CN212346603U - New type of sternal retractor - Google Patents
New type of sternal retractor Download PDFInfo
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- CN212346603U CN212346603U CN202021733590.6U CN202021733590U CN212346603U CN 212346603 U CN212346603 U CN 212346603U CN 202021733590 U CN202021733590 U CN 202021733590U CN 212346603 U CN212346603 U CN 212346603U
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- 210000001562 sternum Anatomy 0.000 claims abstract description 44
- 238000006073 displacement reaction Methods 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 229910000639 Spring steel Inorganic materials 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 239000008267 milk Substances 0.000 claims description 5
- 210000004080 milk Anatomy 0.000 claims description 5
- 235000013336 milk Nutrition 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 16
- 210000001349 mammary artery Anatomy 0.000 abstract description 7
- 238000013132 cardiothoracic surgery Methods 0.000 abstract description 3
- 210000000481 breast Anatomy 0.000 description 11
- 230000000007 visual effect Effects 0.000 description 8
- 210000000038 chest Anatomy 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
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Abstract
本实用新型属于医疗器械领域，具体涉及一种新型胸骨牵开器，其包括导轨、活动臂和牵开叶片，活动臂下端开设导向槽且通过导向槽装配在导轨上，活动臂可沿导轨发生位移并能实现定位，导轨一端固定连接基座，基座上安装旋转臂，旋转臂可沿轴向转动，对应旋转臂设置锁定机构，通过锁定机构锁定旋转臂位置；活动臂和旋转臂上具有牵开叶片。由于旋转臂可沿轴向转动，因此可以带动牵开叶片在一定范围内摆动，从而在撑开胸骨的过程中，能够将另一侧的胸骨抬高一定的高度，这样医生在手术操作时就能充分的暴露出胸骨底下的情况，在心胸手术中能够方便简单的暴露乳内动脉血管，确保手术视野清晰，为医生手术操作提供极大的方便，降低手术风险。
The utility model belongs to the field of medical equipment, in particular to a novel sternum retractor, which comprises a guide rail, a movable arm and a retraction blade. Displacement and can realize positioning, one end of the guide rail is fixedly connected to the base, the base is installed with a rotating arm, the rotating arm can rotate in the axial direction, and a locking mechanism is set corresponding to the rotating arm, and the position of the rotating arm is locked by the locking mechanism; the movable arm and the rotating arm have Pull the leaves away. Since the rotating arm can be rotated in the axial direction, the retractor blade can be driven to swing within a certain range, so that during the process of opening the sternum, the sternum on the other side can be raised to a certain height, so that the doctor can It can fully expose the situation under the sternum, and it can easily and simply expose the internal mammary artery blood vessels during cardiothoracic surgery, ensuring a clear surgical field of view, providing great convenience for doctors to operate and reducing surgical risks.
Description
Technical Field
The utility model relates to a novel breastbone retractor, which belongs to the field of medical instruments.
Background
The sternum retractor is a very important instrument in cardiothoracic surgery and has a great significance in clinic. The heart bypass and valve replacement operation accounts for about 1/2 of the whole cardiothoracic operation, and the retractor is an instrument which is necessary in the operation process and has a large proportion in the market.
The conventional sternal retractor has some problems:
1. the sternum retractor is mainly used for retracting a sternum, and a traditional sternum retractor can only complete the pulling action in the horizontal direction, so that a doctor can only retract the sternum in the horizontal direction in the operation process, the separation process of blood vessels and muscle tissues under the sternum is relatively troublesome, and the operation visual field under the sternum cannot be fully exposed due to the limited visual field, so that the doctor can cause misoperation due to unclear visual field during operation, the risk of a patient is increased, the operation time is also increased, and great hidden troubles are brought to the operation.
2. The retracting blades of the traditional sternum retractor are fixed on the bracket and cannot be adjusted angularly, so that the sternum is easily damaged in the clinical operation process.
3. Different retraction blades are needed because different chest surgeries need different retraction modes; even in the same thoracotomy operation, aiming at different patients (such as different men and women, different fat and thin, and the like) and when the same person is operated, the retracting blades with different depths are often required to be changed to draw the muscle and the sternum so as to expose the operation part. However, in the conventional retractor, because the retracting blades are fixed on the support, retractors of various models need to be equipped in the thoracotomy operation, different retractors need to be used according to different conditions, on one hand, the cost of surgical instruments is high, and on the other hand, the operation is inconvenient.
4. In the valve replacement operation, a valve draw hook is needed, but the valve draw hook often has the problem of infirm fixation, and potential safety hazards exist in the operation process.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the novel sternum retractor overcomes the defects in the prior art, can realize the traction in the horizontal direction and the axial rotation, is flexible and convenient to operate, has a good traction effect, can conveniently and simply expose the internal mammary artery blood vessels in cardiothoracic surgery, ensures clear operation visual field, and reduces operation risks.
The novel sternum retractor comprises a guide rail, a movable arm and retracting blades, wherein the lower end of the movable arm is provided with a guide groove and is assembled on the guide rail through the guide groove, the movable arm can displace along the guide rail and can realize positioning, one end of the guide rail is fixedly connected with a base, a rotating arm is arranged on the base and can rotate along the axial direction, a locking mechanism is arranged corresponding to the rotating arm, and the position of the rotating arm is locked through the locking mechanism; the movable arm and the rotating arm are provided with retracting blades.
