CN217366048U - Device for percutaneous fixation of femoral neck fracture - Google Patents
Device for percutaneous fixation of femoral neck fracture Download PDFInfo
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- CN217366048U CN217366048U CN202123046305.0U CN202123046305U CN217366048U CN 217366048 U CN217366048 U CN 217366048U CN 202123046305 U CN202123046305 U CN 202123046305U CN 217366048 U CN217366048 U CN 217366048U
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- sleeve
- inner rod
- femoral neck
- neck fracture
- percutaneous fixation
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Abstract
The utility model discloses a device for percutaneous fixation of femoral neck fracture, which comprises an inner rod and a sleeve; the first end of the inner rod is provided with a limiting part, and the outer diameter of the limiting part is larger than the inner diameter of the sleeve; the second end of the inner rod is provided with an inserting part; a through channel is arranged inside the inner rod; the inner rod and the sleeve can be sleeved together inside and outside, and the inserting part of the inner rod is provided with a second end at least partially protruding out of the sleeve. The utility model discloses a device for femoral neck fracture percutaneous fixation can be used to strut the tissue passageway of cutting, and the operation of being convenient for reduces the damage to realize more wicresoft's treatment femoral neck fracture.
Description
Technical Field
The utility model belongs to the technical field of surgical instruments, concretely relates to orthopedic surgery apparatus.
Background
The treatment of femoral neck fracture includes incision reduction internal fixation, closed reduction percutaneous fixation and other modes. The closed reduction percutaneous fixation has the characteristics of small tissue damage, quick recovery of patients and the like. The current operating method is as follows:
1. the fracture reduction is satisfactory under the perspective of a C-arm X-ray machine;
2.3 Ke's guide pins are drilled into the cylinder and fixed, the positions of the Ke's guide pins are in a shape like a Chinese character 'pin' as much as possible, and the positions of the Ke's guide pins are adjusted to satisfy the depth and direction of the Ke's guide pins in a perspective mode again;
3. at the needle inserting point of the Ke's guide needle, the Ke's guide needle is used as the center, a hollow cutting handle (CN 204951141U) is used for cutting the skin for about 1cm, and a tissue channel is cut to the surface of the femur along the direction from the Ke's guide needle to the femur;
4. measuring the depth of the Ke's guide pin from the lateral cortex of the femur to the femoral head to determine the selected length of the hollow lag screw; simultaneously, measuring the depth of the lateral cortex of the femur to the skin;
5. drilling a hole through the lateral cortex of the femur by using a hollow drill;
6. screwing a hollow lag screw with similar length into the Ke's guide pin by using a hollow hexagonal screwdriver (CN 205913390U) with scales along the Ke's guide pin, wherein the depth of the hollow hexagonal screwdriver with the scales which is screwed into the skin is the measured depth from the outer cortex of the femur to the skin, and the C-arm X-ray machine is used for perspective confirmation at one time;
7. finally, the incision is washed and sutured, and the operation is ended.
However, in the actual use process at present, it is found that after the kirschner wire guide is drilled, the hollow cutting handle is used for cutting the bone surface, and the hollow cutting handle is pulled out, tissues such as skin, muscle and the like can recover and surround the kirschner wire guide, so that the cut tissue channel is reduced, at the moment, the operations of drilling the bone by using the hollow drill, screwing the hollow tension screw and the like are not easy to carry out, and the tissues such as muscle, deep fascia, fat, skin and the like are easy to be damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a device for percutaneous fixation of femoral neck fracture.
The utility model provides a technical scheme that its technical problem adopted is:
a device for percutaneous fixation of femoral neck fractures comprises an inner rod and a sleeve; the first end of the inner rod is provided with a limiting part, and the outer diameter of the limiting part is larger than the inner diameter of the sleeve; the second end of the inner rod is provided with an inserting part; a through channel is arranged inside the inner rod; the inner rod and the sleeve can be sleeved together inside and outside, and the inserting part of the inner rod is provided with a second end at least partially protruding out of the sleeve.
In one embodiment: the sleeve is cylindrical.
In one embodiment: the sleeve is further provided with a handle.
In one embodiment: the handle is arranged at the first end of the sleeve.
In one embodiment: and a fixing structure is arranged at the second end of the sleeve.
In one embodiment: the fixing structure is in a zigzag shape.
