阅读说明：本技术 一种用于四肢骨折的外固定器 (External fixator for limb fracture ) 是由 张浩然 康思淼 楚鹏 陈俊波 周忠诚 于 2019-11-27 设计创作，主要内容包括：一种用于四肢骨折的外固定装置,属于医疗器械领域,本发明包括复位固定器、骨针、伸缩杆、骨针固定杆、弯杆支柱和顶丝,骨针固定杆安装在复位固定器上,骨针固定杆两端各有一个固定孔,固定孔用于放置并固定骨针,复位固定器的左右两侧分别安装一个弯杆支柱,两个伸缩杆分别连接两个相邻复位固定器上的弯杆支柱,通过调节伸缩杆来调节相邻两个复位固定器的相对位置。本发明解决了现有单边外固定架系统在骨科手术中的功能局限的问题,同时也解决了环状外固定架系统的功能单一,结构复杂,价格昂贵,护理困难的问题,进而提供一种功能齐全、廉价且易于护理的骨科单边外固定装置。(The invention discloses an external fixing device for limb fracture, which belongs to the field of medical instruments and comprises a reduction fixator, a spicule, telescopic rods, a spicule fixing rod, bent rod pillars and jackscrews. The invention solves the problem of the function limitation of the existing unilateral external fixation frame system in the orthopedic operation, and simultaneously solves the problems of single function, complex structure, high price and difficult nursing of the annular external fixation frame system, thereby providing the orthopedic unilateral external fixation device with complete functions, low price and easy nursing.)

1. An external fixator for fracture of limbs, characterized in that: the reset fixture comprises a reset fixture (1), spicules (2), telescopic rods (3), spicule fixing rods (6), bent rod supporting columns (7) and jackscrews (9), the spicule fixing rods (6) are installed on the reset fixture (1), two ends of each spicule fixing rod (6) are respectively provided with a fixing hole (6-1), the fixing holes (6-1) are used for placing and fixing the spicules (2), the left side and the right side of the reset fixture (1) are respectively provided with one bent rod supporting column (7), the two telescopic rods (3) are respectively connected with the bent rod supporting columns (7) on two adjacent reset fixtures (1), and the relative positions of the two adjacent reset fixtures (1) are adjusted by adjusting the telescopic rods (3).

2. An external fixator for fracture of limbs according to claim 1, wherein: the resetting fixer (1) comprises a resetting ball (4), a jackscrew (9) and two fixing clamps (5), wherein the resetting ball (4) is spherical, a mounting hole (4-1) is formed in the center of the resetting ball (4), a bone needle fixing rod (6) is installed in the mounting hole (4-1), a threaded hole (4-2) is formed in the center of the resetting ball (4), the threaded hole (4-2) is perpendicular to the mounting hole (4-1) and is communicated with the mounting hole, the jackscrew (9) is installed in the threaded hole (4-2), the jackscrew (9) is matched with a first screw (10) and is screwed into the first screw (10) to lock the bone needle fixing rod (6), and the two fixing clamps (5) are respectively connected with two bent rod supporting columns (7).

3. An external fixator for fracture of limbs according to claim 2, wherein: the two fixing clamps (5) are identical and are hollow hemispheroids, a cylinder (5-3) is arranged on the outer side of each hemisphere, a square hole (5-2) is arranged on the outer side of each cylinder (5-3), and a bent rod support (7) is arranged in each square hole (5-2); the edge of the hollow hemisphere of the fixing clamp (5) is provided with four convex connecting parts (5-1), each convex connecting part (5-1) is provided with an internal thread hole, and a third screw (12) is screwed in to complete the fixing of the two fixing clamps (5).

4. An external fixator for fracture of limbs according to claim 2, wherein: the bone needle fixing rod is characterized in that the left end and the right end of the bone needle fixing rod (6) are respectively provided with a fixing hole (6-1), the fixing holes (6-1) are used for placing bone needles (2), ports at the left end and the right end of the bone needle fixing rod (6) are respectively provided with a locking port (6-2), and the locking ports (6-2) are used for screwing in second screws (11) to lock the bone needles (2).