Among the novel sternum retractor, because the swinging boom can be followed the axial and rotated, consequently can drive and lead out the blade and swing in certain extent to at the in-process that struts the sternum, can raise certain height with the sternum of opposite side, the doctor just can be abundant when the operation just like this expose the beneath condition of sternum, can make things convenient for simple exposure mammary artery blood vessel in the heart chest operation, ensure the operation field of vision clear, provide very big convenience for doctor's operation, reduce the operation risk.
Preferably, the contact end faces of the rotary arm and the base are tooth faces engaged with each other (corresponding to the engagement of two end face gears); a longitudinal through hole is formed in the base, and a threaded hole corresponding to the longitudinal through hole is formed in the lower end of the rotating arm; a knob is additionally arranged, the upper end of the rod part of the knob is provided with threads which penetrate through the longitudinal through hole from bottom to top, and the upper end of the rod part of the knob is screwed into the threaded hole; the knob and the two tooth surfaces together constitute the locking mechanism. Loosening the knob to ensure that partial threads at the upper end of the rod part of the knob are still in threaded connection with the threaded hole at the lower end of the rotating arm (namely, the rod part of the knob is in threaded connection with the rotating arm), and at the moment, separating the rotating arm from two tooth surfaces of the base, namely, rotating the rotating arm as required to adjust the angle of the rotating arm; when the knob is screwed and the two tooth surfaces of the rotating arm and the base are engaged with each other, the position of the rotating arm is locked.
Further preferably, the longitudinal through hole of the base is a stepped hole, and the aperture of the lower part of the longitudinal through hole is larger than that of the upper part of the longitudinal through hole; the lower part of the knob rod is sleeved with a locking spring, and the outer diameter of the locking spring is larger than the upper aperture of the stepped hole and smaller than the lower aperture of the stepped hole.
Preferably, the gear surfaces of the base and the rotating arm are provided with limiting structures, each limiting structure comprises a limiting column and an arc limiting groove, the limiting columns and the arc limiting grooves are respectively positioned on different gear surfaces, and the end parts of the limiting columns are always positioned in the arc limiting grooves; corresponding to the limiting structure, scale marks for marking the rotating angle are marked on the rotating arm, and a reference line is marked on the base. The end part of the limiting column is positioned in the arc limiting groove, so that the limiting function can be achieved in the axial rotating process of the rotating arm, namely, the rotating arm is limited to rotate within a certain range through the limiting structure. When a certain scale mark on the rotating arm is aligned with the reference line, the corresponding angle of rotation of the rotating arm is indicated, and the rotating angle of the rotating arm is convenient to control. In this embodiment, the clockwise rotation angle or the counterclockwise rotation angle of the rotating arm is not more than 25 °.
Preferably, the outer sides of the movable arm and the rotating arm are respectively provided with a clamping groove for mounting the retracting blade, the clamping groove is of a semi-closed structure, and a clamping seat is arranged on the retracting blade corresponding to the clamping groove; the clamping seat is clamped into the clamping groove from the non-closed end, so that the assembly of the retracting blade is realized. During the application, can be equipped with the piece of drawing back of different types, different models, through the cooperation of draw-in groove and cassette, can change required piece of drawing back (like the piece of drawing back of the different degree of depth is changed to according to the difference of operation position) and change easy operation convenience in good time according to clinical operation to make most cardiothoracic operation just can accomplish most operation and draw back as long as a retractor, can satisfy the open thoracic cavity operation of the overwhelming majority in clinic promptly through this sternum retractor, the wide coverage.
The utility model provides a following structure is preferred to cassette and draw-in groove:
the clamping seat comprises a seat body, a clamping block, a positioning table and a limiting body from bottom to top in sequence, and is integrally formed, and the seat body of the clamping seat is welded on the retracting blade; a step is arranged in the clamping groove, the groove body is divided into an upper groove body and a lower groove body, the lower groove body is arranged corresponding to the clamping block, the upper groove body is arranged corresponding to the limiting body, the clamping block and the positioning table are both circular in cross section, and a positioning groove matched with the positioning table is formed in the step surface (namely the bottom of the upper groove body); the non-closed end of the upper groove body is in a flaring shape, and the width of the limiting body gradually narrows from the middle position to the position close to the closed end of the upper groove body, and a certain gap is reserved between the limiting body and the inner wall of the upper groove body. Thus, when the clamping seat of the retracting blade is clamped into the clamping groove, the clamping block is clamped into the lower groove body, the limiting body is positioned in the upper groove body, the positioning table is positioned in the positioning groove to realize positioning, the clamping seat is clamped into the clamping groove at the moment, in the normal operation process, the retracting blade is subjected to the action force of the sternum to the inner side of the retracting blade, so that the clamping seat can be always clamped in the clamping groove and cannot be separated from the clamping groove, but the clamping seat can rotate slightly at a certain angle along the axial direction of the clamping seat, on one hand, the retracting blade is firmly arranged on the movable arm or the rotating arm, on the other hand, the effect of automatically adjusting the angle of the retracting blade can be realized in the process of expanding the sternum, the soft traction is realized.
