CN213189803U

CN213189803U - Thoracic surgery retractor

Info

Publication number: CN213189803U
Application number: CN201922342651.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Tian Baona
Current assignee: Tian Baona
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2021-05-14
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a thoracic surgery retractor, include: the device comprises a base, a first traction plate, a rectangular through hole, a limiting rack, a movable mechanism and a fine adjustment mechanism; the first traction plate is arranged on the left side of the bottom end of the base along the vertical direction; the rectangular through hole is formed in the front end of the right side of the base in the left-right direction, and the rear side of an inner cavity of the rectangular through hole is communicated with the rear side of the base; the limiting rack is arranged at the bottom end of the rectangular through hole along the left and right directions; the movable mechanism is sleeved on the outer wall of the base; the fine adjustment mechanism is installed on the left side of the bottom end of the movable mechanism along the left-right direction. This thoracic surgery retractor can improve the removal precision of leading out the board to can carry out the accurate adjustment of minizone to two and lead out the board interval, in order to realize the accurate fixed to patient's sternum position, avoid medical personnel frequent adjustment, the practicality is strong.

Description

Thoracic surgery retractor

Technical Field

The utility model relates to the technical field of thoracic surgery, in particular to a thoracic surgery retractor.

Background

In cardiac surgery for thoracic surgery, in order to facilitate the medical staff to see more fully inside the patient's chest, the sternum is usually distracted by means of a retractor, forcing the sternum halves to recede to either side together with the adjacent ribs, thus enlarging the medical staff's therapeutic field of vision;

in the prior art, the existing sternum retractor of the existing retractor in the market at present generally comprises a handle, a rack, a rotating wheel, a movable arm and a retractor plate, but the structure enables the retractor to move by adopting the rack and the gear in the use process, so that the movement precision of the retractor plate is poor, the fine adjustment of the distance between the retractor plates cannot be realized, medical staff needs to adjust the distance between the retractor plates for many times in use, and the operation is troublesome.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thoracic surgery retractor to it is relatively poor to solve the removal precision of the board of leading in the prior art at least, can't carry out the fine adjustment to leading out the board interval, and medical personnel need adjust leading out the board interval many times, operate more troublesome problem.

In order to achieve the above object, the utility model provides a following technical scheme: a thoracic surgical retractor, comprising:

a base;

the first traction plate is arranged on the left side of the bottom end of the base along the vertical direction;

the rectangular through hole is formed in the front end of the right side of the base in the left-right direction, and the rear side of an inner cavity of the rectangular through hole is communicated with the rear side of the base;

the limiting rack is arranged at the bottom end of the rectangular through hole along the left and right directions;

the movable mechanism is sleeved on the outer wall of the base;

fine-tuning, install along left right direction moving mechanism's bottom left side, fine-tuning includes: the device comprises a shell, a rotating shaft rod, a cylindrical block, a spiral chute, a limiting chute, a second traction plate and an insertion block; the shell is arranged on the left side of the bottom end of the shell along the left-right direction, and the front end of the right side of the shell is provided with a locking mechanism; the rotating shaft rod is rotatably connected to the right center of the shell through a bearing along the left-right direction, an inner ring of the bearing is in interference fit with the outer wall of the rotating shaft rod, and an outer ring of the bearing is fixedly connected with the inner wall of the shell; the cylindrical block is arranged on the left side of the rotating shaft rod along the left-right direction; the spiral sliding chutes are sequentially arranged on the outer wall of the cylindrical block along the left and right directions; the limiting sliding groove is formed in the bottom end of the inner cavity of the shell in the left-right direction, and the bottom end of the inner cavity of the limiting sliding groove is communicated with the lower surface of the shell; the second traction plate is inserted into the inner cavity of the limiting sliding groove along the up-down direction, and the lower surface of the second traction plate extends out of the inner cavity of the limiting sliding groove; the insertion block is arranged at the top end of the second traction plate, and the top end of the insertion block is inserted into the inner cavity of the spiral sliding groove in a matched mode.

