CN1446518A - Compression fastener in narrow of thighbone - Google Patents
Compression fastener in narrow of thighbone Download PDFInfo
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- CN1446518A CN1446518A CN 03112338 CN03112338A CN1446518A CN 1446518 A CN1446518 A CN 1446518A CN 03112338 CN03112338 CN 03112338 CN 03112338 A CN03112338 A CN 03112338A CN 1446518 A CN1446518 A CN 1446518A
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- needle
- intramedullary needle
- femur
- bone intramedullary
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Abstract
An intramedullary pressing fixator for femur has an intramedullary needle with radical far-end and near-end locking screw holes. The said needle is composed of a far-end intramedullary needle and a near-end one which consists of upper fine segment for installing rotation-preventing sleeve tube, middle thick segment and lower screw segment for connecting far-end intramedullary needle. A locating sleeve is installed to said fine segment. Its advantages are accurate location without X-ray fluoroscopy, high integrity, and high effect on preventing relative rotation and bending.
Description
Technical field
The present invention relates to a kind of femur marrow inner fixer, pressurization holder in a kind of femur marrow of more specifically saying so.
Background technology
Femur is the thickest long bone of human body, and muscle group is thick strong around the bone.After because of exogenous injury, clinical Therapeutic Method is to adopt internal fixation steel plate and Flos Mume intramedullary needle at first, because fixedly the activity of fracture site and muscle group is taken exercise and can not be taken into account, after the fracture site healing, muscle group is degenerated because of not taking exercise for a long time, causes the patient not walk.In recent years, adopt external fixer or intramedullary nail with nail to fix more,, have influence on the functional exercise of muscle group equally because the external long spiro nail of fix bone has limited the activity of muscle group on the external fixer to Fracture of femur; Adopt fixedly fracture site of intramedullary nail with nail, no matter be closed reduction fixedly or open reduction fix, because backshank is away from set terminal, must rely on C type arm x actinoscopy X machine, behind the self-locking nail hole on the aiming backshank, insert self-locking nail again in the self-locking nail hole, this just makes operation doctor and patient be exposed to fully under the x x radiation x, causes the injury to human body.In order to solve the difficult localized problem of intramedullary nail with nail far-end, producer quite a lot and inventor improve intramedullary nail with nail and installing apparatus and innovate, as the patent No. 98227737.7 " interlocking intramedullary nail of band distal end locating platform ", be that far-end at intramedullary pin is provided with locating platform, the patent No. is 99229724.9 " femoral interlocking intramedullary nail sight ", is the patient inserted far, using during the inter-locking screw of near-end.Two above-mentioned patents, owing to when inserting intramedullary pin, will carry out with special equipment and by external force, intramedullary pin inevitably can produce small distortion, even this small distortion has just caused still difficult location of intramedullary needle far-end and sight can not play the effect of aiming.
Summary of the invention
The purpose of this invention is to provide and a kind ofly also can carry out the holder that pressurizes in the pinpoint femur marrow the intramedullary needle far-end without C type arm x actinoscopy X machine.
In order to realize above-mentioned purpose, pressurization holder in this femur marrow, comprise marrow inner needle, radially be provided with far-end locking screw hole and near-end screw hole on the marrow inner needle, its construction features is that marrow inner needle is divided into the distal bone intramedullary needle and the near-end bone intramedullary needle that can spin to one, the hypomere of near-end bone intramedullary needle is that the section of spinning, stage casing are that thick section, epimere are thin segments, and anti-rotary sleeve is contained in the thin segment position, the lower end can be socketed on thick section, and positioning sleeve is sleeved on the thin segment.
The section of spinning of above-mentioned near-end bone intramedullary needle can be a spiro rod section, revolves in the respective chamber that is inserted in the distal bone intramedullary needle section of spinning, and the section of spinning of near-end bone intramedullary needle also can be a sleeve sections, and rotation set is on the screw thread of the distal bone intramedullary needle section of spinning.
Above-mentioned anti-rotary sleeve is upper coarse and lower fine, and its tapering is 1: 25-1: 30, symmetricly on the lateral surface of anti-rotary sleeve be provided with a pair of outer convex rib.
Above-mentioned positioning sleeve comprises the hexagonal body, is fitted with the steady pin that passes the thin segment pin-and-hole on the opposite side of hexagonal body.
Accurately locate for convenience, shorten operating time, on the side of distal bone intramedullary needle and near-end bone intramedullary needle, be provided with aiming line, the steady pin mounting hole site of far-end locking screw hole, near-end screw hole and positioning sleeve is on aiming line, aiming line both can be a groove triangular in shape, also can be convex tendon triangular in shape.
