CN211723390U

CN211723390U - Femoral fracture internal fixation simulation device

Info

Publication number: CN211723390U
Application number: CN202020112166.3U
Authority: CN
Inventors: 魏炜
Original assignee: Nanjing Laiyite Electronic Technology Co ltd
Current assignee: Nanjing Laiyite Electronic Technology Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-10-23
Anticipated expiration: 2030-01-16

Abstract

The utility model discloses a femoral fracture internal fixation simulation device, the structure of which comprises an auxiliary sleeve, the utility model arranges the auxiliary sleeve above the intramedullary nail, the barrel is embedded and matched with the intramedullary nail, then the sleeve is pulled to adjust the swing direction through a universal ball valve until the sleeve is matched and supported with the proper position of the femur, a knob is rotated in the forward direction, the knob drives a bevel gear group to rotate, the bevel gear drives a screw rod to rotate, the screw rod is meshed with a screw groove at the inner side of a splint body, so that the splint body slowly moves down along a limiting groove until the splint body is jointed and clamped with the universal ball valve through an inner side clamping pad, the sleeve is prevented from rotating randomly, when the sleeve angle is needed to be adjusted continuously, the universal ball valve is loosened through the reverse rotation matching of the parts according to the reverse rotation knob, the sleeve supporting angle is adjusted according to the height of the damaged part of the femur of, the beneficial effect of improving the practicality of equipment.

Description

Femoral fracture internal fixation simulation device

Technical Field

The utility model relates to a femoral fracture protection technical field, concretely relates to femoral fracture internal fixation emulation device.

Background

The femoral fracture refers to the fracture from the lower part of the femoral head to the base part of the femoral neck, is a common fracture, which accounts for about 53 percent of the proximal femoral fracture and about 3.6 percent of the total fracture, and is commonly seen in old people, but in recent years, the femoral neck fracture of young patients caused by high-energy injuries such as traffic accidents is common, because of special fracture parts of the femoral neck fracture, blood supply after fracture is easy to destroy, local shearing force is large, fracture nonunion and femoral head necrosis are easy to occur, the treatment difficulty is high, internal fixation is still the most common treatment method for the femoral neck fracture, along with the deep research of hip biomechanics and the continuous development of internal fixation objects, particularly hollow nails, the internal fixation treatment effect of the femoral neck fracture is obviously improved, 6 percent of patients have fracture nonunion phenomena, even if the fracture occurs, the incidence rate of femoral head ischemia necrosis is still high, about 22.5%; therefore, there is still a need for further improvements in the internal fixation treatment of femoral neck fractures.

When the femoral fracture internal fixation simulation device used before, the intramedullary nail and the femur were laminated, the screw and the femur below were run through fixedly, and be convenient for carry out the location support to patient's femur, current femoral fracture internal fixation simulation device, inconvenient according to the impaired position altitude mixture control sleeve support angle of patient's femur, equipment practicality was poor.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the prior art not enough, provide a femoral fracture internal fixation analogue means now, solve current femoral fracture internal fixation analogue means, inconvenient according to the impaired position height adjustment sleeve support angle of patient's thighbone, the poor problem of equipment practicality.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a femoral fracture internal fixation simulation device, which comprises an intramedullary nail,

the auxiliary sleeve is used for adjusting the supporting point of the device until the supporting point is jointed with the corresponding damaged part of the femur;

the end socket is used for sealing and protecting the upper end and the lower end of the intramedullary nail;

further, the auxiliary sleeve is provided with 2.

Furthermore, a first screw is inserted at the bottom of the intramedullary nail, a second screw is arranged at the bottom end of the first screw, an auxiliary sleeve is embedded at the top of the intramedullary nail, and end heads are embedded at the upper end and the lower end of the intramedullary nail.

