CN215458535U - Proximal humerus intramedullary nail sighting device - Google Patents
Proximal humerus intramedullary nail sighting device Download PDFInfo
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- CN215458535U CN215458535U CN202121009076.2U CN202121009076U CN215458535U CN 215458535 U CN215458535 U CN 215458535U CN 202121009076 U CN202121009076 U CN 202121009076U CN 215458535 U CN215458535 U CN 215458535U
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Abstract
The utility model relates to a proximal humerus intramedullary nail sighting device which is connected with a main humerus intramedullary nail in a detachable mode and comprises a support part and a sighting extension frame; the support part is U-shaped and comprises an L-shaped support formed by connecting a vertical rod and a transverse rod and a connecting rod connected to the bottom of the vertical rod, the transverse rod is provided with an extension frame fixing hole penetrating along the far and near directions and a near-end aiming hole penetrating vertically, and the near-end aiming hole corresponds to a transverse locking nail hole of a main nail of the intramedullary nail; the proximal side of the aiming extension frame is provided with a locking rod corresponding to the extension frame fixing hole, and the surface of the aiming extension frame is provided with a distal aiming hole corresponding to a common nail hole and a functional hole of the main nail of the humerus intramedullary nail. Compared with the prior art, the utility model has the beneficial effects that: the aiming frame is provided with a plurality of aiming holes, and the aiming holes are matched with the guide cone assembly (the protective sleeve, the drill bushing and the guide cone), so that the positioning installation including the fixed plate, the locking nail and the transverse locking nail can be realized, and the operation efficiency is improved.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a proximal humerus intramedullary nail sighting device.
Background
Proximal humeral fractures account for approximately 5% of all fractures in adults, the 2 nd most common upper limb fracture in the elderly. The occurrence of proximal humeral fracture is obviously related to osteoporosis, and with the development of social economy, the life of people is prolonged, the incidence of proximal humeral fracture tends to rise, and the fracture is a difficult point for orthopedic treatment of trauma. The proximal humerus fracture can be diagnosed without difficulty by imaging examination such as X-ray examination. Currently, Neer typing is commonly used clinically to type proximal humeral fractures. Patients with small displacement and obvious contraindications can adopt conservative treatment, and the vast majority of fractures with large displacement and unstable two parts or more than two parts are usually treated by surgery. There are many options for surgical treatment of proximal humerus fractures, and common surgical treatment methods include kirschner wire fixation, steel plate fixation, intramedullary nail fixation, artificial humeral head replacement, and reverse shoulder replacement. Currently, the most common options for surgical treatment of proximal humeral fractures are locking plates and intramedullary nails
The locking steel plate has good effect on treating the proximal humerus fracture, but has the following advantages: 1. the eccentric fixation and the large fixed force arm resist the stress difference of the inversion. 2. The range of exfoliation is large, which affects blood supply. 3. Screws are difficult to fix to large and small tuberosity fractures. 4. After operation, the defects of more complications such as varus deformity, screw cutting, humeral head necrosis and the like occur. Intramedullary nails have become a more attractive option due to their significant advantages of rigidity, axial fixation, minimally invasive manipulation, etc.
Because the proximal humeral intramedullary nail is obviously superior to steel plate screw internal fixation in terms of mechanical advantages, doctors pay more attention to clinical treatment in recent years, but the proximal humeral intramedullary nail has several difficulties: 1. the operating technique learning curve is too long and the operating technique requirement is large. The locking steel plate is usually accessed through the gap of the pectoralis major deltoid muscle of the deltoid muscle, the reduction is performed under the condition of direct vision through incision, the operation is easy, the intramedullary nail is restored in a closed manner, the locking steel plate is accessed through a small incision on the front and the outer sides of the acromion, the locking steel plate is fixed through internal fixation after the reduction, and the operation is difficult and has certain requirements on the operation technology. 2. The reduction is difficult, and the closed reduction of the intramedullary nail often can not lead the fracture to achieve anatomical reduction. 3. The existing fixing mode can damage the rotator cuff and damage the joint surface. During the surgical operation, since the supraspinatus tendon may be damaged during the insertion of the antegrade intramedullary nail from the humerus top, which may affect the rotator cuff function, it has been reported that the supraspinatus strength of the patient is impaired after the intramedullary nail is fixed.
Disclosure of Invention
The utility model aims to: provides a proximal humerus intramedullary nail aiming device which aims to be matched with a proximal humerus intramedullary nail and assist in installing other related accessories.
