CN215899856U - Implanting device for femoral intertrochanteric fracture conformal nail - Google Patents
Implanting device for femoral intertrochanteric fracture conformal nail Download PDFInfo
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- CN215899856U CN215899856U CN202121985455.5U CN202121985455U CN215899856U CN 215899856 U CN215899856 U CN 215899856U CN 202121985455 U CN202121985455 U CN 202121985455U CN 215899856 U CN215899856 U CN 215899856U
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- intramedullary nail
- kirschner wire
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Abstract
The utility model discloses an implant device of suitable nail of fracture between thighbone tuberosity, including location handle and ke shi needle alignment rod, the location handle is connected with the upper end of intramedullary nail through its upper end intramedullary nail connecting rod, and top-down is equipped with the pulling force nail drill bushing in proper order on the location handle, prevents revolving lock nail guiding hole and pressure nail drill bushing, pressure nail drill bushing endotheca is equipped with ke shi needle guide pin bushing, and the head of femur is squeezed into through the pressure nail hole on ke shi needle guide pin bushing and the intramedullary nail to the ke shi needle that the skeleton was implanted in the guide pressure nail, the cooperation of through-hole on the intramedullary nail connecting rod and through screw thread and intramedullary nail connecting rod is passed to ke shi needle alignment rod, and the lower extreme of ke shi needle alignment rod inserts the centre bore of intramedullary nail and pushes up on the ke shi needle of squeezing into the pressure nail hole. This novel utilize kirschner wire calibrated rod to prevent that the kirschner wire from upwards squinting at the in-process of squeezing into the cortex bone, can guarantee that the pressure nail implants the skeleton smoothly according to predetermined direction under the guide of kirschner wire to operation quality and treatment have been improved.
Description
Technical Field
The utility model relates to a device for implanting various internal fixation nails for treating intertrochanteric fracture of femur into bones, belonging to the technical field of medical instruments.
Background
The intertrochanteric fracture of femur, also called intertrochanteric fracture, is a common clinical orthopedic disease, which is frequently seen in the elderly, and if the patient with intertrochanteric fracture fails to be treated and intervened timely and effectively, the disease can cause various structural dysfunctions, even worse, even the lower limb mobility is lost. Conservative treatment requires long-term bed rest, which can lead to more complications and threaten the life of patients in severe cases. Surgical treatment is therefore the best treatment for intertrochanteric femoral fractures.
The mainstream directions for treating the diseases by the operation comprise two types of steel plate internal fixation and shape-fitting nail internal fixation, the femoral head is a main stressed part of a human body, and the dynamic hip is fixed by the steel plate cortex, so that the femoral head is frequently repaired due to over-force when being applied to femoral end fracture, and the shape-fitting nail internal fixation mode is the mainstream solution for the diseases at present.
The conformal nail generally includes intramedullary nails, pressure nails, tension nails and anti-rotation locking nails (as shown in fig. 1), and in order to implant the conformal nail into the bone quickly and accurately, the medical staff needs to operate by the positioning handle 5 shown in fig. 2 and the guiding device installed on the positioning handle 5. Before the pressure nail is implanted, a pressure nail drill sleeve 6 and a kirschner wire guide sleeve 7 are arranged on a positioning handle 5, then a kirschner wire 9 is driven into a human body under the guiding action of the kirschner wire guide sleeve 7, and the kirschner wire pointing to the center of the femoral head is used for guiding and implanting the pressure nail into a bone. However, in clinical use, due to the influence of the flexibility of the kirschner wire, the front end of the kirschner wire is often deflected upwards after entering the cortical bone, so that the direction of the kirschner wire is deviated from the preset direction, thereby causing great difficulty in installing the pressure nail. How to effectively prevent the kirschner wire from deviating is always a difficult problem which troubles medical personnel.
SUMMERY OF THE UTILITY MODEL
This neotype aim at provides an implantation device of suitable shape nail of fracture between thighbone tuberosity to the drawback of prior art to take place the skew when preventing that ke shi needle from beating the human body, guarantee that the pressure nail can implant the skeleton smoothly.
