CN202044333U - Intramedullary nail sighting equipment - Google Patents
Intramedullary nail sighting equipment Download PDFInfo
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- CN202044333U CN202044333U CN2011200720409U CN201120072040U CN202044333U CN 202044333 U CN202044333 U CN 202044333U CN 2011200720409 U CN2011200720409 U CN 2011200720409U CN 201120072040 U CN201120072040 U CN 201120072040U CN 202044333 U CN202044333 U CN 202044333U
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- Prior art keywords
- rod
- intramedullary pin
- hole
- aiming
- positioning
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- 230000007704 transition Effects 0.000 claims description 17
- 238000011161 development Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 abstract description 20
- 238000005452 bending Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 230000000642 iatrogenic effect Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to intramedullary nail sighting equipment including an intramedullay nail sighting device and a connecting handle used to connect with an intramedullay nail. The connecting handle connects with the intramedullay nail sighting device in a fixed manner. The intramedullay nail sighting device includes a non-opaque sighting rod, an adjusting assembly used to drive the sighting rod to rotate and a sighting member. The connecting handle is provided with a bending portion. The adjusting assembly is connected to the bending portion in a fixed manner. One end of the sighting rod is connected to the adjusting assembly through a rotation shaft. An axis of the rotation shaft is parallel to an axis of a lock hole in the intramedullay nail. The adjusting assembly drives the sighting rod to rotate along a radial direction of the rotation shaft. A positioning through hole for alignment with the lock hole in the intramedullay nail is arranged in the other end of the sighting rod. The sighting member is inserted into the positioning through hole. The utility model provides intramedullary nail sighting equipment which has a sighting rod with a positioning through hole of which the position is adjustable and can make the positioning through hole directly for alignment with the the lock hole in the intramedullay nail disposed in a bone cavity.
Description
Technical field
This utility model relates to a kind of intramedullary pin sighting device, belongs to medical instruments field.
Background technology
At present, when treatment tubulose fracture patient, often to use fixedly fracture site of intramedullary pin, promptly after intramedullary pin inserts bone cavity, on osseous tissue, bore lock hole, the reuse pinning is fixed together osseous tissue and intramedullary pin, under normal conditions, after long intramedullary pin is implanted bone cavity, variant because of individual physiologic radian, the distortion that can not expect, the problem of an aiming that just produces like this can take place in bone cavity with reference to the intramedullary pin of general radian design, more common intramedullary pin point technique roughly has three kinds now: with the spacing point technique of locating rod, free-hand upward nail technology and magnetic force location point technique, and all there is defective in these three kinds of technology.
The spacing point technique of locating rod: the aiming body of rod of existing intramedullary pin sighting device is fixed, the position that causes the positioning through hole on it also is fixed, it can only with ideal in do not have the distortion intramedullary pin on the lockhole position corresponding, therefore, under the situation that intramedullary pin deforms, the lockhole position that nails in the lock hole that gets out on osseous tissue by this positioning through hole and the bone cavity internal medullary mass is not corresponding, therefore need on osseous tissue, do skin incision, bore one again and be the locating hole of 90 ° of angles substantially with lock hole, again locating rod is inserted and prop up intramedullary pin in the locating hole, the intramedullary pin of distortion will be corrected by advancing locating rod, adopt this Technology Need on osseous tissue, to bore two holes, the patient has to bear extra iatrogenic wound, the operating procedure of operation is also numerous and diverse relatively, in addition, if the deformation direction of intramedullary pin is not the direction of insertion of locating rod, locating rod just can not effectively be corrected the deformation of intramedullary pin, and sighting device is also with whole misalignment.
Free-hand upward nail technology: the doctor need continue to use X ray to look for the position, hole on osseous tissue, and continues to use X ray will produce a large amount of radiation, thereby brings expendable injury for doctor and patient, and this technology is also very high to doctor's experience requirement simultaneously in this.
Magnetic force location point technique: need to do otch at the distal locking nail Position Approximate in advance, and to fully cut, peel off soft tissues such as osseous tissue lateral fascia and muscle, not so being easy to that generation is passed in the aiming of sleeve and drill bushing disturbs, detector also must be close to cortical bone as far as possible, otherwise the induction of magnetic force can be influenced, so the patient has to bear extra iatrogenic wound, simultaneously also brought great misery to the patient, and the volume of used probe magnetic piece is less, when facing, will respond to inefficacy, cause the whole misalignment of sighting device than large deformation.
