CN115153869A - Instrument supporting device for operation - Google Patents

Abstract

The invention discloses a surgical instrument supporting device which comprises an underframe, a first connecting rod, a second connecting rod, a third connecting rod and an ejector rod, wherein a ball seat is installed on the upper part of the underframe, a loop bar is installed at a position vertically above the outer part of the ball seat, an inserted bar is inserted into the loop bar, a stud penetrates through the position vertically below the outer part of the ball seat, the stud is in threaded connection with the inserted bar, an operating bed connecting structure is arranged on the outer part of the inserted bar, the operating bed connecting structure comprises a fixed column, the fixed column is fixedly installed on the outer part of the inserted bar, a clamping seat is fixedly installed at one end of the fixed column, a screw rod penetrates through the fixed column and the clamping seat, and the screw rod is in threaded connection with a contact surface of the fixed column. The supporting device for the surgical instruments, provided by the invention, has the advantages of diversified using modes, strong universality, adjustable function, wide application range, suitability for various different using conditions and suitability for various different using conditions.

Description

Instrument supporting device for operation

Technical Field

The invention relates to the field of surgical instruments, in particular to a supporting device for an instrument for an operation.

Background

In a medical operation, various surgical instruments such as surgical forceps, hemostatic forceps, wire clamping forceps and scissors need to be used, and when the surgical instruments are used, the supporting devices need to be used for unified placement, so that a doctor can take the surgical instruments conveniently in the operation process;

however, the existing surgical instrument supporting device is single in working mode when in use, the traditional supporting device adopts a structure of a bracket and a tray with rollers, when in use, the rollers push the tray and the bracket to the positions to be used, and when in laparoscopic rectal surgery, the lithotomy positions need to be placed, the traditional instrument tray cannot be fixed on an operating bed and is inconvenient to place, so that the progress efficiency of the surgery is influenced; secondly, traditional apparatus supporting device for operation does not possess regulatory function, leads to unable the tray that is applicable to various not unidimensional when using, and the commonality is poor.

Disclosure of Invention

The invention mainly aims to provide a supporting device for an instrument for an operation, which can effectively solve the problems in the background technology that: the existing supporting device for the surgical instruments is single in working mode when in use, the traditional supporting device adopts a structure of a bracket and a tray with rollers, when in use, the rollers push the tray and the tray to positions to be used, in laparoscopic rectal surgery, lithotomy positions need to be placed, the traditional instrument tray cannot be fixed on an operating bed and is inconvenient to place, and a doctor is inconvenient to use, so that the progress efficiency of the surgery is influenced; secondly, traditional apparatus supporting device for operation does not possess regulatory function, leads to unable tray that is applicable to various not unidimensional when using, the poor technical problem of commonality.

In order to achieve the purpose, the invention adopts the technical scheme that:

a supporting device for surgical instruments comprises a base frame, a first connecting rod, a second connecting rod, a third connecting rod and a top rod, wherein a ball seat is installed at the upper part of the base frame, a loop rod is installed at a position vertically above the outer part of the ball seat, an inserted rod is inserted into the loop rod, a stud penetrates through the position vertically below the outer part of the ball seat, and the stud is in threaded connection with the inserted rod;

an operating bed connecting structure is arranged outside the inserted bar, the operating bed connecting structure comprises a fixed column, the fixed column is fixedly arranged outside the inserted bar, a clamping seat is fixedly arranged at one end of the fixed column, a screw rod penetrates through between the fixed column and the clamping seat, the screw rod is in threaded connection with a contact surface of the fixed column, and the clamping seat is shaped like a Chinese character' \21274;

the inserted bar, the first connecting rod, the second connecting rod, the third connecting rod and the ejector rod are sequentially connected, the inserted bar and the first connecting rod, the first connecting rod and the second connecting rod, and the third connecting rod and the ejector rod are connected through adjusting structures, and the second connecting rod and the third connecting rod are connected through connecting sleeves;

the top end of the ejector rod is provided with a bracket structure, and a tray is placed on the inner side of the bracket structure.