In order to realize the purpose, the novel technical scheme is as follows:
the utility model provides an implant device of suitable nail of fracture between femoral tuberosity, includes location handle and ke shi needle alignment rod, the location handle is connected with the upper end of intramedullary nail through the intramedullary nail connecting rod of its upper end, and top-down is equipped with the pulling force nail drill bushing in proper order on the location handle, prevents revolving lock nail guiding hole and pressure nail drill bushing, the cover is equipped with ke shi needle guide pin bushing in the pressure nail drill bushing, and the ke shi needle that the skeleton was implanted in the guide pressure nail squeezes into the femoral head through the pressure nail hole on ke shi needle guide pin bushing and the intramedullary nail, the cooperation of through-hole and through screw thread and intramedullary nail connecting rod on the intramedullary nail connecting rod is worn to ke shi needle alignment rod's lower extreme inserts the centre bore of intramedullary nail and pushes up on the ke shi needle of squeezing into pressure nail hole.
The intramedullary nail connecting rod is connected with the intramedullary nail through the quick connecting mechanism, the quick connecting mechanism comprises two hooks, a key push rod, a connecting plate and two trigger ejector rods, the key push rod, the connecting plate and the two trigger ejector rods are arranged in an inner hole of the intramedullary nail connecting rod, the hook handles of the two hooks are inserted into the inner hole of the intramedullary nail connecting rod from bottom to top, the hook heads respectively correspond to clamping grooves on the inner walls of two sides of a positioning hole on the upper end surface of the intramedullary nail, the middle part of each hook handle is rotatably connected with the intramedullary nail connecting rod through a rotating shaft, the upper ends of the hook handles are connected with the hole wall of the inner hole of the intramedullary nail connecting rod through springs, so that the hook heads of the hooks are clamped into the corresponding clamping grooves through the elasticity of the springs, one ends of the two trigger ejector rods are fixedly connected with the connecting plate, the other ends of the two trigger ejector rods are respectively in sliding contact with inclined planes at the upper ends of the hook handles of the two hooks, so that the hook heads of the hooks are separated from the clamping grooves through the trigger ejector rods, one end of the key push rod is connected with the connecting plate, and the other end of the key push rod extends out of the inner hole of the intramedullary nail connecting rod and is fixed with a key.
Above-mentioned implantation device of femoral intertrochanteric fracture conformal nail, the upper portion of intramedullary nail connecting rod is equipped with the hammering platform, pass through slot connection between hammering platform and the intramedullary nail connecting rod.
According to the implanting device of the femoral intertrochanteric fracture conformal nail, the upper end of the Kirschner wire calibration rod is provided with the rotating handle.
Above-mentioned implantation device of femoral intertrochanteric fracture shape fit nail, the lower extreme of ke shi needle alignment pole is the button head, and the diameter of ke shi needle alignment pole is twice of ke shi needle diameter at least.
According to the implanting device of the femoral intertrochanteric fracture conformal nail, the lower part of the hook head of the hook is provided with the sliding inclined plane corresponding to the inner edge of the hole opening of the positioning hole on the upper end surface of the intramedullary nail.
According to the implanting device of the femoral intertrochanteric fracture conformal nail, the pressure nail drill sleeve and the tension nail drill sleeve penetrate through the through hole in the positioning handle and are in transition fit with the positioning handle, and the kirschner wire guide sleeve is in transition fit with the pressure nail drill sleeve.
According to the implanting device of the femoral intertrochanteric fracture conformal nail, the intramedullary nail connecting rod and the positioning handle are of an integrated structure.
According to the implanting device of the femoral intertrochanteric fracture conformal nail, the kirschner wire calibration rod penetrates between the two hooks.
This novel utilize kirschner wire calibration rod to carry on spacingly to the kirschner wire, can prevent that the kirschner wire upwards squints at the in-process of squeezing into the cortex bone, makes the directional femoral head center of kirschner wire. The device can ensure that the pressure nail is smoothly implanted into the bone in a preset direction under the guidance of the Kirschner wire, thereby improving the operation quality and the treatment effect.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of a conformable nail;
FIG. 2 is a schematic view of a K-wire driven into a body;
FIG. 3 is a schematic diagram of the novel structure;
fig. 4 is a structural schematic view of the upper end of an intramedullary nail, wherein (a) in fig. 4 is an isometric view, (b) in fig. 4 is a side sectional view, and (c) in fig. 4 is a front sectional view;
FIG. 5 is a cross-sectional view of an intramedullary nail connecting rod;
fig. 6 is a schematic view of the present invention in use (the hammer table is not shown).
