CN217285881U - Surgical retractor - Google Patents

Abstract

The present application relates to a surgical retractor. The surgical retractor comprises: the support frame comprises a first support plate, a second support plate, a third support plate and a fourth support plate which are sequentially connected end to end; the connecting rod is connected with the first supporting plate in a sliding way; the tongue blocking structure comprises a tongue adjusting component and a tongue blade, the tongue adjusting component is connected with one end of the connecting rod, and the tongue adjusting component drives the tongue blade to move; the cheek blocking structure comprises a cheek adjusting assembly and cheek blades, the cheek adjusting assembly drives the cheek blades to move, the number of the cheek blocking structures is two, the cheek adjusting assembly of the first cheek blocking structure is slidably arranged on the second support plate, and the cheek adjusting assembly of the second cheek blocking structure is slidably arranged on the fourth support plate; tooth portion blocks structure, including tooth portion adjusting part and tooth portion blade, tooth portion adjusting part is used for locking tooth portion blade in the third backup pad. The operation retractor has a wide adjustment range and is convenient to use in an operation.

Description

Operation retractor

Technical Field

The application relates to the field of medical equipment, in particular to a surgical retractor.

Background

The oral pharynx approach is widely applied to the upper cervical vertebra operation, in particular to the operation of difficult type atlantoaxial dislocation and the like. In the operation, retrograde pedicle screws, lateral mass screws or occipital condyle screws and the like may be needed for internal fixation, and due to the complex anatomical structure of the craniocorvical junction area and the adjacent key structures of vertebral artery, cervical marrow and the like, the navigation-assisted lower nail placement of the surgical robot can ensure higher accuracy and safety. At present, cervical vertebra navigation is mainly based on image guidance of cone beam CT, images of a craniocervical junction area in an operation need to be acquired in the first step of surgical navigation, and in order to achieve high precision, relative rigidity and stability of a bony structure need to be kept. Based on this basic need, there is a need for a transoral-pharyngeal retractor to keep the mouth open and retract the tongue, pharynx, lips, cheeks, etc. so that surgical instruments can access the front of the cranio-cervical junction. The existing oral retractor is special for oral surgery, has relatively limited drawing depth and range, and is difficult to meet the requirements of upper cervical vertebra surgery.

SUMMERY OF THE UTILITY MODEL

Based on the above problems, the present application provides a surgical retractor, which has a large adjustable range and meets the requirements of surgery.

One embodiment of the present application provides a surgical retractor comprising: the support frame comprises a first support plate, a second support plate, a third support plate and a fourth support plate which are sequentially connected end to end; the connecting rod is connected with the first supporting plate in a sliding way; the tongue blocking structure comprises a tongue adjusting component and a tongue blade, the tongue adjusting component is connected with one end of the connecting rod, and the tongue adjusting component drives the tongue blade to move; a first cheek blocking structure and a second cheek blocking structure, each of the first and second cheek blocking structures including a cheek adjustment assembly and a cheek vane, the cheek adjustment assembly moving the cheek vane, wherein the cheek adjustment assembly of the first cheek blocking structure is slidably disposed on the second support plate and the cheek adjustment assembly of the second cheek blocking structure is slidably disposed on the fourth support plate; tooth portion blocks structure, including tooth portion adjusting part and tooth portion blade, tooth portion adjusting part be used for with tooth portion blade locking is in on the third backup pad.

According to some embodiments of the application, the bottom surface of the first support plate is provided with a sleeve through which the connecting rod passes, the surgical retractor further comprises a driving structure for driving the support frame to move relative to the connecting rod.

According to some embodiments of the application, the connecting rod includes first through-hole, be equipped with on the lateral wall of connecting rod with the guiding hole of first through-hole intercommunication, drive structure includes: the first rack is slidably arranged in the first through hole, and one end, close to the tongue blocking structure, of the first rack is provided with a first threaded hole; the first gear shaft is rotatably arranged on the connecting rod and comprises a gear matched with the first rack; and the first bolt penetrates through the first support plate and the sleeve to be connected with the first threaded hole of the first rack.

According to some embodiments of the present application, the surgical retractor further comprises a locking structure comprising: the locking base is arranged on the outer wall of the connecting rod; the adjusting rod is hinged with the locking base; the guide post is arranged on the outer wall of the connecting rod; the elastic piece is sleeved on the guide post, one end of the elastic piece is abutted to the connecting rod, the other end of the elastic piece is abutted to one end of the adjusting rod, and the elastic piece can push the adjusting rod to be clamped into the first rack.