Preferably, spring steel ball positioning structures are arranged on the back surfaces of the movable arm and the rotating arm corresponding to the mounting position of the retracting blade, and the spring steel ball positioning structures are respectively arranged on two sides of the clamping groove; the spring steel ball positioning structure comprises a positioning groove, a steel ball, a spring and a baffle ring, wherein the positioning groove is formed in the back of the movable arm and the back of the rotating arm, the spring is installed on the lower portion of the positioning groove, the steel ball is installed above the spring, the baffle ring is fixedly installed at the position of a notch of the positioning groove, the inner diameter of the baffle ring is smaller than the diameter of the steel ball, and the upper portion of the steel ball protrudes out of the notch of. The assembly positions of the retracting blade and the movable arm or the rotating arm are provided with a spring steel ball positioning structure, so that the retracting blade is softer in installation and can also play a role in tight matching.
Preferably, add the breast inner leaf, the one end of breast inner leaf is for carrying the pulling hook, and the other end is the assembly end, and the assembly end is last to be opened has the assembly groove of using with leading out the blade assembly, and the hook portion of carrying the pulling hook is equipped with the tooth. When the assembly hook is used, the assembly ends of the breast internal blades are hooked on the hook parts of the retracting blades through the assembly grooves, then the rotating arms are rotated by a certain angle, and the breast bone is lifted by the lifting hooks of the breast internal blades, so that the internal mammary artery blood vessels under the breast bone can be fully exposed in the heart-chest operation process, a doctor can have enough operation visual field to separate the internal mammary artery blood vessels, and the operation risk is greatly reduced; meanwhile, the teeth arranged on the hook part of the lifting hook can play a role in fixing firmly.
Preferably, a fastening assembly used for connecting and fastening the valve draw hook is additionally arranged, and the fastening assembly comprises a bracket fixing seat, a movable bracket, an angle positioning bolt, a locking ball head and a fixing bolt; the bracket fixing seat is arranged on the movable arm or the rotating arm; the movable bracket and the bracket fixing seat can rotate relatively and are locked and positioned through the angle positioning bolt; a U-shaped groove is formed in the movable support, and a locking ball head is arranged in the U-shaped groove; the center of the locking ball head is provided with an assembly through hole, and the rod part of the valve drag hook is arranged in the assembly through hole; the upper end of the locking ball head is provided with an upper locking groove from top to bottom, the lower end of the locking ball head is provided with a lower locking groove from bottom to top, the upper locking groove and the lower locking groove are arranged in a staggered mode at intervals, and the upper locking groove and the lower locking groove are both communicated with the assembling through hole; and a fixing bolt is arranged at the opening end of the U-shaped groove, and the valve drag hook is locked and positioned through the fixing bolt. When the valve pulling hook is applied, the rod part of the valve pulling hook is assembled in the assembling through hole of the locking ball head, and due to the special design of the locking ball head, the valve pulling hook is locked by the locking ball head after the fixing bolt is screwed, so that the valve pulling hook and the fastening assembly are connected and fastened, the valve can be pulled more conveniently, the operation visual field is clear, and meanwhile, the potential safety hazard caused by the insecure fixation of the valve pulling hook can be avoided; and the position of the valve draw hook can be flexibly changed according to the operation requirement through the locking ball head, so that the operation is convenient.
Preferably, the bracket fixing seat is arranged on the movable arm or the rotating arm through a locker; the locker comprises a fixed base, a locking screw and a pressing block; the fixed base comprises an upper top plate, a longitudinal beam and a lower bottom plate, the upper top plate is connected with the lower bottom plate into a whole through the longitudinal beam, and a cavity between the upper top plate and the lower bottom plate is a mounting groove; the upper top plate is provided with a screw hole, and the lower end of the locking screw is screwed into the mounting groove through the screw hole; the pressing block is arranged at the lower end of the locking screw rod; a sliding rail is arranged on the bracket fixing seat corresponding to the locker, a convex sliding groove is arranged at the upper part of the sliding rail along the length direction, and a guide sliding groove is arranged at the bottom of the sliding rail; the cross section of the pressing block is I-shaped, the pressing block is assembled in the convex sliding groove of the sliding rail in a sliding mode, meanwhile, the longitudinal beam of the fixing base is assembled in the guide sliding groove of the sliding rail in a sliding mode, and the sliding assembly of the locker and the sliding rail is achieved (the installation position of the bracket fixing base can be conveniently adjusted through the sliding fit structure of the locker and the bracket fixing base); the movable arm or the rotating arm is positioned between the pressing block and the lower bottom plate, and the support fixing seat is fixed on the movable arm or the rotating arm by screwing the locking screw.
Compared with the prior art, the utility model beneficial effect who has is:
novel sternum retractor, because the swinging boom can be followed the axial and rotated, consequently can drive and lead out the blade and swing in certain extent to at the in-process that struts the sternum, can raise certain height with the sternum of opposite side, the doctor just can be abundant when the operation expose the beneath condition of sternum like this, can make things convenient for simple exposure internal mammary artery blood vessel in the heart chest operation, ensure the operation field of vision clear, provide very big convenience for doctor's operation, reduce the operation risk.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a rotary arm;
FIG. 3 is an enlarged view of the view from the direction A in FIG. 2;
FIG. 4 is an enlarged view of section B-B in FIG. 2;
FIG. 5 is an enlarged view of section C-C in FIG. 2;
FIG. 6 is a schematic view of the structure of the base;
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a schematic view of the structure of the pivot arm and the base assembly;
FIG. 9 is a schematic structural view of a retracting blade;
FIG. 10 is a right side view of FIG. 9;
FIG. 11 is a schematic view of the assembly of the inner milk blades to the retracting blades;
FIG. 12 is a top view of the assembly of the inner milk leaf on the retracted leaf;
FIG. 13 is a schematic view of the structure of the inner mammary lobe;
FIG. 14 is a top view of FIG. 12;
FIG. 15 is a schematic view of the teeth of the lifting hook portion of the intra-mammary lobe;
FIG. 16 is a schematic structural view of the fastener assembly;
FIG. 17 is a schematic view of the locking ball;
FIG. 18 is a schematic view of the construction of the load binder;
FIG. 19 is a schematic view of the bracket holder being mounted on the movable arm by means of the locking device;
FIG. 20 is a schematic view of the movable arm of FIG. 1;
FIG. 21 is a side view of FIG. 20;
fig. 22 is a schematic view of the mated assembly of the handle and the toggle structure.
