CN209899469U - Sternum retractor with double movable arms capable of moving back to back for retraction - Google Patents
Sternum retractor with double movable arms capable of moving back to back for retraction Download PDFInfo
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- CN209899469U CN209899469U CN201920355905.9U CN201920355905U CN209899469U CN 209899469 U CN209899469 U CN 209899469U CN 201920355905 U CN201920355905 U CN 201920355905U CN 209899469 U CN209899469 U CN 209899469U
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- helical gear
- lead screw
- screw
- movable arms
- bar box
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- 210000001562 sternum Anatomy 0.000 title claims abstract description 33
- 230000002146 bilateral effect Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 description 2
- 210000000115 thoracic cavity Anatomy 0.000 description 2
- 238000007675 cardiac surgery Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model provides a two movable arms move sternum retractor that leads out dorsad, includes the bar box, and the front side and the rear side of bar box are the opening respectively, and the through-hole is seted up to the centre on bar box top side, and the vertical axis of through-hole inner bearing installation, the first helical gear of lower extreme fixed mounting of vertical axis, the lead screw that is equipped with bilateral symmetry in the bar box, the outer end of lead screw is connected with the inner wall bearing on bar box left side or right side respectively, and the inner fixed mounting second helical gear respectively of lead screw, second helical gear respectively with first helical gear meshing cooperation. Use the utility model discloses the time, insert two risers breastbone opening part, drive vertical axis, first helical gear through rotating the cylinder and rotate, first helical gear drives the lead screw through the second helical gear and rotates, and the bar box keeps relatively fixed with patient's health, rotates the cylinder, can make slow the drawing out of breastbone, can make about the angle that both sides breastbone was drawn out unanimously to utilize the auto-lock of screw-thread fit connection, can prevent effectively that riser automatic re-setting from bringing the injury for patient, the structure is more stable.
Description
Technical Field
The utility model belongs to the field of medical appliances, in particular to a sternum retractor with double movable arms moving back to back for retraction.
Background
In various thoracotomy operations of the thoracic and cardiac surgery, in order to facilitate medical staff to see the specific conditions in the chest cavity of a patient more comprehensively, a sternum spreader is needed to expand the treatment visual field of the medical staff, the conventional sternum retractor generally adopts a rotating wheel and a rack which are matched to drive a movable arm to move, when the rotating wheel is rotated, the phenomenon of slipping frequently occurs between the rotating wheel and the rack, so that the retracted sternum is folded suddenly, secondary retraction is needed, and great harm is brought to the patient; when the single movable arm is adopted to retract the sternum, the hand holding the retractor has certain limiting acting force on the retractor, so that the sternum cannot be symmetrically opened towards two sides at the same time, the retracting angle of one side of the sternum is too large, the recovery after the sternum operation is not facilitated, and the actual requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sternum retractor with double movable arms moving back to back for retracting, which is used for solving the defects in the prior art.
The utility model discloses a following technical scheme realizes:
the utility model provides a sternum retractor that two movable arms moved back to back and lead out, including the bar box, the front side and the rear side of bar box are the opening respectively, the through-hole is seted up in the middle of bar box top side, the vertical axis of through-hole inner bearing installation, the first helical gear of lower extreme fixed mounting of vertical axis, be equipped with bilateral symmetry's lead screw in the bar box, the outer end of lead screw is connected with the inner wall bearing on bar box left side or right side respectively, the inner fixed mounting second helical gear respectively of lead screw, the second helical gear respectively with first helical gear meshing cooperation, the periphery of lead screw is threaded installation screw respectively, the plane of screw top side and bottom side respectively with the inner wall sliding contact cooperation of bar box, the upper end of support is fixed connection respectively to the front side of screw, two supports are along the axis bilateral symmetry of vertical axis, the lower extreme of support is fixed mounting riser respectively, the coaxial cylinder of upper end fixed mounting.
In the sternum retractor with the two movable arms moving back and forth for retraction, the lower part of the vertical plate is a curved plate, the opening of the curved plate on the left side faces to the left, and the opening of the curved plate on the right side faces to the right.
According to the sternum retractor with the double movable arms capable of retracting back to back, the vertical plate is fixedly connected with the lower end of the support through the bolts respectively.
According to the sternum retractor with the double movable arms capable of moving back and forth, the periphery of the cylinder is provided with the threaded holes which are bilaterally symmetrical, and the handles are respectively installed in the threaded holes in a threaded mode.
A sternal retractor with two movable arms that move back to back is described above, with the axis of the threaded hole tilted upward.
