gear 239 is separated from the first tensioning rack 232, and the transmission gear 237 is combined with the second tensioning rack 234, at this time, the output end of the power source 300 transmits power to the driving shaft 238, the driving shaft 238 drives the driving gear 239 to synchronously rotate, the driving gear 239 drives the transmission gear 237 to rotate, the transmission gear 237 drives the second tensioning rack 234 to slide along the four sliding rails 233 towards the middle position of the rotating base plate 102, and the second tensioning rack 234 drives the double-thread-head tensioning mechanism 220 to tighten the steel wire clamped by the double-thread-head tensioning mechanism 220.

The power source 300 comprises a rectangular mounting shell 301 fixedly connected with the lower end face of the fixing plate 101 and provided with an upward opening, a handle 302 vertically arranged downwards is arranged on the lower end face of the mounting shell 301 along one end of the length direction, a mounting frame 303 is arranged on the lower end face of the mounting shell 301 along the other end of the length direction and communicated with the inside of the mounting shell 301, a power spindle 304 parallel to the width direction of the fixing plate 101 is rotatably arranged on the mounting frame 303, a downwardly extending shaped wrench 305 is fixedly sleeved on the power spindle 304, an included angle formed between the wrench 305 and the handle 302 is gradually increased along the extending direction of the wrench 305, a one-way transmission mechanism used for connecting the power spindle 304 and the driving shaft 238 is arranged between the power spindle 304 and the driving shaft 238, by pulling the wrench 305 to rotate the power spindle 304, the power of the power spindle 304 processed by the one-way transmission mechanism is transmitted to the driving shaft 238.

The angle of rotation of the primary wrench 305 close to the grip 302 is limited, the angle of rotation of the power main shaft 304 driven by the wrench 305 is also limited, the power of the power main shaft 304 is transmitted to the driving shaft 238 in a single direction by the single-direction transmission mechanism, the steel wire is difficult to tighten by the primary wrench 305, therefore, the wrench 305 needs to be wrenched for multiple times to ensure sufficient rotation power of the power main shaft 304, and the wrench 305 needs to be rapidly reset after each wrenching by continuously wrenching the wrench 305, therefore, a spiral spring 306 is arranged between the mounting frame 303 and the power main shaft 304, one end of the spiral spring 306 is fixedly connected with the mounting frame 303, the other end of the spiral spring is wound and fixed on the power main shaft 304, the power main shaft 304 is always driven to rotate reversely by the elastic force of the spiral spring 306, in order to ensure the stability of the spiral spring 306, a limiting rod 307 for limiting the spiral spring 306 is arranged above and the limiting rod 307, when a clinician pulls the wrench 305 to drive the power spindle 304 to rotate forward, the elastic potential energy of the scroll spring 306 is gradually increased, the one-way transmission mechanism can transmit the forward rotation power of the power spindle 304 to the driving shaft 238, when the clinician loosens the rotation of the wrench 305, the elastic potential energy of the scroll spring 306 is gradually released and drives the power spindle 304 to rotate reversely to reset, the power spindle 304 drives the wrench 305 to rotate synchronously to reset, the one-way transmission mechanism cannot transmit the reverse rotation power of the power spindle 304 to the driving shaft 238, and then the clinician continuously pulls the wrench 305 to realize that the power spindle 304 can continuously provide power for the driving shaft 238.

The one-way transmission mechanism is positioned in the mounting shell 301 and is arranged between the power main shaft 304 and the driving shaft 238, the one-way transmission mechanism comprises a first sleeve 311 coaxially and fixedly arranged on the output end of the power main shaft 304, and a first transition gear 315 rotatably arranged on the inner wall of the mounting shell 301 and coaxially arranged corresponding to the first sleeve 311, the first sleeve 311 is arranged away from the volute spring 306, a second sleeve 313 arranged towards the first sleeve 311 is coaxially arranged in the first transition gear 315, the first transition gear 315 and the second sleeve 313 are in sliding key connection and matching, the second sleeve 313 and the first transition gear 315 form sliding guide and matching along the axial direction, one end of the first sleeve 311, which is close to the second sleeve 313, is coaxially provided with an annular driving helical tooth 312, an annular driven helical tooth 314 matched with the driving helical tooth 312 is arranged on the outer circular surface of the second sleeve 313, the driving helical tooth 312 is meshed with the driven helical tooth 314, when the driving helical, the driving helical teeth 312 extrude the driven helical teeth 314 and enable the second sleeve 313 to deviate from the first sleeve 311 to float, in order to facilitate self-resetting of the driven helical teeth 314, a built-in step 316 is coaxially arranged on the inner circular surface of the first transition gear 315, a floating spring 317 is movably sleeved outside the second sleeve 313, one end of the floating spring 317 abuts against the built-in step 316, the other end of the floating spring 317 abuts against the driven helical teeth 314, and the elastic force of the floating spring 317 constantly pushes the driven helical teeth 314 to move close to the driving helical teeth 312.