In the figure: 1. a base; 2. a rotating arm; 3. a card slot; 4. a spring steel ball positioning structure; 5. a card holder; 6. retracting the blades; 7. a movable arm; 8. a valve draw hook; 9. a fastening assembly; 10. a locker; 11. a guide rail; 12. a knob; 13. a locking spring; 14. inner mammary lobe; 15. a handle; 16. a pin shaft; 17. shifting blocks; 18. column shifting; 19. a column pulling baffle plate;
1.1, a first tooth surface; 1.2, a guide rail assembly groove; 1.3, longitudinal through holes; 1.4, arc limiting grooves;
2.1, a second tooth surface; 2.2, limiting columns; 2.3, a threaded hole;
3.1, feeding the trough body; 3.2, positioning a groove; 3.3, a lower trough body;
4.1, positioning a groove; 4.2, a spring; 4.3, steel balls; 4.4, a baffle ring;
5.1, a seat body; 5.2, clamping blocks; 5.3, a positioning table; 5.4, a limiting body;
7.1; a support; 7.2, assembling holes; 7.3, a guide groove;
9.1, locking the ball head; 9.2, a movable bracket; 9.3, fixing the bolt; 9.4, a second nut; 9.5, positioning the bolt at an angle; 9.6, a first nut; 9.7, a bracket fixing seat; 9.8, a slide rail;
9.1.1, an upper locking groove; 9.1.2, lower locking groove; 9.1.3, assembling through holes;
9.8.1, a guide chute; 9.8.2, a convex chute;
10.1, locking a screw rod; 10.2, an upper top plate; 10.3, longitudinal beams; 10.4, mounting grooves; 10.5, a lower bottom plate; 10.6, briquetting;
12.1, a knob rod part;
14.1, an assembly end; 14.2, assembling grooves; 14.3, lifting the hook; 14.4, teeth.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings:
as shown in fig. 1 to 22, the novel sternum retractor of this embodiment includes a guide rail 11, a movable arm 7 and a retracting blade 6, wherein a guide groove 7.3 is formed at a lower end of the movable arm 7 and is assembled on the guide rail 11 through the guide groove 7.3, the movable arm 7 can displace along the guide rail 11 and can realize positioning, one end of the guide rail 11 is fixedly connected to a base 1, a rotating arm 2 is mounted on the base 1, the rotating arm 2 can rotate along an axial direction, a locking mechanism is disposed corresponding to the rotating arm 2, and a position of the rotating arm 2 is locked by the locking mechanism; the movable arm 7 and the rotating arm 2 are provided with retracting blades 6.
The guide rail 11 adopts a traditional rack plate, the lower part of the movable arm 7 is provided with a support 7.1 assembled with the guide rail 11, and a guide groove 7.3 is arranged in the support 7.1 and assembled on the rack plate through the guide groove 7.3; the handle 15 is arranged corresponding to the rack plate, the handle 15 is connected with the rack plate through a shifting structure, and the movable arm 7 is driven to move along the guide rail 11 through rotating the handle 15 and realize positioning. The toggle structure in the embodiment comprises a toggle block 17, two toggle columns 18 and a toggle column blocking piece 19, wherein an assembly hole 7.2 is formed in a support 7.1 corresponding to the toggle block 17, the toggle block 17 is installed in the assembly hole 7.2, the upper end of the toggle block is connected with a handle 15 through a pin 16, the lower end of the toggle block is provided with the two toggle columns 18, the two toggle columns 18 are located on two different teeth of a rack plate, the outer ends of the toggle columns 18 are fixedly connected with the toggle column blocking piece 19, and the toggle column blocking piece 19 and the toggle block 17 are respectively located on two sides of the rack plate. In this embodiment, the column-shifting block 19 is provided with two column-shifting 18 holes, after the shifting structure is assembled with the lower support 7.1 of the movable arm 7 and the guide rail 11, the outer ends of the column-shifting 18 are assembled in the column-shifting 18 holes and welded by laser welding to form an integral structure. In this embodiment, a guide rail assembly groove 1.2 is formed in the side surface of the base 1 corresponding to the guide rail 11, and the guide rail 11 and the base 1 are welded into a whole by laser welding after the guide rail 11 is inserted into the guide rail assembly groove 1.2.