Further, the auxiliary sleeve comprises a barrel body, a knob, a bevel gear set, a screw rod, a clamping plate, a limiting groove, a universal ball valve and a sleeve, wherein the knob is inserted into the right end of the barrel body, the left end of the knob is in running fit with the bevel gear set, the middle of the bevel gear set is in running fit with the screw rod, the upper end and the lower end of the screw rod are in threaded engagement with the clamping plate, the right end of the clamping plate slides up and down along the limiting groove, the universal ball valve is arranged on the inner side of the left side of the barrel body, the left end of the universal ball valve is in.

Further, the clamping plate comprises a clamping plate body, a thread groove and a clamping pad, the thread groove is formed in the right end of the clamping plate body, the clamping pad is laid on the inner diameter of the clamping plate body, and the inner side of the thread groove is embedded with the screw rod.

Furthermore, the bevel gear set consists of two bevel gears, and the bevel gears in the bevel gear set are vertically placed.

Furthermore, the outer diameter threads of the screw rod are distributed oppositely, and the outer diameter threads of the screw rod are matched with the clamping plate.

Further, splint and spacing groove all are provided with 4, and splint and spacing groove upper and lower sliding range is 0 to 2 cm.

Furthermore, the universal ball valve and the sleeve are matched to rotate within the range of 0-360 degrees, and threads are distributed around the outer diameter of the left end of the sleeve.

Furthermore, the intramedullary nail is made of titanium alloy material, and has high strength, good corrosion resistance and high heat resistance.

(III) advantageous effects

Compared with the prior art, the utility model, have following advantage:

the method has the advantages that: the utility model discloses a femoral fracture internal fixation emulation device, through set up auxiliary sleeve above the intramedullary nail, with barrel and intramedullary nail embedding cooperation, pull the sleeve after that and adjust its swing position through universal ball valve and support until with the suitable position of thighbone handing, forward rotating knob, the knob drives bevel gear group and rotates, bevel gear drives the screw rod and rotates, screw rod and splint intermeshing, cause splint to slowly move down clamping universal ball valve along the spacing groove, prevent that the sleeve from rotating at will, reached according to the impaired position altitude mixture control sleeve support angle of patient's thighbone, the practical beneficial effect of improve equipment.

The method has the advantages that: the utility model discloses a femoral fracture internal fixation emulation device, through set up splint in the screw rod outside, screw rod and the inboard thread groove intermeshing of splint body cause the splint body to slowly move down along the spacing groove, until splint body through inboard clamp pad and universal ball valve laminating clamping, reach the firm clamping to the universal ball valve clamping.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the intramedullary nail of the present invention;

FIG. 3 is a schematic cross-sectional view of the auxiliary sleeve according to the present invention;

fig. 4 is a schematic structural view of the bevel gear set of the present invention;

fig. 5 is a schematic view of the splint structure of the present invention.

In the figure: the intramedullary nail comprises an intramedullary nail-1, a first screw-2, a second screw-3, an auxiliary sleeve-4, a tip-5, a cylinder-41, a knob-42, a bevel gear group-43, a screw-44, a splint-45, a limit groove-46, a universal ball valve-47, a sleeve-48, a splint body-451, a screw groove-452 and a clamping pad-453.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a femoral fracture internal fixation simulation device: comprises an intramedullary nail 1, a nail head and a nail head,

the auxiliary sleeve 4 is used for adjusting the supporting point of the device until the supporting point is jointed with the corresponding damaged part of the femur;

the end 5 is used for sealing and protecting the upper end and the lower end of the intramedullary nail 1;

wherein the auxiliary sleeve 4 is provided with 2.

The bottom of the intramedullary nail 1 is inserted with a first screw 2, the bottom end of the first screw 2 is provided with a second screw 3, the top of the intramedullary nail 1 is embedded with an auxiliary sleeve 4, and the upper end and the lower end of the intramedullary nail 1 are embedded with end heads 5.

