Fracture fixation mechanism

Abstract

The present invention provides a fracture fixation mechanism, including a fixing plate and a connecting piece, wherein one or more pits facing the outside of the fixing plate are arranged in sequence along the length direction of the fixing plate; a first through hole and a second through hole are respectively provided on both sides along the width direction of the fixing plate, and the first through hole and the second through hole are respectively connected to the pits and arranged on both sides of the pits; the connecting piece is wrapped along the circumference of the fracture site and the two ends can respectively pass through the first through hole and the second through hole and be connected in the pits so that the fixing plate contacts and abuts against the fracture site; the present invention fixes the fixing plate to the fracture site by using a flexible connecting piece instead of the screws in the prior art; the fixing and postoperative removal of the fixing plate are easy to operate and simple in structure; there is no secondary damage to the bone when the fixing plate is removed, which greatly reduces the harm to the human body and has strong practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a fracture fixing mechanism. Background Art

[0002] Fracture is the most common disease in orthopedics. Severe fractures often require surgical bone setting for treatment. There are two existing fixation methods for bone setting treatment. One requires the use of bone plates and screws, and the other uses bone plates and steel wires for fixation.

[0003] The method of screw fixation requires drilling threaded holes on the two broken bones, passing the screws through the bone plates, and then threading the screws into the screw holes, and then using nuts to achieve secondary fixation of the ends. However, after the fracture is healed, the screws and bone plates need to be removed. When removing the screws, the screws are directly unscrewed. However, depending on the degree of recovery of different patients, the screws and bones will be assimilated, that is, the bone threads have disappeared after regrowth. If the screws are forcibly unscrewed at this time, it may cause irreversible serious consequences, such as bone fractures. If the steel nails are not removed, many sequelae may occur later, so the technical solution of using steel nails for fixation has many defects.

[0004] When the steel wire is used for fixation, the rigidity of the steel wire can easily cause damage to the contact part of the human body when tightening and fixing the bone plate. At the same time, the steel wire is relatively rigid and not easy to get tangled, which prolongs the operation time and brings different degrees of obstacles to the operation.

[0005] Based on the above situation, it is urgent to study a new fixation method to reduce the harm to patients.

[0006] Patent document CN202051803U discloses an instrument for fixing limbs in case of fracture. In view of the problem that the existing fracture fixator has a bulky structure and is not flexible enough, the present invention provides a fracture fixator, including a steel nail, nuts threadedly connected to the steel nail are arranged at both ends of the steel nail, and a No. 1 baffle is sleeved on the steel nail inside each nut, and the edge of the No. 1 baffle is also connected to the edge of the No. 2 baffle, and the edge of the No. 2 baffle is also connected to the edge of the No. 3 baffle. However, this design still uses a steel nail fixation method, which is easy to cause great damage to the patient's bones when the screws are removed after surgery, and the technical solution needs to be further improved. Summary of the invention

[0007] In view of the defects in the prior art, an object of the present invention is to provide a fracture fixation mechanism.

[0008] A fracture fixation mechanism provided according to the present invention comprises a fixation plate and a connecting piece;

[0009] One or more recesses are sequentially arranged on the fixing plate along the length direction of the fixing plate and are directed toward the outside of the fixing plate;

[0010] The fixing plate has a first through hole and a second through hole on both sides along the width direction of the fixing plate, and the first through hole and the second through hole are respectively connected to the pit and arranged on both sides of the pit;

[0011] The connecting member is wound around the fracture site and both ends thereof can pass through the first through hole and the second through hole respectively and be connected in the pit so that the fixing plate contacts and abuts against the fracture site.

[0012] Preferably, the connecting piece is made of high molecular polymer.

[0013] Preferably, the fixing plate is made of titanium alloy or stainless steel plate.

[0014] Preferably, a plurality of the recesses are arranged on the fixing plate at intervals; or

[0015] A plurality of the recesses are arranged continuously on the fixing plate.

[0016] Preferably, the inner side surface of the fixation plate is a curved surface structure matching the outer surface of the fracture site.

[0017] Preferably, two ends of the connecting member pass through the first through hole and the second through hole respectively and are knotted and connected in the pit;

[0018] The knotted structure formed after knotting is located inside the pit and does not protrude from the outer surface of the fixing plate.

[0019] Preferably, the pits are smoothly transitioned to the connection points with the first through hole and the second through hole respectively.