In one embodiment: the middle section of the inner rod is a straight rod.
In one embodiment: the outer diameter of the middle section of the inner rod is smaller than the inner diameter of the sleeve.
In one embodiment: the insertion part is of a cone frustum-shaped structure, and the maximum outer diameter of the insertion part is smaller than the inner diameter of the sleeve.
Compared with the background technology, the technical scheme has the following advantages:
the utility model discloses a device for femoral neck fracture percutaneous fixation, bore into the femoral neck at ke shi guide pin, utilize the hollow cutting handle to cut open tissue passageway after, utilize interior pole and the sleeve of the device to insert on the femoral bone surface along ke shi guide pin, in order to strut the tissue passageway of cutting, skin, subcutaneous tissue, dark manadesma and muscle are extruded outside the sleeve, pole in withdrawing from again, it fixes at the femoral bone surface to remain the sleeve, just can conveniently measure in the sleeve, drill, twist operations such as screw, and be difficult for damaging muscle and dark manadesma, fat, tissues such as skin, thereby realize more wicresoft's treatment femoral neck fracture.
Drawings
Fig. 1 is an exploded view of an inner rod and a sleeve of a device for percutaneous fixation of a femoral neck fracture according to an embodiment of the present invention.
Fig. 2 is a schematic view showing the mutual attachment of the inner rod and the sleeve of the device for percutaneous fixation of a femoral neck fracture according to the embodiment of the present invention.
Reference numerals are as follows: the device comprises an inner rod 10, a cylindrical straight rod 11, a limiting part 12, an inserting part 13 and a channel 14; sleeve 20, handle 21, fixed knot constructs 22.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the perspective views of the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and 2, the device for percutaneous fixation of femoral neck fracture of the present embodiment includes an inner rod 10 and a sleeve 20 which are sleeved inside and outside; wherein:
the middle section of the inner rod 10 is a cylindrical straight rod 11, and the outer diameter of the part is slightly smaller than the inner diameter of the sleeve 20; the upper end of the cylindrical straight rod 11 of the inner rod 10 is provided with a cylindrical limiting part 12, the outer diameter of the limiting part 12 is larger than the inner diameter of the sleeve 20, and the inner rod 10 and the sleeve 20 can be connected together through the limiting part 12; the inner rod 10 is provided with a truncated cone-shaped insertion part 13 at the lower end of the cylindrical straight rod 11 part, and the maximum outer diameter of the insertion part 13 is smaller than the inner diameter of the sleeve 20; the inner rod 10 is provided with a through channel 14 inside, and the channel 14 can be penetrated by a Capture guide needle. In the present embodiment, the length of the inner rod 10 is, for example, 7 to 7.5cm (excluding the limiting portion 12), wherein the length of the insertion portion 13 is about 1cm, and the remaining cylindrical straight rod 11 is about 6 cm; the external diameter of the cylindrical straight rod 11 portion is for example 8.3 mm; the outer diameter of the kirschner wire is about 2.3mm, and the inner diameter of the channel 14 inside the inner rod 10 is preferably not less than 2.4mm, for example, 3 mm;
the sleeve 20 is cylindrical, the upper end of the sleeve 20 is provided with a handle 21, the lower end of the sleeve 20 is provided with a sawtooth-shaped fixing structure 22, and the sawtooth-shaped fixing structure 22 is helpful for fixing the sleeve 20 on the bone surface; the inner diameter of the sleeve 20 is required to accommodate an inner rod 10, a hollow drill bit, a hollow lag screw or a hollow hexagonal screwdriver with scales; in this embodiment, the inner diameter of the sleeve 20 is slightly larger than the outer diameter of the cylindrical straight rod 11 at the middle section of the inner rod 10, for example, the inner diameter of the sleeve 20 is 8.5 mm; but the inner diameter of the sleeve 20 cannot be much larger than the outer diameter of the middle section of the inner rod 10, preferably 0.2-0.5 mm, so as to prevent tissues such as muscle from entering between the sleeve 20 and the inner rod 10 in the using process; the length of the sleeve 20 is 6cm, for example, and is matched with the length of the cylindrical straight rod 11 at the middle section of the inner rod 10; thus, when the sleeve 20 is attached to the inner rod 10, the insertion portion 13 of the inner rod 10 at least partially protrudes beyond the lower end of the sleeve 20 to facilitate insertion into a tissue incision.