The using method of pressurization holder is in this femur marrow: 1, select pressurization holder in the femur marrow, after Fracture of femur patient is admitted to hospital, take earlier from hip joint to kneed femur x line sheet, holder pressurizes in the femur marrow that is fit to according to fracture site and pulp cavity size preferred dimension; 2, insert the distal bone intramedullary needle, in the art, from the fracture site otch, after appearing two broken ends of fractured bone of femur, earlier the distal bone intramedullary needle is squeezed into the fracture end pulp cavity far away that expands marrow or do not expand marrow, and made the Duan Wei that spins of distal bone intramedullary needle expose fracture end pulp cavity far away, be as the criterion with aiming line with distal bone intramedullary needle sight and aim at the far-end locking screw hole, after boring femur outer wall and inwall, self-locking nail is inserted the far-end locking screw hole; 3, insert near-end bone intramedullary needle, with pin in the near-end bone marrow by nearly fracture end pulp cavity drive in the wrong direction to twist from bottom to top rotary drill go into, through wearing on the femoral greater trochanter to skin, on near-end bone intramedullary needle, pack into again and prevent the body of rotary sleeve and positioning sleeve, insert steady pin, to prevent that by positioning sleeve rotary sleeve presses down with the tubular driver, pressing down of anti-rotary sleeve, the one, drive near-end bone intramedullary needle and move down and make the Duan Wei that spins to expose nearly fracture end pulp cavity, the 2nd, make the outer convex rib of anti-rotary sleeve thrust the pulp cavity wall; 4, involutory fracture two broken ends of fractured bone that reset, this step is with near-end bone intramedullary needle and the distal bone intramedullary needle is involutory is as the criterion, be as the criterion with aiming line with hexagonal wrench in dark and be enclosed within on the body of location and rotation, by of the pushing tow pressurization of anti-rotary sleeve to near-end bone intramedullary needle, make near-end bone intramedullary needle and distal bone intramedullary needle spin, until screwing, at this moment, two broken ends of fractured bone of fracturing reset and are combined pressurization, afterwards, reuse near-end bone intramedullary needle sight is as the criterion with aiming line and aims at the near-end screw hole, after boring femur outer wall and inwall, self-locking nail is inserted the near-end screw hole.
By above narration as can be known, adopt pressurization holder in the femur marrow of the present invention, because marrow inner needle is divided into the distal bone intramedullary needle and the near-end bone intramedullary needle that can spin to one, when being undergone surgery, the Fracture of femur patient becomes from the femoral greater trochanter otch to from the fracture site otch, insert the distal bone intramedullary needle respectively downwards and upwards insert near-end bone intramedullary needle, the distance of distal bone intramedullary needle and set terminal is shortened dramatically, thereby make the distal bone intramedullary needle not need just can accurately locate with C type arm x actinoscopy X machine.Also owing on near-end bone intramedullary needle, be provided with anti-rotary sleeve and positioning sleeve, near-end bone intramedullary needle and distal bone intramedullary needle are closely spun by pressurizeing be one, can prevent revolving, effectively prevent needle body bending again, create the condition that makes things convenient for for getting pin after the fracture site healing.
Description of drawings
Embodiments of the invention are illustrated in conjunction with the accompanying drawings, wherein:
Fig. 1 is the structural representation of pressurization holder in the described femur marrow of embodiment;
Fig. 2 is the front view of distal bone intramedullary needle;
Fig. 3 is the A-A cutaway view Amplified image of Fig. 2;
Fig. 4 is the front view of near-end bone intramedullary needle;
Fig. 5 is the front view of anti-rotary sleeve;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7 is the front view of positioning sleeve;
Fig. 8 is the vertical view of Fig. 7;
Fig. 9 is the user mode reference diagram of pressurization holder in the femur marrow.
The specific embodiment
With reference to accompanying drawing, pressurization holder in the femur marrow, comprise marrow inner needle, marrow inner needle is divided into the distal bone intramedullary needle 1 and the near-end bone intramedullary needle 3 that can spin to one, on distal bone intramedullary needle 1, radially be provided with far-end locking screw hole 2, on near-end bone intramedullary needle 3, radially be provided with near-end screw hole 4, the hypomere of near-end bone intramedullary needle 3 is the sections of spinning, the stage casing is thick section, epimere is a thin segment, the section of spinning of near-end bone intramedullary needle 3 can be a spiro rod section, revolve in the respective chamber that is inserted in distal bone intramedullary needle 1 section of spinning, the section of spinning of near-end bone intramedullary needle 3 also can be a sleeve sections, rotation set is on the screw thread of distal bone intramedullary needle 1 section of spinning, that Fig. 1 and Fig. 9 draw is the former, anti-rotary sleeve 5 is contained in thin segment thin segment position, the lower end can be socketed on thick section, positioning sleeve is sleeved on the thin segment, anti-rotary sleeve 5 is upper coarse and lower fine, its tapering is 1: 25-1: 30, symmetricly on the lateral surface of anti-rotary sleeve 5 be provided with a pair of outer convex rib 9, positioning sleeve comprises hexagonal body 6, be fitted with the steady pin 7 that passes thin segment pin-and-hole 10 on the opposite side of hexagonal body 6, on the side of distal bone intramedullary needle 1 and near-end bone intramedullary needle 3, be provided with aiming line 8, far-end locking screw hole 2, steady pin 7 mounting hole site of near-end screw hole 4 and positioning sleeve are on aiming line 8, aiming line 8 both can be a groove triangular in shape, can be convex tendon triangular in shape also, what draw among Fig. 3 be groove.