Specifically, in order to transmit the power of the first transition gear 315 to the driving shaft 238, the one-way transmission mechanism further includes a fourth transition gear 320 rotatably disposed in the mounting housing 301, and an axial direction of the fourth transition gear 320 is parallel to a width direction of the fixing plate 101, a second transition gear 318 and a third transition gear 319 are disposed between the first transition gear 315 and the fourth transition gear 320, the second transition gear 318 and the third transition gear 319 are coaxially and fixedly connected, and axial directions of the two transition gears are parallel to the width direction of the fixing plate 101, the first transition gear 315 is engaged with the second transition gear 318, the third transition gear 319 is engaged with the transition gear 320, in order to transmit the power of the fourth transition gear 320 to the driving shaft 238, the fourth transition gear 320 is coaxially and fixedly disposed with a driving gear 321, a driving sleeve is disposed at a driving end of the driving shaft 238 is coaxially and fixedly sleeved with a driven gear 322, because an axial direction of the driving, therefore, the driving gear 321 and the driven gear 322 are both helical gears, and the driving gear 321 is engaged with the driven gear 322.

The specific expression of the power source 300 during the operation is that the clinician repeatedly pulls the wrench 305, the wrench 305 drives the power spindle 304 to rotate, the power spindle 304 drives the driving helical gear 312 to drive the driven helical gear 314 to rotate, the driven helical gear 314 drives the first transition gear 315 to rotate, the first transition gear 315 drives the second transition gear 318 to rotate, the second transition gear 318 drives the third transition gear 319 to rotate synchronously, the third transition gear 319 drives the transition gear 320 to rotate, the fourth transition gear 320 drives the driving gear 321 to rotate, the driving gear 321 drives the driven gear 322 to rotate, the driven gear 322 drives the driving shaft 238 to rotate, and the power transmission to the tightening control mechanism 230 is realized.

Claims

1. Be applied to medical instrument of patella fracture restoration art which characterized in that: the tensioning device comprises a single-wire-head tensioning mechanism for tensioning a single-head steel wire, a double-wire-head tensioning mechanism for tensioning a double-head steel wire and a tensioning control mechanism for receiving power of the power source and transmitting the power to the single-wire-head tensioning mechanism or the double-wire-head tensioning mechanism, wherein the single-wire-head tensioning mechanism is positioned at one end of the rotating mechanism, the double-wire-head tensioning mechanism is positioned at the other end of the rotating mechanism, the single-wire-head tensioning mechanism is positioned at a working position, the double-wire-head tensioning mechanism is positioned at an idle position, the tensioning control mechanism, the single-wire-head tensioning mechanism and the double-wire-head tensioning mechanism are all set to be in a combined state and a separated state which can be mutually switched, and in an initial state, the tensioning control mechanism is combined with the single-thread-head tensioning mechanism and is separated from the double-thread-head tensioning mechanism;

the rotating mechanism comprises a rectangular fixing plate, a rectangular rotating bottom plate is rotatably arranged at the middle position of the upper end face of the fixing plate, a circular lug is arranged at the middle position of the upper end face of the fixing plate, the axial direction of the lug is perpendicular to the plane of the fixing plate, a circular groove is arranged at the middle position of the lower end face of the rotating bottom plate, the axial direction of the groove is perpendicular to the plane of the rotating bottom plate, the lug is matched with the groove, the lug is rotatably connected with the groove in a matched mode, the length direction of the rotating bottom plate is parallel to the length direction of the fixing plate in an initial state, a top cover matched with the rotating bottom plate is arranged above the rotating bottom plate, the rotating bottom plate and the top cover form a rectangular hollow plate structure, supporting blocks arranged in a triangular mode are arranged at the end position of the rotating bottom plate, The double-thread-end tensioning mechanism is arranged at the other end of the hollow plate structure and extends to the outside, and the tensioning control mechanism is arranged at the middle position of the hollow plate structure and the driving end of the tensioning control mechanism is connected with the output end of the power source.