The contact end surfaces of the rotating arm 2 and the base 1 are mutually meshed tooth surfaces (equivalent to the meshing of two end surface gears), the tooth surface on the base 1 is defined as a first tooth surface 1.1, and the tooth surface on the rotating arm 2 is defined as a second tooth surface 2.1; a longitudinal through hole 1.3 is formed in the base 1, and a threaded hole 2.3 corresponding to the longitudinal through hole 1.3 is formed in the lower end of the rotating arm 2; a knob 12 is additionally arranged, the upper end of a knob rod part 12.1 is provided with threads, the threads penetrate through a longitudinal through hole 1.3 from bottom to top, and the upper end of the knob rod part is screwed into a threaded hole 2.3; the knob 12 and the two toothed surfaces together constitute the locking mechanism. The longitudinal through hole 1.3 of the base 1 is a step hole, and the aperture of the lower part of the longitudinal through hole is larger than that of the upper part of the longitudinal through hole; the lower part of the knob rod part 12.1 is sleeved with a locking spring 13, and the outer diameter of the locking spring 13 is larger than the upper aperture of the stepped hole and smaller than the lower aperture of the stepped hole. Loosening the knob 12 to ensure that part of threads at the upper end of the knob rod part 12.1 are still in threaded connection with the threaded hole 2.3 at the lower end of the rotating arm 2 (namely, the knob rod part 12.1 is kept connected with the rotating arm 2), and at the moment, separating the two tooth surfaces of the rotating arm 2 and the base 1, namely, rotating the rotating arm 2 as required and adjusting the angle of the rotating arm 2; when the knob 12 is tightened and the rotation arm 2 is engaged with both tooth surfaces of the base 1, the position of the rotation arm 2 is locked.
The tooth surfaces of the base 1 and the rotating arm 2 are provided with limiting structures, each limiting structure comprises a limiting column 2.2 and an arc limiting groove 1.4, the limiting columns 2.2 and the arc limiting grooves 1.4 are respectively positioned on different tooth surfaces, and the end parts of the limiting columns 2.2 are always positioned in the arc limiting grooves 1.4; corresponding to the limit structure, scale marks (respectively-25 degrees, 0 degrees and 25 degrees) for marking the rotation angle are marked on the rotating arm 2, and a reference line is marked on the base 1. The end of the limiting column 2.2 is positioned in the arc limiting groove 1.4, so that the axial rotation process of the rotating arm 2 can be limited, namely, the rotating arm 2 is limited by the limiting structure to rotate within a certain range. When a certain scale mark on the rotating arm 2 is aligned with the reference line, the corresponding angle of rotation of the rotating arm 2 is indicated, so that the rotating angle of the rotating arm 2 can be conveniently controlled. In this embodiment, the clockwise rotation angle or the counterclockwise rotation angle of the rotating arm 2 is not more than 25 °.
In this embodiment, the rotating arm 2 can rotate in the axial direction, so that the retracting blade 6 can be driven to swing within a certain range, and thus, in the process of expanding the sternum, the sternum on the other side can be lifted by a certain height, so that a doctor can fully expose the condition under the sternum during an operation, and an internal mammary artery blood vessel can be conveniently and simply exposed in the cardiothoracic operation, so that the clear operation field of vision is ensured, great convenience is provided for the doctor to perform the operation, and the operation risk is reduced.
In the embodiment, the outer sides of the movable arm 7 and the rotating arm 2 are both provided with a clamping groove 3 for installing a retracting blade, the clamping groove 3 is of a semi-closed structure, and a clamping seat 5 is arranged on the retracting blade 6 corresponding to the clamping groove 3; the clamping seat 5 is clamped into the clamping groove 3 from the non-closed end, so that the assembly of the retracting blade 6 is realized. During the application, can be equipped with the piece 6 that leads out of different types, different models, through draw-in groove 3 and cassette 5's cooperation, can change required piece 6 that leads out (like the piece 6 that leads out that changes the different degree of depth according to the difference of operation position) and change the easy convenience of operation in good time according to clinical operation to make most cardiothoracic operation just can accomplish most operation and lead out as long as a retractor, can satisfy the open operation of the great chest of clinical great majority promptly through this sternum retractor, the wide coverage.
The card seat 5 and the card slot 3 in this embodiment adopt the following structures:
the clamping seat 5 sequentially comprises a seat body 5.1, a clamping block 5.2, a positioning table 5.3 and a limiting body 5.4 from bottom to top, and is integrally formed, and the seat body 5.1 of the clamping seat 5 is welded on the retracting blade 6; a step is arranged in the clamping groove 3, the groove body is divided into an upper groove body 3.1 and a lower groove body 3.3, the lower groove body 3.3 is arranged corresponding to the clamping block 5.2, the upper groove body 3.1 is arranged corresponding to the limiting body 5.4, the clamping block 5.2 and the positioning table 5.3 are both circular in cross section, and a positioning groove 3.2 matched with the positioning table 5.3 is formed in the step surface (namely the bottom of the upper groove body 3.1); the non-closed end of the upper groove body 3.1 is in a flaring shape, the width of the limiting body 5.4 gradually narrows from the middle position to the position close to the closed end of the upper groove body, and a certain gap is reserved between the limiting body and the inner wall of the upper groove body 3.1. Thus, when the clamping seat 5 of the retracting blade 6 is clamped into the clamping groove 3, the clamping block 5.2 is clamped into the lower groove body 3.3, the limiting body 5.4 is positioned in the upper groove body 3.1, the positioning table 5.3 is positioned in the positioning groove 3.2 to realize positioning, and the clamping seat 5 is clamped into the clamping groove 3 at the moment, so that the clamping seat 5 can be always clamped in the clamping groove 3 and cannot be separated from the clamping groove 3 because the retracting blade 6 is acted by the sternum to the inner side of the retracting blade 6 in the normal operation process, but the clamping seat 5 can rotate slightly in a certain angle along the axial direction, so that the retracting blade 6 is firmly arranged on the movable arm 7 or the rotating arm 2 on one hand, and on the other hand, the effect of automatically adjusting the angle of the retracting blade 6 can be achieved in the process of propping up the sternum, soft retraction can be achieved, the sternum is.