The auxiliary sleeve 4 comprises a cylinder body 41, a knob 42, a bevel gear set 43, a screw 44, a clamping plate 45, a limiting groove 46, a universal ball valve 47 and a sleeve 48, the knob 42 is inserted into the right end of the cylinder body 41, the left end of the knob 42 is in running fit with the bevel gear set 43, transmission fit of equipment is facilitated, the middle of the bevel gear set 43 is in running fit with the screw 44, the upper end and the lower end of the screw 44 are in threaded engagement with the clamping plate 45, synchronous sliding of the clamping plate 45 is facilitated, the right end of the clamping plate 45 slides up and down along the limiting groove 46, sliding range of the clamping plate 45 is facilitated to be limited, the universal ball valve 47 is arranged on the inner side of the left side of the cylinder body 41, rotation angle of the sleeve 48 is facilitated to be adjusted, the left end of.

The clamping plate 45 comprises a clamping plate body 451, a thread groove 452 and a clamping pad 453, the thread groove 452 is formed in the right end of the clamping plate body 451, so that the clamping plate body 451 can slide up and down, the clamping pad 453 is laid on the inner diameter of the clamping plate body 451, so that the universal ball valve 47 can be prevented from sliding randomly, and the inner side of the thread groove 452 is embedded with the screw 44.

The bevel gear set 43 is composed of two bevel gears, and the bevel gears in the bevel gear set 43 are vertically arranged, so that transmission matching of parts is facilitated.

Wherein, the external diameter screw thread of screw rod 44 is opposite form distribution, and screw rod 44 external diameter screw thread and splint 45 phase-match are favorable to the synchronous slip of splint 45.

Wherein, splint 45 and spacing groove 46 all are provided with 4, and splint 45 and spacing groove 46 upper and lower sliding range is 0 to 2cm, are favorable to restricting splint 45's sliding range.

Wherein, universal ball valve 47 and sleeve 48 cooperation rotation range are 0 to 360 degrees, and sleeve 48 left end external diameter encircles and distributes and have the screw thread, are favorable to adjusting sleeve 48's swing angle.

Wherein, the intramedullary nail 1 is made of titanium alloy material, and has high strength, good corrosion resistance and high heat resistance.

The intramedullary nail 1 belongs to an orthopedic internal fixation instrument in medical instruments, and the structure of the intramedullary nail comprises an intramedullary nail rod, a near-end locking screw hole is arranged at the near end of the intramedullary nail rod, a decompression plane is arranged on the surface of the intramedullary nail rod, more than one decompression plane which is long-strip-shaped is arranged on the surface of the intramedullary nail rod, the decompression plane can extend from the near end of the intramedullary nail rod to the far end of the intramedullary nail rod, and a locking screw positioning screw hole and a connecting sleeve positioning groove are arranged at the near end of.

The utility model relates to a femoral fracture internal fixation simulation device, which has the following working principle;

firstly, when in use, firstly, the femoral fracture internal fixation simulation device is moved to a proper position, when the femoral fracture area of a patient needs medical rescue, the intramedullary nail 1 is inserted into and attached to the femur of the patient, and the lower part of the intramedullary nail 1 is fixedly penetrated through the femur through a first screw 2 and a second screw 3 respectively;

secondly, when the upper part of the intramedullary nail 1 is butted with a femur, the auxiliary sleeve 4 is arranged above the intramedullary nail 1, the cylinder body 41 is embedded and matched with the intramedullary nail 1, then the sleeve 48 is pulled to adjust the swinging direction of the sleeve through the universal ball valve 47 until the sleeve is matched and supported with the proper position of the femur, the knob 42 is rotated forwardly, the knob 42 drives the bevel gear set 43 to rotate, the bevel gear 43 drives the screw rod 44 to rotate, the screw rod 44 is meshed with the screw groove 452 on the inner side of the splint body 451, so that the splint body 451 slowly moves downwards along the limiting groove 46 until the splint body 451 is jointed and clamped with the universal ball valve 47 through the inner clamping pad 453, and the sleeve 48 is prevented from rotating freely;