As a further scheme of the invention, the underframe is composed of a '21274', a reinforcing transverse rod, a reinforcing inclined rod and two vertical rods, rollers are arranged at two ends of the '21274', and at the bottom ends of the two vertical rods, the reinforcing transverse rod is arranged at the inner side of the '21274', and two ends of the reinforcing inclined rod are connected between the sleeve rod and the reinforcing transverse rod.

As a further scheme of the present invention, the bracket structure includes two first angle bars, two second angle bars, and two end bars, the two first angle bars, the two second angle bars, and the two end bars are arranged in a rectangular shape, and connection ends of the two first angle bars, the two second angle bars, and the two end bars are connected through a drawing bar.

As a further scheme of the invention, an expansion structure is arranged between the two first angle rods and the two end rods, the expansion structure comprises two bent rods, two inner threaded rods, a sleeve and a screw rod, the two bent rods are respectively arranged at positions close to one ends of the outer parts of the two first angle rods, the two inner threaded rods are respectively and fixedly connected to one ends of the two bent rods, the sleeve is sleeved between the two inner threaded rods, and the screw rod penetrates through the inner parts of the two inner threaded rods.

As a further scheme of the invention, a notch is formed in the middle of the sleeve close to the front position, a rotating handle is arranged outside the screw rod and positioned at the notch, the screw rod is in threaded connection with the contact surfaces of the two inner threaded rods, and a reinforcing rod is arranged between the sleeve and the ejector rod.

As a further scheme of the invention, the adjusting structure comprises a hollow groove, a convex block and a clamping structure, the hollow groove is formed in the center of the top surface of the inserted rod, the convex block is installed in the center of the bottom end of the first connecting rod, and the convex block and the hollow groove are rotatably connected through a rotating shaft.

As a further scheme of the present invention, the clamping structure includes a spring seat, the spring seat is fixedly installed at a position, close to the rear, outside the inserted link, the inner wall of the hollow groove is provided with a first groove close to the rear surface, the outside of the rotating shaft is provided with an outer toothed disc, the rear surface of the projection is provided with a second groove, an inner toothed disc is installed inside the second groove, the inner toothed disc is meshed with the outer toothed disc, and the first groove is adaptively matched with the outer toothed disc.

As a further scheme of the invention, a guide rod is installed at the center of the interior of the spring seat, the rotating shaft penetrates through the interior of the spring seat and is connected with a limiting disc, a return spring is sleeved on the outer side of the guide rod in the interior of the spring seat, a guide groove is formed in the contact surface of the rotating shaft and the guide rod, and the guide rod and the guide groove are both in a hexagonal structure.

As a further scheme of the invention, the opposite ends of the second connecting rod and the third connecting rod are respectively connected with a limiting block inside the connecting sleeve, and a damping rubber pad is arranged between the outside of the two limiting blocks and the connecting sleeve.

The invention has the following beneficial effects:

1. the bottom frame, the sleeve rod and the inserted rod are matched with the stud, the roller is arranged at the bottom of the bottom frame, the sleeve rod is arranged at the upper part of the bottom frame through the ball seat, the inserted rod is inserted into the sleeve rod and fixed through the stud, when the multifunctional combined type operating table is used, the inserted rod can be inserted into the sleeve rod and supported through the bottom frame, and can be pulled out and fixed on the stainless steel rail at the side edge of the operating table for use, so that the multifunctional combined type operating table is diversified in use mode, suitable for various different use conditions and strong in universality;

2. by arranging the operating bed connecting structure to match with the loop bar, the inserting bar and the stud, after the loop bar is pulled out of the inserting bar, the clamping seat is clamped outside the stainless steel rail on the side edge of the operating bed, and then the inserting bar is fixed through the screw rod, so that the inserting bar can be connected with the stainless steel rail on the side edge of the operating bed, the whole supporting device is arranged on the side edge of the operating bed, a doctor can place an instrument for operation through a tray more conveniently in an operation, and particularly, the using effect of the supporting device is improved under the condition that the lithotomy position needs to be placed in the operating bed during a laparoscopic rectal operation;

