Anchoring and fixing device for pelvic anterior ring

Abstract

The utility model provides a pelvic anterior ring anchoring and fixing device which comprises a connecting frame, sliding sleeves are arranged at the two ends of the connecting frame in a sliding and rotatable sleeved mode, installation sleeves are arranged on the sliding sleeves, iliac nails are arranged in the installation sleeves in a penetrating mode, and the iliac nails are fixedly connected with the installation sleeves through first fixing mechanisms. A mounting shaft connected through a second fixing mechanism is arranged on the connecting frame, the position of the mounting shaft can be adjusted and fixed in multiple directions through the second fixing mechanism, and a pubis nail is arranged on the mounting shaft. According to the device, the iliac nail and the pubis nail can be conveniently and rapidly adjusted to proper positions, the nails can be rapidly placed to be connected with the pelvic anterior ring to complete external fixation under the emergency treatment condition, the fixation strength is better than that of a traditional external fixation support, meanwhile, the function of correcting fracture displacement is achieved, iliopsoas and lumbar muscles cannot be pressed, and the fixing effect is good. Therefore, the hip joint movement of the postoperative patient is not limited, the postoperative squatting and other actions of the patient are not affected, and the practicability is high.

Description

Technical Field

[0001] The utility model specifically relates to a pelvic front ring anchoring and fixing device. Background Art

[0002] Pelvic fracture is a serious trauma. The first aid measure in the pre-hospital stage is to use a pelvic fixation belt to fix the pelvis, and during the treatment process, the anterior ring of the pelvic fracture is fixed by three methods: external fixation, plate fixation or nail rod internal fixation.

[0003] However, external fixators are mostly used for early temporary fixation of patients with pelvic fractures during emergency trauma surgery. The operation is quick and convenient, but the fixation strength is average and it is easy to loosen after a few weeks. Plate internal fixation is mostly used for elective surgical reconstruction of pelvic fractures. The fracture reduction and fixation are relatively accurate and the fixation strength is good, but it requires open reduction, which is traumatic and the surgical technique is relatively complex. The nail-rod internal fixation is mainly the INFIX fixation method commonly used in clinical practice. It uses a minimally invasive incision. The iliac nails are drilled into the ilium. The long rod passes through the subcutaneous tissue of the lower abdomen to connect the bilateral iliac nails to fix the anterior pelvic ring. The operation is relatively minimally invasive, but it cannot correct or fix the displacement of the anterior ring, especially the pubic and sciatic branches of the anterior ring. In addition, the long rod for anterior ring fixation needs to be pre-bent. If it is not placed in a good position, it is easy to compress the femoral blood vessels and nerves.

[0004] Existing treatment methods for pelvic fractures cannot combine the advantages of firm fixation, convenient operation and correction of fracture displacement, resulting in certain disadvantages in pelvic fixation. Therefore, a pelvic anterior ring anchoring fixation device is proposed to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model proposes a pelvic anterior ring anchoring fixation device to solve the technical problem raised in the above background technology that the existing pelvic fracture treatment methods cannot have the advantages of firm fixation, convenient operation and the ability to correct fracture displacement, thereby resulting in certain disadvantages in pelvic fixation.

[0006] To achieve the above purpose, the utility model provides the following technical solution, a pelvic anterior ring anchoring and fixing device, comprising:

[0007] Connecting frame;

[0008] Sliding sleeves are provided in two groups, and are respectively slidably and rotatably provided at both ends of the connecting frame, and mounting sleeves are provided on the sliding sleeves;

[0009] an iliac nail, inserted into the mounting sleeve and fixedly connected thereto via a first fixing mechanism; and

[0010] The mounting shaft is connected to the connecting frame through a second fixing mechanism. The position of the mounting shaft can be adjusted and fixed in multiple directions through the second fixing mechanism. A pubic bone nail is provided on the mounting shaft.

