Single-hand rod bending device

Abstract

The utility model discloses a single-hand bar bending device, which belongs to the technical field of spine surgery, solves the problems of shape fixing and complicated operation in the bending process of an orthopedic bar, and can be used for bending the orthopedic bar by reducing the size of a handle, utilizing two oblong holes of a front force arm, enabling two pin shafts of a central seat 12 to slide back and forth and forming an oblong groove at the rear end of the central seat 12. The two handles and the four stabilizing pieces are fixed together through the fixing pin, the pin shaft can slide in the long circular groove of the center base, the front protrusion of the center base 12 abuts forwards, the front force arm moves backwards, and the two cylinders on the front force arm and the front protrusion of the center base 12 form an arc-shaped triangular point. After a straight rod is placed, the rod is gradually bent along with the movement of the central seat 12. And one-hand operation and repeated bending are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a single hand bending rod device and belongs to the technical field of spine surgery, providing a tool for pre-bending orthopedic rods to achieve the effect of single hand bending and multiple bending. BACKGROUND

[0002] In the process of spine surgery, the combination of nail and rod hooks is used most frequently, mainly to solve the problems of spine orthopedics, spine slippage, spine trauma and other spine problems. The indispensable tool for this surgery is an orthopedic rod. Because of the complex shape of the human spine tissue, the orthopedic rod is straight when it leaves the factory and is not suitable for application. Before installation, the orthopedic rod must be bent into the required shape. There are many bending pliers on the market, but two people are needed to cooperate when bending, and the bending is fixed in style. It cannot be bent at any time according to the current situation of the patient's spine. It needs to be bent multiple times. In order to achieve this purpose, our company has developed a single hand bending device. No matter what style of bend is folded, it can be folded at any time, which is convenient and fast and can be bent at any time according to the needs of the surgery. SUMMARY

[0003] The present application aims to provide a single hand bending rod device that can achieve multiple bending, bending at any time, and single hand operation to complete the surgery and improve the flexibility of the surgery.

[0004] The utility model provides the following technical scheme:

[0005] The single hand bending rod device is composed of front force arm A1, front force arm B2, lower fixed plate 3, lower stabilizing sheet 4, stabilizing sheet center shaft 5, handle A6, handle B7, fixed washer 8, upper stabilizing sheet 9, pin shaft 10, fixed shaft 11 and center seat 12. The center seat 12 has two pin shafts in front of it, which pass through the two holes in the front force arm A1 and the front force arm B2, and are fixed together with the lower fixed plate 3. The fixed shaft 11 fixes the center seat 12, the front ends of the two handles, and the lower fixed plate 3 together. The front force arm A1 is fixed with the handle B7, and the front force arm B2 is fixed with the handle A6. The feature is that the front force arm A1 and the front force arm B2 have two long round holes, the two pin shafts of the center seat 12 pass through the two long round holes of the front force arm, and can slide in the long round holes. One end of each of the two lower stabilizing sheets 4 is fixed below the handle, and one end of each of the two upper stabilizing sheets 9 is fixed above the handle. The pin shaft 10 passes through the upper stabilizing sheet, the handle, and the lower stabilizing sheet from behind to fix them. The stabilizing sheet center shaft 5 passes through the two upper stabilizing sheets 9, the center shaft 12, and the two lower stabilizing sheets 4, and is fixed from behind with the fixed washer. Holding the two handles, the center seat 12 is moved forward, the front protrusion of the center seat 12 is pushed forward, the front force arm is moved backward, and the two cylinders on the front force arm and the front protrusion of the center seat 12 form an arc-shaped triangular point. When the straight rod is placed on it, it will be gradually bent along with the movement of the center seat 12.

[0006] Further, each of the front force arms A1 and B2 has a cylinder with a 6-8mm wide shallow groove in the middle, and the front part of the center seat 12 has a circular protrusion with a plate thickness of 8mm and an arc-shaped shallow groove in the middle.

