CN213787565U

CN213787565U - Sternum retractor

Info

Publication number: CN213787565U
Application number: CN202021651896.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Zhang Ye
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-07-27
Anticipated expiration: 2030-08-10

Abstract

The utility model relates to the technical field of medical equipment, concretely relates to sternum retractor. The upper portion of a fixed base of the tractor is provided with an adjusting sleeve box, an adjusting column is connected in the adjusting sleeve box through an adjusting mechanism, two adjusting columns are fixedly connected with a traction box together, a driving shaft is arranged in the traction box, two ends of the driving shaft are connected with the inner wall of the traction box through bearings, a first thread area and a second thread area are arranged on the driving shaft, a screw block is connected with the first thread area and the second thread area through threads, and the threads of the first thread area and the second thread area are opposite. This device changes the hand through manual rotation, drives then and takes off the hand and remove dorsad to draw the breastbone and draw out, compare traction motor, artifical steerable taking off hand moving range that rotates better, draw out the breastbone according to actual conditions, the practicality is stronger.

Description

Sternum retractor

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to sternum retractor.

Background

In the aspect of cardiothoracic surgery, some patients need to cut skin, subcutaneous tissues and muscle layers and enter the thoracic cavity through a narrow intercostal space for surgery, so that the narrow intercostal space needs to be expanded by using a tool in the process of surgery to provide enough operation space for the surgery; the tool is typically a sternal retractor.

The existing sternum retractor is driven by a traction motor, the movement range of a raker is not well controlled by the drive of the traction motor, the raker is easy to excessively rake the sternum, the muscle tissues and blood vessels in a patient are injured, and the pain of the patient is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that current sternum retractor adopts traction motor's mode drive, and the bad control of traction motor drive is taken off hand moving range, leads to easily taking off the hand and excessively taking off the sternum, causes the injury to the inside musculature of patient and blood vessel, increases patient's misery.

In order to solve the problem, the utility model provides a sternum retractor changes the hand through manual rotation, drives then and takes off the hand and remove dorsad to draw the sternum out, compare traction motor, the better steerable hand removal scope of taking off of artifical rotation is drawn out to the sternum according to actual conditions, and the practicality is stronger.

In order to achieve the above object, the utility model provides a following technical scheme: a sternum retractor comprises a fixed base, wherein an adjusting sleeve box is arranged at the upper part of the fixed base, adjusting columns are connected in the adjusting sleeve box through an adjusting mechanism, the two adjusting columns are fixedly connected with a retractor box together, a driving shaft is arranged in the retractor box, two ends of the driving shaft are connected with the inner wall of the retractor box through bearings, a first threaded area and a second threaded area are arranged on the driving shaft, the first threaded area and the second threaded area are in threaded connection with a screw block, and the threads of the first threaded area and the second threaded area are opposite;

the bottom of the wire block is provided with a limiting through rod which penetrates through a limiting through groove arranged at the bottom of the retractor box, the driving shaft is connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the second bevel gear is connected with a retraction rotating shaft, and the retraction rotating shaft penetrates through the retractor box and is connected with a rotating hand; the bottom of the wire block is connected with a movable sleeve block, and the two movable sleeve blocks are respectively detachably connected with a puller through a disassembling block.

Preferably, a lifting handle is arranged at the top of the retractor box.

Preferably, adjustment mechanism includes the axis of rotation, and the axis of rotation bottom is connected the setting through the bearing frame rotation with the bottom wall in the regulation cover box, and axis of rotation top threaded connection has the thread bush, and the thread bush top is connected with the regulation post, and the axis of rotation bottom is connected with driven bevel gear, and driven bevel gear has the initiative bevel gear, and the initiative bevel gear is connected with the regulation moving axis, and the regulation moving axis passes the regulation cover box and is connected with the handle.

Preferably, the adjusting sleeve box is provided with a limiting groove on the inner side wall, a limiting rod is arranged in the limiting groove in a sliding mode, and the limiting rod is connected with the threaded sleeve.

Preferably, the limiting through groove is arranged in the range of the first thread area and the second thread area.

Preferably, a fixed stabilizing column is installed between the two adjusting columns, and the movable sleeve block is arranged on the fixed stabilizing column in a sliding mode.

Preferably, remove a set of piece upper portion and be equipped with the spacing groove, dismantle the spacing setting in spacing groove in piece upper portion, dismantle a piece both sides and be equipped with the symmetry and be equipped with the draw-in groove, remove a set of piece lateral part symmetry and be equipped with the installation pole, two installation poles are connected with the mounting panel jointly, and the mounting panel pull is equipped with the kelly, and kelly one end is passed and is removed the set of piece and draw-in groove joint setting, and the other end is connected with the handrail, the cover is equipped with reset spring on the kelly, and reset spring one end is connected with the mounting panel, and the other end is connected with the removal set of piece.