[0011] In a preferred embodiment, the sliding sleeve can slide along the connecting frame. A first fixing nail is screwed on the sliding sleeve, and the end of the first fixing nail abuts against the connecting frame.

[0012] In a preferred embodiment, the first fixing mechanism includes:

[0013] An expansion threaded sleeve is inserted into the mounting sleeve, and the iliac bone nail is slidably inserted into the expansion threaded sleeve along its axis; and

[0014] A first nut is sleeved on the expansion threaded sleeve and screwed thereto.

[0015] In a preferred embodiment, a toothed block is provided on the mounting sleeve, a toothed ring is sleeved on the iliac bone nail, the toothed ring meshes with the toothed block, and the toothed ring abuts against the first nut.

[0016] In a preferred embodiment, an adjusting rod is provided at the end of the iliac bone nail.

[0017] In a preferred embodiment, the second fixing mechanism includes:

[0018] A first mounting hook is provided on the connecting frame, and a mounting post is provided on the first mounting hook;

[0019] A first connecting sleeve is slidably and rotatably provided on the mounting post along the axis of the mounting post; and

[0020] A second mounting hook is provided on the first connecting sleeve, and the mounting shaft is arranged in the second mounting hook.

[0021] In a preferred embodiment, a second fixing nail is screwed on the first mounting hook, and the end of the second fixing nail abuts against the connecting frame.

[0022] In a preferred embodiment, a second nut is screwed on the rod on the periphery of the first connecting sleeve. A second connecting sleeve is provided on the second mounting hook. The second connecting sleeve is sleeved on the rod and abuts against the periphery of the mounting post. The second nut abuts against the second connecting sleeve.

[0023] In a preferred embodiment, a third fixing nail is screwed on the second mounting hook, and the end of the third fixing nail abuts against the mounting shaft.

[0024] In a preferred embodiment, the end of the pubic bone nail is slidably and rotatably connected to the mounting shaft along the axis of the mounting shaft.

[0025] Compared with the prior art, the present utility model has the following beneficial effects:

[0026] When the device is in use, the iliac bone of the patient is fixed by the iliac bone nail, and the pubic bone of the patient is fixed by the pubic bone nail. Moreover, the angle and position of the iliac bone nail can be adjusted by sliding and rotating the sliding sleeve on the connecting frame. Then, the iliac bone nail slides in the mounting sleeve and is fixed by the first fixing mechanism to adjust the protruding length of the iliac bone nail. Furthermore, the position of the mounting shaft is adjusted and fixed in multiple directions by the second fixing mechanism to adjust the position of the pubic bone nail in multiple directions, facilitating the quick adjustment of the iliac bone nail and the pubic bone nail to appropriate positions. Under emergency conditions, the nail placement can be quickly completed to connect the anterior pelvic ring for external fixation. The fixation strength is superior to that of traditional external fixation brackets. At the same time, it has the function of correcting fracture displacement, does not cause compression on the iliopsoas muscle, and thus the hip joint movement of the patient after surgery is not restricted, and actions such as squatting after surgery of the patient are not affected, with strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present utility model, the drawings required for use in the specific embodiments will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0028] Figure 1 Schematic diagram of the use state of a pelvic anterior ring anchoring and fixing device of the present utility model;

[0029] Figure 2 Schematic three-dimensional structure diagram of a pelvic anterior ring anchoring and fixing device provided by the present utility model;

[0030] Figure 3 Schematic structure diagram of the connecting rod in a pelvic anterior ring anchoring and fixing device of the present utility model;

[0031] Figure 4 Schematic structure diagram of the iliac bone nail and the parts above it in a pelvic anterior ring anchoring and fixing device of the present utility model;

[0032] Figure 5 For Figure 4 Schematic structure diagram after disassembly;

[0033] Figure 6 Schematic structure diagram of the pubic bone nail and the parts above it in a pelvic anterior ring anchoring and fixing device of the present utility model;

[0034] Figure 7 For Figure 6 Schematic structure diagram after disassembly.