Preferably, the movable mechanism includes: the device comprises a shell, a rotating shaft, a gear and a first screw rod; the outer shell is sleeved on the outer wall of the base; the number of the rotating shafts is two, the two rotating shafts are respectively connected to the left side and the right side of the inner cavity of the shell in a rotating mode through bearings in the front-back direction, the inner ring of each bearing is in interference fit with the outer wall of each rotating shaft, and the outer ring of each bearing is fixedly connected with the inner wall of the shell; the number of the gears is two, the two gears are respectively in keyed connection with the outer walls of the left rotating shaft and the right rotating shaft, and the left gear and the right gear are both meshed with the limiting racks; the first screw rod is connected to the top end of the shell in a threaded mode in the vertical direction, the bottom end of the first screw rod extends into the inner cavity of the shell, and the bottom end of the first screw rod is provided with a locking mechanism.

Preferably, the locking mechanism includes: a braking rack and a limiting spring; the brake rack is rotatably connected to the bottom end of the outer wall of the first screw rod through a bearing, an inner ring of the bearing is in interference fit with the outer wall of the first screw rod, an outer ring of the bearing is fixedly connected with the inner wall of the brake rack, and the brake rack can be meshed with the limit rack; the number of the limiting springs is two, and the upper ends and the lower ends of the two limiting springs are fixedly connected with the left side and the right side of the upper surface of the brake rack and the left side and the right side of the top end of the inner cavity of the shell respectively.

Preferably, the locking mechanism comprises: the second screw rod, the brake plate and the telescopic spring; the second screw rod is screwed at the right end of the front side of the shell along the front-back direction, and the back side of the second screw rod extends into the inner cavity of the shell; the brake plate is rotatably connected to the rear side of the outer wall of the second screw rod through a bearing, an inner ring of the bearing is in interference fit with the outer wall of the second screw rod, the inner ring of the bearing is fixedly connected with the outer wall of the brake plate, and the inner wall of the brake plate is in contact with the outer wall of the rotating shaft rod; the telescopic spring is sleeved on the rear side of the outer wall of the second screw rod along the front-back direction, and the front end and the rear end of the telescopic spring are fixedly connected with the inner wall of the shell and the front side of the brake plate respectively.

Compared with the prior art, the beneficial effects of the utility model are that: the thoracic surgery retractor drives the brake rack to move upwards to be disengaged from the limit rack by screwing the first screw rod upwards, so as to remove the fixation of the shell, drives the brake rack to move upwards to be disengaged from the limit rack by moving the shell towards the right side, drives the second retractor plate to move towards the right side along the outer wall of the base and drives the second retractor plate to move to a position close to the sternum at the other side of a patient by moving the shell towards the right side and meshing and rotating the gear along the tooth grooves of the limit rack so as to limit the shell, drives the brake plate to move towards the front side to be disengaged from the outer wall of the rotating shaft rod so as to remove the fixation by screwing the rotating shaft rod so as to drive the cylindrical block to rotate, drives the insertion block to move towards the left side and the right side under the rotating force of the spiral chute so as to drive the second retractor plate to accurately move to the sternum at the other side of the patient in a small range for fixation, so, thereby improving the moving precision of the retractor plates, and accurately adjusting the distance between the two retractor plates in a small range to realize the accurate fixation of the position of the sternum of the patient, avoiding the frequent adjustment of medical staff and having strong practicability.

Drawings

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

FIG. 2 is an exploded view of the movable mechanism of the present invention;

fig. 3 is an exploded view of the fine adjustment mechanism of the present invention.