The utility model has the advantages as follows:

1) the utility model discloses place the device on the operating table through unable adjustment base, erect in patient both sides through the control column, will take off the hand and put into the breastbone, a hand can be pressed and pull out the case, can play the firm effect to the device like this, avoid the device to shift at the during operation to better drawing off the breastbone, the other hand rotates and changes the hand, then drives and takes off the hand dorsad and remove, thereby draws off the breastbone, compares traction motor, artifical steerable hand moving range of taking off that rotates better, draws off the hand moving range to the breastbone according to actual conditions, the practicality is stronger.

2) When the pickpocket is disassembled, the clamping rod is pulled through the handrail, the reset spring is compressed, then the clamping rod is separated from the clamping groove, then the disassembling block is separated from the limiting groove, the disassembly of the pickpocket is completed, the maintenance and the replacement are convenient, the pickpocket is damaged without replacing the whole device, the use cost is reduced, the clamping rod and the clamping groove are matched and fixed, the fixing practicability of the bolt and the screw is high, the screw is disassembled and assembled for many times, and the size of the screw is easy to change, so that the stability of the assembly is influenced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the pulling box of the present invention;

FIG. 3 is a schematic structural diagram of the adjusting mechanism of the present invention;

fig. 4 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-2, in an embodiment of the present invention, a sternum retractor comprises a fixing base 1, an adjusting sleeve 2 is disposed on an upper portion of the fixing base 1, the adjusting sleeve 2 is connected with adjusting columns 4 through an adjusting mechanism 3, the two adjusting columns 4 are fixedly connected with a distraction box 5 together, a driving shaft 6 is disposed inside the distraction box 5, two ends of the driving shaft 6 are connected with an inner wall of the distraction box 5 through a bearing 7, the driving shaft 6 is provided with a first threaded area 8 and a second threaded area 9, the first threaded area 8 and the second threaded area 9 are in threaded connection with a screw block 10, and threads of the first threaded area 8 and the second threaded area 9 are opposite;

the bottom of the wire block 10 is provided with a limiting through rod 11, the limiting through rod 11 passes through a limiting through groove 12 arranged at the bottom of the retracting box 5, the driving shaft 6 is connected with a first bevel gear 13, the first bevel gear 13 is meshed with a second bevel gear 14, the second bevel gear 14 is connected with a retracting rotating shaft 15, and the retracting rotating shaft 15 passes through the retracting box 5 and is connected with a rotating hand 16; the bottom of the silk block 10 is connected with a movable sleeve block 17, and the two movable sleeve blocks 17 are respectively detachably connected with a raker 19 through a disassembling block 18.

The device is placed on an operating table through a fixed base 1, the device is erected on two sides of a patient through an adjusting column 4, a raker 19 is placed in a sternum, one hand can press a traction box 5, so that the device can be stabilized, the device is prevented from shifting during operation, the sternum is better retracted, the other hand rotates a rotating hand 16, a traction rotating shaft 15 rotates, a second bevel gear 14 rotates, a first bevel gear 13 is meshed with the second bevel gear 14, the first bevel gear 13 rotates to drive a driving shaft 6 to rotate, a first thread area 8 and a second thread area 9 are in threaded connection with a screw block 10, the threads of the first thread area 8 and the second thread area 9 are opposite, a limiting through rod 11 is driven to move backwards, and the raker 19 is driven to move backwards, so that the sternum is retracted; the wire block 10 can be limited through the limiting through groove 12 and the limiting through rod 11, so that the movement stability of the wire block 10 is improved;

the top of the retractor box 5 of this embodiment is provided with a handle 20, which facilitates the lifting and carrying of the device and improves the practicability of the device.

As shown in fig. 3, the adjusting mechanism 3 of the present embodiment includes a rotating shaft 31, a bottom end of the rotating shaft 31 is rotatably connected to an inner bottom wall of the adjusting sleeve 2 through a bearing seat 32, a threaded sleeve 33 is threadedly connected to a top of the rotating shaft 31, a top end of the threaded sleeve 33 is connected to the adjusting column 4, a driven bevel gear 35 is connected to a bottom of the rotating shaft 31, the driven bevel gear 35 is engaged with a driving bevel gear 36, the driving bevel gear 36 is connected to an adjusting shaft 37, and the adjusting shaft 37 passes through the adjusting sleeve 2 and is connected to the handle 34.

The adjusting sleeve box 2 of this embodiment has a limiting groove 38 on its inside wall, a limiting rod 39 is slidably disposed in the limiting groove 38, and the limiting rod 39 is connected with the threaded sleeve 33.

Through rotating the handle 34, adjust the moving axis 37 and rotate, drive the rotation of drive bevel gear 36, driven bevel gear 35 has the drive bevel gear 36 of meshing, driven bevel gear 35 rotates, drive axis of rotation 31 and rotate, the stability that axis of rotation 31 pivoted can be improved through bearing frame 32, threaded connection has threaded bush 33 at the top of axis of rotation 31, then drive threaded bush 33 and remove, through spacing groove 38, gag lever post 39 can improve the stability that threaded bush 33 removed, also avoid threaded bush 33 to break away from threaded bush 33 simultaneously, can realize through handle 34 positive and negative rotation that the regulation post 4 goes up and down, thereby adjust according to taking off 19 and breastbone position, thereby can adjust in a flexible way, the efficiency of retracting has been improved.