According to some embodiments of the present application, the tongue adjustment assembly comprises: the tongue base is arranged at one end of the connecting rod; the tongue swinging seat is hinged with the tongue base; the adjusting column is arranged on the tongue base in a sliding mode and is hinged with the tongue swinging seat; the adjusting nut is in threaded connection with the adjusting column, and the adjusting column can be driven to slide relative to the tongue base by rotating the adjusting nut so as to enable the tongue swinging seat to swing; the second rack is arranged on the tongue swinging seat in a sliding way, and the tongue blade is connected with the second rack; and the second gear shaft is rotatably arranged on the tongue swinging seat and comprises a gear matched with the second rack.

According to some embodiments of the present application, a cheek adjustment assembly includes: a cheek base, wherein the cheek base of the first cheek stop arrangement is slidably disposed on the second support plate and the cheek base of the second cheek stop arrangement is slidably disposed on the fourth support plate; a cheek swing seat hinged to the cheek base, the cheek blade being connected to the cheek swing seat; and the cheek knob is in threaded connection with the cheek base, one end of the cheek knob is hinged to the cheek swinging seat, and the cheek swinging seat can be driven to swing by rotating the cheek knob.

According to some embodiments of the present application, the dental adjustment assembly comprises: the tooth part knob is rotatably arranged on the third supporting plate; the pressing sheet is in threaded connection with the tooth part knob, the tooth part blades are arranged between the third supporting plate and the pressing sheet, the tooth part knob is rotated, and the pressing sheet can compress the tooth part blades.

According to some embodiments of the present application, the surgical retractor further comprises a tracer fixation structure slidably disposed on the support frame, the tracer fixation structure for connecting a tracer.

According to some embodiments of the application, the tracer fixation structure comprises: the tracer base is arranged on the supporting frame in a sliding manner; the tracer swinging seat is hinged with the tracer base and is used for connecting a tracer; the tracer knob set up in on the tracer base, the tracer knob can lock tracer swing seat.

According to some embodiments of the application, an end of the connecting rod remote from the tongue blocking structure is provided with an interface for connecting a driven arm.

The application discloses operation retractor, tongue block structure, cheek block structure and tooth block structure all can carry out adjustment on a large scale, satisfies the demand of operation. The surgical retractor can provide stable traction for the oral cavity structure, and is favorable for performing an operation.

Drawings

In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on these drawings without exceeding the protection scope of the present application.

FIG. 1 is a first schematic view of a surgical retractor according to an embodiment of the present application;

FIG. 2 is a schematic view of a support stand according to an embodiment of the present application;

FIG. 3 is a second schematic view of a surgical retractor according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a drive configuration of an embodiment of the present application;

FIG. 5 is an exploded view of the drive configuration of the embodiment of the present application;

FIG. 6 is a schematic view of a first bolt of an embodiment of the present application;

FIG. 7 is a schematic view of a locking mechanism of an embodiment of the present application;

FIG. 8 is a cross-sectional view of a locking structure of an embodiment of the present application;

FIG. 9 is a schematic view of a tongue blocking structure according to an embodiment of the present application;

FIG. 10 is an exploded view of a tongue barrier structure according to an embodiment of the present application;

FIG. 11 is a schematic view of a tongue swing seat according to an embodiment of the present application;

FIG. 12 is a schematic view of a cheek stop arrangement according to an embodiment of the present disclosure;

fig. 13 is an exploded view of a cheek blocking structure according to an embodiment of the present application;

FIG. 14 is a schematic view of a cheek swing mount according to an embodiment of the present disclosure;

FIG. 15 is a schematic view of a dental barrier structure according to an embodiment of the present application;

FIG. 16 is an exploded view of a dental barrier structure according to an embodiment of the present application;

FIG. 17 is a schematic view of a tracer mounting structure according to an embodiment of the application;

FIG. 18 is an exploded view of a tracer mounting structure according to an embodiment of the application;

FIG. 19 is a cross-sectional view of a tracer base according to an embodiment of the application;

FIG. 20 is a schematic view of an interface of a connecting rod according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, not all, of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1, the present embodiment provides a surgical retractor 100, and the surgical retractor 100 includes a support frame 1, a connecting rod 2, a tongue blocking structure 3, a cheek blocking structure 4, and a tooth blocking structure 5. The surgical retractor 100 is used to retract the oral cavity to facilitate the performance of surgery.