[0020] Preferably, the width of the middle portion of the connector is greater than the width of the knotting portions at both ends.

[0021] Preferably, the connecting member is a flat belt structure.

[0022] Preferably, the cross section of the connecting piece is any one of circular, semicircular and rectangular.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention uses a flexible connector to replace the screws in the prior art to fix the fixing plate at the fracture site. The fixing and postoperative removal of the fixing plate are easy to operate and have a simple structure. There is no secondary damage to the bone when removing the fixing plate, which greatly reduces the harm to the human body and has strong practicality.

[0025] 2. The arrangement structure of the pits and through holes on the fixing plate in the present invention is cleverly designed. The two ends of the connecting piece pass through the first through hole and the second through hole respectively and are knotted and connected in the pit. The knotted structure formed after knotting is located inside the pit and does not protrude from the outer surface of the fixing plate, thereby avoiding damage to the human body caused by knotting. The operation is simple and the operation time is shortened.

[0026] 3. The connecting piece in the present invention can adopt a flat belt structure. Increasing the width of the connecting piece on the outside of the bone can reduce the force per unit area on the outside of the bone, which is beneficial to protecting the human skeleton from damage.

[0027] 4. The connector in the present invention is made of ultra-high molecular polyethylene, which has good biocompatibility with the human body and will not have adverse effects on the surgical site of the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0029] Figure 1 It is a schematic diagram of the structure when the fixation plate in the present invention is fixed on the fracture site;

[0030] Figure 2 It is a schematic diagram of the structure when the pits on the fixed plate are arranged at intervals in the present invention;

[0031] Figure 3 It is a schematic diagram of the structure when the pits on the fixed plate are arranged continuously in the present invention.

[0032] The figure shows:

[0033] Fixed plate 1 First through hole 4

[0034] Connecting piece 2 Second through hole 5

[0035] Depression 3 Fracture site 6 DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0037] In order to solve the various defects of the prior art of using screws to fix fractures with a fixation plate, the present invention provides a fracture fixation mechanism, such as Figure 1 , Figure 2 As shown, it includes a fixing plate 1 and a connecting member 2.

[0038] The connecting member 2 is preferably a flat belt structure, and one or more pits 3 facing the outside of the fixing plate 1 are arranged in sequence on the fixing plate 1 along the length direction of the fixing plate 1, and a first through hole 4 and a second through hole 5 are respectively provided on both sides along the width direction of the fixing plate 1. The first through hole 4 and the second through hole 5 are respectively connected to the pit 3 and are arranged on both sides of the pit 3. The connecting member 2 is wrapped along the circumference of the fracture site 6, and the two ends can respectively pass through the first through hole 4 and the second through hole 5 and connect in the pit 3, so that the fixing plate 1 is in contact with the fracture site 6 and abuts against it, thereby realizing the support and fixation of the fracture site 6 by the fixing plate 1.

[0039] When fixing the fracture site 6 of the human body, the fixation plate 1 is placed on one side of the fracture site 6, the connector 2 is wrapped around the outside of the fracture site 6 and the two ends are respectively inserted from the outer end of the first through hole 4 and the outer end of the second through hole 5 and respectively passed out from the inner end of the first through hole 4 and the inner end of the second through hole 5, and the connector 2 is tied and tightened in the pit 3 using a knotter, so that the fixation plate 1 is fixed to the outside of the fracture site 6 by the connector 2 instead of screws.

[0040] The connector 2 is made of a material that is compatible with the human body, such as a high molecular polymer, preferably ultra-high molecular polyethylene. Ultra-high molecular polyethylene has good biocompatibility with the human body and will not have adverse effects on the surgical site of the human body.

[0041] Furthermore, the cross-section of the connecting member 2 may be circular, semicircular or rectangular, and the cross-section of the connecting member 2 preferably is a rectangular flat belt structure.

[0042] In practical applications, the width of the connector 2 can adopt the same structure in all parts, or the width of the middle part can be larger than the width of the knotting parts at both ends. By increasing the width on the outside of the bone, the force per unit area on the outside of the bone can be reduced, which is beneficial to protecting the human skeleton from damage. The narrower ends of the connector 2 are also convenient for passing through the first through hole 4 and the second through hole 5, which speeds up the operation and shortens the operation time.

[0043] The fixing plate 1 has a certain rigidity, and is preferably made of titanium alloy or stainless steel. The edge of the fixing plate 1 is a smooth structure, which is beneficial to protect the parts that the fixing plate 1 contacts from damage.