5. An external fixator for fracture of limbs according to claim 1, wherein: the reset ball is characterized by further comprising an auxiliary reset rod (8), wherein the auxiliary reset rod (8) is cross-shaped, external threads are processed on the auxiliary reset rod (8), and the auxiliary reset rod (8) is matched with the reset ball (4) through the internal thread hole (4-2) in a screwed mode.

6. An external fixator for fracture of limbs according to claim 1, wherein: the telescopic rod (3) comprises a first external threaded rod (3-1), a second external threaded rod (3-2) and an internal threaded rod (3-3), the first external threaded rod (3-1) and the second external threaded rod (3-2) are round rods with external threads at one ends, internal threads matched with the first external threaded rod (3-1) and the second external threaded rod (3-2) are arranged inside the round rods of the internal threaded rod (3-3), and the left end and the right end of the first external threaded rod (3-1) and the second external threaded rod (3-2) are screwed into the internal threaded rod (3-3) respectively.

Technical Field

The invention relates to an external fixing device for limb fracture, belonging to the field of medical instruments.

Background

The existing external fixing devices for fixing the fracture of the limbs are various, and comprise a unilateral external fixing device, an annular external fixing device and the like. The long bone fracture operation process often includes "pull, reset, fixed" three stage, through pulling out two fracture ends, can reset more easily, then fixes steadily through the fixer, and following 3 are the external fixation device who is used for four limbs fracture fixed, its advantage and disadvantage are as follows:

the single-side external fixing frame system is composed of a bone needle, a connecting rod, a cross rod fixing clamp, a needle rod fixing clamp, a bent rod support and the like. Each fixing clamp can be randomly changed in position before being locked, and the mobility is large. The fixing frame only has a fixing function, needs repeated manual reduction in the operation before finally fixing the fracture, and the fracture end is likely to shift in the process of locking the fixing frame, thereby prolonging the operation time and aggravating the wound in the operation.

The computer-aided fracture reduction device based on six-foot double-ring platform design is commonly used in clinic and has the functions of traction, reduction and fixation. However, the device is an annular external fixing device, the nursing difficulty is far higher than that of a unilateral external fixing frame, the device is complex and not easy to carry, and the rod-shaped structure of the device is complex in process, so that the device is expensive, and the device is not yet clinically popularized in China at present.

An annular external fixing frame which is commonly used in clinic at present is provided with a plurality of spicules for fixing limbs and a bracket. The device can not play the role of traction in the operation process, and the reduction process still depends on the direct manipulation of doctors for reduction. Most of each case needs 6 rings for fixation, and each ring is connected with 2 spicules. The operation process is complex, the postoperative care is difficult, and the operation is generally only used for the cases of fracture or nonunion and bone defect which are combined with larger soft tissue injury.

Based on the above disadvantages of the existing external fixation devices for fixing four limbs fracture, there is a strong need to provide a single-side external fixation device for long bone fracture, which can complete traction, reduction and fixation processes simultaneously.

Disclosure of Invention

The invention aims to solve the problem of function limitation of the conventional unilateral external fixation frame system in orthopedic surgery and the problems of single function, complex structure, high price and difficult nursing of the annular external fixation frame system, thereby providing the orthopedic unilateral external fixation device with complete functions, low price and easy nursing.

The technical scheme of the invention is as follows:

an external fixator for fracture of limbs, characterized in that: including the fixer that resets, the spicule, the telescopic link, the spicule dead lever, knee pillar and jackscrew, the spicule dead lever is installed on the fixer that resets, and spicule dead lever both ends respectively have a fixed orifices, and the fixed orifices is used for placing and fixing the spicule, and a knee pillar is installed respectively to the left and right sides of the fixer that resets, and two adjacent knee pillars on the fixer that resets are connected respectively to two telescopic links, adjusts the relative position of two adjacent fixings that reset through adjusting the telescopic link.