The utility model is realized by the following technical scheme: the proximal humerus intramedullary nail aiming device is detachably connected with the main humerus intramedullary nail 1 and comprises a bracket part 21 and an aiming extension bracket 22;
the support part 21 is U-shaped and comprises an L-shaped support 211 formed by connecting a vertical rod 213 and a transverse rod 212 and a connecting rod 214 connected to the bottom of the vertical rod 213, the transverse rod 212 is provided with an extension frame fixing hole 215 penetrating along the far and near directions and a near-end aiming hole 216 penetrating vertically, and the near-end aiming hole 216 corresponds to the transverse locking nail hole 13 of the intramedullary nail main nail 1;
the proximal side of the aiming extension frame 22 is provided with a locking rod 221 corresponding to the extension frame fixing hole 215, and the surface of the aiming extension frame 22 is provided with a distal aiming hole 222 corresponding to the common nail hole 15 and the functional hole 16 of the main humeral intramedullary nail 1.
Compared with the prior art, the utility model has the beneficial effects that:
aiming holes are designed on the aiming device of the proximal intramedullary nail of the humerus, and a guide cone assembly is matched through the aiming holes
Protective sleeve, drill bushing and guide cone), can realize including the location installation of fixed plate, locking nail, horizontal locking nail, improve operation efficiency.
Drawings
Fig. 1 is a combined state reference view of a main nail and an aiming block of a humeral intramedullary nail of the present invention;
fig. 2 is a schematic structural view of a main nail of the humeral intramedullary nail;
FIG. 3 is a schematic view of the structure rotated by 90 degrees on the basis of FIG. 2;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a side view of an L-shaped bracket;
FIG. 6 is a top view of the L-shaped bracket;
FIG. 7 is a partial cross-sectional view taken at C-C of FIG. 6;
FIG. 8 is a top view of the aiming extension carriage;
FIG. 9 is a cross-sectional view taken at B-B of FIG. 8;
fig. 10 is a schematic structural view of the humerus intramedullary nail main nail after being combined with the fixing plate and the locking nail set.
Description of reference numerals: the nail comprises a main nail of a 1-humerus intramedullary nail, a main nail of 11-proximal part, a main nail of 12-distal part, a transverse locking nail hole of 13-aiming arm, a fixing hole of 14-aiming arm, a common nail hole of 15-common nail hole, a functional hole of 16-aiming arm, a 2-aiming arm, a bracket part of 21-211-L type bracket, a transverse rod of 212-transverse rod, a vertical rod of 213-vertical rod, a connecting rod of 214-distributing plate, a fixing hole of 215-distributing plate, a near aiming hole of 216-near aiming arm, an aiming extension frame of 22-aiming extension frame, a locking rod of 221-distal part, an aiming hole of 222-extension part, an extension wing of 224-extension wing, a fixing plate of 3-41-locking nail, a transverse locking nail of 42-transverse locking nail and a universal nail of 43.
Detailed Description
The utility model is described in detail below with reference to the following description of the drawings:
as shown in fig. 1-10: a proximal humerus intramedullary nail aiming device is detachably connected with a main humerus intramedullary nail 1 and comprises a bracket part 21 and an aiming extension bracket 22;
the support part 21 is U-shaped and comprises an L-shaped support 211 formed by connecting a vertical rod 213 and a transverse rod 212 and a connecting rod 214 connected to the bottom of the vertical rod 213, the transverse rod 212 is provided with an extension frame fixing hole 215 penetrating along the far and near directions and a near-end aiming hole 216 penetrating vertically, and the near-end aiming hole 216 corresponds to the transverse locking nail hole 13 of the intramedullary nail main nail 1;
the proximal side of the aiming extension frame 22 is provided with a locking rod 221 corresponding to the extension frame fixing hole 215, and the surface of the aiming extension frame 22 is provided with a distal aiming hole 222 corresponding to the common nail hole 15 and the functional hole 16 of the main humeral intramedullary nail 1.
As shown in fig. 2-4: the humeral intramedullary nail main nail 1 is divided into a proximal portion 11 and a distal portion 12; the proximal portion 11 is provided with a plurality of transverse locking nail holes 13 and an aiming arm fixing hole 14, the distal portion 12 is provided with a plurality of common nail holes 15, and the area on the humeral intramedullary nail main nail 1 between the transverse locking nail holes 13 and the common nail holes 15 is provided with a functional hole 16.
Further, the proximal aiming holes 216 are distributed two at the middle portion of the transverse rod 212, two at the end portions of the transverse rod 212, and two proximal aiming holes 216 at the middle portion of the transverse rod 212 and two proximal aiming holes 216 at the end portions of the transverse rod 212 are distributed in the proximal and distal directions. The proximal aiming hole corresponds to the cross locking nail hole and is used for guiding the installation of the locking nail.
Further, the far end side of the aiming extension frame 22 is provided with an extension part 223, and the extension part 223 is provided with a far end aiming hole 222; the two sides of the aiming extension frame 22 are provided with mirror-symmetrical extension wings 224, and three distal aiming holes 222 are distributed on the extension wings 224. The extension 223 has a distal aiming hole 222 for mainly aligning with the functional hole 16, and three distal aiming holes 222 distributed on the extension wing 224 for mainly aligning with the common nail hole 15.
