CN2525958Y - Position compensating mechanism for sighting device of intramedullary nail - Google Patents
Position compensating mechanism for sighting device of intramedullary nail Download PDFInfo
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- CN2525958Y CN2525958Y CN02205495U CN02205495U CN2525958Y CN 2525958 Y CN2525958 Y CN 2525958Y CN 02205495 U CN02205495 U CN 02205495U CN 02205495 U CN02205495 U CN 02205495U CN 2525958 Y CN2525958 Y CN 2525958Y
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- fork
- intramedullary pin
- pin
- fixed
- intramedullary
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Abstract
The utility model discloses a position compensating mechanism for sighting device of intramedullary nail, belonging to the technical field of medical apparatus. The utility model comprises a swing rod, a hinged pin base and a swing rod fixing unit, wherein, the hinged pin base is fixed on a frame of an intramedullary nail aimer, and the rear end of the swing rod is connected with the hinged pin base, while the front end of the swing rod has a positioning hole. The swing rod fixing unit can fix the swing rod. The position compensating mechanism relating to the utility model is capable of compensating the deflection about the position of the positioning hole cased by distortion of the intramedullary nail, allowing the positioning hole to position accurately and quickly and reducing operation time. The position detecting mechanism is applicable no matter the intramedullary nail is distorted or not.
Description
Technical field
The utility model discloses a kind of position compensation mechanism of intramedullary pin sight, belong to technical field of medical instruments.
Background technology
When treatment tubular bone fracture patient, the position that often will use the fixing fracture of intramedullary pin after intramedullary pin inserts medullary cavity, also needs with bolt osseous tissue and intramedullary pin to be fixedly connected.Therefore on the relevant position on the osseous tissue, hole according to the position of fixed groove on the intramedullary pin or fixing hole.In normal circumstances, after intramedullary pin inserts medullary cavity, generally all certain deformation can take place, make fixed groove or fixing hole on the intramedullary pin depart from the origin-location, should position according to the physical location of intramedullary pin in medullary cavity when therefore holing on osseous tissue.The position of the locating hole on the intramedullary pin sight at present commonly used is fixed, and it can only be corresponding with the position of fixed groove on the intramedullary pin that not have to be out of shape in the ideal or fixing hole.Therefore, under the situation of intramedullary pin distortion, this intramedullary pin sight can not compensate the intramedullary pin distortion and the position deviation of the locating hole that causes, causes the location inaccurate.The doctor will adjust the location situation of intramedullary pin sight by the X-ray ray examination, positions the hole site deviation compensation, to prevent boring out of position.The doctor checks that the adjustment used time of position of positioning hole is long, and the doctor will be subjected to a large amount of X-ray lines irradiations, and it is healthy to influence the doctor, causes operating time long, brings misery to the patient.When the intramedullary pin distortion was big, this intramedullary pin sight can not compensate the position deviation of locating hole, therefore can't use.
The utility model content
The technical problems to be solved in the utility model is to make the intramedullary pin sight can compensate the position deviation of the locating hole that causes because of the intramedullary pin distortion, locating hole on the intramedullary pin sight can accurately be located, reduce the used time of location, reduce the doctor and accept X-ray line exposure dose.Reduce the patient suffering, reduce the postoperative infection probability.
The technical solution of the utility model is that the position compensation mechanism of intramedullary pin sight is made up of fork, hinge pin seat and fork fixed mechanism, the fork rear end is connected with hinge pin seat by bearing pin, the front end of fork has locating hole, and the fork fixed mechanism can make the fork fixed-site.
Described fork fixed mechanism is that the front end at fork has the locking plug, support front end at the intramedullary pin sight has open slot, front end at open slot is equipped with clamping screw, the locking plug can insert in the open slot, clamping screw can draw open slot in, clamp the locking plug, make the fork fixed-site.
Described fork rear end is the opening trough_like structure, has steady pin on the outside of each frid, and steady pin can insert in the fixed pin holes of hinge pin seat.
On fork, be fixed with magnetic piece.
Described fork is made up of two bars, and wherein a bar is enclosed within another root bar, is fixed by lock-screw between two bars.
Described fork fixed mechanism is made up of connecting rod and bolt, and the connecting rod two ends are connected with the support of fork front end with the intramedullary pin sight respectively, and use bolting, have the position adjustments hole on connecting rod.
On the described fork collapsible form is housed, has locating hole on the collapsible form.
The position compensation mechanism of the intramedullary pin sight that this utility model is designed has following advantage:
1. can compensate the position of positioning hole deviation that causes because of the intramedullary pin distortion.Have fork in the position compensation mechanism of intramedullary pin sight, locating hole is positioned at the front end of fork, and its position can be moved with fork.When moderate finite deformation takes place in intramedullary pin in medullary cavity, pass through rotational swing rod, locating hole on the fork is aimed at the fixed groove or the fixing hole of intramedullary pin after the distortion, compensate the position of positioning hole deviation that is produced between undeformed intramedullary pin position and the intramedullary pin position, distortion back, make locating hole can on osseous tissue, accurately determine bore position.