[0035] Reference numerals:

[0036] 101, connecting frame;

[0037] 201, iliac bone nail; 202, adjusting rod;

[0038] 301, sliding sleeve; 302, first fixing nail; 303, mounting sleeve; 304, tooth block; 305, tooth ring; 306, expansion screw sleeve; 307, first nut;

[0039] 401, mounting post; 402, first mounting hook; 403, second fixing nail;

[0040] 501, second mounting hook; 502, second connecting sleeve; 503, first connecting sleeve; 504, second nut; 505, third fixing nail; 506, mounting shaft; 507, pubic bone nail. Detailed implementation manners

[0041] The embodiments of the technical solution of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0042] Embodiment:

[0043] As Figures 1 to 4 shown, the present utility model provides a pelvic anterior ring anchoring and fixing device, including a connecting frame 101. Both ends of the connecting frame 101 are sleeved with a sliding sleeve 301 that can slide and rotate. An installation sleeve 303 is arranged on the sliding sleeve 301. An iliac bone nail 201 is inserted into the installation sleeve 303. The sliding sleeve 301 can slide along the connecting frame 101. A first fixing nail 302 is screwed on the sliding sleeve 301, and the end of the first fixing nail 302 abuts against the connecting frame 101.

[0044] After the sliding sleeve 301 is slid and rotated on the installation sleeve 303, the first fixing nail 302 is rotated until the end of the first fixing nail 302 abuts against the connecting frame 101, so that the position and angle of the sliding sleeve 301 on the connecting frame 101 can be fixed, facilitating the fixing of the position and angle of the iliac bone nail 201. The iliac bone nail 201 is used to penetrate the iliac bone of the pelvis. The connecting frame 101 can be designed in various models according to the anatomical data of the pelvic region of Chinese people, which can meet the fixing requirements of people with different body types and can effectively avoid the occurrence of vascular and nerve compression.

[0045] As Figure 2 、 4, as shown in Figures 5, in this embodiment, the iliac bone nail 201 and the mounting sleeve 303 are fixedly connected through a first fixing mechanism. The first fixing mechanism includes an expansion threaded sleeve 306 disposed within the mounting sleeve 303. The iliac bone nail 201 is slidably disposed within the expansion threaded sleeve 306 along its axis. A first nut 307 is screwed onto the expansion threaded sleeve 306. By rotating the first nut 307, the expansion threaded sleeve 306 can be driven to slide within the first nut 307. Furthermore, the position of the iliac bone nail 201 within the mounting sleeve 303 can be fixed by tightening the bulging portion on the expansion threaded sleeve 306, so as to adjust the protruding length of the iliac bone nail 201. Moreover, a tooth block 304 is provided on the mounting sleeve 303, and a tooth ring 305 is sleeved on the iliac bone nail 201. The tooth ring 305 meshes with the tooth block 304, and the tooth ring 305 abuts against the first nut 307. Through the cooperation of the tooth ring 305 and the tooth block 304, the firmness of the fixation of the iliac bone nail 201 can be improved, and the displacement of the iliac bone nail 201 can be avoided.

[0046] As Figure 4 shown, in this embodiment, an adjusting rod 202 is provided at the end of the iliac bone nail 201. After the iliac bone nail 201 is inserted through the anterior inferior iliac spine channel, the adjusting rod 202 can be used as a reset rocker to perform a reset operation on the anterior ring, and the strength is greater than that of the traditional external fixation nail. The iliac bone nail 201 adopts a break-off design. Compared with the traditional U-shaped nail, the tail notch is smaller, the irritation to the skin is smaller, and the patient's postoperative experience is better.

[0047] As Figure 3 , 6 、7 shown, in this embodiment, a mounting shaft 506 connected through a second fixing mechanism is provided on the connecting frame 101. The position of the mounting shaft 506 can be adjusted and fixed in multiple directions through the second fixing mechanism. A pubic bone nail 507 is provided on the mounting shaft 506. The second fixing mechanism includes a first mounting hook 402 provided on the connecting frame 101. An installation column 401 is provided on the first mounting hook 402. A second fixing nail 403 is screwed onto the first mounting hook 402, and the end of the second fixing nail 403 abuts against the connecting frame 101.