[0007] Further, the hole at the rear end of the center seat 12 is an oblong hole, the two ends of the stabilizing piece center shaft 5 pass through the fixing washer 8 and are in interference fit with the stabilizing piece, and the upper and lower stabilizing pieces are in sliding fit above and below the oblong hole of the center seat 12.

[0008] The utility model has the following advantages:

[0009] Single-handed operation: simplifies the surgical procedure, reduces the work intensity of medical staff, and improves the surgical efficiency.

[0010] Flexible operation: through the delicate design of the transmission mechanism, medical staff can easily realize multi-angle and multi-shape bending of the orthopedic rod in the spine, meeting the diversified bending needs of surgery.

[0011] Lightweight and durable: the overall structure is compact and lightweight, facilitating carrying and storage; at the same time, high-quality materials are used to ensure stability and reliability during long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is an exploded view of the utility model.

[0013] Figure 2 is an assembly schematic view of the utility model.

[0014] Figure 3 is a schematic view of the utility model with a straight rod.

[0015] Figure 4 is a schematic view of the utility model with a bent rod. DETAILED DESCRIPTION

[0016] The operation of the utility model is described as follows in combination with the drawings:

[0017] When operating the utility model, first determine the length of the pre-bent rod, determine the approximate pre-bent shape according to the image, and place the rod between the front force arms and the center seat of the utility model as shown in the style Figure 3 , hold the two handles tightly with one hand, drive the center seat forward, the front end of the center seat is a curved protrusion, and the two cylinders of the front force arm form a clamping groove, when the protrusion at the front end of the center seat pushes the orthopedic rod forward, the two cylinders of the front force arm push the orthopedic rod backward, and three points form a resistance point, extruding the orthopedic rod to deform, according to the bending requirements, change different bending points, until the reasonable arc is bent, and each pre-bending only needs to hold the two handles tightly with one hand, and the handle is held to the folding position, then released and held again, and repeated several times to achieve the purpose of pre-bending.

Claims

1. The single-handed rod bender is composed of a front lever arm A (1), a front lever arm B (2), a lower fixing plate (3), a lower stabilizing plate (4), a center axis of the stabilizing plate (5), a handle A (6), a handle B (7), a fixing washer (8), an upper stabilizing plate (9), a pin (10), a fixing axis (11), and a center seat (12). The single-handed rod bender is characterized in that: The front force arm A (1) and the front force arm B (2) have two oblong holes. The two pins of the center seat (12) pass through the two oblong holes of the front force arm and can slide in the oblong holes. One end of the two lower stabilizing plates (4) is fixed to the bottom of the two handles respectively. One end of the two upper stabilizing plates (9) is fixed to the top of the two handles respectively. The pins (10) pass through the upper stabilizing plates, the handles, and the lower stabilizing plates respectively and are fixed thereafter. The center axis (5) of the stabilizing plates passes through the two upper stabilizing plates (9), the center seat (12), and the two lower stabilizing plates (4) respectively and are fixed thereafter with fixing washers (8). The two handles are held by hand to drive the center seat (12) forward. The front protrusion of the center seat (12) pushes forward, and the two cylinders of the front force arm move backward. The two cylinders on the front force arm and the front protrusion of the center seat (12) form an arc-shaped triangle point. When the straight rod is placed, the rod is gradually bent as the center seat (12) moves.

2. The one-handed rod bender according to claim 1, characterized in that: There is a cylinder on each of the front lever arm A (1) and the front lever arm B (2), with a shallow groove of 6-8mm width in the middle of the cylinder, and a circular protrusion at the front of the center seat (12). The protrusion is 8mm thick and has an arc-shaped shallow groove in the middle.

3. The one-handed rod bender according to claim 1, characterized in that: The hole at the rear end of the center seat (12) is an oblong hole. The two ends of the center axis of the stabilizing plate (5) pass through the fixing washers (8), which are interference fit with the stabilizing plate and clearance fit with the oblong hole of the center seat (12). The upper and lower stabilizing plates slide above and below the oblong hole of the center seat (12).

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