According to the sternum retractor with the double movable arms capable of retracting in the back direction, the inner ends of the peripheries of the screw rods are respectively provided with the shaft bases in a bearing mode, and the shaft bases are respectively and fixedly connected with the inner wall of the strip-shaped box.
The utility model has the advantages that: the utility model discloses simple structure uses the simple operation, utilizes two digging arms dorsad to remove can be more steady pull open the breastbone to utilize threaded connection's auto-lock, make the retractor keep leading out the angle, utilize threaded connection to adjust digging arm opening distance simultaneously, stability is better, can satisfy the market demand, is fit for promoting. Use the utility model discloses the time, insert two risers breastbone opening part, drive the vertical axis through rotating the cylinder, first helical gear rotates, first helical gear passes through the second helical gear and drives the lead screw rotation, turn to of two lead screws is opposite, simultaneously because the screw only can only control about the bar box, so the screw can drive the riser dorsad removal that corresponds through the support respectively, the riser begins to stimulate the breastbone, handheld bar box this moment, make bar box and patient's health keep relatively fixed, constantly rotate the cylinder, can make slow the drawing of breastbone, the angle that both sides breastbone was drawn out about can making is unanimous, and utilize the auto-lock of screw-thread fit connection, can prevent effectively that riser automatic re-setting from bringing the injury for patient, the structure is more stable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is an enlarged view of section I of FIG. 1; fig. 3 is a partial enlarged view of ii of fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A sternum retractor with double movable arms moving back to back for retraction comprises a strip-shaped box 1, wherein the front side and the rear side of the strip-shaped box 1 are respectively provided with an opening, the middle of the top side of the strip-shaped box 1 is provided with a through hole 2, a vertical shaft 3 is arranged in the through hole 2 through a bearing, a first bevel gear 4 is fixedly arranged at the lower end of the vertical shaft 3, a lead screw 5 which is bilaterally symmetrical is arranged in the strip-shaped box 1, the outer end of the lead screw 5 is respectively connected with the inner wall bearing at the left side or the right side of the strip-shaped box 1, a second bevel gear 13 is respectively fixedly arranged at the inner end of the lead screw 5, the second bevel gear 13 is respectively meshed and matched with the first bevel gear 4, a screw 6 is respectively and threadedly arranged at the periphery of the lead screw 5, the planes at the top side and the bottom side of the screw 6 are respectively in sliding contact and matched with the inner wall of the strip-shaped box 1, the screw 6, the lower ends of the supports 7 are respectively and fixedly provided with a vertical plate 8, and the upper ends of the vertical shafts 3 are fixedly provided with coaxial columns 9. The utility model discloses simple structure uses the simple operation, utilizes two digging arms dorsad to remove can be more steady pull open the breastbone to utilize threaded connection's auto-lock, make the retractor keep leading out the angle, utilize threaded connection to adjust digging arm opening distance simultaneously, stability is better, can satisfy the market demand, is fit for promoting. Use the utility model discloses the time, insert two risers 8 breastbone opening parts, drive vertical axis 3 through rotating cylinder 9, first helical gear 4 rotates, first helical gear 4 drives lead screw 5 through second helical gear 13 and rotates, turning to of two lead screws 5 is opposite, simultaneously because screw 6 only can only control about strip box 1, so screw 6 can drive the riser 8 dorsad removal that corresponds through support 7 respectively, riser 8 begins the pulling breastbone, handheld strip box 1 this moment, make strip box 1 keep relatively fixed with patient's health, constantly rotate cylinder 9, can make the slow extraction of breastbone, the angle that both sides were extracted about can making is unanimous, and utilize the auto-lock of screw-thread fit connection, can prevent effectively that riser 8 automatic re-setting from bringing the injury for patient, the structure is more stable.
Specifically, as shown in the drawing, the lower portion of the vertical plate 8 in the present embodiment is a curved plate, the opening of the left curved plate faces leftward, and the opening of the right curved plate faces rightward. The opening groove of the curved plate can hook the sternum, so that slipping between the vertical plate 8 and the sternum is avoided.
Specifically, as shown in the figure, the vertical plate 8 and the lower end of the bracket 7 are respectively fixedly connected by bolts. The vertical plate 8 can be conveniently detached from the bracket 7, and the vertical plate 8 with different sizes of the opening grooves can be conveniently replaced.