In the figure: 1. the brake device comprises a base, 2, a first retracting plate, 3, a rectangular through hole, 4, a limiting rack, 5, a movable mechanism, 51, a shell, 52, a rotating shaft, 53, a gear, 54, a first screw rod, 55, a brake rack, 56, a limiting spring, 6, a fine adjustment mechanism, 61, a shell, 62, a rotating shaft rod, 63, a cylindrical block, 64, a spiral chute, 65, a limiting chute, 66, a second retracting plate, 67, an inserting block, 68, a second screw rod, 69, a brake plate, 610 and a telescopic spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a thoracic surgical retractor, comprising: the device comprises a base 1, a first traction plate 2, a rectangular through hole 3, a limiting rack 4, a movable mechanism 5 and a fine adjustment mechanism 6; the first traction plate 2 is installed on the left side of the bottom end of the base 1 in the up-down direction, the first traction plate 2 is made of hard materials according with human engineering, and the specific use type can be purchased, installed and used from the market according to needs; the rectangular through hole 3 is formed in the front end of the right side of the base 1 in the left-right direction, and the rear side of the inner cavity of the rectangular through hole 3 is communicated with the rear side of the base 1; the limiting rack 4 is arranged at the bottom end of the rectangular through hole 3 along the left and right directions; the movable mechanism 5 is sleeved on the outer wall of the base 1; fine-tuning 6 installs in the bottom left side of moving mechanism 5 along left right direction, and fine-tuning 6 includes: the device comprises a shell 61, a rotating shaft rod 62, a cylindrical block 63, a spiral chute 64, a limiting chute 65, a second traction plate 66 and an insertion block 67; the shell 61 is installed at the left side of the bottom end of the shell 51 along the left-right direction, and the front end of the right side of the shell 61 is provided with a locking mechanism; the rotating shaft rod 62 is rotatably connected to the right center position of the shell 61 through a bearing along the left-right direction, an inner ring of the bearing is in interference fit with the outer wall of the rotating shaft rod 62, and an outer ring of the bearing is fixedly connected with the inner wall of the shell 61; the cylindrical block 63 is provided on the left side of the spindle shaft 62 in the left-right direction; the spiral sliding chutes 64 are sequentially arranged on the outer wall of the cylindrical block 63 along the left and right directions; the limiting sliding groove 65 is formed in the bottom end of the inner cavity of the shell 61 in the left-right direction, the bottom end of the inner cavity of the limiting sliding groove 65 is communicated with the lower surface of the shell 61, and the limiting sliding groove 65 limits the second traction plate 66; the second retracting plate 66 is inserted into the inner cavity of the limiting sliding groove 65 along the up-down direction, the lower surface of the second retracting plate 66 extends out of the inner cavity of the limiting sliding groove 65, the second retracting plate 66 is made of rigid materials which accord with human engineering, and the specific usage model can be purchased, installed and used from the market according to needs; the insertion block 67 is arranged at the top end of the second traction plate 66, the top end of the insertion block 67 is inserted into the inner cavity of the spiral chute 64 in a matching manner, medical personnel can rotate the rotating shaft rod 62 clockwise or anticlockwise to drive the cylindrical block 63 to rotate, and the insertion block 67 moves leftwards or rightwards under the rotating force of the spiral chute 64.

Preferably, the movable mechanism 5 further includes: a housing 51, a rotating shaft 52, a gear 53 and a first screw 54; the outer shell 51 is sleeved on the outer wall of the base 1; the number of the rotating shafts 52 is two, the two rotating shafts 52 are respectively connected to the left side and the right side of the inner cavity of the shell 51 in a rotating mode through bearings along the front-back direction, the inner rings of the bearings are in interference fit with the outer walls of the rotating shafts 52, and the outer rings of the bearings are fixedly connected with the inner wall of the shell 51; the number of the gears 53 is two, the two gears 53 are respectively connected to the outer walls of the left rotating shaft 52 and the right rotating shaft 52 in a key mode, the left gear 53 and the right gear 53 are both meshed with the limiting rack 4, and the gears 53 can rotate along the tooth grooves of the limiting rack 4 in a meshed mode to limit the shell 51; the first screw rod 54 is screwed on the top end of the shell 51 along the up-down direction, the bottom end of the first screw rod 54 extends into the inner cavity of the shell 51, and the bottom end of the first screw rod 54 is provided with a locking mechanism.

Preferably, the locking mechanism further includes: a brake rack 55 and a limit spring 56; the brake rack 55 is rotatably connected to the bottom end of the outer wall of the first screw 54 through a bearing, the inner ring of the bearing is in interference fit with the outer wall of the first screw 54, the outer ring of the bearing is fixedly connected with the inner wall of the brake rack 55, and the brake rack 55 can be meshed with the limit rack 4 to fix the shell 51; the quantity of limit spring 56 is two, two limit spring 56's upper and lower both ends respectively with the upper surface left and right sides of brake rack 55 and the inner chamber top left and right sides fixed connection of shell 51, limit spring 56 is compression spring, and the elastic coefficient is 16N/CM, and limit spring 56 receives tensile or produces elastic deformation after the extrusion, resumes to initial condition after getting rid of external force, and limit spring 56 plays brake rack 55 limiting displacement, prevents that it from following first screw 54 and rotating.