In the present case, aiming frame 2 adopts carbon fiber material, and the connecting rod adopts stainless steel.
The using method of the utility model is as follows:
step 1: the position of the patient is determined, and the patient is positioned on the chair position of the radiolucent operating table in a proper posture.
Step 2: the surgical approach is a lateral approach of the shoulder joint or an intersomatic approach of the deltoid muscle of the pectoralis major, depending on the situation.
And step 3: and assembling the aiming frame, and installing the aiming frame according to the left and right conditions of the main nail of the humerus intramedullary nail.
And 4, step 4: inserting the main nail of the humerus intramedullary nail, detaching the main nail of the humerus intramedullary nail into a humerus medullary cavity, and installing the aiming frame on the main nail of the humerus intramedullary nail.
And 5: the fracture reduction is realized by controlling the humeral head to complete reduction through a kirschner wire.
Step 6: implanting a locking nail and a fixing plate according to the condition of the fracture block; inserting a guide cone assembly on the aiming block (
Protective sleeve, drill bushing and guide cone), then the guide cone is taken out through the hole site on the aiming frame, the drill bit is inserted, and the hole is carefully drilled until the plane of the subchondral bone is reached; then the fixing plate or/and the open type fixing plate can be selected according to the type of the fracture, and then the fixing plate is fixed through the locking nail.
And 7: according to the fracture condition, a 2.4 universal locking nail is selected to be placed, a drill bit is inserted, holes are carefully drilled, and a proper 2.4 universal nail is selected to be implanted.
And 8: inserting a cross pin, inserting a guide cone assembly on the aiming block (
Protective sleeves, drill sleeves, and guide cones); the guide cone is then removed and the two layers of cortex are drilled through until the tip of the drill bit has just pierced the inner cortex. And reading the length data of the screw on the depth finder, and selecting and placing a proper common nail hole.
And step 9: and disassembling the aiming frame and placing the tail cap, unscrewing the connecting bolt, disassembling the aiming frame, and placing the tail cap in the main nail of the humerus intramedullary nail. If necessary, a tuberosity screw is placed according to the type of the fracture, and a 4.0 locking nail with a proper length is selected and screwed in to fix the tuberosity.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the foregoing embodiments or equivalent substitutions for some technical features, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (3)
1. Humerus near-end intramedullary nail sight, its characterized in that: the humerus intramedullary nail main nail is detachably connected with a humerus intramedullary nail main nail (1) and comprises a bracket part (21) and an aiming extension bracket (22);
the support part (21) is U-shaped and comprises an L-shaped support (211) formed by connecting a vertical rod (213) and a transverse rod (212) and a connecting rod (214) connected to the bottom of the vertical rod (213), wherein an extending frame fixing hole (215) penetrating along the far and near directions and a near end aiming hole (216) penetrating vertically are arranged on the transverse rod (212), and the near end aiming hole (216) corresponds to a transverse locking nail hole (13) of the main intramedullary nail (1);
the proximal side surface of the aiming extension frame (22) is provided with a locking rod (221) corresponding to the extension frame fixing hole (215), and the surface of the aiming extension frame (22) is provided with a distal aiming hole (222) corresponding to a common nail hole (15) and a functional hole (16) of the humerus intramedullary nail main nail (1).
2. The proximal humeral intramedullary nail aimer of claim 1, wherein: the two near-end aiming holes (216) are distributed in the middle section of the transverse rod (212), the two near-end aiming holes are distributed in the end section of the transverse rod (212), and the two near-end aiming holes (216) in the middle section of the transverse rod (212) and the two near-end aiming holes (216) in the end section of the transverse rod (212) are distributed along the far and near directions.
3. The proximal humeral intramedullary nail aimer of claim 1, wherein: an extension part (223) is arranged on the far-end side surface of the aiming extension frame (22), and a far-end aiming hole (222) is formed in the extension part (223); two sides of the aiming extension frame (22) are provided with mirror-symmetrical extension wings (224), and three far-end aiming holes (222) are distributed on the extension wings (224).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121009076.2U CN215458535U (en) | 2021-05-12 | 2021-05-12 | Proximal humerus intramedullary nail sighting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121009076.2U CN215458535U (en) | 2021-05-12 | 2021-05-12 | Proximal humerus intramedullary nail sighting device |
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| CN215458535U true CN215458535U (en) | 2022-01-11 |
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| CN202121009076.2U Active CN215458535U (en) | 2021-05-12 | 2021-05-12 | Proximal humerus intramedullary nail sighting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113274110A (en) * | 2021-05-12 | 2021-08-20 | 大博医疗科技股份有限公司 | Internal fixing system for proximal humerus intramedullary nail |
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2021
- 2021-05-12 CN CN202121009076.2U patent/CN215458535U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113274110A (en) * | 2021-05-12 | 2021-08-20 | 大博医疗科技股份有限公司 | Internal fixing system for proximal humerus intramedullary nail |
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