In the embodiment, spring steel ball positioning structures 4 are arranged on the back surfaces of the movable arm 7 and the rotating arm 2 corresponding to the mounting positions of the retracting blades 6, and the spring steel ball positioning structures 4 are respectively arranged on two sides of the clamping groove 3; spring steel ball location structure 4 includes constant head tank 4.1, the steel ball 4.3, spring 4.2 and fender ring 4.4, constant head tank 4.1 is seted up at the digging arm 7 and the 2 backs of swinging boom, constant head tank 4.1 lower part installation spring 4.2, spring 4.2 top installation steel ball 4.3, constant head tank 4.1's notch position fixed mounting keeps off ring 4.4, the internal diameter that keeps off ring 4.4 is less than the steel ball diameter, 4.3 upper portion protrusion of steel ball just is spacing in constant head tank 4.1 notch through keeping off ring 4.4. The assembly positions of the retracting blade 6 and the movable arm 7 or the rotating arm 2 are provided with spring steel ball positioning structures 4, so that the retracting blade 6 is softer during installation, and can also play a role in tight matching.
The novel sternum retractor is provided with an inner breast blade 14, one end of the inner breast blade 14 is a lifting hook 14.3, the other end of the inner breast blade 14 is an assembly end 14.1, the assembly end 14.1 is provided with an assembly groove 14.2 for assembling with the pulling blade 6, and a hook part of the lifting hook 14.3 is provided with teeth 14.4. When the device is used, the assembly end 14.1 of the breast inner blade 14 is hooked on the hook part of the retraction blade 6 through the assembly groove 14.2, then the rotating arm 2 is rotated by a certain angle, and the breast bone is lifted by the lifting hook 14.3 of the breast inner blade 14, so that the breast inner artery blood vessel under the breast bone can be fully exposed in the heart chest operation process, a doctor has enough operation visual field to separate the breast inner artery blood vessel, and the operation risk is greatly reduced; meanwhile, the teeth 14.4 arranged on the hook part of the lifting hook 14.3 can play a role in fixing firmly.
The novel sternum retractor is provided with a fastening component 9 for connecting and fastening a valve drag hook, wherein the fastening component 9 comprises a bracket fixing seat 9.7, a movable bracket 9.2, an angle positioning bolt 9.5, a locking ball head 9.1 and a fixing bolt 9.3; the bracket fixing seat 9.7 is arranged on the movable arm 7 or the rotating arm 2; the movable support 9.2 and the support fixing seat 9.7 can rotate relatively and are locked and positioned through the angle positioning bolt 9.5 (a first nut 9.6 is embedded in the support fixing seat 9.7 corresponding to the angle positioning bolt 9.5); a U-shaped groove is formed in the movable support 9.2, and a locking ball head 9.1 is arranged in the U-shaped groove; the central position of the locking ball head 9.1 is provided with an assembly through hole 9.1.3, and the rod part of the valve drag hook 8 is arranged in the assembly through hole 9.1.3; the upper end of the locking ball head 9.1 is provided with an upper locking groove 9.1.1 from top to bottom, the lower end thereof is provided with a lower locking groove 9.1.2 from bottom to top, the upper locking groove 9.1.1 and the lower locking groove 9.1.2 are arranged in a staggered way at intervals, and both the upper locking groove and the lower locking groove are communicated with the assembly through hole 9.1.3; the open end of the U-shaped groove is provided with a fixing bolt 9.3 (a second nut 9.4 is embedded in the movable support 9.2 corresponding to the fixing bolt 9.3), and the valve drag hook 8 is locked and positioned through the fixing bolt 9.3. When the valve pulling hook is used, the rod part of the valve pulling hook 8 is assembled in the assembling through hole 9.1.3 of the locking ball head 9.1, due to the special design of the locking ball head 9.1, after the fixing bolt 9.3 is screwed, the valve pulling hook 8 is locked by the locking ball head 9.1, so that the valve pulling hook 8 and the fastening assembly 9 are connected and fastened, the valve can be pulled more conveniently, the operation visual field is clear, and meanwhile, the potential safety hazard caused by the insecure fixation of the valve pulling hook 8 can be avoided; and the position of the valve drag hook 8 can be flexibly changed according to the operation requirement through the locking ball head 9.1, so that the operation is convenient.