Preferably, the locking mechanism further comprises: a second screw 68, a brake plate 69, and a tension spring 610; the second screw 68 is screwed on the right end of the front side of the shell 61 along the front-back direction, and the back side of the second screw 68 extends into the inner cavity of the shell 61; the brake plate 69 is rotatably connected to the rear side of the outer wall of the second screw 68 through a bearing, the inner ring of the bearing is in interference fit with the outer wall of the second screw 68, the inner ring of the bearing is fixedly connected with the outer wall of the brake plate 69, the inner wall of the brake plate 69 is in contact with the outer wall of the rotating shaft rod 62, the medical staff unscrews the second screw 68 to the front side, the second screw 68 drives the brake plate 69 to move to the front side, and the brake plate 69 is separated from being in contact with the outer wall of the rotating shaft rod 62 to release the fixation of the rotating shaft rod 62; the outer wall rear side at second screw 68 is cup jointed along the fore-and-aft direction to expanding spring 610, and expanding spring 610 both ends around respectively with the inner wall of casing 61 and the front side fixed connection of brake block 69, and expanding spring 610 is compression spring, and the elastic coefficient is 16N CM, produces elastic deformation after receiving tensile or extrusion, resumes to initial condition after getting rid of external force, and expanding spring 610 plays brake block 69 limiting displacement, prevents that it from following second screw 68 and rotating.

The detailed connection means is a technique known in the art, and the following mainly describes the operation principle and process, but does not describe the electrical control, and the detailed operation is as follows.

When performing thoracic surgery, the medical staff extends the first retractor plate 2 and the second retractor plate 66 into the patient at the position of the surgical incision, and fixes the first retractor plate 2 to the sternum at one side, the medical staff screws out the first screw 54 upwards, so that the first screw 54 drives the brake rack 55 to move upwards and extrude the limit spring 56, the brake rack 55 is disengaged from the limit rack 4, and then the fixing to the housing 51 is released, the medical staff moves the housing 51 to the right side, because the gear 53 is connected with the rotating shaft 52 in a key way, and the rotating shaft 52 is rotatably connected with the inner wall of the housing 51 through a bearing, further the gear 53 is meshed and rotated along the tooth grooves of the limit rack 4 to limit the housing 51, so that the housing 51 moves to the right side along the outer wall of the base 1, so that the housing 51 drives the second retractor plate 66 to move to the right side to be close to the sternum at the other side of the patient, the medical staff screws out the second screw 68 to the front side, the second screw 68 drives the brake plate 69 to move forwards, and under the limiting action of the expansion spring 610, the brake plate 69 is separated from the contact with the outer wall of the rotating shaft rod 62 to release the fixation of the rotating shaft rod 62, the medical staff rotates the rotating shaft rod 62 clockwise or counterclockwise to drive the cylindrical block 63 to rotate, because the inner cavity of the spiral chute 64 is spiral, and the insert block 67 is inserted and connected with the inner cavity of the spiral chute 64 in a matching way, in the process that the cylindrical block 63 drives the spiral chute 64 to rotate, the insert block 67 moves leftwards or rightwards under the rotating force of the spiral chute 64, and under the limiting action of the limiting chute 65, the insert block 67 drives the second retractor plate 66 to accurately move to the sternum at the other side of the patient in a small range for fixation, so as to realize the accurate fixation of the sternums at the two sides of the retraction position of the patient, thereby improving the moving accuracy of the retractor plates, and accurately adjusting the distance between the two retractor, so as to realize the accurate fixation of the position of the sternum of the patient, avoid the frequent adjustment of medical personnel and have strong practicability.

