CN209059408U - A kind of Medullary fixation device guide pin - Google Patents
A kind of Medullary fixation device guide pin Download PDFInfo
- Publication number
- CN209059408U CN209059408U CN201820277991.1U CN201820277991U CN209059408U CN 209059408 U CN209059408 U CN 209059408U CN 201820277991 U CN201820277991 U CN 201820277991U CN 209059408 U CN209059408 U CN 209059408U
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- proximal end
- guide rod
- fixation device
- tail cap
- medullary fixation
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Abstract
The utility model discloses a kind of Medullary fixation device guide pins, the Medullary fixation device guide pin includes tail cap, adjusts section and guide rod, the tail cap matches with nail proximal top aperture main in marrow, the adjusting section connect for upper end with tail cap lower end surface cylindric, cylindrical outer side surface is provided with the external screw thread to match with nail proximal end internal screw thread main in marrow, it adjusts section lower end to connect with guide rod upper end, the lower end of the guide rod can withstand the proximal end pinning.Compared with prior art, the beneficial effect is that, the Medullary fixation device can be used as the tail cap of Medullary fixation device with guide pin, play the role of sealing of performing the operation, head can not only play guiding function, facilitate the installation in surgical procedure, proximal end pinning can be also withstood, prevents the proximal end pinning from moving back nail.
Description
Technical field
The utility model relates to surgical operating instrument fields, and in particular to a kind of Medullary fixation device guide pin.
Background technique
As aging of population aggravates, the increased population of the elderly, and the elderly and it is frequently present of osteoporosis problem, always
Year people's respond decline, muscle of hip protectiveness is poor, is easy to fracture under the effect of external force, associated documents report,
The ratio that intertrochanteric fracture accounts for Hip Fracture is up to 50%, and due to the architectural characteristic at this, operative treatment is currently generally acknowledged
Optimal treatment mode.
Chinese patent (CN2011200614876) discloses a kind of near end of thighbone nail stick pinning system, and the system is by leading
Nail, the hollow self-taped type pinning in proximal end, distal end self-taped type pinning and main nail tail cap composition, wherein it is main nail be in elongated tubular, main nail it is upper
End is thicker, and for cooperating with the hollow self-taped type pinning in proximal end, the lower part of main nail is thinner, is used for and distal end self tapping pinning cooperates.Into
After row operation is in use, main nail lower part is vertically inserted into the pulp cavity in femur, respectively by the hollow self-taped type pinning screw-in in proximal end
Main to nail on portion, distal end self-taped type pinning screws in main nail lower end, and screws in main nail tail cap in the upper end of main nail, to reach to generation
The femur of fracture implements fixed therapeutic effect.
Since the grasping force of the hollow self-taped type pinning in proximal end is limited, the hollow self-taped type in proximal end may occur for use for a long time
The phenomenon that pinning exits influences surgical effect.
Chinese patent (CN2016207391104) discloses a kind of near end of thighbone Medullary fixation device, and described device includes
Main nail in marrow, proximal end pinning, os integumentale screw compress pinning and tail cap, and main nail includes the proximal end of angled setting in the marrow
And distal end, the proximal end are equipped with the first through hole that cooperate with proximal end pinning, the distal end is with the cooperated with os integumentale screw
Two through-holes.It is performed the operation in use, being sequentially loaded into main nail, proximal end pinning and os integumentale screw in marrow, then the main nail in the marrow
It is sequentially loaded into the threaded hole of upper end and compresses pinning and tail cap, so that the compression pinning lower end compresses the proximal end pinning, institute
It states tail cap to be connected through a screw thread with threaded hole, while compressing the compression pinning.
Although the relatively pervious device of this structure is additionally arranged compression pinning more, it can play compress institute to a certain extent
The effect for stating proximal end pinning is played the role of preventing proximal end pinning from moving back nail.But this structure deposits problem both ways, a side
Face, it is described to be difficult to accurately be put into the corresponding position of main oncomelania pit in marrow when compressing pinning installation, and perform the operation remove when also very
Hardly possible is taken out；On the other hand, this tail cap is implanted into main nail difficulty in marrow due to patient body position or patient's experience etc., often difficult
So that tail cap screw thread is engaged with intramedullary nail screw thread, difficulty is screwed in, and out of alignment, or even generates lesion, shadow after implantation soft tissue
Therapeutic effect is rung, and in the course of surgery once tail cap occurs to inclined situation, finally it is easy to appear being not fixed firmly, tail
The problem of cap is prominent or even falls off.
Utility model content
To overcome existing technological deficiency, the utility model provides a kind of Medullary fixation device guide pin, the guide pin
Tail portion can be used as the tail cap of Medullary fixation device, play the role of sealing of performing the operation, and head can not only play guiding function, convenient
Installation in surgical procedure can also withstand the proximal end pinning, prevent the proximal end pinning from moving back nail.