2. The medical device for patellar fracture repair according to claim 1, wherein: the rotating mechanism further comprises a locking assembly used for locking the rotating bottom plate and the fixed plate, the locking assembly is set to be in a locking state and an unlocking state which can be switched mutually, and the locking assembly is in the locking state in an initial state;

3. The medical device for patellar fracture repair according to claim 2, wherein: the single-thread-head tensioning mechanism comprises a first sliding rail which is arranged on the upper end face of a rotating bottom plate and is parallel to the length direction of the rotating bottom plate, a first sliding block matched with the first sliding rail is arranged in the first sliding rail, the first sliding block and the first sliding rail form sliding guide fit along the length direction of the rotating bottom plate, a first clamping assembly which extends to the upper end face of a top cover is arranged on the upper end face of the first sliding block, the first clamping assembly comprises a first rectangular fixed clamping block which is fixedly arranged on the upper end face of the first sliding block, the first fixed clamping block extends to the upper side of the top cover from a first sliding groove which is formed in the top cover, the first fixed clamping block and the first sliding groove form sliding guide fit along the length direction of the top cover, the length direction of the first fixed clamping block is parallel to the length direction of the top cover, a first hand-screwing bolt which extends to the inside of the first clamping opening is arranged on the upper end face of the first fixed clamping, a first movable clamping block matched with the first clamping opening is movably arranged in the first clamping opening, the first movable clamping block is in rotating connection and matching with a first hand-screwed bolt, and anti-skid grains are arranged on the lower end face of the first movable clamping block;

the wire threading sleeve is axially parallel to the length direction of the top cover and is arranged on the upper end face of the supporting block close to the first sliding block, a wire leading guide pipe which is arranged in an L shape is rotatably arranged at one end, away from the first sliding block, of the wire threading sleeve, and one end of the wire leading guide pipe is communicated with the wire threading sleeve and is in rotating connection and matching with the wire threading sleeve.

4. The medical device for patellar fracture repair according to claim 3, wherein: the single-wire-head tensioning mechanism further comprises a first installation bulge arranged at the middle position of the upper end face of the rotating base plate and a first lug arranged on one side face of the sliding block, a first reset guide rod parallel to the length direction of the rotating base plate is arranged between the first installation bulge and a supporting block close to the first sliding block, a first lug sliding sleeve is arranged on the first reset guide rod, a first reset spring is movably sleeved outside the first reset guide rod, one end of the first reset spring is abutted against the first installation bulge, the other end of the first reset spring is abutted against the first lug, and the elastic force of the first reset spring is always abutted against the first lug by the.

5. The medical device for patellar fracture repair according to claim 1, wherein: the double-line-head tensioning mechanism comprises a sliding rail II which is arranged on the upper end surface of the rotating bottom plate and is parallel to the length direction of the rotating bottom plate, a sliding block II matched with the sliding rail II is arranged in the sliding rail II, the sliding block II and the sliding rail II form sliding guide fit along the length direction of the rotating bottom plate, a clamping component I is also arranged on the upper end surface of the sliding block II, a push rod is arranged in the clamping component I in a clamping mode, the length direction of the push rod is parallel to the length direction of the rotating bottom plate, the double-line-head tensioning mechanism further comprises rectangular strip-shaped rotating arms which are arranged on the upper end surface of the corresponding supporting block, one end of each rotating arm is in rotating connection fit with the top cover, the axial direction of a rotating shaft formed by the rotating joints of the rotating arms and the top cover is perpendicular to the plane;

the tip of swinging boom along width direction is seted up and is run through to outside mounting groove, and the mounting groove is located the middle part position of swinging boom, mounting groove and support be provided with the connecting rod between the suspension end of push rod, articulated between the one end of connecting rod and the inner wall of mounting groove be connected and the connecting rod, the axial perpendicular to swivel base plate place plane of the articulated shaft that the articulated department of mounting groove constitutes, the other end of connecting rod with support articulated between the push rod suspension end be connected and the axial perpendicular to swivel base plate place plane of this articulated shaft.

