CN217447870U - Femur neck osteotomy protector in hip joint replacement - Google Patents
Femur neck osteotomy protector in hip joint replacement Download PDFInfo
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- CN217447870U CN217447870U CN202220238378.5U CN202220238378U CN217447870U CN 217447870 U CN217447870 U CN 217447870U CN 202220238378 U CN202220238378 U CN 202220238378U CN 217447870 U CN217447870 U CN 217447870U
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Abstract
The utility model provides a femoral neck cuts bone protector in hip joint replacement art, includes the handle, the front end shaping of handle has the shielding part that extends to the kickup through a straight line extension section backward to the kickdown portion, the width of shielding part is 25 ~ 28mm, and the shielding part is the arc bending section, and the radius of this arc bending section is 25mm, and the central angle of arc bending section is 140, the front end of arc bending section includes that the width is less than 25 mm's guide portion, forms integrated into one piece's femoral neck cuts bone protector. The utility model provides a thighbone neck among hip joint replacement art cuts bone protector, when solving and carrying out thighbone neck in the hip joint replacement operation and cutting the bone, the pendulum saw damages the structural organization behind glenoid and thighbone neck easily, is difficult to fixed thighbone neck and makes its reduction swing scheduling problem.
Description
Technical Field
The utility model relates to the field of medical surgical instruments, in particular to a femoral neck osteotomy protector in hip joint replacement.
Background
The anatomical basis is as follows: the diameter of femoral head is (46.69 + -3.73) mm; the longitudinal length of the femoral head is (39.22 +/-4.17) mm; the length of the head and neck axis is (95.45 +/-8.16) mm; the length of the upper edge of the head and neck shaft is (84.02 +/-7.11) mm. The length of the lower edge of the head neck shaft is (99.95 +/-9.34) mm; the anterior-posterior diameter of the femoral neck is (26.27 +/-3.15) mm; the longitudinal diameter of the femoral neck is (32.24 +/-3.31) mm; the angle of the shaft is (l26.21 +/-7.13).
In hip replacement surgery, the hip joint is first exposed, followed by resection of the femoral neck and removal of the femoral head to expose the acetabulum. When the femoral neck is cut in the hip joint replacement operation, an assistant uses a hip joint draw hook to insert the hip joint draw hook into a gap between the femoral neck and a glenoid, the femoral neck is slightly jacked up by using the tip of the hip joint draw hook, meanwhile, part of the inner side wall of the femoral neck is shielded, and then the femoral neck is cut by using a swing saw. However, this solution has the following problems during the operation: 1. in the operation process, usually, an operator judges whether the femoral neck is cut off completely according to the falling feeling of the swing saw, but the operator is influenced by inertia, if the swing saw cannot be withdrawn in time, the structural tissue behind the femoral neck is easily damaged, and the subsequent operation cannot be normally performed; 2. the shielding area of the tip of the hip joint draw hook used at present to the inner side wall of the femoral neck is small, so that the protection effect is difficult to play, and the femoral neck is supported by the tip of the hip joint draw hook tip, so that the femoral neck is difficult to fix and reduce the swing. Therefore, the existing hip joint draw hook is difficult to quickly, accurately and safely complete the femoral neck osteotomy.
Disclosure of Invention
The utility model aims at providing a not enough to prior art exists, provide a thighbone neck among hip joint replacement art cuts bone protector, it embraces the thighbone neck through the occlusion part that sets up, can protect glenoid and thighbone neck back of the body flesh tissue, can fix the thighbone neck again and reduce the swing, when carrying out thighbone neck and cutting the bone in solving the hip joint replacement operation, the problem of the structure tissue behind the thighbone neck is damaged easily to the pendulum saw, does benefit to safe effectual completion thighbone neck and cuts the bone.
The purpose of the utility model is realized like this:
the utility model provides a femoral neck among hip joint replacement art cuts bone protector, includes the handle, the front end shaping of handle has the shielding part that extends to the kickup after a linear extension section to the kickdown portion, the width of shielding part is 25 ~ 28mm, and the shielding part is the arc bending section, and the radius of this arc bending section is 25mm, and the central angle of arc bending section is 140, the front end of arc bending section includes that the width is less than the guide portion of shielding part width, forms integrated into one piece's femoral neck cuts bone protector.
The downward bending part is arc-shaped and bent, so that the handle and the linear extension section form an included angle of 130 degrees.
The width of the narrowest part of the downward bending part is 15-20 mm, two side edges of the downward bending part are forward in an arc shape and smoothly transited to a straight extension section, the arc bending angle is 130 degrees, and the two side edges of the downward bending part gradually widen backwards and are connected with the handle.
The length of the straight extension section is 70-75 mm, and the width is 25-28 mm.
The length of the guide part is 25mm, the width of the guide part is gradually narrowed from 25-28 mm to 5-6 mm from the front end, and the end part is passivated.