To achieve the above objectives, it is achieved using following technical scheme:
A kind of Medullary fixation device guide pin, the Medullary fixation device include main nail and the proximal end for tiltedly wearing its proximal end in marrow
Pinning, sealing of the Medullary fixation device with guide pin for nail main in marrow proximal end head, the Medullary fixation device guide pin
Including tail cap, adjust section and guide rod, the tail cap and match with nail proximal top aperture main in marrow, the adjusting section for upper end and
Tail cap lower end surface connects cylindric, and the external screw thread that cylindrical outer side surface is provided with and main nail proximal end internal screw thread matches in marrow is adjusted
Segment lower end is connect with guide rod upper end, and the lower end of the guide rod can withstand the proximal end pinning.
Specifically, when carrying out Medullary fixation operation, first successively by main nail and proximal end in the marrow of the Medullary fixation device
Pinning installs, then the Medullary fixation device is installed main nail proximal end head in marrow with guide pin.The utility model provides
A kind of Medullary fixation device guide pin, since its tail portion is the tail cap that can block main nail head in marrow, head is can be direct
Withstand the guide rod of proximal end pinning, and contact with the proximal end pinning during being inserted into guide pin it is fixed before, can due to its long enough
Facilitating doctor during operation as guiding makes tail cap be directed at the aperture on main nail proximal end head in the marrow, has both played to marrow in this way
The sealing effect on interior main nail proximal end head, and installation process of performing the operation is simple, and can prevent the proximal end pinning from moving back nail.
Further, the tail cap upper surface is provided with for making that internal and external threads engage to match with screwing tool
One screws structure.When carrying out Medullary fixation operation, need to be reliably fixed using mechanical be just able to achieve, in the tail cap upper surface
Setting first screws structure, and doctor can be facilitated to screw fixation to tail cap realization using screwing tool.
Further, described first structure is screwed as interior multi-panel counterbore, be located at tail cap upper-center.Preferably, described more
Face counterbore is positive six face shapes, and this structure is relatively conventional in the market, and preparation is simple.
Further, the guide rod diameter is no more than tune segment diameter.In the utility model, it is being inserted into the Medullary fixation
When device guide pin, sequentially enter main needle in the marrow is guide rod, adjusts section and tail cap, and the guide rod diameter is no more than adjusting
Section diameter can realize the normal mounting in surgical procedure.
Further, the guide rod upper end is fixedly connected with section is adjusted, and lower end is in match with proximal end pinning contact position
Elliptic cone.It should be noted that the contact position of the proximal end pinning and guide rod is equipped with and guide bar head in the technical program
The card slot that portion matches.In the utility model, the Medullary fixation device with guide pin be by it is described adjust section external screw thread with
Main nail internal screw thread matches and fixed in marrow, therefore, needs to continue rotation in fixation procedure, the lower end of the guide rod is arranged
To be each to the identical conical surface, it can be ensured that rotate to any angle all and can effectively withstand the card slot on the pinning of proximal end, realize effectively solid
It is fixed.Specifically, the lower end of the guide rod is set as elliptic cone, with the general conical surface the difference is that, not sharp vertex,
This structure is not easy to be worn, and makes to be deteriorated with the matching of the proximal end pinning upper recess surface.
Further, the adjusting section can be connect with guide rod with respect to center axis rotation, and the lower end of the guide rod is in and proximal end is locked
The concave edge that nail contact position matches.Preferably, the concave edge surface is set as rough surface or other modes make its surface rub
It is larger to wipe coefficient.In the technical program, the contact position of the proximal end pinning and guide rod is not provided with the card slot to match with guide rod,
But the concave edge by the way that lower end of the guide rod to be arranged to match with proximal end pinning contact position, realization guide rod are consolidated with proximal end pinning
It is fixed.Since proximal end pinning is tiltedly to be through main nail proximal end in marrow, then the concave edge of the lower end of the guide rod setting and proximal end pinning are realized solid
Fixed matched orientation determines, i.e., after institute's proximal end pinning is fixed, flange has and only one optimum position and proximal end pinning are realized
Secure lock, however, need to continue rotation adjusting section keeps it close with nail main in marrow when installing the Medullary fixation device guide pin
End is fixed, the adjustings section and guide rod can opposite center axis rotation connect, to guarantee that lower end of the guide rod is recessed when rotating adjusting section
Edge and proximal end pinning are opposing stationary, so can ensure that no matter adjust section how to rotate can all realize guide rod securely withstand proximal end lock
Nail, prevents it from moving back nail.
