阅读说明：本技术 一种可有效加压骨折断端的枪式提拉钳 (Gun type lifting forceps capable of effectively pressurizing fracture broken ends ) 是由 任广凯 吴丹凯 彭传刚 吴阳 袁宝明 刘贺 于 2020-08-19 设计创作，主要内容包括：一种可有效加压骨折断端的枪式提拉钳,包括把手,枪杆穿过把手,拨片设在把手内部,拨片与把手之间设置有压缩弹簧,压缩弹簧套置在枪杆外部,把手内部转动连接有变向组件,扣动扳机,扳机顶部抵触挤压变向组件下端,变向组件上端抵触挤压拨片下端,扳机通过变向组件带动拨片挤压压缩弹簧,同时拨片抵持于枪杆顶面与底面并带动枪杆向后滑动,拨片被挤压后由竖直状态变为倾斜状态,进而通过牵拉部牵拉髓内钉尾端将骨折远段向近段提拉,实现骨折断端的确切加压,在加压操作完成后,可有效维持加压效果,使得内固定术后骨折端紧密接触,为骨折愈合提供稳定、可靠的力学传导环境,促进骨折愈合,有效避免骨折延迟愈合、骨不连并发症的发生。(A gun type lifting forceps capable of effectively pressurizing fracture ends comprises a handle, a gun rod penetrates through the handle, a shifting piece is arranged inside the handle, a compression spring is arranged between the shifting piece and the handle and sleeved outside the gun rod, a turning component is rotatably connected inside the handle and used for buckling a trigger, the top of the trigger is abutted to extrude the lower end of the turning component, the upper end of the turning component is abutted to extrude the lower end of the shifting piece, the trigger drives the shifting piece to extrude the compression spring through the turning component, meanwhile, the shifting piece abuts against the top surface and the bottom surface of the gun rod and drives the gun rod to slide backwards, the shifting piece is changed from a vertical state into an inclined state after being extruded, then, the tail end of an intramedullary nail is pulled towards a near section through a traction part, accurate pressurization of the fracture ends is achieved, after pressurization operation is completed, pressurization effect can be effectively maintained, fracture ends are in close contact after internal fixation, stability is provided for fracture healing, Reliable mechanical conduction environment, promotes fracture healing, and effectively avoids delayed fracture healing and bone nonunion complications.)

1. The utility model provides a can effectively pressurize gun type pulling forceps of fracture broken ends which characterized in that: comprises a handle (1), a gun rod (2) passes through and is arranged inside the handle (1) along the axial direction in a sliding manner, the gun rod (2) passes through a shifting piece (3), the shifting piece (3) is arranged inside a first accommodating cavity of the handle (1), a compression spring (4) is arranged between the shifting piece (3) and the handle (1), the compression spring (4) is sleeved outside the gun rod (2), the shifting piece (3) is positioned at the front end of the compression spring (4), a trigger (6) is rotatably arranged at the front end of the handle (1), a turning component (5) is rotatably connected inside the first accommodating cavity of the handle (1), the turning component (5) is abutted against the front end of the shifting piece (3) and the handle (1), a trigger (6) is triggered, the top of the trigger (6) is abutted against the lower end of the turning component (5), the upper end of the turning component (5) is abutted against the lower end of the extrusion shifting piece (3), the trigger (6) drives the shifting piece (3) to extrude the compression spring (4) through the turning component (, meanwhile, the shifting piece (3) abuts against the top surface and the bottom surface of the gun rod (2) and drives the gun rod (2) to slide backwards, the vertical state of the shifting piece (3) is changed into an inclined state from a static state after being extruded, the gun rod (2) penetrates through the clamping piece (7), the clamping piece (7) is connected to the inner portion of the second accommodating cavity of the handle (1), the top of the clamping piece (7) is rotatably connected to the handle (1), a reset spring (8) is arranged between the clamping piece (7) and the handle (1), the clamping piece (7) abuts against the top surface and the bottom surface of the gun rod (2) to prevent the gun rod (2) from advancing, and when the reset spring (8) is extruded by the clamping piece (7), the clamping piece (7) is not in contact with the outer surface of the gun rod;

the front end of the gun rod (2) is connected with a traction part (10) through a universal component (9), and the traction part (10) is connected with the tail end of the intramedullary nail handle;

the front end of the handle (1) is arranged on the periphery of the gun rod (2) and is provided with a cylinder (11) in the radial direction, the gun rod (2) penetrates through the axis of the cylinder (11), the collision component (12) is connected to the outer side of the cylinder (11) through a connecting block (13) arranged at the tail end of the collision component, the other end of the collision component (12) is collided on the bone of a patient, and the connecting block (13) can do circumferential rotation motion relative to the cylinder (11) and can lock the position of the cylinder after rotation adjustment.