Two sides of the guiding part are in arc-shaped bending smooth transition, and the arc-shaped bending angle is 130 degrees.
The length of handle is 150 ~ 160mm, the handle widens gradually towards the rear end, the end of handle sets up the through-hole.
The thickness of the femoral neck osteotomy protector is 2-3 mm.
Adopt above-mentioned scheme, a femoral neck cuts bone protector in hip joint replacement art, including the handle, the front end shaping of handle has the shielding part of bending upwards extension behind a straight extension section to the bending down portion, the width of shielding part is 25 ~ 28mm, and the shielding part is the arc bending section, and the radius of this arc bending section is 25mm, and the central angle of arc bending section is 140, the front end of arc bending section includes that the width is less than the guide portion of shielding part width. The width and the arc radius of the shielding part are designed according to the front and back diameters and the longitudinal diameter of the femoral neck, so that the shielding part can extend into the gap between the femoral neck and the glenoid, the arc bending of the shielding part can well support and fix the femoral neck, shielding of the structural tissue on the rear side of the femoral neck is realized, good protection is realized when a swing saw is adopted for osteotomy, an operator can perform the osteotomy in a large gallbladder manner, and the osteotomy time is shortened.
The downward bending part is arc-shaped and bent, so that the handle and the linear extension section form an included angle of 130 degrees. The two side edges of the downward bending part are forward in an arc shape, are smoothly transited to the straight extension section, and gradually widen backwards to be connected with the handle. The handle becomes wider towards the rear end, and the tail end of the handle is provided with a through hole. Through the structure, the narrow section of the arc-shaped curved smooth transition is utilized to reduce the shielding of the femoral neck osteotomy protector on the visual field of the operation part in the operation process.
The length of the straight extension section is 70-75 mm, and the width is 25-28 mm. The femoral neck protection device is designed according to the thickness of tissues around the femoral neck, such as gluteus medius, gluteus minimus, subcutaneous fat and the like on the back and outside, and has the function of enabling the shielding part to extend into the femoral neck and blocking the interference of the surrounding tissues.
The width of the guide part is gradually narrowed from 25-28 mm to 5-6 mm from the front end, and the end part is passivated. Two sides of the guiding part are in arc-shaped bending smooth transition, and the arc-shaped bending angle is 130 degrees. Can lead the femoral neck osteotomy protector to stretch into the gap between the femoral neck and the glenoid.
Compared with the prior art, the femoral neck osteotomy protector in the hip joint replacement operation has the advantages that the central angle is 140 degrees of arc bending section shielding part, the safety of the operation is increased, and the use is quick and convenient. It is easy to manufacture and convenient to implement, popularize and apply.
Drawings
FIG. 1 is a schematic view of a femoral neck osteotomy protector in a hip arthroplasty;
fig. 2 is a schematic view of fig. 1 taken along direction a.
Detailed Description
Referring to fig. 1 to 2, a femoral neck osteotomy protector in hip arthroplasty comprises a handle 1, wherein a downward bending part 2 is formed at the front end of the handle 1, a shielding part 4 which extends in a bending way from a straight extension part 3 to the upper part is formed at the front end of the downward bending part 2, the width of the shielding part 4 is 25-28 mm, the width of the shielding part of the embodiment is preferably 25mm and is smaller than the longitudinal diameter (32.24 +/-3.31) mm of a femoral neck, the shielding part 4 is an arc bending section, the radius of the arc bending section is 25mm, the central angle of the arc bending section is 140 °, the front end of the arc bending section comprises a guide part 5 with the width smaller than the width of the shielding part 4, the length of the guide part 5 is 25mm, the width of the guide part 5 is gradually narrowed from 25-28 mm to 5-6 mm from the front end, and the end part is passivated. The width of the guide part 5 of the present embodiment is gradually narrowed from 25mm to 5mm toward the front end. The two sides of the guiding part 5 are in arc-shaped bending smooth transition, and the arc-shaped bending angle is 130 degrees. The femoral neck osteotomy protector is of an integrally formed structure, and the thickness of the femoral neck osteotomy protector is 2-3 mm. The thickness of the femoral neck osteotomy protector of this embodiment is preferably 2 mm.
The downward bending part 2 is curved in an arc shape, so that the handle 1 and the linear extension section 3 form an included angle of 130 degrees. The narrowest width of the downward bending part 2 is 15-20 mm, the narrowest width of the downward bending part 2 is preferably 15mm, two side edges of the downward bending part 2 are forward in an arc shape and smoothly transited to the straight extension section 3, the arc bending angle is 130 degrees, and two side edges of the downward bending part 2 gradually widen backwards and are connected with the handle 1. The length of handle 1 is 150 ~ 160mm, and the length of handle 1 of this embodiment is preferably 150mm, handle 1 widens gradually towards the rear end, the terminal through-hole that sets up of handle 1. The length of the straight extension section 3 is 70-75 mm, and the width is 25-28 mm; the linear extension 3 of the present embodiment is preferably 70mm in length and 25mm in width.