The utility model content
The purpose of this utility model is to overcome the defective that prior art exists, and provides on a kind of its sighting bar the positioning through hole position adjustable and can directly this positioning through hole be aimed at the intramedullary pin sighting device that nail on lockhole in bone cavity internal medullary mass.
The technical scheme that its technical problem that solves this utility model adopts is: a kind of intramedullary pin sighting device, comprise intramedullary pin sight and the connection handle that is used to be connected intramedullary pin that is connected with this intramedullary pin sight, described intramedullary pin sight comprises the aiming body of rod of printing opacity, be used to drive adjusting part and the sight unit that the aiming body of rod rotates, described connection handle has a kink, described adjusting part is connected on the described kink, the described aiming body of rod one end is rotatably connected on the described adjusting part by rotating shaft, the axis of lockhole is parallel on the axis of described rotating shaft and the intramedullary pin, described adjusting part drives the radially rotation of the aiming body of rod along described rotating shaft, have on the described aiming body of rod other end be used for intramedullary pin on the aligned positioning through hole of lockhole, described sight unit is plugged in this positioning through hole.
Further, in order to make sight unit under the irradiation of X ray, can accurately aim at lockhole on the intramedullary pin, described sight unit is made of radiotransparen transmission element and roentgenopaque " ten " word development part that is arranged in the transmission element, described " ten " word development part is made of two pin intersections of developing, these two develop pin all with the described aiming body of rod on the axis normal of positioning through hole, and the dead in line of its cross point and this positioning through hole.
Further, under x-ray bombardment, in order to prevent that aiming at the body of rod shelters from intramedullary pin obstruction observation, the described aiming body of rod is by the radiotransparen aiming body of rod.
Further, in order to be suitable for the intramedullary pin of different size, described connection handle is made of handle body and bar shaped or "T"-shaped transition arm, described transition arm one end and handle body are connected and constitute this and be connected the kink of handle, have some installing holes of arranging along its length direction on the described transition arm, also have installing hole on the described adjusting part, described adjusting part and transition arm are connected by fixed screw.
Further, rotate along rotating shaft in order to drive the aiming body of rod, described adjusting part is made of with the fixed block with vertical kink the bulb threaded rod, described bulb threaded rod is made of the screw thread body of rod and the ball head and the adjusting knob that are connected in screw thread body of rod two ends respectively, described fixed block is connected on the above-mentioned transition arm, the described aiming body of rod is rotatably connected on the described fixed block by rotating shaft, the vertical bending part of described fixed block is in a side of the described aiming body of rod, and have tapped through hole on it, the described screw thread body of rod is threaded in the described tapped through hole, and described ball head is connected with the aiming body of rod.
Further, in order to prevent that aiming at the body of rod rocks, also be fixed with baffle plate on the described fixed block, an end of the described aiming body of rod is between fixed block and baffle plate.
Further, for the fit clearance between the ball head that can make the bulb threaded rod and the aiming body of rod reaches minimum, the end inside that the described aiming body of rod is connected with described ball head has a shape, the big or small inner chamber that matches with this ball head, and described ball head is embedded in the described inner chamber; Have a passage that is communicated with its inner chamber on the described aiming body of rod, in this passage, be placed with the silica gel that is used to fill described ball head and aims at the fit clearance of the body of rod, be fixed with the connector that is used to withstand above-mentioned silica gel in described passway.
The beneficial effects of the utility model: this utility model has solved the defective that exists in the background technology, (1) compares with the spacing point technique of locating rod, need not to use locating rod, therefore need not to do skin incision, more need not on patient's osseous tissue, to bore locating hole, reduced iatrogenic wound to the patient, positioning through hole on this utility model aiming body of rod can be directly with the bone cavity internal medullary mass in nail on lockhole and aim at, can directly on osseous tissue, get out and the intramedullary pin corresponding lock hole in hole site of locking, simplify operating procedure; And the aiming body of rod is two-way adjustable, so the positioning through hole position on it is also two-way adjustable, can carry out adjustment on both direction, and no matter how the deformation intramedullary pin is out of shape, and can both effectively aim at para-position, and cooperation X ray transmission accuracy rate can be up to 100%.(2) compare with the free-hand nail technology that goes up, this utility model is when using X ray, the doctor can or leave operating room after isolating the steel wall, after stopping x-ray bombardment, medical personnel enter to develop according to screen and are adjusted accordingly, and this shows that this utility model in use, the doctor need not be subjected to the radiation of X ray, and doctor's experience is not had too high request.(3) compare with magnetic force location point technique, this utility model can be tackled the bigger situation of intramedullary pin deformation, and the patient need not to bear extra iatrogenic wound.