The bracket fixing seat 9.7 in this embodiment is mounted on the movable arm 7 through a locker 10. The locker 10 comprises a fixed base, a locking screw rod 10.1 and a pressing block 10.6; the fixed base comprises an upper top plate 10.2, a longitudinal beam 10.3 and a lower bottom plate 10.5, the upper top plate 10.2 is connected with the lower bottom plate 10.5 into a whole through the longitudinal beam 10.3, and a cavity between the upper top plate 10.2 and the lower bottom plate 10.5 is an installation groove 10.4; a screw hole is formed in the upper top plate 10.2, and the lower end of the locking screw 10.1 is screwed into the mounting groove 10.4 through the screw hole; the pressing block 10.6 is arranged at the lower end of the locking screw rod 10.1 through a screw; a sliding rail 9.8 is arranged on the bracket fixing seat 9.7 corresponding to the locker 10, a convex sliding groove 9.8.2 is arranged at the upper part of the sliding rail 9.8 along the length direction, and a guide sliding groove 9.8.1 is arranged at the bottom of the sliding rail 9.8; the section of the pressing block 10.6 is in an I shape, the pressing block is slidably assembled in the convex sliding groove 9.8.2 of the sliding rail 9.8, meanwhile, the longitudinal beam 10.3 of the fixed base is slidably assembled in the guide sliding groove 9.8.1 of the sliding rail 9.8, the sliding assembly of the locker 10 and the sliding rail 9.8 is realized, and the installation position of the bracket fixing seat 9.7 can be conveniently adjusted through the sliding fit structure of the locker 10 and the bracket fixing seat 9.7; the movable arm 7 or the rotating arm 2 is positioned between the pressing block 10.6 and the lower bottom plate 10.5, and the support fixing seat 9.7 is fixed on the movable arm 7 or the rotating arm 2 by screwing the locking screw 10.1.
Claims (10)
1. The utility model provides a novel sternum retractor, includes guide rail (11), digging arm (7) and leads out blade (6), and guide way (7.3) are seted up and just assemble on guide rail (11) through guide way (7.3) to digging arm (7) lower extreme, and digging arm (7) can be followed guide rail (11) and taken place the displacement and can be realized the location, its characterized in that: one end of the guide rail (11) is fixedly connected with the base (1), the rotating arm (2) is installed on the base (1), the rotating arm (2) can rotate along the axial direction, a locking mechanism is arranged corresponding to the rotating arm (2), and the position of the rotating arm (2) is locked through the locking mechanism; the movable arm (7) and the rotating arm (2) are provided with retracting blades (6).
2. The new sternal retractor of claim 1, wherein: the contact end surfaces of the rotating arm (2) and the base (1) are tooth surfaces which are mutually meshed; a longitudinal through hole (1.3) is formed in the base (1), and a threaded hole (2.3) corresponding to the longitudinal through hole (1.3) is formed in the lower end of the rotating arm (2); a knob (12) is additionally arranged, the upper end of a knob rod part (12.1) is provided with threads, the threads penetrate through a longitudinal through hole (1.3) from bottom to top, and the upper end of the knob rod part is screwed into a threaded hole (2.3); the knob (12) and the two flanks together form the locking mechanism.
3. The new sternal retractor of claim 2, wherein: the longitudinal through hole (1.3) of the base (1) is a step hole, and the aperture of the lower part of the longitudinal through hole is larger than that of the upper part of the longitudinal through hole; the lower part of the knob rod part (12.1) is sleeved with a locking spring (13), and the outer diameter of the locking spring (13) is larger than the upper aperture of the stepped hole and smaller than the lower aperture of the stepped hole.
4. The new sternal retractor of claim 2 or 3, wherein: the tooth surfaces of the base (1) and the rotating arm (2) are provided with limiting structures, each limiting structure comprises a limiting column (2.2) and an arc limiting groove (1.4), the limiting columns (2.2) and the arc limiting grooves (1.4) are respectively positioned on different tooth surfaces, and the end parts of the limiting columns (2.2) are always positioned in the arc limiting grooves (1.4); corresponding to the limiting structure, scale marks for marking the rotating angle are marked on the rotating arm (2), and a reference line is marked on the base (1).
5. The new sternal retractor of claim 1, wherein: clamping grooves (3) for installing retracting blades are formed in the outer sides of the movable arm (7) and the rotating arm (2), the clamping grooves (3) are of semi-closed structures, and clamping seats (5) are arranged on the retracting blades (6) corresponding to the clamping grooves (3); the clamping seat (5) is clamped into the clamping groove (3) from the non-closed end to realize the assembly of the retracting blade (6).
6. The novel sternal retractor of claim 5, wherein: the clamping seat (5) sequentially comprises a seat body (5.1), a clamping block (5.2), a positioning table (5.3) and a limiting body (5.4) from bottom to top, and is integrally formed, and the seat body (5.1) of the clamping seat (5) is welded on the retracting blade (6); a step is arranged in the clamping groove (3), the groove body is divided into an upper groove body (3.1) and a lower groove body (3.3), the lower groove body (3.3) is arranged corresponding to the clamping block (5.2), the upper groove body (3.1) is arranged corresponding to the limiting body (5.4), the cross sections of the clamping block (5.2) and the positioning table (5.3) are both circular, and a positioning groove (3.2) matched with the positioning table (5.3) is formed in the surface of the step; the non-closed end of the upper groove body (3.1) is in a flaring shape, the width of the limiting body (5.4) gradually narrows from the middle position to the position close to the closed end of the upper groove body, and a certain gap is reserved between the limiting body and the inner wall of the upper groove body (3.1).
7. The new sternal retractor of claim 5 or 6, wherein: spring steel ball positioning structures (4) are arranged on the back surfaces of the movable arm (7) and the rotating arm (2) corresponding to the mounting position of the retracting blade (6), and the spring steel ball positioning structures (4) are respectively arranged on two sides of the clamping groove (3); spring steel ball location structure (4) are including constant head tank (4.1), steel ball (4.3), spring (4.2) and fender ring (4.4), constant head tank (4.1) are seted up at digging arm (7) and swinging boom (2) the back, constant head tank (4.1) lower part installation spring (4.2), spring (4.2) top installation steel ball (4.3), notch position fixed mounting of constant head tank (4.1) keeps off ring (4.4), the internal diameter that keeps off ring (4.4) is less than the steel ball diameter, steel ball (4.3) upper portion protrusion is spacing in constant head tank (4.1) notch and through keeping off ring (4.4).