The reference numbers in the figures are as follows: 1. the intramedullary nail comprises an intramedullary nail body, 1-1 parts of a positioning hole, 1-2 parts of a positioning notch, 1-3 parts of a clamping groove, 1-4 parts of a tension nail hole, 1-5 parts of a pressure nail hole, 1-6 parts of an anti-rotation locking nail hole, 2 parts of a pressure nail, 3 parts of a tension nail, 4 parts of an anti-rotation locking nail, 5 parts of a positioning handle, 5-1 parts of an intramedullary nail connecting rod, 5-2 parts of a threaded hole, 6 parts of a pressure nail drill bushing, 7 parts of a Kirschner wire guide sleeve, 8 parts of a femoral shaft, 9 parts of a Kirschner wire, 10 parts of a femoral neck, 11 parts of a femoral head, 12 parts of a Kirschner wire calibrating rod, 13 parts of a tension nail drill bushing, 14 parts of an anti-rotation locking nail guide hole, 15 parts of a key, 16 parts of a hammering table, 17 parts of a rotating handle, 18 parts of a key push rod, 19 parts of a connecting plate, 20 parts of a trigger push rod, 21 parts of a spring, 22 parts of a rotating shaft, 23 parts of a hook.
Detailed Description
Referring to fig. 3 to 5, the novel intramedullary nail drill jig mainly comprises a positioning handle 5, an intramedullary nail connecting rod 5-1, a pressure nail drill sleeve 6, a kirschner wire guide sleeve 7, a kirschner wire 9, a kirschner wire calibrating rod 12, a tension nail drill sleeve 13, a hammering table 16, a rotating handle 17 and a quick connecting mechanism, wherein the quick connecting mechanism comprises a key 15, a key push rod 18, a connecting plate 19, a trigger ejector rod 20, a spring 21, a rotating shaft 22 and a hook 23.
The positioning handle 5 is fixedly connected with the upper end of the intramedullary nail 1 through an intramedullary nail connecting rod 5-1 arranged at the upper end of the intramedullary nail connecting rod, in order to prevent the relative rotation between the intramedullary nail 1 and the positioning handle 5, a positioning hole 1-1 is arranged on the upper end surface of the intramedullary nail 1, a positioning notch 1-2 matched with an anti-rotation clamping platform on the positioning handle 5 is arranged on the hole wall of the positioning hole 1-1, a threaded hole 5-2 opposite to a central hole at the upper end of the intramedullary nail 1 is arranged on the intramedullary nail connecting rod 5-1, and an external thread matched with an internal thread in the threaded hole 5-2 is arranged on the Kirschner wire calibrating rod 12. After the kirschner wire calibrating rod 12 is screwed into the threaded hole 5-2, the lower end of the kirschner wire calibrating rod can enter the pressure nail hole 1-5 on the intramedullary nail 1 through the central hole of the intramedullary nail 1. The positioning handle 5 is sequentially provided with a tension nail drill sleeve 13, an anti-rotation locking nail guide hole 14 and a pressure nail drill sleeve 6 from top to bottom, which are respectively opposite to the tension nail holes 1-4, the anti-rotation locking nail holes 1-6 and the pressure nail holes 1-5 on the intramedullary nail 1.
When the femur of a patient is internally fixed, firstly, the intramedullary nail 1 is connected with the intramedullary nail connecting rod 5-1 on the positioning handle 5, the hammering table 16 is arranged on the intramedullary nail connecting rod 5-1, and then the intramedullary nail 1 is hammered into the medullary cavity of the femur by hammering the hammering table 16.
After the intramedullary nail 1 is implanted, the Kirschner wire guide sleeve 7 is inserted into the pressure nail drill sleeve 6, then the Kirschner wire 9 is driven into the human body under the guiding action of the Kirschner wire guide sleeve 7, then the Kirschner wire guide sleeve 7 is taken out, and the Kirschner wire 9 pointing to the center of the femoral head and the pressure nail drill sleeve 6 are used for guiding to implant the pressure nail into the bone. In order to prevent the kirschner wire 9 from deviating upwards in the process of driving into the cortical bone, the kirschner wire calibration rod 12 can be screwed into the threaded hole 5-2 on the intramedullary nail connecting rod 5-1, the lower end of the kirschner wire calibration rod 12 is inserted into the central hole of the intramedullary nail 1 and is propped against the upper part of the kirschner wire 9, the kirschner wire 9 is prevented from deviating upwards by the kirschner wire calibration rod 12, the front end of the kirschner wire 9 is ensured to point to the center of the femoral head, and the kirschner wire calibration rod 12 is immediately removed after the kirschner wire 9 is driven into the human body. When the tension nail 3 and the anti-rotation locking nail 4 are implanted, the femur can be drilled under the guiding action of the tension nail drill sleeve 13 and the anti-rotation locking nail guide hole 14, so that the accuracy of the drilling direction is ensured.