2. The gun-type lifting forceps for effectively compressing a fracture end according to claim 1, wherein: the drawing part (10) is a hook.

3. The gun-type lifting forceps for effectively compressing a fracture end according to claim 1, wherein: the universal assembly (9) is a universal joint with a locking function.

4. The gun-type lifting forceps for effectively compressing a fracture end according to claim 1, wherein: universal subassembly (9) include one end open-ended cavity pipe fitting (90), cavity pipe fitting (90) link firmly with barral of a gun (2) front end, cavity pipe fitting (90) inside is provided with slip post (91) and changes ball (92), cavity pipe fitting (90) opening side threaded connection has stop cap (93), stop cap (93) axial is provided with the through hole, tractive portion (10) one end is run through the through hole and is linked firmly with commentaries on classics ball (92), cavity pipe fitting (90) radially run through and is equipped with bolt (94), bolt (94) middle part is located cavity pipe fitting (90) inside eccentric connection and is had extrusion ball (95), rotation bolt (94), extrusion ball (95) extrusion slip post (91) and then extrusion commentaries on classics ball (92) with this locking tractive portion (10).

5. The gun-type lifting forceps for effectively compressing a fracture end according to claim 4, wherein: ball concave parts matched with the rotating balls (92) and the squeezing balls (95) are inwards arranged on two sides of the sliding column (91).

6. The gun-type lifting forceps for effectively compressing a fracture end according to claim 1, wherein: the diameter of the cavity pipe fitting (90) is smaller than that of the cylinder (11).

7. The gun-type lifting forceps for effectively compressing a fracture end according to claim 1, wherein: conflict part (12) including connecting block (13), connecting rod (120) and clamp spare (121), connecting block (13) are connected to rifle bar (2) cylinder (11) outside, clamp spare (121) are connected to connecting rod (120) front end.

8. The gun-type lifting forceps for effectively compressing a fractured tip of a bone as claimed in claim 7, wherein: the clamp member (121) comprises a first rotating half ring (1210) and a second rotating half ring (1211), the first rotating half ring (1210) is fixedly connected with the connecting rod (120), the second rotating half ring (1211) is hinged with the connecting rod (120) through a bolt, and the first rotating half ring (1210) and the second rotating half ring (1211) can be closed to form a hollow circular ring.

9. The gun-type lifting forceps for effectively compressing a fracture end according to claim 8, wherein: the magnet (1213) is embedded in the contact end surface of the first rotating semi-ring (1210) and the second rotating semi-ring (1211).

10. The gun-type lifting forceps for effectively compressing a fracture end according to claim 1, wherein: the handle (1) first hold the chamber and hold the chamber outside with the second and be equipped with detachable apron (14), apron (14) are connected in handle (1) outside, barral of a gun (2) end-to-end connection have and hold part (15).

Technical Field

The invention relates to the technical field of medical instruments, in particular to gun-type lifting forceps capable of effectively pressurizing a fracture broken end.

Background

Intramedullary nails have been widely used in limb fractures and have achieved good clinical efficacy. However, in the process of internal fixation of intramedullary nail, the fractured end of the fracture can not be effectively pressurized due to improper operation, so that the fractured end of the fracture has persistent separation, instability and rotation after the internal fixation, and finally the fracture can not be healed in the expected time, even the complications of bone nonunion, failure of internal fixation, and the like can occur.