[0044] The inner side surface of the fixation plate 1 is a plane or a curved surface. Specifically, the inner side surface of the fixation plate 1 preferably matches the outer shape of the fracture site 6 to achieve the effect of fixing the fracture site 6 .

[0045] In a preferred embodiment, Figure 2 As shown, a plurality of recesses 3 are arranged at intervals on the fixing plate 1, and the number of recesses 3 matches the number of connecting members; in a variation, as shown in FIG. Figure 3 As shown, a plurality of recesses 3 are arranged continuously on the fixing plate 1 .

[0046] The connecting piece 2 is a flexible structure, which is convenient for operation of wrapping around the outside of the fracture site 6 during surgery, and also convenient for operation of passing the two ends of the connecting piece 2 through the first through hole 4 and the second through hole 5 respectively and then knotting and connecting in the pit 3. The knotted structure formed after knotting is located inside the pit 3 and does not protrude from the outer surface of the fixing plate 1.

[0047] In actual design, the pit 3 has a smooth transition with the connection between the first through hole 4 and the second through hole 5, so that the connecting piece 2 can pass through the first through hole 4 and the second through hole 5 smoothly, which is beneficial to improve the knotting speed, speed up the operation speed and shorten the operation time.

[0048] The working principle of the present invention is as follows:

[0049] During the operation, the fixation plate 1 is placed on one side of the fracture site 6, the wider side of the connector 2 is facing the fracture site 6 and wrapped around the outside of the fracture site 6, and the two ends of the connector 2 are respectively inserted from the outer end of the first through hole 4 and the outer end of the second through hole 5, and respectively passed out from the inner end of the first through hole 4 and the inner end of the second through hole 5. After being gathered at the pit 3, the connector 2 is tied and tightened with a knotter, so that the fixation plate 1 is fixed to the outside of the fracture site 6 by the connector 2 instead of the screws.

[0050] After the fracture site 6 is healed, when the patient needs to remove the fixation plate 1, the patient only needs to shorten the connecting piece 2 to remove the fixation plate 1 from the outside of the fracture site 6, without causing secondary damage to the bone, and the removal operation is simple.

[0051] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A fracture fixation mechanism, characterized in that: It comprises a fixing plate (1) and a connecting piece (2); One or more recesses (3) are arranged in sequence on the fixing plate (1) along the length direction of the fixing plate (1) and are directed toward the outside of the fixing plate (1); The fixing plate (1) has a first through hole (4) and a second through hole (5) on both sides along the width direction of the fixing plate (1), and the first through hole (4) and the second through hole (5) are respectively connected to the pit (3) and arranged on both sides of the pit (3); The connecting member (2) is wound around the fracture site (6) and its two ends can respectively pass through the first through hole (4) and the second through hole (5) and connect in the pit (3), thereby making the fixing plate (1) contact and abut against the fracture site (6).

2. The fracture fixation mechanism according to claim 1, characterized in that: The connecting piece (2) is made of high molecular polymer.

3. The fracture fixation mechanism according to claim 1, characterized in that: The fixing plate (1) is made of titanium alloy or stainless steel plate.

4. The fracture fixation mechanism according to claim 1, characterized in that: A plurality of the recesses (3) are arranged at intervals on the fixing plate (1); or A plurality of the recesses (3) are arranged continuously on the fixing plate (1).

5. The fracture fixation mechanism according to claim 1, characterized in that: The inner side surface of the fixing plate (1) is a curved surface structure matching the outer surface of the fracture site (6).

6. The fracture fixation mechanism according to claim 1, characterized in that: The two ends of the connecting member (2) pass through the first through hole (4) and the second through hole (5) respectively and are knotted and connected in the pit (3); The knotted structure formed after knotting is located inside the recess (3) and does not protrude from the outer surface of the fixing plate (1).

7. The fracture fixation mechanism according to claim 1, characterized in that: The pit (3) has a smooth transition with the connection points with the first through hole (4) and the second through hole (5).

8. The fracture fixation mechanism according to claim 1, characterized in that: The width of the middle portion of the connecting piece (2) is greater than the width of the knotting portions at both ends.

9. The fracture fixation mechanism according to claim 1, characterized in that: The connecting piece (2) is a flat belt structure.

10. The fracture fixation mechanism according to claim 1, characterized in that: The cross section of the connecting piece (2) is any one of circular, semicircular and rectangular.

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