3. the adjusting structure is matched with the connecting structure of the operating table, the first connecting rod, the second connecting rod and the third connecting rod are arranged between the inserted rod and the ejector rod and are sequentially connected with the adjusting structure and the connecting sleeve, when the inserted rod is fixed on the side edge of the operating table, the position and the angle of the bracket structure can be adjusted through the rotation of the first connecting rod, the second connecting rod and the third connecting rod, and when the first connecting rod, the second connecting rod and the third connecting rod are rotated, the height of the tray can be changed, so that a doctor can conveniently arrange the tray at the most proper position for self operation, in the operation process, the auxiliary work of other medical personnel for transmitting operation instruments is reduced, and the operation progress efficiency is higher;

4. through setting up chucking structure cooperation regulation structure, when adjusting first connecting rod, second connecting rod and third connecting rod angle, promote outer fluted disc and internal tooth dish separation through pressing the pivot, after adjusting to the demand angle, loosen the application of force to the pivot, reset spring elasticity promotes spacing dish and removes, make outer fluted disc and internal tooth dish meshing, can fix the position of first connecting rod, second connecting rod and third connecting rod, and adopt the mode of fluted disc meshing, make the stability of first connecting rod, second connecting rod, third connecting rod after adjusting the position higher;

5. the tray structure is arranged at the top of the ejector rod and used for bearing trays, the tray structure is arranged in a rectangular arrangement mode of two first angle rods, two second angle rods and two end rods, and adjacent positions are connected through the pull rods, so that the distance between the two first angle rods, the two second angle rods and the two end rods can be adjusted, the tray structure can bear the trays with different sizes, the application range is effectively expanded, and the tray structure is suitable for surgical instruments with different sizes required to be used in different operations;

6. through setting up extension structure cooperation bracket structure, when the interval between two first hornbars, two second hornbars and two end bars of adjustment, the accessible rotates the lead screw for the lead screw promotes the size that bracket structure was adjusted to the mode that the threaded rod removed in the sleeve, convenient operation, swift.

Drawings

FIG. 1 is a schematic view of the overall construction of a supporting device for surgical instruments according to the present invention;

FIG. 2 is an exploded view of a rod and a rod of the surgical instrument support apparatus of the present invention;

FIG. 3 is an exploded view of a tray and bracket arrangement of a surgical instrument support apparatus of the present invention;

FIG. 4 is a cross-sectional view of a sleeve of a surgical instrument support apparatus of the present invention;

FIG. 5 is an exploded view of the device for supporting a surgical instrument of the present invention as shown in FIG. 4;

FIG. 6 is an enlarged view of the junction between the insert rod and the first link rod of the supporting device for surgical instruments according to the present invention;

FIG. 7 is an exploded view of the insertion rod and first link of the device for supporting a surgical instrument of the present invention shown in FIG. 6;

FIG. 8 is a rear perspective view of the device for supporting a surgical instrument of the present invention as shown in FIG. 7;

FIG. 9 is a cross-sectional view of FIG. 7 of a surgical instrument support apparatus of the present invention;

FIG. 10 is a cross-sectional view of the connection between the second link and the third link of the device for supporting surgical instruments according to the present invention;

FIG. 11 is an illustration of an adjustment of a surgical instrument support apparatus of the present invention as shown in FIG. 1;

figure 12 is an illustration of an adjustment of a surgical instrument support apparatus of the present invention shown in figure 2.

In the figure: 1. a chassis; 2. an adjustment structure; 3. a ball seat; 4. a loop bar; 5. a stud; 6. inserting a rod; 7. an operating bed connecting structure; 8. a first link; 9. a second link; 10. a third link; 11. a top rod; 12. a bracket structure; 13. a tray; 14. fixing a column; 15. a screw; 16. a card holder; 17. a first corner bar; 18. a second corner bar; 19. an end bar; 20. drawing a rod; 21. an extension structure; 22. bending a rod; 23. an inner threaded rod; 24. a sleeve; 25. a screw rod; 26. an empty groove; 27. a bump; 28. a rotating shaft; 29. a clamping structure; 30. a spring seat; 31. a first groove; 32. an external fluted disc; 33. a second groove; 34. an inner fluted disc; 35. a guide bar; 36. a limiting disc; 37. a return spring; 38. a guide groove; 39. connecting sleeves; 40. a limiting block; 41. a damping rubber cushion.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.