thirdly, when needs continue adjusting sleeve 48 angle, according to the aforesaid, the contra-rotation knob 42, knob 42 drives bevel gear set 43 and rotates, bevel gear 43 drives screw rod 44 and rotates, screw rod 44 and the inboard thread groove 452 intermeshing of splint body 451, cause splint body 451 to slowly shift up along spacing groove 46, it fills up 453 and universal ball valve 47 separation to press from both sides solid pad up to splint body 451 and inboard, convenient to use person pulls sleeve 48 and carries out all-round regulation through universal ball valve 47, reached according to the impaired position height adjustment sleeve support angle of patient's thighbone, the beneficial effect of improve equipment practicality.

The basic principle and the main characteristics of the utility model and the advantages of the utility model have been shown and described above, and the utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the record of the description with the drawing, and the concrete connection mode of each part all adopts conventional means such as ripe bolt rivet among the prior art, welding, and machinery, part and equipment all adopt prior art, conventional model, and conventional connection mode in the prior art is adopted in addition to circuit connection, and the details are not repeated here.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a femoral fracture internal fixation simulation device, includes intramedullary nail (1), its characterized in that still includes:

the auxiliary sleeve (4) is used for adjusting the supporting point of the device until the supporting point is jointed with the corresponding damaged part of the femur;

the end head (5) is used for sealing and protecting the upper end and the lower end of the intramedullary nail (1);

wherein the auxiliary sleeve (4) is provided with 2.

2. The femoral fracture internal fixation simulation device of claim 1, wherein: the bottom of the intramedullary nail (1) is inserted with a first screw (2), the bottom end of the first screw (2) is provided with a second screw (3), the top of the intramedullary nail (1) is embedded with an auxiliary sleeve (4), and the upper end and the lower end of the intramedullary nail (1) are embedded with end heads (5).

3. The femoral fracture internal fixation simulation device of claim 1, wherein: auxiliary sleeve (4) are including barrel (41), knob (42), bevel gear group (43), screw rod (44), splint (45), spacing groove (46), universal ball valve (47) and sleeve (48), it has knob (42) to peg graft at barrel (41) right-hand member, knob (42) left end and bevel gear group (43) normal running fit, bevel gear group (43) middle part and screw rod (44) normal running fit, both ends and splint (45) thread engagement about screw rod (44), splint (45) right-hand member slides from top to bottom along spacing groove (46), barrel (41) left side inboard is provided with universal ball valve (47), universal ball valve (47) left end and sleeve (48) normal running fit, barrel (41) external diameter and intramedullary nail (1) embedding cooperation.

4. The femoral fracture internal fixation simulation device of claim 3, wherein: the clamping plate (45) comprises a clamping plate body (451), a thread groove (452) and a clamping pad (453), the thread groove (452) is formed in the right end of the clamping plate body (451), the clamping pad (453) is laid on the inner diameter of the clamping plate body (451), and the inner side of the thread groove (452) is embedded with the screw (44).

5. The femoral fracture internal fixation simulation device of claim 3, wherein: the bevel gear set (43) is composed of two bevel gears, and the bevel gears in the bevel gear set (43) are vertically placed.

6. The femoral fracture internal fixation simulation device of claim 3, wherein: the outer diameter threads of the screw rods (44) are distributed oppositely, and the outer diameter threads of the screw rods (44) are matched with the clamping plates (45).

7. The femoral fracture internal fixation simulation device of claim 3, wherein: splint (45) and spacing groove (46) all are provided with 4, and splint (45) and spacing groove (46) upper and lower sliding range is 0 to 2 cm.

8. The femoral fracture internal fixation simulation device of claim 3, wherein: the universal ball valve (47) and the sleeve (48) are matched to rotate within the range of 0-360 degrees, and threads are distributed around the outer diameter of the left end of the sleeve (48).