6. The medical device for patellar fracture repair according to claim 5, wherein: the suspension end of the rotating arm is provided with a second clamping assembly used for fixing the double-thread-head steel wire, the second clamping assembly comprises a second fixed clamping block fixedly connected with the suspension end of the rotating arm, a second clamping opening parallel to the width direction of the rotating arm is formed in the second fixed clamping block in a penetrating mode, the upper end face of the second fixed clamping block is provided with a second hand-screwed bolt extending into the second clamping opening, the second hand-screwed bolt and the second fixed clamping block form threaded connection fit, a second movable clamping block matched with the second clamping opening is movably arranged in the second clamping opening, the second movable clamping block is rotatably connected and matched with the second hand-screwed bolt, the lower end face of the second movable clamping block is provided with anti-skid grains, the suspension end of the rotating arm is further provided with guide wheels aligned with the second clamping opening, the axial direction of the guide wheels is perpendicular to the plane of the rotating base plate, and the two guide wheels are located between the two rotating;

7. The medical device for patellar fracture repair according to claim 4 or 5, wherein: the tensioning control mechanism comprises a third sliding rail and a fourth sliding rail which are arranged on one side of the rotating bottom plate, the third sliding rail and the fourth sliding rail are parallel to each other and are parallel to the length direction of the rotating bottom plate, the third sliding rail is positioned below the fourth sliding rail, a first tensioning rack which forms sliding guide fit with the third sliding rail is arranged in the third sliding rail, the first tensioning rack is fixedly connected with the first sliding block, a second tensioning rack which forms sliding guide fit with the fourth sliding rail is arranged in the fourth sliding rail, and the second tensioning rack is fixedly connected with the second sliding block;

8. The medical device for patellar fracture repair according to claim 7, wherein: the power source comprises a rectangular mounting shell which is fixedly connected with the lower end face of the fixed plate and is provided with an upward opening, a handle which is vertically and downwardly arranged is arranged at one end of the lower end face of the mounting shell along the length direction, a mounting frame is arranged at the other end of the lower end face of the mounting shell along the length direction and is communicated with the interior of the mounting shell, a power main shaft which is parallel to the width direction of the fixed plate is rotatably arranged on the mounting frame, a wrench which extends downwards is fixedly sleeved on the power main shaft, an included angle formed between the wrench and the handle is gradually increased along the extending direction of the wrench, and a one-way transmission mechanism which is used for connecting the power;

be provided with volute spiral spring between installing frame and the power main shaft, volute spiral spring's one end and installing frame fixed connection, the other end winding are fixed in on the power main shaft and volute spiral spring's elasticity drives power main shaft antiport all the time, volute spiral spring's top is provided with and is used for carrying on spacing gag lever post and installing frame fixed connection to it.

9. The medical device for patellar fracture repair according to claim 8, wherein: the one-way transmission mechanism is positioned in the mounting shell and arranged between the power main shaft and the driving shaft, the one-way transmission mechanism comprises a first sleeve coaxially and fixedly arranged on the output end of the power main shaft, a first transition gear which is rotatably arranged on the inner wall of the mounting shell and coaxially arranged corresponding to the first sleeve, the first sleeve is arranged to deviate from the volute spring, a second sleeve which is arranged towards the first sleeve is coaxially arranged in the first transition gear, a sliding key is connected and matched between the first transition gear and the second sleeve, the second sleeve and the first transition gear form sliding guide matching along the axial direction of the first sleeve, one end of the first sleeve, close to the second sleeve, is coaxially provided with annular driving inclined teeth, annular driven inclined teeth which are matched with the driving inclined teeth are arranged on the outer circumferential surface of the second sleeve, the driving inclined teeth are meshed with the driven inclined teeth, a built-in step is coaxially arranged on the inner circumferential, one end of the floating spring is abutted against the built-in step, the other end of the floating spring is abutted against the driven helical tooth, and the elastic force of the floating spring always pushes the driven helical tooth to move close to the driving helical tooth;

the one-way transmission mechanism further comprises a fourth transition gear which is rotatably arranged in the installation shell, the axial direction of the fourth transition gear is parallel to the width direction of the fixed plate, a second transition gear and a third transition gear are arranged between the first transition gear and the fourth transition gear, the second transition gear and the third transition gear are coaxially and fixedly connected, the axial directions of the second transition gear and the third transition gear are both parallel to the width direction of the fixed plate, the first transition gear is meshed with the second transition gear, the third transition gear is meshed with the fourth transition gear, a driving gear and a driven gear are coaxially and fixedly arranged on the fourth transition gear and coaxially fixed with the driving gear, and a driving end of the driving shaft is coaxially and fixedly provided with the driven gear.