As shown in fig. 1 to 12, the supporting device for the surgical instruments comprises an underframe 1, a first connecting rod 8, a second connecting rod 9, a third connecting rod 10 and an ejector rod 11, wherein a ball seat 3 is installed on the upper portion of the underframe 1, a loop bar 4 is installed on the position vertically above the outer portion of the ball seat 3, an inserted bar 6 is inserted into the loop bar 4, a stud 5 penetrates through the position vertically below the outer portion of the ball seat 3, and the stud 5 is in threaded connection with the inserted bar 6.

In the embodiment, an operating bed connecting structure 7 is arranged outside the inserted link 6, the operating bed connecting structure 7 comprises a fixed column 14, the fixed column 14 is fixedly installed outside the inserted link 6, a clamping seat 16 is fixedly installed at one end of the fixed column 14, a screw rod 15 penetrates through between the fixed column 14 and the clamping seat 16, the screw rod 15 is in threaded connection with a contact surface of the fixed column 14, and the clamping seat 16 is in a shape like '21274'.

The accessible is outside at the stainless steel rail of operation table side with cassette 16 card, then rotates screw rod 15, and screw rod 15 compresses tightly the outside of operation table stainless steel rail through the screw thread between with fixed column 14, installs inserted bar 6 at the side of operation table.

In this embodiment, the inserted link 6, the first connecting rod 8, the second connecting rod 9, the third connecting rod 10 and the ejector rod 11 are connected in sequence, the inserted link 6 and the first connecting rod 8, the first connecting rod 8 and the second connecting rod 9, and the third connecting rod 10 and the ejector rod 11 are connected through the adjusting structure 2, and the second connecting rod 9 and the third connecting rod 10 are connected through the connecting sleeve 39.

Inserted bar 6, first connecting rod 8, second connecting rod 9, third connecting rod 10 and ejector pin 11 all adopt swing joint's mode in proper order, can conveniently adjust tray 13 position, angle at the in-process that uses to make tray 13 can adapt to the position of standing when doctor's operation more and conveniently take medical instrument's position.

In this embodiment, a bracket structure 12 is disposed at the top end of the top rod 11, and a tray 13 is disposed inside the bracket structure 12.

The tray 13 is carried by the carrier structure 12 such that the tray 13 can be removed from the carrier structure 12 to facilitate removal of the tray 13 for cleaning and sterilization.

In the embodiment, the underframe 1 consists of a '21274' shaped rod, a reinforcing transverse rod, a reinforcing inclined rod and two vertical rods, wherein rollers are respectively arranged at two ends of the '21274' shaped rod and at the bottom ends of the two vertical rods, the reinforcing transverse rod is arranged at the inner side of the '21274' shaped rod, and two ends of the reinforcing inclined rod are connected between the sleeve rod 4 and the reinforcing transverse rod.

Four rollers are arranged at the bottom of the underframe 1, so that the whole supporting device is kept on the characteristic that the traditional supporting device can be moved conveniently, and the application range of the surgical instrument supporting device is widened.

In this embodiment, the bracket structure 12 includes two first corner bars 17, two second corner bars 18, and two end bars 19, the two first corner bars 17, the two second corner bars 18, and the two end bars 19 are arranged in a rectangular shape, and the connecting ends of the two first corner bars 17, the two second corner bars 18, and the two end bars 19 are connected by a drawing rod 20.

With bracket structure 12 by two first hornbars 17, two second hornbars 18, two end bars 19 constitute to connect through taking out pole 20 each other, make bracket structure 12's size adjustable, thereby can be applicable to various not unidimensional tray 13, be convenient for the doctor to the not unidimensional medical instrument change not unidimensional tray 13, application scope is more extensive.

In this embodiment, the extension structures 21 are respectively disposed between the two first angle bars 17 and the two end bars 19, each extension structure 21 includes two bent bars 22, two inner threaded rods 23, a sleeve 24 and a screw rod 25, the two bent bars 22 are respectively installed at positions close to one ends of the outsides of the two first angle bars 17, the two inner threaded rods 23 are respectively and fixedly connected to one ends of the two bent bars 22, the sleeve 24 is sleeved between the two inner threaded rods 23, and the screw rod 25 penetrates through the insides of the two inner threaded rods 23.