Further, the tail cap and adjusting section are equipped with through-hole guide rod upper end in the axial direction and are equipped with through-hole corresponding position
Adjust guide rod orientation second screws structure.Specifically, rotation, which adjusts section, to be made when being inserted into the Medullary fixation device guide pin
It is fixed with nail main in marrow proximal end, be may cause the guide rod position and is deviateed the orientation to match with proximal end pinning.This is practical new
In type, the tail cap and adjusting section are equipped with through-hole in the axial direction, and guide rod upper end and through-hole corresponding position, which are equipped with, adjusts guide rod side
The second of position screws structure when rotating the adjusting section, if the guide rod deviates, can pass through screwing tool from the through-hole,
Structure is screwed by second again and adjusts guide rod orientation, makes lower end of the guide rod and proximal end pinning location matches, and then the proximal end pinning
It is firmly fixed.
Further, described second structure is screwed as interior multi-panel counterbore.Preferably, the multi-panel counterbore is positive six face shapes,
This structure is relatively conventional in the market, and preparation is simple.
The utility model provides a kind of Medullary fixation device guide pin, and the Medullary fixation device guide pin includes tail
Cap, adjusting section and guide rod, the tail cap match with nail proximal top aperture main in marrow, and the adjusting section is under upper end and tail cap
End face connects cylindric, and cylindrical outer side surface is provided with the external screw thread to match with nail proximal end internal screw thread main in marrow, adjusts under section
End is connect with guide rod upper end, and the lower end of the guide rod can withstand the proximal end pinning.Compared with prior art, its advantages exist
In the Medullary fixation device can be used as the tail cap of Medullary fixation device with guide pin, play the role of sealing of performing the operation, head is not only
Guiding function can be played, facilitates the installation in surgical procedure, can also withstand proximal end pinning, prevents the proximal end pinning from moving back nail.
Detailed description of the invention
Fig. 1 is the assembling structure schematic diagram of embodiment 1；
Fig. 2 is the structural schematic diagram of embodiment 1；
Fig. 3 is the structural schematic diagram of embodiment 2.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, with reference to the accompanying drawing to the utility model
Embodiment is described in more detail.
Embodiment 1
As shown in Figure 1, 2, a kind of Medullary fixation device guide pin 300, the Medullary fixation device are present embodiments provided
Including the proximal end pinning 200 for following closely 100 and tiltedly wear its proximal end main in marrow, the Medullary fixation device is with guide pin 300 for main in marrow
The sealing on 100 proximal end heads is followed closely, Medullary fixation device guide pin 300 includes tail cap 310, adjusts section 320 and guide rod 330,
The tail cap 310 matches with 100 proximal top apertures of main nail in marrow, and the adjusting section 320 is upper end and 310 lower end surface of tail cap
Cylindric, the external screw thread that cylindrical outer side surface is provided with and 100 proximal end internal screw threads of main nail match in marrow of connection, adjusting section 320
Lower end is connect with 330 upper end of guide rod, and 330 lower end of guide rod can withstand the proximal end pinning 200.
Further, 310 upper surface of tail cap, which is provided with, with what screwing tool matched is used to that internal and external threads to be made to engage
First screw structure 311.
Further, described first structure 311 is screwed as interior positive six face counterbore, be located at 310 upper-center of tail cap.
Further, 330 diameter of guide rod, which is less than, adjusts 320 diameter of section.
Further, 330 upper end of guide rod is fixedly connected with section 320 is adjusted, and lower end is in contact position with proximal end pinning 200
Set the elliptic cone to match.
When carrying out Medullary fixation operation, first successively by nail 100 main in the marrow of the Medullary fixation device and proximal end pinning
200 install, then the Medullary fixation device guide pin 300 is installed 100 proximal end heads of main nail in marrow.Installation process
In, using screwing tool by positive six faces shape counterbore in the tail cap 310, directly by entire Medullary fixation device guide pin
300 screw in, until the 330 lower end elliptic cone of guide rod withstands the card slot to match with 200 contact position of proximal end pinning.
Embodiment 2
As shown in figure 3, present embodiments providing a kind of Medullary fixation device guide pin 300, the Medullary fixation device packet
The main proximal end pinning 200 followed closely 100 and tiltedly wear its proximal end in marrow is included, the Medullary fixation device is with guide pin 300 for main nail in marrow
The sealing of 100 proximal ends head, Medullary fixation device guide pin 300 include tail cap 310, adjust section 320 and guide rod 330, institute
It states tail cap 310 to match with 100 proximal top apertures of main nail in marrow, the adjusting section 320 is that upper end and 310 lower end surface of tail cap connect
What is connect is cylindric, and cylindrical outer side surface is provided with and the external screw thread that 100 proximal end internal screw threads of main nail match in marrow, adjusts under section 320
End is connect with 330 upper end of guide rod, and 330 lower end of guide rod can withstand the proximal end pinning 200.