Description of drawings
Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.
Fig. 1 is the main TV structure sketch map of preferred embodiment of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the local enlarged diagram of adjusting part and sighting bar attachment structure;
Fig. 4 is the A-A cutaway view of Fig. 3;
Fig. 5 is the vertical view of Fig. 3;
Fig. 6 is the B-B cutaway view of Fig. 5;
Fig. 7 is the structure for amplifying sketch map of sight unit;
Fig. 8 is the vertical view of Fig. 7.
Wherein: 1, intramedullary pin sight; 1-1, the aiming body of rod; 1-2, adjusting part; 1-21, bulb threaded rod; 1-211, the screw thread body of rod; 1-212, ball head; 1-213, adjusting knob; 1-22, fixed block; 1-221, vertical kink; 1-23, baffle plate; 1-3, sight unit; 1-31, transmission element; 1-32, " ten " word development part; 1-321, development pin; 2, connect the hands handle; 2-1, handle body; 2-2, transition arm; 3, intramedullary pin; 3-1, lockhole; 4, rotating shaft; 5, fixed screw; 6, silica gel; 7, connector.
The specific embodiment
As Fig. 1～a kind of intramedullary pin sighting device shown in Figure 8, comprise intramedullary pin sight 1 and the connection handle 2 that is used to be connected intramedullary pin 3 that is connected with this intramedullary pin sight 1, described intramedullary pin sight 1 comprises the aiming body of rod 1-1 that made by saturating X ray material, is used to drive adjusting part 1-2 and the sight unit 1-3 that aiming body of rod 1-1 rotates.Described connection handle 2 is made of handle body 2-1 and bar shaped or "T"-shaped transition arm 2-2, as shown in Figure 1, described transition arm 2-2 one end and handle body 2-1 one end are connected by screw and constitute this and be connected the kink of handle 2, the handle body 2-1 other end is used for being connected with intramedullary pin 3, described transition arm 2-2 and intramedullary pin 3 be arranged in parallel, have some installing holes of arranging along its length direction that are used to connect adjusting part 1-2 on the described transition arm 2-2.Described adjusting part 1-2 is made of with the fixed block 1-22 with vertical kink 1-221 bulb threaded rod 1-21, described bulb threaded rod 1-21 is made of screw thread body of rod 1-211 and the ball head 1-212 and the adjusting knob 1-213 that are connected in screw thread body of rod 1-211 two ends respectively, described ball head 1-212 and screw thread body of rod 1-211 integral type constitute, described adjusting knob 1-213 and screw thread body of rod 1-211 clamping, have installing hole on the described fixed block 1-22, one of them installing hole on this installing hole and the above-mentioned transition arm 2-2 is connected by fixed screw 5.As Fig. 3～shown in Figure 6, described aiming body of rod 1-1 one end (near-end) is rotatably connected on the fixed block 1-22 by rotating shaft 4, the axis of lockhole 3-1 is parallel on the axis of described rotating shaft 4 and the intramedullary pin 3, the vertical kink 1-221 of fixed block 1-22 is positioned at the side of aiming body of rod 1-1, and have tapped through hole on it, described screw thread body of rod 1-211 is threaded in this tapped through hole, described ball head 1-212 and aiming body of rod 1-1 are connected, can screw thread body of rod 1-211 axially be moved back and forth along it by forward or reverse adjusting knob 1-213, thereby drive the radially rotation of aiming body of rod 1-1 along rotating shaft 4.Also be fixed with on the vertical kink 1-221 of described fixed block 1-22 and be used to push down aiming body of rod 1-1 and prevent the baffle plate 1-23 that it rocks, the end (near-end) of described aiming body of rod 1-1 is between fixed block 1-22 and baffle plate 1-23, have on the described aiming body of rod 1-1 other end (far-end) be used for intramedullary pin 3 on the aligned positioning through hole of lockhole 3-1, described sight unit 1-3 is plugged in this positioning through hole, as Fig. 7, shown in Figure 8, this sight unit 1-3 is made of transmission element 1-31 and " ten " word development part 1-32 that is arranged in this transmission element 1-31, described transmission element 1-31 is made by radiotransparen material, described " ten " word development part 1-32 is made by roentgenopaque material, it is made of two pin 1-321 intersections of developing, these the two pin 1-321 that develop go up the axis normal of positioning through hole with described aiming body of rod 1-1, and the dead in line of its cross point and this positioning through hole.