2. rational in infrastructure, easy and simple to handle, can reduce the positioning action time, reduce the doctor and accept the X-ray exposure dose.Because swing-bar mechanism is simple in structure, can compensate the position of positioning hole deviation quickly and easily, therefore can reduce the positioning action time, adjust the time thereby shorten the inspection of doctor under the X-ray irradiation, reduce the X-ray exposure dose that the doctor accepts, help doctor's health.Reduce the patient suffering, reduce the postoperative infection probability.
Description of drawings
Fig. 1 is a kind of front view of position compensation mechanism of intramedullary pin sight.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the A-A cutaway view of Fig. 1.
Fig. 5 be the position compensation mechanism of intramedullary pin sight shown in Figure 1 after intramedullary pin is bent downwardly distortion, position the state diagram of hole site compensation.
Fig. 6 is the front view of the position compensation mechanism of another kind of intramedullary pin sight.
Fig. 7 is the vertical view of Fig. 6.
Fig. 8 is the left view of Fig. 6.
Fig. 9 is the B-B cutaway view of Fig. 7.
Figure 10 be the position compensation mechanism of intramedullary pin sight shown in Figure 6 after intramedullary pin is bent downwardly distortion, position the state diagram of hole site compensation.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is described in further detail.
Embodiment 1
The structural representation of the position compensation mechanism of the described intramedullary pin sight of present embodiment is seen Fig. 1-shown in Figure 5.
What number in the figure 1 was represented is the support of intramedullary pin sight, and support 1 is connected with intramedullary pin 4 with connector 3 by connector 2.
The position compensation mechanism of intramedullary pin sight is made up of hinge pin seat 5, fork 6 and fork fixed mechanism.5 of hinge pin seats are made up of two titanium plates, and they are screwed the both sides at support 1 respectively.The rear end of fork 6 also is made up of two titanium plates, forms the open slot shape, has steady pin 7 in the frid outside, and the rear end of fork 6 is connected with hinge pin seat 5.The fork fixed mechanism is by the locking plug 8 that is connected the fork front end, form at the open slot 9 of support 1 front end with at the clamping screw 10 of open slot 9 front ends, locking plug 8 can insert in the open slot 9, clamping screw 10 can draw open slot 9 both sides cell walls in, clamp locking plug 8, fork 6 is fixed on the desired position.Collapsible form 11 is installed on fork 6, and collapsible form 11 usefulness bolts 12 are fixed on the fork 6, have locating hole 13 on the collapsible form 11, and the position of locating hole 13 is corresponding with fixed groove or fixing hole position on the corresponding intramedullary pin 4.Front end at fork 6 is fixed with magnetic piece shape 14, in order to hold feeler.
When reality was used, intramedullary pin 4 inserted in the medullary cavity, and support 1 links to each other with intramedullary pin 4 with connector 3 by connector 2.No matter whether intramedullary pin 4 be out of shape, its physical location in medullary cavity is surveyed by the door shape feeler 15 on the intramedullary pin sight, a feeler 16 on the door shape feeler 15 contacts with intramedullary pin 4 by an inspecting hole on the osseous tissue, another feeler 17 on the door shape feeler 15 contacts with fork 6, determine the compensated position after fork 6 relative intramedullary pins 4 are out of shape, make the locating hole 13 on the template 11 that is installed on the fork 6 corresponding, thereby determine the bore position on osseous tissue with fixed groove or fixing hole position on the intramedullary pin 4.Can on osseous tissue, hole by locating hole 13.For the intramedullary pin 4 of different-diameter, only need to change different templates 11, can determine the position of different locating hole 13.The titanium plate that constitutes the opening trough_like of fork 6 rear ends can inwardly draw in, is convenient to the installation of the steady pin 7 on the fork 6.
When Fig. 1 represents that intramedullary pin 4 is not out of shape, the user mode of position compensation mechanism, when Fig. 5 represents intramedullary pin 4 distortion downwards, the user mode of position compensation mechanism.
Use this position compensation mechanism can compensate the position of positioning hole deviation rapidly and accurately, reduce operating time, reduce the doctor and under the X-ray irradiation, check the time of adjustment work, accept the X-ray exposure dose thereby reduce the doctor.Reduce the patient suffering, reduce the postoperative infection probability.
Embodiment 2
The structural representation of the position compensation mechanism of the described intramedullary pin sight of present embodiment is seen Fig. 6-shown in Figure 10.
What number in the figure 18 was represented is the support of intramedullary pin sight, and support 18 is connected with intramedullary pin 4 by connector 29.