In hip replacement surgery, the procedure is performed as follows:
1. the greater trochanter of femur and the body surface are palpated downwards and backwards, a posterior lateral incision is made, the length is about 10-16cm, the skin, subcutaneous tissues and superficial fascia are incised layer by layer, the tensor fascia latae and the gluteus maximus are pulled by a draw hook, the external gyrus is cut at the position of the greater trochanter stop, the posterior joint capsule is exposed and cut, and after dislocation of the hip joint, the lesser trochanter is exposed to make a mark of femoral neck osteotomy line.
2. Sliding a guide part of the femoral neck osteotomy protector into the back side of the femoral neck along a gap between the femoral neck and the acetabular cavity, enabling a shielding part to wrap the femoral neck, enabling an osteotomy line to be positioned in the middle of the femoral neck osteotomy protector, and lifting upwards at the moment to enable the femoral neck osteotomy protector to be fully jointed with the femoral neck and play a role in fixing the femoral neck;
3. the bone cutting is finished along the bone cutting line by using a swing saw, and the swing saw should touch the inner side wall of the protector during the bone cutting;
4. and finishing the femoral neck osteotomy and taking out the femoral neck osteotomy protector.
The above is only the preferred embodiment of the present invention, and is not used for limiting the present invention, the technical personnel in the field are not departing from the spirit of the present invention, right the present invention is modified to fall into the protection scope of the present invention.
Claims (8)
1. A femoral neck osteotomy protector in hip arthroplasty, comprising a handle (1), characterized in that: the front end shaping of handle (1) has downwards bending portion (2), and the front end shaping of downwards bending portion (2) has shielding portion (4) of bending upward extension behind a straight line extension section (3), the width of shielding portion (4) is 25 ~ 28mm, and shielding portion (4) are the arc bending section, and the radius of this arc bending section is 25mm, and the central angle of arc bending section is 140, the front end of arc bending section includes that the width is less than guide portion (5) of shielding portion (4) width, forms integrated into one piece's thighbone neck osteotomy protector.
2. The protector for a femoral neck osteotomy in a hip arthroplasty as claimed in claim 1, wherein: the downward bending part (2) is arc-shaped and bent, so that the handle (1) and the linear extension section (3) form an included angle of 130 degrees.
3. The protector for a femoral neck osteotomy in a hip arthroplasty as claimed in claim 1, wherein: the width of the narrowest part of the downward bending part (2) is 15-20 mm, two side edges of the downward bending part (2) are forwards in arc-shaped bending and smoothly transited to the straight extension section (3), the arc-shaped bending angle is 130 degrees, and the two side edges of the downward bending part (2) gradually widen backwards and are connected with the handle (1).
4. The protector for a femoral neck osteotomy in a hip arthroplasty as claimed in claim 1, wherein: the length of the straight extension section (3) is 70-75 mm, and the width is 25-28 mm.
5. The protector for a femoral neck osteotomy in a hip arthroplasty as claimed in claim 1, wherein: the length of the guide part (5) is 25mm, the width of the guide part (5) is gradually narrowed from 25-28 mm to 5-6 mm from the front end, and the end part is passivated.
6. The protector for a femoral neck osteotomy in a hip arthroplasty as claimed in claim 5, wherein: two side edges of the guide part (5) are in arc-shaped bending smooth transition, and the arc-shaped bending angle is 130 degrees.
7. The protector for a femoral neck osteotomy in a hip arthroplasty as claimed in claim 1, wherein: the length of handle (1) is 150 ~ 160mm, handle (1) widen gradually towards the rear end, the end of handle (1) sets up the through-hole.
8. The protector for a femoral neck osteotomy in a hip arthroplasty as claimed in claim 1, wherein: the thickness of the femoral neck osteotomy protector is 2-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220238378.5U CN217447870U (en) | 2022-01-28 | 2022-01-28 | Femur neck osteotomy protector in hip joint replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220238378.5U CN217447870U (en) | 2022-01-28 | 2022-01-28 | Femur neck osteotomy protector in hip joint replacement |
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| CN217447870U true CN217447870U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220238378.5U Active CN217447870U (en) | 2022-01-28 | 2022-01-28 | Femur neck osteotomy protector in hip joint replacement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114366200A (en) * | 2022-01-28 | 2022-04-19 | 中国人民解放军陆军军医大学第二附属医院 | Femoral neck osteotomy baffle in hip arthroplasty |
-
2022
- 2022-01-28 CN CN202220238378.5U patent/CN217447870U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114366200A (en) * | 2022-01-28 | 2022-04-19 | 中国人民解放军陆军军医大学第二附属医院 | Femoral neck osteotomy baffle in hip arthroplasty |
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