At present, in the intramedullary nail internal fixation operation, the operation of pressurizing the fracture end generally adopts a mode of knocking back the tail end of the intramedullary nail. Before the locking nail, whether the fracture end has separation displacement is checked, and if the fracture end has separation, the distal locking nail is firstly used. After the distal locking nail is locked, the fracture part is observed under X-ray fluoroscopy, the compression of the fracture end is realized by knocking back the tail end of the intramedullary nail through a sliding hammer, and then the compression fixation is completed by the proximal locking nail. The principle is that the fracture end is extruded by collision to realize pressurization. However, the elastic force generated by the collision causes the secondary separation at the same time as the collision. After knocking back, the compression effect of the fractured end of the fracture cannot be maintained, and the fractured end of the fracture is easy to separate again when the screw is locked at the near end of the line.

Disclosure of Invention

The invention aims to solve the problems and the defects in the background technology, and provides a gun type lifting clamp capable of effectively pressurizing a fracture end, which can realize lifting operation and complete axial pressurization of the fracture end in an intramedullary nail internal fixation operation.

A gun type lifting forceps capable of effectively pressurizing fracture broken ends comprises a handle, a gun rod penetrates through the gun rod and is axially and slidably mounted inside the handle, the gun rod penetrates through a shifting piece, the shifting piece is arranged inside a first accommodating cavity of the handle, a compression spring is arranged between the shifting piece and the handle, the compression spring is sleeved outside the gun rod, the shifting piece is located at the front end of the compression spring, a trigger is rotatably mounted at the front end of the handle, a turning component is rotatably connected inside the first accommodating cavity of the handle and abuts against the shifting piece and the front end of the handle, the trigger is triggered, the top of the trigger abuts against and extrudes the lower end of the turning component, the upper end of the turning component abuts against and extrudes the lower end of the shifting piece, the trigger drives the shifting piece to extrude the compression spring through the turning component, meanwhile, the shifting piece abuts against the top surface and the bottom surface of the gun rod and drives the gun rod to slide backwards, the shifting piece is changed from a static vertical state into an inclined state, the top of the clamping piece is rotatably connected to the handle, a return spring is arranged between the clamping piece and the handle, the clamping piece is abutted against the top surface and the bottom surface of the gun rod to prevent the gun rod from advancing, and when the clamping piece extrudes the return spring, the clamping piece is not in contact with the outer surface of the gun rod, namely the clamping piece is changed from an inclined state to a vertical state after being extruded;

the front end of the gun rod is connected with a traction part through a universal component, and the traction part is connected with the tail end of the intramedullary nail handle;

the handle front end is located the rifle bar and is equipped with the cylinder in radial direction all around, and the rifle bar runs through cylinder axle center, and the connecting block that conflict part set up through its end is connected in the cylinder outside, and the conflict part other end is contradicted on patient's bone, and the connecting block structure is prior art, and the connecting block can be circumferential direction rotary motion for the cylinder to can lock its position after rotation regulation.

The invention has the beneficial effects that:

in the operation of treating the fracture of the long bone cadre of four limbs by intramedullary nail treatment, the gun-type pulling forceps can pull the far section of the fracture to the near section, realize the exact pressurization of the fracture end, after the pressurization operation is finished, the pressurization effect can be effectively maintained, so that the fracture end is in close contact after the internal fixation, a stable and reliable mechanical conduction environment is provided for the fracture healing, the fracture healing is promoted, and the occurrence of delayed healing of the fracture and complications of nonunion can be effectively avoided.

Drawings

FIG. 1 is a block diagram of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a cross-sectional view at a-a in fig. 3.

Fig. 5 is a partially enlarged schematic view of B in fig. 4.

Fig. 6 is a schematic view of the structure of the cover plate not attached to the handle.

Fig. 7 is a schematic diagram of the structure at C in fig. 6.

Fig. 8 is a schematic view of the opening and closing of the first and second rotating half rings.

Fig. 9 is a perspective view of the cover of the present invention not attached to the handle.

Fig. 10 is a schematic view of the trigger being depressed.

Fig. 11 is a schematic view of a push-down cartridge.