The limiting through groove 12 of the present embodiment is disposed in the area range of the first threaded area 8 and the second threaded area 9, so as to prevent the screw block 10 from being separated from the first threaded area 8 and the second threaded area 9.

A fixed stabilizing post 21 is arranged between the two adjusting posts 4 of the embodiment, and the movable sleeve block 17 is arranged on the fixed stabilizing post 21 in a sliding way; the moving stability of the pickpocket 19 can be improved by the matching arrangement of the moving sleeve block 17 and the fixed stabilizing column 21.

As shown in fig. 4, the upper portion of the movable sleeve block 17 of the present embodiment is provided with a limiting groove 22, the upper portion of the detachable block 18 is limited in the limiting groove 22, the two sides of the detachable block 18 are provided with clamping grooves 23, the lateral portion of the movable sleeve block 17 is symmetrically provided with mounting rods 24, the two mounting rods 24 are connected with a mounting plate 25 together, the mounting plate 25 is pulled and provided with a clamping rod 26, one end of the clamping rod 26 passes through the movable sleeve block 17 and is clamped with the clamping groove 27, the other end of the clamping rod is connected with a handrail 28, the clamping rod 26 is sleeved with a return spring 29, one end of the return spring 29 is connected with the mounting plate 25, and the other end of the return spring is connected with the movable sleeve block 17.

Insert spacing groove 22 to dismantle piece 18, pass through removal sleeve block 17 and draw-in groove 27 joint through kelly 26 one end, thereby it is fixed to dismantle piece 18, then realize the fixed mounting of raking hands 19, stimulate kelly 26 through handrail 28 during the dismantlement, reset spring 29 compresses, then realize kelly 26 and break away from draw-in groove 27, then dismantle piece 18 and break away from spacing groove 22, accomplish the dismantlement of raking hands 19, convenient maintenance, change, raking hands 19 damages and need not whole device change, use cost is reduced, adopt kelly 26 simultaneously, draw-in groove 27 cooperation is fixed, compare the bolt, the fixed practicality of screw is high, because the bolt, the screw is dismantled many times, the installation, the screw size is changed easily, thereby influence the steadiness of installation.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A sternum retractor comprises a fixed base and is characterized in that: an adjusting sleeve box is arranged at the upper part of the fixed base, adjusting columns are connected in the adjusting sleeve box through an adjusting mechanism, the two adjusting columns are fixedly connected with a retractor box together, a driving shaft is arranged in the retractor box, two ends of the driving shaft are connected with the inner wall of the retractor box through bearings, a first thread area and a second thread area are arranged on the driving shaft, the first thread area and the second thread area are in threaded connection with a screw block, and threads of the first thread area and the second thread area are opposite;

2. A sternal retractor according to claim 1, wherein: the top of the retraction box is provided with a lifting handle.

3. A sternal retractor according to claim 1, wherein: the adjusting mechanism comprises a rotating shaft, the bottom end of the rotating shaft is rotatably connected with the inner bottom wall of the adjusting sleeve box through a bearing seat, the top of the rotating shaft is in threaded connection with a threaded sleeve, the top end of the threaded sleeve is connected with the adjusting column, the bottom of the rotating shaft is connected with a driven bevel gear, the driven bevel gear is meshed with a driving bevel gear, the driving bevel gear is connected with an adjusting moving shaft, and the adjusting moving shaft penetrates through the adjusting sleeve box and is connected with the handle.

4. A sternal retractor according to claim 3, wherein: the adjusting sleeve box is characterized in that a limiting groove is formed in the inner side wall of the adjusting sleeve box, a limiting rod is arranged in the limiting groove in a sliding mode, and the limiting rod is connected with the threaded sleeve.

5. A sternal retractor according to claim 1, wherein: the limiting through groove is arranged in the area range of the first thread area and the second thread area.

6. A sternal retractor according to claim 1, wherein: and a fixed stable column is arranged between the two adjusting columns, and the movable sleeve block is arranged on the fixed stable column in a sliding manner.

7. A sternal retractor according to claim 1, wherein: remove a set of upper portion and be equipped with the spacing groove, dismantle the spacing setting in spacing groove in a set of upper portion, dismantle a bilateral symmetry and be equipped with the draw-in groove, remove a set of lateral part symmetry and be equipped with the installation pole, two installation poles are connected with the mounting panel jointly, and the mounting panel pull is equipped with the kelly, and kelly one end is passed and is removed a set of and draw-in groove joint setting, and the other end is connected with the handrail, the cover is equipped with reset spring on the kelly, and reset spring one end is connected with the mounting panel, and the other end is connected with removal cover.