By rotating the screw rod 25, the screw rod 25 pushes the two inner threaded rods 23 to move in the sleeve 24 in opposite directions, so that the bent rod 22 moves, and the distance between the two first angle rods 17 can be enlarged, thereby achieving the purpose of adjusting the bearing space.

In this embodiment, a notch is formed in the middle of the sleeve 24 close to the front, a rotating handle is installed outside the screw rod 25 at the notch, the screw rod 25 is in threaded connection with the contact surfaces of the two inner threaded rods 23, and a reinforcing rod is arranged between the sleeve 24 and the ejector rod 11.

The turning handle can facilitate people to operate the rotary screw rod 25, and the reinforcing rod between the sleeve 24 and the ejector rod 11 can better fix the position of the sleeve 24, so that the sleeve 24 is more stable.

In this embodiment, the adjusting structure 2 includes a hollow groove 26, a projection 27 and a clamping structure 29, the hollow groove 26 is opened at the center of the top surface of the insert rod 6, the projection 27 is installed at the center of the bottom end of the first link 8, and the projection 27 and the hollow groove 26 are rotatably connected by a rotating shaft 28.

When the medical instrument adjusting tray is used, the first connecting rod 8 can rotate in the hollow groove 26 through the bump 27 by utilizing the rotating shaft 28, the angle of the first connecting rod 8 can be adjusted, and the position or the angle of the tray 13 can be adjusted in multiple directions by matching with other adjusting structures 2, so that the medical instrument adjusting tray can be more suitable for the position where a doctor can conveniently take and place medical instruments.

In this embodiment, the clamping structure 29 includes a spring seat 30, the spring seat 30 is fixedly mounted at a position near the rear of the outer portion of the inserting rod 6, a first groove 31 is formed in the inner wall of the empty groove 26 near the rear surface, an outer toothed disc 32 is mounted on the outer portion of the rotating shaft 28, a second groove 33 is formed in the rear surface of the protruding block 27, an inner toothed disc 34 is mounted inside the second groove 33, the inner toothed disc 34 is meshed with the outer toothed disc 32, and the first groove 31 is adaptively matched with the outer toothed disc 32.

When angle regulation, press pivot 28, pivot 28 can promote the inside that first recess 31 was taken in to outer fluted disc 32 for outer fluted disc 32 breaks away from with internal tooth dish 34, and first connecting rod 8 can rotate this moment, adjusts suitable angle back, loosens pivot 28, and outer fluted disc 32 card is gone into the inside of internal tooth dish 34, can fix the position of first connecting rod 8, can stabilize tray 13 position.

In this embodiment, a guide rod 35 is installed at the inner center of the spring seat 30, the rotating shaft 28 penetrates through the spring seat 30 and is connected with a limiting disc 36, a return spring 37 is sleeved on the outer side of the guide rod 35 inside the spring seat 30, a guide groove 38 is formed in the contact surface of the rotating shaft 28 and the guide rod 35, and the guide rod 35 and the guide groove 38 are both in a hexagonal structure.

The hexagonal guide rod 35 and the guide groove 38 can be matched for limiting, so that the rotating shaft 28 cannot rotate, and the return spring 37 in the spring seat 30 can be used for pushing the outer fluted disc 32 to reset through elasticity, so that the operation is more convenient and faster.

In this embodiment, the opposite ends of the second connecting rod 9 and the third connecting rod 10 are both connected with a limiting block 40 inside the connecting sleeve 39, and a damping rubber pad 41 is arranged between the outside of the two limiting blocks 40 and the connecting sleeve 39.

The stopper 40 can make the non-circumferencial direction of second connecting rod 9 and third connecting rod 10 obtain spacingly, and secondly damping cushion 41 then can effectual increase the friction between second connecting rod 9 and the third connecting rod 10 for second connecting rod 9 and third connecting rod 10 can not rotate through adapter sleeve 39 under the condition of non-manpower operation, increase stability.