In order to improve the operation efficiency, the intramedullary nail connecting rod 5-1 is connected with the intramedullary nail 1 through a quick connecting mechanism, the quick connecting mechanism mainly comprises two hooks 23, a key push rod 18, a connecting plate 19 and two trigger ejector rods 20 which are arranged in an inner hole of the intramedullary nail connecting rod 5-1, the hook handles of the two hooks 23 are inserted into the inner hole of the intramedullary nail connecting rod 5-1 from bottom to top, the hook heads respectively correspond to clamping grooves 1-3 on the inner walls of two sides of a positioning hole 1-1 on the upper end surface of the intramedullary nail 1, the middle part of each hook handle is rotatably connected with the intramedullary nail connecting rod 5-1 through a rotating shaft 22, the upper ends of the hook handles are connected with the hole wall of the inner hole of the intramedullary nail connecting rod 5-1 through a spring 21, and in a natural state, the hook heads of the hooks 23 can rotate outwards around the rotating shaft 22 and are clamped into the corresponding clamping grooves 1-3 through the elasticity of the spring 21, one end of each of the two trigger ejector rods 20 is fixedly connected with the connecting plate 19, and the other end of each of the two trigger ejector rods is in sliding contact with the inclined surface at the upper end of the hook handle of each of the two hooks 23, so that when the trigger ejector rods 20 extrude the inclined surfaces at the upper ends of the hook handles under the action of external force, the hook heads of the hooks 23 rotate inwards and are separated from the clamping grooves 1-3, and meanwhile, the springs 21 are compressed. The key push rod 18 is parallel to the trigger push rod 20, one end of the key push rod is connected with the connecting plate 19, the other end of the key push rod extends out of the inner hole of the intramedullary nail connecting rod 5-1 and is fixed with a key 15, and the trigger push rod 20 can extrude the inclined plane at the upper end of the hook handle of the hook 23 by pressing the key 15, so that the hook head is separated from the clamping groove 1-3.
When the intramedullary nail 1 is connected with the intramedullary nail connecting rod 5-1, the key 15 is pressed, the intramedullary nail 1 is butted with the intramedullary nail connecting rod 5-1, and then the key 15 is released, so that the rapid connection of the intramedullary nail 1 and the intramedullary nail connecting rod 5-1 can be realized; when the intramedullary nail 1 needs to be separated from the intramedullary nail connecting rod 5-1, the button 15 is pressed down, and the intramedullary nail 1 automatically falls off from the intramedullary nail connecting rod 5-1.
The hammering table 16 is connected with the intramedullary nail connecting rod 5-1 through a slot, and the assembly and disassembly are very convenient. The upper end of the kirschner wire calibration rod 12 is provided with a rotating handle 17, which is convenient for the operation of the kirschner wire calibration rod 12. In order to enhance the blocking effect of the kirschner wire calibration rod 12 on the kirschner wire 9, the lower end of the kirschner wire calibration rod 12 is designed to be round, and the diameter of the kirschner wire calibration rod 12 is at least twice of the diameter of the kirschner wire 9.
The lower part of the hook head of the hook 23 is provided with a sliding inclined plane corresponding to the inner edge of the hole opening of the positioning hole 1-1 on the upper end surface of the intramedullary nail 1, so that the connection between the intramedullary nail 1 and the intramedullary nail connecting rod 5-1 is facilitated.
The pressure nail drill bushing 6 and the tension nail drill bushing 13 both penetrate through a through hole in the positioning handle 5 and are in transition fit with the positioning handle 5, and the Kirschner wire guide sleeve 7 is in transition fit with the pressure nail drill bushing 6, so that the disassembly and the assembly are convenient, and the assembly precision can be ensured.
This is novel not only can prevent that ke shi needle from upwards squinting when squeezing into the cortex bone, has improved operation quality and treatment, through setting up buckle formula quick coupling mechanism, still can save the operation time when guaranteeing the firm in connection, improves operation efficiency.