The position compensation mechanism of intramedullary pin sight is made up of hinge pin seat 19, fork 20 and fork fixed mechanism.Hinge pin seat 19 is installed on the support 18, and fork 20 is made up of two bars in front and back 21 and 22, and in the trepanning of bar 21 insertion rods 22, bar 21 and bar 22 are connected and fixed by lock(ing) bolt 23, so the length of fork 20 can be regulated as required.The rear end of fork 20 is connected with hinge pin seat 19 by bearing pin 24, and fork 20 front ends are told two sections forks, and one of them is stuck and has locating hole 13, and another is stuck and has connecting hole.Support 18 also divaricates, and one of them is stuck and has locating hole 25, and another is stuck and has connecting hole.The locating hole 13 of fork 20 front ends is corresponding with the fixed groove or the fixing hole position of intramedullary pin 4 front ends, and the fixed groove at the locating hole 25 on the support 18 and intramedullary pin 4 rear portions or the position of fixing hole are corresponding.The fork fixed mechanism is made up of connecting rod 26 and bolt 27, has several connecting holes on the connecting rod 26, with the intramedullary pin 4 that is applicable to different length.
When reality was used, intramedullary pin 4 inserted in the medullary cavity, and support 18 links to each other with intramedullary pin 4 by connector 29.No matter whether intramedullary pin 4 be out of shape, its physical location in medullary cavity, survey by the feeler 28 that is installed in fork 20 front ends, feeler 28 contacts with intramedullary pin 4 by an inspecting hole on the osseous tissue, the length of feeler 28 is corresponding with locating hole 13 positions on the fork 20, make locating hole 13 corresponding, thereby determine the bore position on osseous tissue with fixed groove or fixing hole position on the intramedullary pin 4.Can on osseous tissue, hole by locating hole 13.
When adjusting the position of fork 20, unclamp clamping screw 23, the length of scalable fork 20 makes fork 20 can be suitable for different use locations.After adjust finishing, can fastening clamping screw 23, fork 20 length are fixed, and tight a bolt 27, make fork 20 fixed-site.
When Fig. 6 represents that intramedullary pin 4 is not out of shape, the user mode of position compensation mechanism, when Figure 10 represents intramedullary pin 4 distortion downwards, the user mode of position compensation mechanism.
Use this position compensation mechanism can compensate the position deviation of locating hole rapidly and accurately, reduce positioning time, reduce the doctor and accept the X-ray exposure dose.Reduce the patient suffering, reduce the postoperative infection probability.
Claims (7)
1. the position compensation mechanism of an intramedullary pin sight, it is characterized in that: be made up of fork, hinge pin seat and fork fixed mechanism, the fork rear end is connected with hinge pin seat by bearing pin, and the front end of fork has locating hole, and the fork fixed mechanism can make the fork fixed-site.
2. the position compensation mechanism of intramedullary pin sight according to claim 1, it is characterized in that: described fork fixed mechanism is that the front end at fork has the locking plug, support front end at the intramedullary pin sight has open slot, front end at open slot is equipped with clamping screw, the locking plug can insert in the open slot, clamping screw can draw open slot in, clamps the locking plug, makes the fork fixed-site.
3. the position compensation mechanism of intramedullary pin sight according to claim 2 is characterized in that: described fork rear end is the opening trough_like structure, has steady pin on the outside of each frid, and steady pin can insert in the fixed pin holes of hinge pin seat.
4. the position compensation mechanism of intramedullary pin sight according to claim 2 is characterized in that: be fixed with magnetic piece on fork.
5. the position compensation mechanism of intramedullary pin sight according to claim 1 is characterized in that: be made up of two bars at described fork, wherein a bar is enclosed within another root bar, is fixed by lock-screw between two bars.
6. the position compensation mechanism of intramedullary pin sight according to claim 5, it is characterized in that: described fork fixed mechanism is made up of connecting rod and bolt, the connecting rod two ends are connected with the support of fork front end with the intramedullary pin sight respectively, and use bolting, have the position adjustments hole on connecting rod.
7. according to the position compensation mechanism of claim 1,2 or 5 described intramedullary pin sights, it is characterized in that: on described fork, collapsible form is housed, has locating hole on the collapsible form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02205495U CN2525958Y (en) | 2002-03-04 | 2002-03-04 | Position compensating mechanism for sighting device of intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02205495U CN2525958Y (en) | 2002-03-04 | 2002-03-04 | Position compensating mechanism for sighting device of intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2525958Y true CN2525958Y (en) | 2002-12-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02205495U Expired - Fee Related CN2525958Y (en) | 2002-03-04 | 2002-03-04 | Position compensating mechanism for sighting device of intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2525958Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103654932A (en) * | 2013-12-17 | 2014-03-26 | 周玉梅 | Orthopaedics department steel plate implanting device |
| CN111000615A (en) * | 2019-12-05 | 2020-04-14 | 张希江 | Intramedullary nail positioning drill jig frame |
-
2002
- 2002-03-04 CN CN02205495U patent/CN2525958Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103654932A (en) * | 2013-12-17 | 2014-03-26 | 周玉梅 | Orthopaedics department steel plate implanting device |
| CN111000615A (en) * | 2019-12-05 | 2020-04-14 | 张希江 | Intramedullary nail positioning drill jig frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021218 Termination date: 20100304 |