In addition, the invention is a supporting device for surgical instruments, when in use, the chassis 1 is pushed to a position to be used through the rollers, the tray 13 is placed on the upper part of the bracket structure 12, and the surgical instruments can be placed in the tray 13;

in laparoscopic rectal surgery, because the lithotomy position needs to be placed on the operating bed, a doctor cannot conveniently take and place surgical instruments through the tray 13 supported by the underframe 1, at the moment, the inserting rod 6 can be installed on the stainless steel rail on the side edge of the operating bed by using the operating bed connecting structure 7, during operation, the stud 5 is rotated to separate the stud 5 from the inserting rod 6, the inserting rod 6 can be vertically pulled out of the loop bar 4 upwards to separate the underframe 1 from the inserting rod 6, then the clamping seat 16 is clamped outside the stainless steel rail on the side edge of the operating bed, the screw rod 15 is rotated, the screw rod 15 is tightly pressed on the outer side of the stainless steel rail of the operating bed through threads between the screw rod 15 and the fixed column 14, and therefore the inserting rod 6 is installed on the side surface of the operating bed;

in the operation process, the tray 13 is placed on the inner side of the bracket structure 12, the medical sterile sheet is laid on the upper portion of the tray 13, the four sides of the sterile sheet hang down for thirty centimeters, and then the surgical instrument is placed on the tray 13;

the rotating shaft 28 of the three adjusting structures 2, namely the inserted link 6 and the first link 8, the first link 8 and the second link 9, the third link 10 and the ejector rod 11, is manually pressed, the rotating shaft 28 pushes the external toothed disc 32 to enter the inner side of the first groove 31, the external toothed disc 32 is separated from the internal toothed disc 34 at the moment, the first link 8, the second link 9 and the third link 10 can rotate, meanwhile, the second link 9 and the third link 10 can rotate inside the connecting sleeve 39 through the limiting block 40, so that the angle and the position of the tray 13 are adjusted, after the rotating shaft 28 is loosened, the return spring 37 pushes the limiting disc 36 to move, so that the external toothed disc 32 is reset, the external toothed disc 32 is meshed with the internal toothed disc 34, the spring seat 30 is fixed in position, the guide groove 38 is connected with the guide rod 35 in a hexagonal structure, so that the rotating shaft 28 cannot rotate, the external toothed disc 32 cannot rotate, and after the external toothed disc 32 is meshed with the internal toothed disc 34, the first link 8, the second link 9 and the third link 10 cannot rotate, and the tray 13 is fixed in position;

when the amount of surgical instruments to be placed is large or the size of the surgical instruments is large, the trays 13 with different sizes need to be replaced, at this time, the placeable space of the bracket structure 12 can be adjusted through the expanding structure 21, the rotating handle outside the screw rod 25 is rotated during operation, the screw rod 25 pushes the two internal threaded rods 23 through the threads between the internal threaded rods 23 and simultaneously moves in the sleeve 24 in opposite or opposite directions, so that the two first angle rods 17 simultaneously move in opposite or opposite directions through the pulling rod 20, and the expanding structure 21 between the two end rods 19 is operated according to the method, so that the placeable space of the whole bracket structure 12 can be adjusted, and the tray 13 with different sizes can be placed.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides an apparatus supporting device is used in operation, includes chassis (1), first connecting rod (8), second connecting rod (9), third connecting rod (10) and ejector pin (11), its characterized in that: a ball seat (3) is installed on the upper portion of the underframe (1), a sleeve rod (4) is installed at a position vertically above the outer portion of the ball seat (3), an inserted link (6) is inserted into the sleeve rod (4), a stud (5) penetrates through a position vertically below the outer portion of the ball seat (3), and the stud (5) is in threaded connection with the inserted link (6);

an operating bed connecting structure (7) is arranged outside the inserted rod (6), the operating bed connecting structure (7) comprises a fixed column (14), the fixed column (14) is fixedly installed outside the inserted rod (6), a clamping seat (16) is fixedly installed at one end of the fixed column (14), a screw rod (15) penetrates through between the fixed column (14) and the clamping seat (16), the screw rod (15) is in threaded connection with a contact surface of the fixed column (14), and the clamping seat (16) is in a 'v' -shaped;