Further, as shown in the figure, threaded holes 10 are formed in the periphery of the cylinder 9 in bilateral symmetry, and handles 11 are respectively installed in the threaded holes 10 in a threaded manner. Rotate cylinder 9, vertical axis 3 more laborsavingly through handle 11, when need not rotate cylinder 9, twist out handle 11 from corresponding screw hole 10, avoid handle 11 to shelter from the operation field of vision.
Further, as shown in the drawings, the axis of the threaded hole 10 in the present embodiment is inclined upward. The outer end of the handle 11 is inclined upwards, so that a user can hold the handle 11, the handle 11 is rotated more easily, and the use experience of the user can be improved.
Furthermore, as shown in the figure, the inner ends of the peripheries of the lead screws 5 are respectively provided with shaft seats 12 in a bearing manner, and the shaft seats 12 are respectively fixedly connected with the inner wall of the strip-shaped box 1. The stability of the screw rod 5 is improved, and the screw rod 5 is prevented from shaking.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. A sternum retractor with double movable arms capable of retracting in a back-to-back moving mode is characterized in that: comprises a strip box (1), the front side and the rear side of the strip box (1) are respectively provided with an opening, the middle of the top side of the strip box (1) is provided with a through hole (2), the through hole (2) is internally provided with a vertical shaft (3) in a bearing way, the lower end of the vertical shaft (3) is fixedly provided with a first bevel gear (4), the strip box (1) is internally provided with a lead screw (5) which is bilaterally symmetrical, the outer end of the lead screw (5) is respectively connected with the inner wall bearing at the left side or the right side of the strip box (1), the inner end of the lead screw (5) is respectively fixedly provided with a second bevel gear (13), the second bevel gear (13) is respectively meshed and matched with the first bevel gear (4), the periphery of the lead screw (5) is respectively provided with a screw (6) in a threaded way, the planes at the top side and the bottom side of the screw (6) are respectively matched with the inner wall of the strip box (1) in a sliding contact way, the front side of the screw, the lower ends of the supports (7) are respectively and fixedly provided with a vertical plate (8), and the upper ends of the vertical shafts (3) are fixedly provided with coaxial columns (9).
2. The sternal retractor with two movable arms moving away from each other for retraction according to claim 1, wherein: the lower part of the vertical plate (8) is a curved plate, the opening of the curved plate on the left side faces to the left, and the opening of the curved plate on the right side faces to the right.
3. A sternal retractor with two mobile arms that are retracted with moving away from each other, according to claim 2, wherein: the vertical plate (8) is fixedly connected with the lower end of the support (7) through bolts respectively.
4. The sternal retractor with two movable arms moving away from each other for retraction according to claim 1, wherein: the periphery of the column (9) is provided with threaded holes (10) which are bilaterally symmetrical, and handles (11) are respectively installed in the threaded holes (10) in a threaded manner.
5. The sternal retractor with two movable arms moving away from each other for retraction according to claim 4, wherein: the axis of the threaded hole (10) is inclined upwards.
6. The sternal retractor with two movable arms moving away from each other for retraction according to claim 1, wherein: the inner end of the periphery of the screw rod (5) is respectively provided with a shaft seat (12) in a bearing way, and the shaft seats (12) are respectively fixedly connected with the inner wall of the strip-shaped box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920355905.9U CN209899469U (en) | 2019-03-20 | 2019-03-20 | Sternum retractor with double movable arms capable of moving back to back for retraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920355905.9U CN209899469U (en) | 2019-03-20 | 2019-03-20 | Sternum retractor with double movable arms capable of moving back to back for retraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209899469U true CN209899469U (en) | 2020-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920355905.9U Expired - Fee Related CN209899469U (en) | 2019-03-20 | 2019-03-20 | Sternum retractor with double movable arms capable of moving back to back for retraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209899469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111329538A (en) * | 2020-03-05 | 2020-06-26 | 青岛大学附属医院 | Sternum retractor for cardiothoracic vascular surgery and using method thereof |
| CN113349851A (en) * | 2021-07-16 | 2021-09-07 | 华中科技大学同济医学院附属协和医院 | Duodenum intracavity spreader |
-
2019
- 2019-03-20 CN CN201920355905.9U patent/CN209899469U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111329538A (en) * | 2020-03-05 | 2020-06-26 | 青岛大学附属医院 | Sternum retractor for cardiothoracic vascular surgery and using method thereof |
| CN113349851A (en) * | 2021-07-16 | 2021-09-07 | 华中科技大学同济医学院附属协和医院 | Duodenum intracavity spreader |
| CN113349851B (en) * | 2021-07-16 | 2023-02-14 | 华中科技大学同济医学院附属协和医院 | Duodenum intracavity spreader |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |