CN219557416U - Sternum retractor - Google Patents

Abstract

The utility model discloses a sternum retractor. A sternal retractor comprising: the first slider is installed at the lower end of the first guide rail and slides along the first guide rail, a first screw is arranged at the upper end of the first slider, an extension plate and a hook are arranged on one side of the first slider, and the hook is hinged with the first slider. According to the sternum retractor provided by the utility model, the mounting depth of the second screw on the extension plate can be adjusted according to actual operation requirements, and the maximum rotation angle of the hook can be controlled, so that the staggered distance of the sternum on two sides can be controlled.

Description

Sternum retractor

Technical Field

The utility model relates to the technical field of surgical operations, in particular to a sternum retractor.

Background

The sternum refers to flat bones attached to the anterior median rib of the chest of a person by a chest rib joint, the structures behind the sternum are numerous, firstly, the sternum angle is divided into an upper mediastinum and a lower mediastinum, and the thymus, the main pulmonary artery, the trachea, the esophagus and the spinal column are arranged in the upper mediastinum from front to back; the lower mediastinum is divided into anterior, middle and posterior mediastinum by pericardium, there may be thymus, enlarged thyroid gland and enlarged lymph node in anterior mediastinum, middle mediastinum is heart, and posterior mediastinum is spine.

Important organs of a human body such as a lung and a heart are positioned below a sternum, the sternum supports and protects the important organs, the lung and the heart are prevented from being damaged by external impact, when the heart is subjected to pathological changes for operation, the sternum is often required to be opened, then the exposed heart is subjected to operation, and the sternum is opened to commonly use a sternum tractor, but for special heart operations such as heart bypass operation, larger operation and observation space are required, the sternum is required to be pulled upwards by a certain angle, and then an operation space is provided for medical staff.

Accordingly, there is a need to provide a sternal retractor that solves the above-described problems.

Disclosure of Invention

In view of the above, the present utility model provides a sternal retractor capable of dislocating and pulling the sternum in order to overcome the drawbacks of the prior art.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the sternum retractor comprises a traction mechanism and a supporting mechanism, wherein the traction mechanism is arranged at the upper end of the supporting mechanism and comprises a first guide rail and a first sliding block, the first sliding block is arranged at the lower end of the first guide rail and slides along the first guide rail, a first screw is arranged at the upper end of the first sliding block, an extension plate and a hook are arranged on one side of the first sliding block, and the hook is hinged with the first sliding block.

Preferably, a second screw is arranged at the upper end of the extension plate.

Preferably, the supporting mechanism comprises a second guide rail, a second sliding block is arranged at the lower end of the second guide rail and slides along the second guide rail, a sliding rail is arranged on one side of the second guide rail, and a plug is fixedly arranged at one end of the second guide rail.

Preferably, the sliding rail is provided with a moving block, the moving block is provided with a threaded rod, one end of the threaded rod is provided with a fixed block, and the threaded rod is connected with the fixed block through a bearing.

Preferably, a hand wheel is arranged at the other end of the threaded rod.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the utility model, the first sliding block is hinged with the hook, so that the hook hung on the sternum can pull one end of the sternum to the vertical direction in the process of pulling the sternum to two sides, thereby realizing the effect of staggering the sternum on two sides;

(2) According to the utility model, the moving block is driven to move through the interaction of the threads on the threaded rod and the moving block, so that power is provided for the movement of the hook, compared with the existing gear type moving mode, the thread rotating process is continuous and linear, the moving process of the hook is controlled to be more gentle, the blocking feeling caused by the driving of the gear is avoided, and the influence of vibration generated by mechanical traction on the body of a patient is reduced;

(3) According to the utility model, after the moving block is controlled to move through the threaded rod, no additional braking device or braking operation is needed, and after the hand wheel is stopped to rotate, the moving block cannot be obviously displaced under the blocking effect of the threads on the surface of the threaded rod, so that the additional operation of medical staff is reduced.

Drawings

FIG. 1 is a schematic view of the construction of a sternal retractor provided by the utility model;

FIG. 2 is a schematic view of a first view of a traction mechanism of a sternum retractor according to the utility model;

FIG. 3 is a schematic view of a second view of the traction mechanism of the sternum retractor of the present utility model;

FIG. 4 is a schematic view of the structure of the sternal retractor support mechanism provided by the present utility model;

fig. 5 is an enlarged view at a in fig. 4.

Wherein, the names corresponding to the reference numerals are: 100. a pulling mechanism; 101. a first guide rail; 102. a first slider; 103. a first screw; 104. an extension plate; 105. a hook; 106. a second screw; 200. a support mechanism; 201. a second guide rail; 202. a second slider; 203. a slide rail; 204. a moving block; 205. a threaded rod; 206. a fixed block; 207. a bearing; 208. a hand wheel; 209. and (5) plugging.

Detailed Description

The utility model will be further illustrated by the following description and examples, which include but are not limited to the following examples.

As shown in fig. 1-5, a sternal retractor is provided according to the utility model, comprising: the traction mechanism 100 and the support mechanism 200, wherein the traction mechanism 100 is installed at the upper end of the support mechanism 200, the traction mechanism 100 is used for being fixed on the sternum and pulling the sternum to the outside, and the support mechanism 200 is used for providing power for the traction mechanism 100 to move and adjusting.

First embodiment:

as shown in fig. 1 to 3, the pulling mechanism 100 comprises a first guide rail 101 and a first slider 102, the first slider 102 is mounted at the lower end of the first guide rail 101 and slides along the first guide rail 101, a first screw 103 is arranged at the upper end of the first slider 102, an extension plate 104 and a hook 105 are arranged at one side of the first slider 102, the hook 105 is hinged with the first slider 102, a second screw 106 is arranged at the upper end of the extension plate 104, when in use, the pulling mechanism 100 and the hook 105 on the supporting mechanism 200 are firstly hung on two sternum sides of a patient, the positions of the hook 105 on the first guide rail 101 and the second guide rail 201 are adjusted according to actual working requirements, the first screw 103 is loosened, the first slider 102 and the second slider 202 can slide along the first guide rail 101 and the second guide rail 201 under the action of external force, after the first slider 102 and the second slider 202 move to the proper positions, the first screw 103 is rotated, and then the first slider 102 and the second slider 202 are fixed, the first slider 102 is higher than the second slider 202, so that the bottoms of the first slider 102 and the second slider 202 are kept on the same horizontal plane, then the hand wheel 208 is rotated, the hook 105 moves to two sides under the action of the supporting mechanism 200, the sternum is pulled to be opened, and as the hook 105 is hinged on the first slider 102, the hook 105 on the first slider 102 rotates around the hinge point in the pulling process, and the sternum hung on the hook 105 is driven to be staggered with the sternum on the other side by a certain distance.

By hinging the first sliding block 102 and the hook 105, the hook 105 hung on the sternum can also pull one end of the sternum to the vertical direction in the process of pulling the sternum to two sides, so that the effect of staggering the sternum at two sides is realized, in addition, according to the actual operation requirement, the depth of the second screw 106 mounted on the extension plate 104 is adjusted, the maximum rotation angle of the hook 105 can be controlled, and the distance of staggering the sternum at two sides is further controlled.

Second embodiment:

as shown in fig. 4-5, the supporting mechanism 200 includes a second guide rail 201, a second slider 202 is disposed at the lower end of the second guide rail 201, the second slider 202 slides along the second guide rail 201, a slide rail 203 is disposed on one side of the second guide rail 201, a plug 209 is fixedly disposed at one end of the second guide rail 201, a moving block 204 is mounted on the slide rail 203, a threaded rod 205 is disposed on the moving block 204, a fixed block 206 is disposed at one end of the threaded rod 205, the threaded rod 205 is connected with the fixed block 206 through a bearing 207, when in use, the hook 105 is hung on a sternum, two handwheels 208 are rotated, the handwheels 208 rotate to drive the threaded rod 205 to rotate, through holes with matched threads are formed in the inner wall and the threaded rod 205 on the moving block 204, and then the moving block 204 is driven to move along the slide rail 203, and the plug 209 can limit the travel of the moving block 204 in order to prevent the moving block 204 from sliding too large moving distance and sliding from the slide rail 203.

Through the interaction of screw thread on threaded rod 205 and movable block 204, drive movable block 204 and remove, and then provide power for the removal of couple 105, compare with current gear formula moving means, screw thread pivoted process makes continuous linearity, and the moving process of control couple 105 is gentler, can not appear the card of gear drive and feel, reduces the vibrations that mechanical traction produced to patient's health's influence.

Third embodiment:

as shown in fig. 4, the other end of the threaded rod 205 is provided with a hand wheel 208, when in use, the left hand and the right hand of a worker rotate the two hand wheels 208 simultaneously, and the angle of one rotation is the same, so that the displacement of the first sliding block 102 and the displacement of the second sliding block 202 are the same.

After the moving block 204 is controlled to move through the threaded rod 205, no additional braking device or braking operation is needed, after the hand wheel 208 stops rotating, the moving block 204 cannot obviously displace under the blocking effect of the threads on the surface of the threaded rod 205, and the additional operation of medical staff is reduced. The above embodiment is only one of the preferred embodiments of the present utility model, and should not be used to limit the scope of the present utility model, but all the insubstantial modifications or color changes made in the main design concept and spirit of the present utility model are still consistent with the present utility model, and all the technical problems to be solved are included in the scope of the present utility model.

Claims (5)

1. A sternal retractor comprising: the traction mechanism comprises a traction mechanism (100) and a supporting mechanism (200), wherein the traction mechanism (100) is arranged at the upper end of the supporting mechanism (200), the traction mechanism (100) comprises a first guide rail (101) and a first sliding block (102), the first sliding block (102) is arranged at the lower end of the first guide rail (101) and slides along the first guide rail (101), a first screw (103) is arranged at the upper end of the first sliding block (102), an extension plate (104) and a hook (105) are arranged on one side of the first sliding block (102), and the hook (105) is hinged with the first sliding block (102).

2. A sternal retractor according to claim 1, wherein the extension plate (104) is provided with a second screw (106) at its upper end.

3. The sternum retractor according to claim 1, wherein the supporting mechanism (200) comprises a second guide rail (201), a second slider (202) is arranged at the lower end of the second guide rail (201), the second slider (202) slides along the second guide rail (201), a sliding rail (203) is arranged at one side of the second guide rail (201), and a plug (209) is fixedly arranged at one end of the second guide rail (201).

4. A sternal retractor according to claim 3, wherein the sliding rail (203) is provided with a moving block (204), the moving block (204) is provided with a threaded rod (205), one end of the threaded rod (205) is provided with a fixed block (206), and the threaded rod (205) is connected with the fixed block (206) through a bearing (207).

5. A sternal retractor according to claim 4, wherein the threaded rod (205) is provided with a hand wheel (208) at the other end.