Detailed Description

Referring to fig. 1 to 11, a gun-type lifting clamp capable of effectively pressurizing a fracture end comprises a handle 1, a gun rod 2 penetrates through and is axially and slidably mounted inside the handle 1, the gun rod 2 penetrates through a shifting block 3, the shifting block 3 is arranged inside a first accommodating cavity of the handle 1, a compression spring 4 is arranged between the shifting block 3 and the handle 1, the compression spring 4 is sleeved outside the gun rod 2, the shifting block 3 is positioned at the front end of the compression spring 4, a trigger 6 is rotatably mounted at the front end of the handle 1, a direction-changing assembly 5 is rotatably connected inside the first accommodating cavity of the handle 1, the direction-changing assembly 5 is abutted against the shifting block 3 and the front end of the handle 1, the trigger 6 is triggered, the top of the trigger 6 is abutted against the lower end of the direction-changing assembly 5, the upper end of the direction-changing assembly 5 is abutted against and extrudes the lower end of the shifting block 3, the trigger 6 drives the shifting block 3 to extrude the compression spring 4 through the direction-changing assembly 5, and simultaneously, the, the pull sheet 3 is extruded and then changed into an inclined state from a static vertical state, the gun rod 2 penetrates through the clamping piece 7, the clamping piece 7 is connected inside a second accommodating cavity of the handle 1, the top of the clamping piece 7 is rotatably connected to the handle 1, a return spring 8 is arranged between the clamping piece 7 and the handle 1, the clamping piece 7 is abutted against the top surface and the bottom surface of the gun rod 2 to prevent the gun rod 2 from advancing, when the return spring 8 is extruded by the clamping piece 7, the clamping piece 7 is not in contact with the outer surface of the gun rod 2, namely the clamping piece 7 is extruded and then changed into the vertical state from the inclined state;

the front end of the gun rod 2 is connected with a traction part 10 through a universal component 9, and the traction part 10 is connected with the tail end of the intramedullary nail handle;

the front end of the handle 1 is arranged on the periphery of the gun rod 2, the cylinder 11 is arranged in the radial direction, the gun rod 2 penetrates through the axis of the cylinder 11, the collision component 12 is connected to the outer side of the cylinder 11 through a connecting block 13 arranged at the tail end of the collision component, the other end of the collision component 12 collides with the bone of a patient, the connecting block 13 is in the structure of the prior art, the connecting block 13 can do circumferential rotation motion relative to the cylinder 11, and the position of the connecting block can be locked after rotation adjustment.

More specifically, the pulling part 10 is a hook.

Furthermore, the gimbal assembly 9 is a gimbal with a locking function.

Furthermore, universal subassembly 9 include one end open-ended cavity pipe fitting 90, cavity pipe fitting 90 links firmly with 2 front ends of barral of a gun, cavity pipe fitting 90 is inside to be provided with slip post 91 and commentaries on classics ball 92, cavity pipe fitting 90 opening side threaded connection has stop cap 93, stop cap 93 axial is provided with the through hole, tractive portion 10 one end is run through the through hole and is linked firmly with commentaries on classics ball 92, cavity pipe fitting 90 radially runs through and is equipped with bolt 94, the inside eccentric connection that is located cavity pipe fitting 90 in the middle part of bolt 94 has extrusion ball 95, rotate bolt 94, extrusion ball 95 extrudees slip post 91 and then extrudees commentaries on classics ball 92 and guarantees that tractive portion 10 is locked with this, if tractive portion 10 is the couple, then couple one.

Furthermore, the diameter of the hollow tube 90 is smaller than the diameter of the cylindrical body 11, so as to ensure that the interference part 12 can be separated from the gun shaft 2 during the post-operation sterilization.

Furthermore, ball recesses are formed in two sides of the sliding column 91 and are matched with the rotating balls 92 and the pressing balls 95, so that the contact area between the sliding column 91 and the rotating balls 92 and the pressing balls 95 is increased, and the stability of the locking of the pulling part 10 is further improved.

Further, the interference part 12 includes a connecting piece 13, a connecting rod 120, and a clip 121, the connecting piece 13 is connected to the outside of the cylindrical body 11 of the gun shaft 2, and the clip 121 is connected to the front end of the connecting rod 120.

More specifically, the band member 121 includes a first rotating half ring 1210 and a second rotating half ring 1211, the first rotating half ring 1210 is fixedly connected to the connecting rod 120, the second rotating half ring 1211 is hinged to the connecting rod 120 by a bolt, the first rotating half ring 1210 and the second rotating half ring 1211 can be closed to form a hollow ring, and the purpose of fixedly connecting the first rotating half ring 1210 to the connecting rod 120 is to ensure that the first rotating half ring 1210 and the second rotating half ring 1211 do not rotate relative to the connecting rod 120 to slide when being pulled.