Claims (9)
1. An implanting device of a femoral intertrochanteric fracture conformable nail is characterized by comprising a positioning handle (5) and a kirschner wire calibrating rod (12), wherein the positioning handle (5) is connected with the upper end of an intramedullary nail (1) through an intramedullary nail connecting rod (5-1) at the upper end of the positioning handle, a tension nail drill sleeve (13), a rotation-preventing locking nail guide hole (14) and a pressure nail drill sleeve (6) are sequentially arranged on the positioning handle (5) from top to bottom, a kirschner wire guide sleeve (7) is sleeved in the pressure nail drill sleeve (6), a kirschner wire (9) for guiding a pressure nail (2) to be implanted into a bone is driven into a femoral head through the kirschner wire guide sleeve (7) and a pressure nail hole (1-5) in the intramedullary nail (1), the kirschner wire calibrating rod (12) penetrates through a through hole in the intramedullary nail connecting rod (5-1) and is matched with the intramedullary nail connecting rod (5-1) through threads, the lower end of the kirschner wire calibration rod (12) is inserted into the central hole of the intramedullary nail (1) and is pressed against the kirschner wire (9) which is driven into the pressure nail hole (1-5).
2. The implanting device of the femoral intertrochanteric fracture conformal nail according to claim 1, characterized in that the intramedullary nail connecting rod (5-1) is connected with the intramedullary nail (1) through a quick connecting mechanism, the quick connecting mechanism comprises two hooks (23), a key push rod (18), a connecting plate (19) and two trigger push rods (20) which are arranged in the inner hole of the intramedullary nail connecting rod (5-1), the hook handles of the two hooks (23) are inserted into the inner hole of the intramedullary nail connecting rod (5-1) from bottom to top, the hook heads respectively correspond to the clamping grooves (1-3) on the inner walls at both sides of the positioning hole (1-1) on the upper end surface of the intramedullary nail (1), the middle part of each hook handle is rotatably connected with the intramedullary nail connecting rod (5-1) through a rotating shaft (22), the upper end of the hook handle is connected with the hole wall of the inner hole of the intramedullary nail connecting rod (5-1) through a spring (21), thereby the gib head of couple (23) card is gone into corresponding draw-in groove (1-3) through the elasticity of spring (21), and the one end and connecting plate (19) fixed connection of two trigger ejector pins (20), the other end respectively with the inclined plane sliding contact of the hook handle upper end of two couples (23), thereby make the gib head of couple (23) break away from draw-in groove (1-3) through trigger ejector pin (20), the one end and the connecting plate (19) of button push rod (18) are connected, and the other end stretches out and is fixed with button (15) from the hole of intramedullary nail connecting rod (5-1).
3. The implanting device of the femoral intertrochanteric fracture conformal nail according to the claim 2, characterized in that, the intramedullary nail connecting rod (5-1) is provided with a hammering table (16) at the upper part, and the hammering table (16) is connected with the intramedullary nail connecting rod (5-1) through a slot.
4. The implanting device of the femoral intertrochanteric fracture shaped nail according to claim 3, characterized in that the upper end of the kirschner wire calibration rod (12) is provided with a rotating handle (17).
5. The implanting device of the femoral intertrochanteric fracture shaped nail according to claim 4, characterized in that the lower end of the kirschner wire calibration rod (12) is round-headed, the diameter of the kirschner wire calibration rod (12) being at least twice the diameter of the kirschner wire (9).
6. The implanting device of the femoral intertrochanteric fracture conformal nail according to the claim 5, characterized in that, the lower part of the hook head of the hook (23) is provided with a sliding inclined surface corresponding to the inner edge of the positioning hole (1-1) on the upper end surface of the intramedullary nail (1).
7. The implanting device of the femoral intertrochanteric fracture conformal nail according to the claim 6, characterized in that the pressure nail drill sleeve (6) and the tension nail drill sleeve (13) both pass through the through hole on the positioning handle (5) and are in transition fit with the positioning handle (5), and the Kirschner wire guide sleeve (7) is in transition fit with the pressure nail drill sleeve (6).
8. The implanting device of the femoral intertrochanteric fracture nail according to claim 7, characterized in that the intramedullary nail connecting rod (5-1) and the positioning handle (5) are of an integrated structure.
9. The implanting device of femoral intertrochanteric fracture dowel according to claim 8, characterized by that the kirschner wire calibration rod (12) passes between two hooks (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121985455.5U CN215899856U (en) | 2021-08-23 | 2021-08-23 | Implanting device for femoral intertrochanteric fracture conformal nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121985455.5U CN215899856U (en) | 2021-08-23 | 2021-08-23 | Implanting device for femoral intertrochanteric fracture conformal nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215899856U true CN215899856U (en) | 2022-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121985455.5U Active CN215899856U (en) | 2021-08-23 | 2021-08-23 | Implanting device for femoral intertrochanteric fracture conformal nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215899856U (en) |
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2021
- 2021-08-23 CN CN202121985455.5U patent/CN215899856U/en active Active
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