Distal bone intramedullary needle 1 in the present embodiment and near-end bone intramedullary needle 3 can be selected large-scale hollow needle for use when medullary cavity is big, hour can select small-sized solid needle for use when medullary cavity, and what draw among Fig. 3 and Fig. 9 is solid needle.In the art, from fracture site 11 otch.
Claims (9)
1, pressurization holder in a kind of femur marrow, comprise marrow inner needle, radially be provided with far-end locking screw hole (2) and near-end screw hole (4) on the marrow inner needle, it is characterized in that marrow inner needle is divided into the distal bone intramedullary needle (1) and the near-end bone intramedullary needle (3) that can spin to one, the hypomere of near-end bone intramedullary needle (3) is that the section of spinning, stage casing are that thick section, epimere are thin segments, anti-rotary sleeve (5) is contained in the thin segment position, the lower end can be socketed on thick section, and positioning sleeve is sleeved on the thin segment.
2, pressurization holder in the femur marrow according to claim 1 is characterized in that the section of spinning of near-end bone intramedullary needle (3) is a spiro rod section, revolves in the respective chamber that is inserted in distal bone intramedullary needle (1) section of spinning.
3, pressurization holder in the femur marrow according to claim 1 is characterized in that the section of spinning of near-end bone intramedullary needle (3) is a sleeve sections, and rotation set is on the screw thread of distal bone intramedullary needle (1) section of spinning.
4, pressurization holder in the femur marrow according to claim 1 is characterized in that anti-rotary sleeve (5) is upper coarse and lower fine, and its tapering is 1: 25-1: 30.
5,, it is characterized in that the symmetric a pair of outer convex rib (9) that is provided with on the lateral surface of anti-rotary sleeve (5) according to the holder that pressurizes in claim 1 or the 4 described femur marrows.
6, pressurization holder in the femur marrow according to claim 1 is characterized in that positioning sleeve comprises hexagonal body (6), is fitted with the steady pin (7) that passes thin segment pin-and-hole (10) on the opposite side of hexagonal body (6).
7, according to the holder that pressurizes in claim 1,2,3, the 4 or 6 described femur marrows, it is characterized in that being provided with aiming line (8) on the side of distal bone intramedullary needle (1) and near-end bone intramedullary needle (3), steady pin (7) mounting hole site of far-end locking screw hole (2), near-end screw hole (4) and positioning sleeve is on aiming line (8).
8, pressurization holder in the femur marrow according to claim 7 is characterized in that aiming line (8) is a groove triangular in shape.
9, pressurization holder in the femur marrow according to claim 7 is characterized in that aiming line (8) is a convex tendon triangular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112338 CN1219494C (en) | 2003-04-22 | 2003-04-22 | Compression fastener in narrow of thighbone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112338 CN1219494C (en) | 2003-04-22 | 2003-04-22 | Compression fastener in narrow of thighbone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1446518A true CN1446518A (en) | 2003-10-08 |
| CN1219494C CN1219494C (en) | 2005-09-21 |
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ID=28050287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03112338 Expired - Fee Related CN1219494C (en) | 2003-04-22 | 2003-04-22 | Compression fastener in narrow of thighbone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1219494C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103815959A (en) * | 2012-11-16 | 2014-05-28 | 上海底特精密紧固件股份有限公司 | Bone screw |
| CN111973255A (en) * | 2020-06-23 | 2020-11-24 | 杨润松 | Combined intramedullary pin for fixing femoral fracture |
-
2003
- 2003-04-22 CN CN 03112338 patent/CN1219494C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103815959A (en) * | 2012-11-16 | 2014-05-28 | 上海底特精密紧固件股份有限公司 | Bone screw |
| CN111973255A (en) * | 2020-06-23 | 2020-11-24 | 杨润松 | Combined intramedullary pin for fixing femoral fracture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1219494C (en) | 2005-09-21 |
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