Further, the magnet 1213 is embedded in the contact end surface of the first rotating half ring 1210 and the second rotating half ring 1211.

Furthermore, the handle 1 is provided with a detachable cover plate 14 outside the first accommodating cavity and the second accommodating cavity, and the cover plate 14 can be connected to the outside of the handle 1 through screws.

Furthermore, the end of the gun rod 2 is connected with a holding member 15, and the holding member 15 may be a spherical member for easy grasping.

The use process of the invention is as follows:

when in use, the second rotating half ring 1211 of the interference component 12 is pulled to open a notch, the tail end of the intramedullary nail is sleeved on the inner sides of the first rotating half ring 1210 and the second rotating half ring 1211, the first rotating half ring 1210 and the second rotating half ring 1211 are in end surface contact after the sleeving is finished, the first rotating half ring 1210 and the second rotating half ring 1211 have the functions of limiting the relative radial movement of the whole gun type pulling clamp and the tail end of the intramedullary nail, preventing the radial movement of the whole gun type pulling clamp, the traction part 10 is connected with the tail end of the handle of the intramedullary nail, the interference component 12 is abutted against the surface of the proximal end of the bone, a medical worker pulls the trigger 6 along the direction D, at the moment, the upper end of the trigger 6 moves towards the direction F under the action of the rotating shaft E, the upper end of the trigger 6 extrudes the lower end of the direction changing component 5 towards the direction F, the upper end of the direction changing component 5 moves towards the direction G under the, the shifting piece 3 is contacted with the upper end and the lower end of the gun rod 2, the shifting piece 3 is changed from a vertical state to an inclined state, the gun rod 2 is driven to move towards the G direction, the compression spring 4 is compressed, and after the trigger 6 is loosened, the compression spring 4 resets under the action of the elasticity of the compression spring, and the shifting piece 3, the turning component 5 and the trigger 6 are driven to reset; trigger 6 is pulled repeatedly, can drive the spicule by barral of a gun 2 and continuously carry out the tractive to the G direction, and the universal subassembly 9 of barral of a gun 2 front end can adjust the direction of tractive portion 10, the operation of being convenient for is used.

After the operation is completed, the pulling part 10 is separated from the tail end of the intramedullary nail handle, so that the first rotating half ring 1210 and the second rotating half ring 1211 are separated from the tail end of the intramedullary nail. If make barral of a gun 2 to intramedullary nail tail end direction removal, move to P direction promptly, can carry out following operation, medical personnel press fastener 7 to the W direction, reset spring 8 is compressed this moment, fastener 7 upper end rotates to the W direction at the effect of pivot Y, fastener 7 and barral of a gun 2 upper end and lower extreme contactless, become vertical state by the tilt state promptly, push barral of a gun 2 to the P direction with the hand this moment, then barral of a gun 2 moves to the P direction, after moving suitable position, unclamp fastener 7 can.

During disinfection, the cover plate 14 is opened, the abutting part 12 is separated from the handle 1, the abutting part is detached into a plurality of parts, and disinfection is achieved more thoroughly.

Working principle of the invention

Fastener 7 slightly inclines under the quiescent condition, supports through reset spring 8's elasticity and holds top surface and the bottom surface at barral of a gun 2, prevents barral of a gun 2 and moves forward, and when pressing fastener 7 through the hand, fastener 7 can guarantee to be perpendicular relatively with barral of a gun 2, and barral of a gun 2 top surface can separate with fastener 7 with the bottom surface, realizes the free slip of barral of a gun 2.

During normal state, because compression spring 4's effect, make plectrum 3 perpendicular with barral of a gun 2, plectrum 3 does not contact with 2 top surfaces of barral of a gun and bottom surface, when trigger 6 begins to pull, plectrum 3 begins to incline gradually under diversion subassembly 5 effect, plectrum 3 begins to support the top surface and the bottom surface of holding barral of a gun 2, trigger 6's further pulling can drive plectrum 3 and barral of a gun 2 and remove backward, when loosening trigger 6, trigger 6's action is just opposite, because fastener 7's effect, prevent that barral of a gun 2 from advancing.