The ball head 1-212 of bulb threaded rod 1-21 and the preferred connected mode that aims at body of rod 1-1: as Fig. 4 with shown in 6, the end inside that described aiming body of rod 1-1 is connected with described ball head 1-212 has a shape, the inner chamber that size matches with this ball head 1-212, described ball head 1-212 is embedded in the described inner chamber, have a passage that is communicated with its inner chamber on the described aiming body of rod 1-1, in this passage, be placed with the silica gel 6 that is used to fill described ball head 1-212 and aims at the fit clearance of body of rod 1-1, be fixed with the connector 7 that is used to withstand above-mentioned silica gel 6 in described passway.
The concrete operations step: (one) is connected in intramedullary pin 3 earlier and connects on the handle 2; (2) select the installing hole on the transition arm 2-2 according to the intramedullary pin 3 (mainly being the difference of length) of different size, and adjusting part 1-2 is connected with selected installing hole, guarantee that with this axis that aims at the positioning through hole on the body of rod 1-1 can overlap substantially with the axis of lockhole 3-1 on the intramedullary pin 3; (3) intramedullary pin 3 is implanted bone cavity; (4) the X ray light beam irradiates sight unit 1-3 of the axially parallel of use and positioning through hole, whether can observe positioning through hole by " ten " word development part 1-32 thus aims at lockhole 3-1 on the intramedullary pin 3, if misalignment then rotation aiming body of rod 1-1 according to the observation, cross point until " ten " word development part 1-32 is dropped on the axis of lockhole 3-1 on the intramedullary pin 3, aims at the last positioning through hole of the body of rod 1-1 this moment and aims at lockhole 3-1 on the intramedullary pin 3.
Because sight unit 1-3 is detachably connected in the positioning through hole, after para-position is finished, 1-3 extracts with this sight unit, change the pinning sleeve, on osseous tissue, bore lock hole by the pinning sleeve, the reuse pinning is fixed together osseous tissue and intramedullary pin 3, has just finished the aiming and the locking process of whole intramedullary pin.
Should be appreciated that specific embodiment described above only is used to explain this utility model, and be not used in qualification this utility model.Conspicuous variation of being extended out by spirit of the present utility model or change still are among the protection domain of the present utility model.
Claims (8)
1. intramedullary pin sighting device, comprise intramedullary pin sight (1) and the connection handle (2) that is used to be connected intramedullary pin (3) that is connected with this intramedullary pin sight (1), it is characterized in that: described intramedullary pin sight (1) comprises the aiming body of rod (1-1) of printing opacity, be used for driving adjusting part (1-2) and the sight unit (1-3) that the aiming body of rod (1-1) rotates, described connection handle (2) has a kink, described adjusting part (1-2) is connected on the described kink, the described aiming body of rod (1-1) end is rotatably connected on the described adjusting part (1-2) by rotating shaft (4), the axis of described rotating shaft (4) is parallel with the axis that intramedullary pin (3) is gone up lockhole (3-1), described adjusting part (1-2) drives the radially rotation of the aiming body of rod (1-1) along described rotating shaft (4), have on the described aiming body of rod (1-1) other end and be used for going up the aligned positioning through hole of lockhole (3-1) with intramedullary pin (3), described sight unit (1-3) is plugged in this positioning through hole.