8. The new sternal retractor of claim 1 or 5, wherein: the milk inner blade (14) is additionally arranged, one end of the milk inner blade (14) is a lifting hook (14.3), the other end of the milk inner blade is an assembly end (14.1), an assembly groove (14.2) for assembling with the pulling blade (6) is formed in the assembly end (14.1), and a hook part of the lifting hook (14.3) is provided with teeth.
9. The new sternal retractor of claim 1, 2, 3, 5 or 6, wherein: a fastening component (9) for connecting and fastening the valve drag hook is additionally arranged, and the fastening component (9) comprises a bracket fixing seat (9.7), a movable bracket (9.2), an angle positioning bolt (9.5), a locking ball head (9.1) and a fixing bolt (9.3); the bracket fixing seat (9.7) is arranged on the movable arm (7) or the rotating arm (2); the movable bracket (9.2) and the bracket fixing seat (9.7) can rotate relatively and are locked and positioned through an angle positioning bolt (9.5); a U-shaped groove is arranged on the movable support (9.2), and a locking ball head (9.1) is arranged in the U-shaped groove; the central position of the locking ball head (9.1) is provided with an assembly through hole (9.1.3), and the rod part of the valve drag hook (8) is arranged in the assembly through hole (9.1.3); the upper end of the locking ball head (9.1) is provided with an upper locking groove (9.1.1) from top to bottom, the lower end of the locking ball head is provided with a lower locking groove (9.1.2) from bottom to top, the upper locking groove (9.1.1) and the lower locking groove (9.1.2) are arranged in a staggered mode at intervals, and the upper locking groove and the lower locking groove are communicated with the assembling through hole (9.1.3); and the open end of the U-shaped groove is provided with a fixing bolt (9.3), and the valve draw hook (8) is locked and positioned through the fixing bolt (9.3).
10. The new sternal retractor of claim 9, wherein: the bracket fixing seat (9.7) is arranged on the movable arm (7) or the rotating arm (2) through a locker (10); the locker (10) comprises a fixed base, a locking screw rod (10.1) and a pressing block (10.6); the fixed base comprises an upper top plate (10.2), a longitudinal beam (10.3) and a lower bottom plate (10.5), the upper top plate (10.2) is connected with the lower bottom plate (10.5) into a whole through the longitudinal beam (10.3), and a cavity between the upper top plate (10.2) and the lower bottom plate (10.5) is an installation groove (10.4); a screw hole is formed in the upper top plate (10.2), and the lower end of the locking screw rod (10.1) is screwed into the mounting groove (10.4) through the screw hole; the pressing block (10.6) is arranged at the lower end of the locking screw rod (10.1); a sliding rail (9.8) is arranged on the bracket fixing seat (9.7) corresponding to the locking device (10), a convex sliding groove (9.8.2) is arranged at the upper part of the sliding rail (9.8) along the length direction, and a guide sliding groove (9.8.1) is arranged at the bottom of the sliding rail (9.8); the section of the pressing block (10.6) is I-shaped, the pressing block is assembled in a convex sliding groove (9.8.2) of the sliding rail (9.8) in a sliding mode, meanwhile, a longitudinal beam (10.3) of the fixed base is assembled in a guide sliding groove (9.8.1) of the sliding rail (9.8) in a sliding mode, and the sliding assembly of the locker (10) and the sliding rail (9.8) is achieved; the movable arm (7) or the rotating arm (2) is positioned between the pressing block (10.6) and the lower bottom plate (10.5), and the bracket fixing seat (9.7) is fixed on the movable arm (7) or the rotating arm (2) by screwing the locking screw (10.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021733590.6U CN212346603U (en) | 2020-08-18 | 2020-08-18 | New type of sternal retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021733590.6U CN212346603U (en) | 2020-08-18 | 2020-08-18 | New type of sternal retractor |
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| Publication Number | Publication Date |
|---|---|
| CN212346603U true CN212346603U (en) | 2021-01-15 |
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ID=74143094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021733590.6U Withdrawn - After Issue CN212346603U (en) | 2020-08-18 | 2020-08-18 | New type of sternal retractor |
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| Country | Link |
|---|---|
| CN (1) | CN212346603U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111991039A (en) * | 2020-08-18 | 2020-11-27 | 新华手术器械有限公司 | New type of sternal retractor |
| CN113476086A (en) * | 2021-08-18 | 2021-10-08 | 四川省医学科学院·四川省人民医院 | Be arranged in neural scope multidimension degree support fixing device of cranium microvascular decompression art incision |
-
2020
- 2020-08-18 CN CN202021733590.6U patent/CN212346603U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111991039A (en) * | 2020-08-18 | 2020-11-27 | 新华手术器械有限公司 | New type of sternal retractor |
| CN111991039B (en) * | 2020-08-18 | 2024-11-29 | 新华手术器械有限公司 | Novel sternum retractor |
| CN113476086A (en) * | 2021-08-18 | 2021-10-08 | 四川省医学科学院·四川省人民医院 | Be arranged in neural scope multidimension degree support fixing device of cranium microvascular decompression art incision |
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