[0048] The first mounting hook 402 can be slid and rotated on the connecting frame 101, and by rotating the second fixing nail 403 so that its end abuts against the connecting frame 101, the position and angle of the installation column 401 can be adjusted and fixed.

[0049] The second fixing mechanism further includes a first connecting sleeve 503 which is slidable and rotatable along the axis of the mounting post 401 and is arranged on the mounting post 401. A second nut 504 is screwed on the rod on the circumferential side of the first connecting sleeve 503. A second connecting sleeve 502 is arranged on the second mounting hook 501. The second connecting sleeve 502 is sleeved on the rod and abuts against the circumferential side of the mounting post 401. The second nut 504 abuts against the second connecting sleeve 502. A second mounting hook 501 is arranged on the first connecting sleeve 503, and a mounting shaft 506 is arranged in the second mounting hook 501.

[0050] The first connecting sleeve 503 can be slid and rotated along the mounting post 401. The second connecting sleeve 502 can rotate on the rod on the circumferential side of the first connecting sleeve 503. By rotating the second nut 504, the second connecting sleeve 502 can be driven to slide on the rod on the circumferential side of the first connecting sleeve 503 until the second connecting sleeve 502 abuts against the mounting post 401, so as to fix the positions of the first connecting sleeve 503 and the second connecting sleeve 502 at the same time, and to adjust and fix the position of the second mounting hook 501 in multiple directions.

[0051] As Figure 6 , 7 shown, in this embodiment, a third fixing nail 505 is screwed on the second mounting hook 501, and the end of the third fixing nail 505 abuts against the mounting shaft 506. The end of the pubic bone nail 507 is slidably and rotatably connected to the mounting shaft 506 along the axis of the mounting shaft 506. After adjusting and fixing the position of the second mounting hook 501 in multiple directions, the position of the mounting shaft 506 in the second mounting hook 501 can be fixed by rotating the third fixing nail 505. The pubic bone nail 507 selects a traditional installation and fixing method, so that the position and angle of the pubic bone nail 507 can be adjusted and fixed in multiple directions, so as to quickly adjust the pubic bone nail 507 to a suitable position for use, and the operation is more convenient. The elective surgery can be used as an internal fixation system to fix the anterior pelvic ring, and can selectively fix the displaced pubic ramus, and the fixation strength is better than that of the traditional nail-rod fixation system.

[0052] Moreover, the device realizes the precision and minimally invasive of the reduction and fixation of the anterior pelvic ring fracture. The operation tools of the system are simple, and each component can be arbitrarily combined to complete two types of surgeries, external fixation and internal fixation of the anterior pelvic ring, with both portability and flexibility.

[0053] The specific usage mode and beneficial effects of the utility model:

[0054] When in use, the iliac bone of the patient is fixed by the iliac bone nail 201, and the pubic bone of the patient is fixed by the pubic bone nail 507. The angle and position of the iliac bone nail 201 can be adjusted by sliding and rotating the sliding sleeve 301 on the connecting frame 101. Then, the iliac bone nail 201 slides in the mounting sleeve 303, and the first nut 307 is tightened. The position of the iliac bone nail 201 in the mounting sleeve 303 is fixed by the bulging part of the expansion thread sleeve 306, so as to adjust the protruding length of the iliac bone nail 201.