2. a kind of intramedullary pin sighting device according to claim 1, it is characterized in that: described sight unit (1-3) is by radiotransparen transmission element (1-31) and be arranged on interior roentgenopaque " ten " word development parts (1-32) formation of transmission element (1-31), described " ten " word development parts (1-32) are made of two pin (1-321) intersections of developing, these two pins (1-321) that develop are all gone up the axis normal of positioning through hole with the described aiming body of rod (1-1), and the dead in line of its cross point and this positioning through hole.
3. a kind of intramedullary pin sighting device according to claim 2 is characterized in that: the described aiming body of rod (1-1) is by the radiotransparen aiming body of rod.
4. according to claim 2 or 3 described a kind of intramedullary pin sighting devices, it is characterized in that: described connection handle (2) is made of handle body (2-1) and bar shaped or "T"-shaped transition arm (2-2), described transition arm (2-2) end and handle body (2-1) are connected and constitute this and be connected the kink of handle (2), have some installing holes of arranging along its length direction on the described transition arm (2-2), also have installing hole on the described adjusting part (1-2), described adjusting part (1-2) is connected by fixed screw (5) with transition arm (2-2).
5. a kind of intramedullary pin sighting device according to claim 4, it is characterized in that: described adjusting part (1-2) is made of with the fixed block with vertical kink (1-221) (1-22) bulb threaded rod (1-21), described bulb threaded rod (1-21) is by the screw thread body of rod (1-211) and be connected in the ball head (1-212) at the screw thread body of rod (1-211) two ends respectively and adjusting knob (1-213) constitutes, described fixed block (1-22) is connected on the above-mentioned transition arm (2-2), the described aiming body of rod (1-1) is rotatably connected on the described fixed block (1-22) by rotating shaft (4), the vertical kink (1-221) of described fixed block (1-22) is positioned at a side of the described aiming body of rod (1-1), and have tapped through hole on it, the described screw thread body of rod (1-211) is threaded in the described tapped through hole, and described ball head (1-212) is connected with the aiming body of rod (1-1).
6. a kind of intramedullary pin sighting device according to claim 5, it is characterized in that: also be fixed with on the described fixed block (1-22) be used to push down the aiming body of rod (1-1) prevent its baffle plate that rocks (1-23), an end of the described aiming body of rod (1-1) is positioned between fixed block (1-22) and the baffle plate (1-23).
7. a kind of intramedullary pin sighting device according to claim 5, it is characterized in that: the end inside that the described aiming body of rod (1-1) is connected with described ball head (1-212) has a shape, the big or small inner chamber that matches with this ball head (1-212), and described ball head (1-212) is embedded in the described inner chamber.
8. a kind of intramedullary pin sighting device according to claim 7, it is characterized in that: have a passage that is communicated with its inner chamber on the described aiming body of rod (1-1), in this passage, be placed with the silica gel (6) that is used to fill described ball head (1-212) and aims at the fit clearance of the body of rod (1-1), be fixed with the connector (7) that is used to withstand above-mentioned silica gel (6) in described passway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200720409U CN202044333U (en) | 2011-03-18 | 2011-03-18 | Intramedullary nail sighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200720409U CN202044333U (en) | 2011-03-18 | 2011-03-18 | Intramedullary nail sighting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202044333U true CN202044333U (en) | 2011-11-23 |
Family
ID=44984660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200720409U Expired - Fee Related CN202044333U (en) | 2011-03-18 | 2011-03-18 | Intramedullary nail sighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202044333U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102670296A (en) * | 2011-03-18 | 2012-09-19 | 创生医疗器械（中国）有限公司 | Intramedullary nail aiming device |
| CN103876821A (en) * | 2012-12-21 | 2014-06-25 | 瑞特医疗技术公司 | Trajectory Guide |
-
2011
- 2011-03-18 CN CN2011200720409U patent/CN202044333U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102670296A (en) * | 2011-03-18 | 2012-09-19 | 创生医疗器械（中国）有限公司 | Intramedullary nail aiming device |
| CN102670296B (en) * | 2011-03-18 | 2014-10-22 | 创生医疗器械（中国）有限公司 | Intramedullary nail aiming device |
| CN103876821A (en) * | 2012-12-21 | 2014-06-25 | 瑞特医疗技术公司 | Trajectory Guide |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20150318 |
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| EXPY | Termination of patent right or utility model |