As shown in fig. 2, the support stand 1 includes a first support plate 11, a second support plate 12, a third support plate 13 and a fourth support plate 14 which are connected end to end in sequence. The first support plate 11 and the third support plate 13 are arranged substantially in parallel, the second support plate 12 and the fourth support plate 14 are arranged substantially in parallel, and the support frame 1 is a substantially rectangular frame.

Connecting rod 2 is the tubular structure, and connecting rod 2 is connected with first backup pad 11 slidable. Wherein the axis of the connecting rod 2 is substantially perpendicular to the extension direction of the first support plate 11. The support frame 1 can move relative to the connecting rod 2 parallel to the axis of the connecting rod 2, and the support frame 1 and the connecting rod 2 can be kept relatively still after the support frame 1 moves to a proper position.

As shown in fig. 1, the tongue blocking structure 3 includes a tongue adjustment assembly 31 and a tongue vane 32. The tongue adjusting component 31 is arranged at one end of the connecting rod 2, the tongue adjusting component 31 is positioned in the space defined by the support frame 1, and the tongue adjusting component 31 can drive the tongue blade 32 to move. In this embodiment, the tongue adjustment assembly 31 can drive the tongue blade 32 to move up and down and swing around an axis parallel to the first support plate 11. The tongue vane 32 is used for pressing the tongue of the patient, and the tongue adjustment assembly 31 drives the tongue vane 32 to move, so that the tongue vane 32 can better press the tongue of the patient.

The cheek stop structure 4 includes a cheek adjustment assembly 41 and cheek vanes 42. The cheek adjustment assembly 41 is capable of moving the cheek blades 42. In this embodiment, the number of the cheek blocking structures 4 is two, the cheek adjusting component 41 of the first cheek blocking structure is slidably disposed on the second support plate 12, and the cheek adjusting component 41 of the second cheek blocking structure is slidably disposed on the fourth support plate 14. The cheek adjustment assembly 41 of the first cheek blocking structure can drive the cheek blade 42 of the first cheek blocking structure to swing around an axis substantially parallel to the second support plate 12, and the cheek adjustment assembly 41 of the second cheek blocking structure can drive the cheek blade 42 of the second cheek blocking structure to swing around an axis substantially parallel to the fourth support plate 14. The buccal vanes 42 of the two buccal barrier structures 4 serve to cradle the patient's cheek.

The dental blocking structure 5 includes a dental adjustment assembly 51 and a dental vane 52, the dental adjustment assembly 51 being used to lock the dental vane 52 to the third support plate 13. The dental vanes 52 are used to support the patient's teeth. In this embodiment, the tooth blocking structure 5 is disposed at the center of the third supporting plate 13, and the center portion 131 of the third supporting plate 13 is recessed toward the first supporting plate 11, so that the tooth blocking structure 5 can support the teeth of the patient more conveniently.

The surgical retractor 100 of this embodiment, put into the oral cavity with surgical retractor 100 during the use, the relative position of adjustment support frame 1 and connecting rod 2 adjusts tongue barrier structure 3, cheek barrier structure 4 and tooth barrier structure 5 according to the circumstances, struts patient's oral cavity, is connected connecting rod 2 and passive arm, provides the support for surgical retractor 100. Tongue blocks that structure 3, cheek blocks that structure 4 and tooth block that structure 5 all can carry out adjustment on a relatively large scale to carry out the tractive to the oral cavity inner structure, for the operation provides sufficient space, satisfy the demand of operation.

As shown in fig. 3, according to an alternative embodiment of the present invention, the bottom surface of the first support plate 11 is provided with a sleeve 15, and the axis of the sleeve 15 is substantially perpendicular to the extending direction of the first support plate 11. One end of the connecting tongue blocking structure 3 of the connecting rod 2 passes through the sleeve 15. The surgical retractor 100 further comprises a drive structure 6, the drive structure 6 being adapted to drive the support 1 in a movement relative to the connecting stick 2 such that the tongue blocking structure 3 moves relative to the support 1 along the axis of the connecting stick 2 to adjust the position of the tongue blade 32.