In order to solve the problems that the prior clinical technical device has single function and complex structure and can not meet the requirements of traction, reset and fixation at the same time, the invention provides the technical scheme that:

preferably: the resetting fixer comprises a resetting ball, a jackscrew and two fixing clamps, wherein the resetting ball is spherical, a mounting hole is formed in the center of the resetting ball, a bone needle fixing rod is mounted in the mounting hole, a threaded hole is formed in the center of the resetting ball, the threaded hole is perpendicular to the mounting hole and communicated with the mounting hole, the jackscrew is mounted in the threaded hole, the jackscrew is matched with a first screw, the first screw is screwed in the jackscrew to lock the bone needle fixing rod, and the two fixing clamps are respectively connected with two bent rod supporting columns.

Preferably: the two fixing clamps are the same and are hollow hemispheroids, a cylinder is arranged on the outer side of each hemispheroid, a square hole is formed in the outer side of each cylinder, and a bent rod support is arranged in each square hole; there are four protruding connecting portions at the edge of fixation clamp cavity hemisphere, and every protruding connecting portion has the internal thread hole, and the fixing of two fixation clamps is accomplished to the third screw of screw in.

Preferably: both ends respectively have a fixed orifices about spicule dead lever, the fixed orifices is used for placing the spicule, the port at both ends respectively has a locking mouth about the spicule dead lever, the locking mouth is used for twisting second screw locking spicule, has avoided the spicule location of many times in the operation, increases the operation degree of difficulty, increases patient's misery.

Preferably: the auxiliary reset rod is in a cross shape formed by two cylinders, an external thread structure is vertically arranged outwards at the center of the cross and is screwed in and matched with a threaded hole in the reset ball, the reset ball is in a ball shape, the auxiliary reset rod is conveniently installed to be matched with the fixing clamp, multi-angle rotation can be realized, and therefore reset of the fracture part is realized.

Preferably: the telescopic link include first external screw thread pole, the outer threaded rod of second and internal thread pole, first external screw thread pole is the same with the outer threaded rod of second, all has the round bar of external screw thread for one end, internal thread pole round bar inside have with first external screw thread pole and the outer threaded rod complex internal thread of second. The left end and the right end of the first external threaded rod and the second external threaded rod are screwed into the internal threaded rod respectively, the length of the telescopic rod can be increased or shortened by rotating the internal threaded rod, and the position of the two resetting fixtures is changed, so that the traction of the fracture is realized.

The invention has the following beneficial effects:

1. the design of the telescopic rod enables the single-side external fixing frame to have a traction function.

2. The reduction ball can meet the operation reduction in all directions, namely, the reduction of the fracture displacement in all forms under physiological state is completed.

3. The process of traction, resetting and final fixing can be completed simultaneously.

4. On the basis of the traction function, the operation of the reset ball is simple, the repeated violent traction and reset process in the traditional external fixing frame operation caused by insufficient experience of young operation doctors is avoided, and the operation injury and the operation time are reduced.

5. Compared with the annular external fixation, the needle channel is less, the nursing is easy, and the carrying is convenient. Simple structure and low manufacturing cost.

6. The design is that the first external fixation system applying the reset ball structure to the orthopedic external fixation frame structure has innovation significance for the development of the orthopedic external fixation frame system.

Drawings

FIG. 1 is a view showing a state in which an external fixator for fracture of limbs is used;

FIG. 2 is a perspective view of the reduction fixture;

FIG. 3 is a schematic view of the mounting position of the reset ball portion;

FIG. 4 is a side view of the retaining clip;

FIG. 5 is a structural view of the telescoping pole;

wherein: 1-reduction fixator, 2-spicule, 3-telescopic rod, 4-reduction ball, 5-fixation clamp, 6-spicule fixation rod, 7-curved rod support, 8-auxiliary reduction rod, 9-jackscrew, 10-first screw, 11-second screw, 12-third screw, 13-fourth screw, 3-1-first external screw rod, 3-2-second external screw rod, 3-3-internal screw rod, 4-1-installation hole, 4-2-threaded hole, 5-1-convex connection part, 5-2-square hole, 5-3-cylinder, 6-1-fixation hole and 6-2-locking hole.

Detailed Description