In the description of the present invention, it is to be understood that the terms "top end", "bottom end", "one end", "front side", "rear side", "other end", "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated; also, unless expressly stated or limited otherwise, the terms "mounted," "screwed," "plugged," "interference fit," "disposed," and the like are to be construed broadly, e.g., as a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A thoracic surgical retractor, comprising:

a base (1);

the first traction plate (2) is arranged on the left side of the bottom end of the base (1) along the vertical direction;

the rectangular through hole (3) is formed in the front end of the right side of the base (1) in the left-right direction, and the rear side of an inner cavity of the rectangular through hole (3) is communicated with the rear side of the base (1);

the limiting rack (4) is arranged at the bottom end of the rectangular through hole (3) along the left and right directions;

the movable mechanism (5) is sleeved on the outer wall of the base (1);

fine-tuning (6), install along left right direction the bottom left side of moving mechanism (5), fine-tuning (6) include:

the shell (61) is installed on the left side of the bottom end of the shell (51) in the left-right direction, and a locking mechanism is arranged at the front end of the right side of the shell (61);

the rotating shaft rod (62) is rotatably connected to the right center position of the shell (61) through a bearing along the left-right direction, an inner ring of the bearing is in interference fit with the outer wall of the rotating shaft rod (62), and an outer ring of the bearing is fixedly connected with the inner wall of the shell (61);

a cylindrical block (63) provided on the left side of the spindle shaft (62) in the left-right direction;

the spiral sliding chutes (64) are sequentially arranged on the outer wall of the cylindrical block (63) along the left and right directions;

the limiting sliding groove (65) is formed in the bottom end of the inner cavity of the shell (61) in the left-right direction, and the bottom end of the inner cavity of the limiting sliding groove (65) is communicated with the lower surface of the shell (61);

the second retracting plate (66) is inserted into the inner cavity of the limiting sliding groove (65) along the vertical direction, and the lower surface of the second retracting plate (66) extends out of the inner cavity of the limiting sliding groove (65);

the inserting block (67) is arranged at the top end of the second traction plate (66), and the top end of the inserting block (67) is in adaptive insertion connection with the inner cavity of the spiral sliding groove (64).

2. The thoracic surgical retractor of claim 1, wherein: the moving mechanism (5) comprises:

a housing (51) sleeved on the outer wall of the base (1);

the number of the rotating shafts (52) is two, the two rotating shafts (52) are respectively connected to the left side and the right side of the inner cavity of the shell (51) in a rotating mode through bearings in the front-back direction, the inner ring of each bearing is in interference fit with the outer wall of each rotating shaft (52), and the outer ring of each bearing is fixedly connected with the inner wall of the shell (51);

the number of the gears (53) is two, the two gears (53) are respectively in key connection with the outer walls of the left rotating shaft (52) and the right rotating shaft (52), and the left gear (53) and the right gear (53) are both meshed with the limiting rack (4);

the first screw rod (54) is screwed at the top end of the shell (51) along the vertical direction, the bottom end of the first screw rod (54) extends into the inner cavity of the shell (51), and a locking mechanism is arranged at the bottom end of the first screw rod (54).

3. The thoracic surgical retractor of claim 2 wherein: the locking mechanism includes:

the brake rack (55) is rotatably connected to the bottom end of the outer wall of the first screw rod (54) through a bearing, an inner ring of the bearing is in interference fit with the outer wall of the first screw rod (54), an outer ring of the bearing is fixedly connected with the inner wall of the brake rack (55), and the brake rack (55) can be meshed with the limiting rack (4);

the number of the limiting springs (56) is two, and the upper ends and the lower ends of the two limiting springs (56) are fixedly connected with the left side and the right side of the upper surface of the brake rack (55) and the left side and the right side of the top end of the inner cavity of the shell (51) respectively.

4. The thoracic surgical retractor of claim 1, wherein: the locking mechanism includes:

a second screw (68) screwed to the right end of the front side of the housing (61) in the front-rear direction, the rear side of the second screw (68) extending into the inner cavity of the housing (61);

the brake plate (69) is rotatably connected to the rear side of the outer wall of the second screw rod (68) through a bearing, an inner ring of the bearing is in interference fit with the outer wall of the second screw rod (68), the inner ring of the bearing is fixedly connected with the outer wall of the brake plate (69), and the inner wall of the brake plate (69) is in contact with the outer wall of the rotating shaft rod (62);

the telescopic spring (610) is sleeved on the rear side of the outer wall of the second screw (68) in the front-back direction, and the front end and the rear end of the telescopic spring (610) are fixedly connected with the inner wall of the shell (61) and the front side of the brake plate (69) respectively.