the inserted link (6), the first connecting rod (8), the second connecting rod (9), the third connecting rod (10) and the ejector rod (11) are sequentially connected, the inserted link (6) and the first connecting rod (8), the first connecting rod (8) and the second connecting rod (9), and the third connecting rod (10) and the ejector rod (11) are connected through the adjusting structure (2), and the second connecting rod (9) and the third connecting rod (10) are connected through a connecting sleeve (39);

the top end of the ejector rod (11) is provided with a bracket structure (12), and a tray (13) is placed on the inner side of the bracket structure (12).

2. The device for supporting surgical instruments according to claim 1, wherein: the underframe (1) consists of a '21274', a reinforcing cross rod, a reinforcing inclined rod and two vertical rods, wherein rollers are arranged at two ends of the '21274', and at the bottom ends of the two vertical rods, the reinforcing cross rod is arranged at the inner side of the '21274', and two ends of the reinforcing inclined rod are connected between the sleeve rod (4) and the reinforcing cross rod.

3. The device for supporting surgical instruments according to claim 1, wherein: bracket structure (12) include two first angle poles (17), two second angle poles (18), two end bar (19) are constituteed, two first angle pole (17), two second angle poles (18) and two end bar (19) are the rectangle and arrange, two first angle pole (17), two second angle pole (18) and two end bar (19) link are through taking out pole (20) and connecting.

4. The device for supporting surgical instruments according to claim 3, wherein: two all be equipped with extension structure (21) between first corner pole (17) and two end bars (19), extension structure (21) are including two knee poles (22), two internal thread pole (23), sleeve (24) and lead screw (25), two the outside at two first corner poles (17) is installed respectively in knee pole (22) is close to one end position, two internal thread pole (23) fixed connection is the one end of two knee poles (22) respectively, sleeve (24) cover is established between two internal thread pole (23), lead screw (25) run through the inside of two internal thread pole (23).

5. The device for supporting an instrument for surgery of claim 4 wherein: the middle of the sleeve (24) is provided with a notch close to the front position, the outer part of the screw rod (25) is provided with a rotating handle at the notch, the screw rod (25) is in threaded connection with the contact surfaces of the two inner threaded rods (23), and a reinforcing rod is arranged between the sleeve (24) and the ejector rod (11).

6. The device for supporting an instrument for surgery of claim 1 wherein: adjust structure (2) including dead slot (26), lug (27) and chucking structure (29), the top surface central point that establishes in inserted bar (6) puts in dead slot (26), the bottom central point at first connecting rod (8) is installed in lug (27), lug (27) and dead slot (26) are connected through pivot (28) rotation.

7. The device for supporting surgical instruments according to claim 6, wherein: chucking structure (29) include spring holder (30), spring holder (30) fixed mounting leans on the back position in the outside of inserted bar (6), first recess (31) have been seted up by the rear surface to the inner wall of dead slot (26), the externally mounted of pivot (28) has external tooth dish (32), second recess (33) have been seted up to the rear surface of lug (27), the internally mounted of second recess (33) has internal tooth dish (34), internal tooth dish (34) are connected with external tooth dish (32) meshing, first recess (31) and external tooth dish (32) adaptability match.

8. The device for supporting surgical instruments according to claim 7, wherein: the utility model discloses a spring seat, including pivot (28), spring seat (30), pivot (28), guide bar (35), pivot (35) and guide bar (38), the inside central point of spring seat (30) puts and installs guide bar (35), the internal connection that pivot (28) run through to spring seat (30) has spacing dish (36), the outside cover that the inside of spring seat (30) is located guide bar (35) is equipped with reset spring (37), guide slot (38) have been seted up with the contact surface of guide bar (35), guide bar (35) all are the hexagon structure with guide slot (38).

9. The device for supporting surgical instruments according to claim 1, wherein: the opposite ends of the second connecting rod (9) and the third connecting rod (10) are positioned in the connecting sleeve (39) and are connected with limiting blocks (40), and damping rubber pads (41) are arranged between the outer parts of the limiting blocks (40) and the connecting sleeve (39).

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