[0055] Furthermore, by sliding and rotating the first mounting hook 402 on the connecting frame 101, sliding and rotating the first connecting sleeve 503 on the mounting post 401, and rotating the second connecting sleeve 502 along the rod on the circumferential side of the first connecting sleeve 503, the position of the mounting shaft 506 can be adjusted and fixed in multiple directions, so as to adjust the position of the pubic bone nail 507 in multiple directions. It is convenient and fast to adjust the iliac bone nail 201 and the pubic bone nail 507 to the appropriate positions. Under emergency conditions, the nail insertion and connection of the anterior pelvic ring external fixation can be quickly completed. The internal fixation and external fixation of the anterior pelvic ring can be flexibly converted. The fixation strength is better than that of the traditional external fixation bracket. At the same time, it has the function of correcting fracture displacement, does not cause compression on the iliopsoas muscle, and thus the hip joint activity of the patient after surgery is not restricted, and the actions such as squatting after surgery of the patient are not affected. The practicability is relatively strong. The flexible conversion between internal fixation and external fixation can be carried out simultaneously.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A pelvic anterior ring anchoring and fixing device, characterized in that It includes: A connecting frame (101); Sliding sleeves (301), there are two groups of them, and they are respectively slidably and rotatably sleeved at both ends of the connecting frame (101), and an installation sleeve (303) is arranged on the sliding sleeve (301); Ilium nails (201), which are inserted into the installation sleeve (303) and fixedly connected to it through a first fixing mechanism; and An installation shaft (506), which is connected to the connecting frame (101) through a second fixing mechanism, and the position of the installation shaft (506) can be adjusted and fixed in multiple directions through the second fixing mechanism, and a pubis nail (507) is arranged on the installation shaft (506).

2. The pelvic anterior ring anchoring and fixing device according to claim 1, wherein: The sliding sleeve (301) can slide along the connecting frame (101), and a first fixing nail (302) is screwed on the sliding sleeve (301), and the end of the first fixing nail (302) abuts against the connecting frame (101).

3. The pelvic anterior ring anchoring and fixing device according to claim 1, characterized in that, The first fixing mechanism includes: An expansion threaded sleeve (306), which is inserted into the installation sleeve (303), and the ilium nail (201) is slidably inserted into the expansion threaded sleeve (306) along its axis; and A first nut (307), which is sleeved on the expansion threaded sleeve (306) and screwed to it.

4. The pelvic anterior ring anchoring and fixing device according to claim 3, wherein: Tooth blocks (304) are arranged on the installation sleeve (303), a tooth ring (305) is sleeved on the ilium nail (201), the tooth ring (305) meshes with the tooth blocks (304), and the tooth ring (305) abuts against the first nut (307).

5. The anterior pelvic ring anchoring and fixing device according to claim 1, characterized in that: An adjusting rod (202) is arranged at the end of the ilium nail (201).

6. The pelvic anterior ring anchoring and fixing device according to claim 1, characterized in that, The second fixing mechanism includes: A first installation hook (402), which is arranged on the connecting frame (101), and an installation post (401) is arranged on the first installation hook (402); A first connecting sleeve (503), which is slidably and rotatably arranged on the installation post (401) along the axis of the installation post (401); and A second installation hook (501), which is arranged on the first connecting sleeve (503), and the installation shaft (506) is arranged in the second installation hook (501).

7. The pelvic anterior ring anchoring and fixing device according to claim 6, wherein: A second fixing nail (403) is screwed on the first installation hook (402), and the end of the second fixing nail (403) abuts against the connecting frame (101).

8. The pelvic anterior ring anchoring and fixing device according to claim 6, wherein: A second nut (504) is screwed on the rod on the circumferential side of the first connecting sleeve (503), a second connecting sleeve (502) is arranged on the second installation hook (501), the second connecting sleeve (502) is sleeved on the rod and abuts against the circumferential side of the installation post (401), and the second nut (504) abuts against the second connecting sleeve (502).

9. The anterior pelvic ring anchoring and fixing device according to claim 6, characterized in that: A third fixing nail (505) is screwed on the second installation hook (501), and the end of the third fixing nail (505) abuts against the installation shaft (506).

10. The pelvic anterior ring anchoring and fixing device according to claim 1, characterized in that: The end of the pubis nail (507) is slidably and rotatably connected to the installation shaft (506) along the axis of the installation shaft (506).

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