Further, 310 upper surface of tail cap, which is provided with, with what screwing tool matched is used to that internal and external threads to be made to engage
First screw structure 311.
Further, described first structure 311 is screwed as interior positive six face counterbore, be located at 310 upper-center of tail cap.
Further, 330 diameter of guide rod is no more than adjusting 320 diameter of section.
Further, the adjusting section 320 can be connect with guide rod 330 with respect to center axis rotation, and 330 lower end of guide rod is in
The concave edge to match with 200 contact position of proximal end pinning.
Further, the tail cap 310 and adjusting section 320 are equipped with through-hole, 330 upper end of guide rod and through-hole pair in the axial direction
It answers position to be equipped with the second of adjusting 330 orientation of guide rod and screws structure 312.
Further, described second structure 312 is screwed as interior positive six face counterbore.
When carrying out Medullary fixation operation, first successively by nail 100 main in the marrow of the Medullary fixation device and proximal end pinning
200 install, then the Medullary fixation device guide pin 300 is installed 100 proximal end heads of main nail in marrow.Installation process
In, using screwing tool by positive six face counterbore in the tail cap 310, the tail cap 310 is revolved together with section 320 is adjusted
Enter, if 310 upper surface of tail cap is equal with the upper end of nail 100 main in marrow at this time, and can not be further threaded into, then the guide rod
330 lower end concave edges have firmly withstood the proximal end pinning 200, that is, are installed；If 310 upper surface of tail cap is than nail main in marrow
100 is prominent, then illustrates that the 330 lower end concave edge of guide rod deviates the orientation to match with 200 contact position of proximal end pinning, this
When use another screwing tool again, 330 orientation of guide rod is adjusted by the positive six face counterbore of 330 upper end of guide rod, so that can be further
It screws in tail cap 310 and adjusts section 320, until keeping 310 upper surface of tail cap equal with the upper end of nail 100 main in marrow, and can not
It is further threaded into, then 330 lower end flange of guide rod has firmly withstood the proximal end pinning 200, that is, is installed.
It obviously, is not the restriction to the utility model although the utility model is disclosed with above-described embodiment.Any
The those of ordinary skill in field without departing from the spirit and scope of the utility model, can do on the basis of the above description
Possible change and modification out.Therefore, the protection scope of the utility model should be with claims institute circle of the utility model
Subject to fixed range.
Claims (6)
1. a kind of Medullary fixation device guide pin, the Medullary fixation device includes main nail and the proximal end lock for tiltedly wearing its proximal end in marrow
Nail, sealing of the Medullary fixation device with guide pin for nail main in marrow proximal end head, which is characterized in that the Medullary fixation dress
Setting with guide pin includes that tail cap, adjusting section and guide rod, the tail cap match with nail proximal top aperture main in marrow, the adjusting section
Connect for upper end with tail cap lower end surface it is cylindric, cylindrical outer side surface be provided with match with nail proximal end internal screw thread main in marrow it is outer
Screw thread adjusts section lower end and connect with guide rod upper end, and the lower end of the guide rod can withstand the proximal end pinning；
The guide rod upper end is fixedly connected with section is adjusted, and lower end is in the elliptic cone to match with proximal end pinning contact position, or
The adjusting section can be connect with guide rod with respect to center axis rotation, and the lower end of the guide rod is in match with proximal end pinning contact position
Concave edge.
2. a kind of Medullary fixation device guide pin according to claim 1, which is characterized in that the tail cap upper surface setting
Have and screws structure with first for engaging internal and external threads that screwing tool matches.
3. a kind of Medullary fixation device guide pin according to claim 2, which is characterized in that described first, which screws structure, is
Interior multi-panel counterbore is located at tail cap upper-center.
4. described in any item a kind of Medullary fixation device guide pins according to claim 1 ~ 3, which is characterized in that the guide rod is straight
Diameter is no more than tune segment diameter.
5. a kind of Medullary fixation device guide pin according to claim 1, which is characterized in that the tail cap and adjusting section edge
Axis direction is equipped with through-hole, guide rod upper end and through-hole corresponding position and screws structure equipped with adjust guide rod orientation second.
6. a kind of Medullary fixation device guide pin according to claim 5, which is characterized in that described second, which screws structure, is
Interior multi-panel counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820277991.1U CN209059408U (en) | 2018-02-26 | 2018-02-26 | A kind of Medullary fixation device guide pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820277991.1U CN209059408U (en) | 2018-02-26 | 2018-02-26 | A kind of Medullary fixation device guide pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209059408U true CN209059408U (en) | 2019-07-05 |
Family
ID=67088096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820277991.1U Active CN209059408U (en) | 2018-02-26 | 2018-02-26 | A kind of Medullary fixation device guide pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209059408U (en) |
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2018
- 2018-02-26 CN CN201820277991.1U patent/CN209059408U/en active Active
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