The device for percutaneous fixation of femoral neck fractures of the present embodiment is used in the field as follows:
1. the fracture reduction is satisfactory under the fluoroscopy of a C-arm X-ray machine;
2.3 Ke's guide pins are drilled and fixed, the positions of the Ke's guide pins are in a shape like a Chinese character 'pin' as much as possible, and the positions of the Ke's guide pins are adjusted in a perspective mode again until the depth and the direction of the Ke's guide pins are satisfied;
3. at the needle inserting point of the Ke's guide needle, the Ke's guide needle is used as the center, the skin is incised by about 1cm by using a hollow cutting handle, and a tissue channel is incised to the surface of the femur along the direction from the Ke's guide needle to the femur;
4. the inner rod 10 of the device for percutaneous fixation of femoral neck fracture of the embodiment is assembled with the sleeve 20, and is inserted into the femoral bone surface through the incised tissue channel along the kirschner guide pin (the kirschner guide pin passes through the channel 14 of the inner rod 10), so that the skin, the subcutaneous tissue, the deep fascia and the muscle are extruded out of the sleeve 20; withdrawing the inner rod 10, and keeping the sleeve 20 against the femur; at this time, tissues such as skin, muscle and the like do not exist in the sleeve 20, so that the subsequent operations such as measurement, drilling, screwing in screws and the like in the sleeve 20 are facilitated;
5. measuring the depth of the Ke's guide pin from the lateral cortex of the femur to the femoral head to determine the selected length of the cannulated lag screw; measuring the depth of the lateral cortex of the femur to the skin;
6. drilling with a cannulated drill to penetrate the lateral cortex of the femur;
7. screwing a hollow lag screw with similar length into the hollow hexagonal screwdriver with scales along the Ke's guide pin, wherein the depth of the hollow hexagonal screwdriver with scales submerged into the skin is the measured depth from the lateral cortex of the femur to the skin, and the C-arm X-ray machine is used for performing perspective once confirmation;
8. finally, the sleeve 20 is removed, the incision is flushed, sutured and the procedure is completed.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (9)
1. A device for percutaneous fixation of femoral neck fractures, characterized in that: comprises an inner rod and a sleeve; the first end of the inner rod is provided with a limiting part, and the outer diameter of the limiting part is larger than the inner diameter of the sleeve; the second end of the inner rod is provided with an inserting part; a through channel is arranged inside the inner rod; the inner rod and the sleeve can be sleeved together inside and outside, and the inserting part of the inner rod is provided with a second end at least partially protruding out of the sleeve.
2. A device for percutaneous fixation of a femoral neck fracture according to claim 1, wherein: the sleeve is cylindrical.
3. A device for percutaneous fixation of a femoral neck fracture according to claim 1, wherein: the sleeve is also provided with a handle.
4. A device for percutaneous fixation of a femoral neck fracture according to claim 3, wherein: the handle is arranged at the first end of the sleeve.
5. A device for percutaneous fixation of a femoral neck fracture according to claim 1, wherein: and a fixing structure is arranged at the second end of the sleeve.
6. A device for the percutaneous fixation of a femoral neck fracture according to claim 5, wherein: the fixing structure is in a zigzag shape.
7. A device for percutaneous fixation of a femoral neck fracture according to claim 1, wherein: the middle section of the inner rod is a straight rod.
8. A device for percutaneous fixation of a femoral neck fracture according to claim 7, wherein: the outer diameter of the middle section of the inner rod is smaller than the inner diameter of the sleeve.
9. A device for percutaneous fixation of a femoral neck fracture according to claim 1, wherein: the insertion part is of a cone frustum-shaped structure, and the maximum outer diameter of the insertion part is smaller than the inner diameter of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123046305.0U CN217366048U (en) | 2021-12-06 | 2021-12-06 | Device for percutaneous fixation of femoral neck fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123046305.0U CN217366048U (en) | 2021-12-06 | 2021-12-06 | Device for percutaneous fixation of femoral neck fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217366048U true CN217366048U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123046305.0U Active CN217366048U (en) | 2021-12-06 | 2021-12-06 | Device for percutaneous fixation of femoral neck fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217366048U (en) |
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2021
- 2021-12-06 CN CN202123046305.0U patent/CN217366048U/en active Active
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