Optionally, the tongue blade 32, the cheek blade 42, and the tooth blade 52 of the present embodiment are all made of transparent materials, and have certain flexibility, so that the tongue blade, the cheek blade 42, and the tooth blade are not easy to damage, and can transmit light and protect soft tissues.

As shown in fig. 4 and 5, according to an alternative solution of the present application, the driving structure 6 includes a first rack 61, a first gear shaft 62 and a first bolt 63.

The connecting rod 2 comprises a first through hole 21 extending along the axis of the connecting rod 2, and a guide hole 22 and a shaft hole 23 communicated with the first through hole 21 are arranged on the side wall of the connecting rod 2. The guide hole 22 is an oblong hole, and the long side of the guide hole 22 extends parallel to the axis of the connecting rod 2. The axis of the shaft hole 23 is perpendicular to the axis of the connecting rod 2.

The first rack 61 is slidably disposed in the first through hole 21 parallel to the axis of the connecting rod 2. The upper and lower surfaces of the first rack 61 are provided with sequentially arranged latch teeth. In this embodiment, one end of the first rack 61 close to the tongue blocking structure 3 is provided with a cylindrical sliding block 611, and the sliding block 611 is in clearance fit with the first through hole 21, so that the first rack 61 can slide in the first through hole 21. The slider 611 is provided with a first threaded hole 612.

The first gear shaft 62 is rotatably disposed on the connecting rod 2 through the shaft hole 23, and the first gear shaft 62 includes a gear 621 fitted to the first rack 61. The gear 621 is disposed in the first through hole 21 and located below the first rack 61. Rotating the first gear shaft 62 can cause the first rack 61 to slide parallel to the axis of the connecting rod 2.

The first bolt 63 is coupled to the first screw hole 612 of the first rack 61 through the through hole 111 of the first support plate 11, the through hole 151 of the sleeve 15, and the guide hole 22 of the connecting rod 2. When the first rack 61 slides parallel to the axis of the connecting rod 2, the support frame 1 can be driven to slide relative to the connecting rod 2.

As shown in fig. 6, the first bolt 63 includes a hand portion 631 and a screw portion 632, an external thread is provided on an outer wall of the screw portion 632, a diameter of the hand portion 631 is larger than a diameter of the through hole 111 of the first support plate 11, and the screw portion 632 can pass through the through hole 111 of the first support plate 11. After the first bolt 63 is connected with the first threaded hole 612 of the first rack 61, the first bolt 63 is screwed, the relative position of the connecting rod 2 and the support frame 1 is fixed, the first bolt 63 is unscrewed, and the connecting rod 2 and the support frame 1 can move relatively.

As shown in fig. 1, 7 and 8, according to an alternative embodiment of the present application, surgical retractor 100 further comprises a locking structure 7. The lock structure 7 includes: a lock base 71, an adjustment lever 72, a guide post 73, and an elastic member 74.

A lock base 71 is provided on the outer wall of the connecting rod 2, the lock base 71 being located outside the end of the guide hole 22 remote from the tongue blocking structure 3. The middle portion of the adjustment lever 72 is hinged to the lock base 71. In this embodiment, the adjustment lever 72 is approximately L-shaped, and the horizontal portion of the adjustment lever 72 is hinged to the lock base 71. The guide post 73 is provided on the outer wall of the connecting rod 2, and the guide post 73 is located below the adjustment lever 72. The elastic member 74 is fitted over the guide post 73, the elastic member 74 of this embodiment is a spring, one end of the elastic member 74 abuts against the connecting rod 2, and the other end of the elastic member 74 abuts against one end of the horizontal portion of the adjustment lever 72. The elastic member 74 can push the adjustment lever 72 to rotate so that the vertical portion of the adjustment lever 72 is caught in the catch of the first rack 61.

When one end of the adjusting rod 72 close to the elastic piece 74 is pressed, the vertical part of the adjusting rod 7 moves upwards, the adjusting rod 7 leaves the first rack 61, and the first rack 61 can slide. One end of the adjusting rod 72 close to the elastic piece 74 is loosened, the elastic piece 74 pushes the adjusting rod 7 to rotate, and the vertical part of the adjusting rod 7 is clamped into the clamping teeth of the first rack 61 to limit the sliding of the first rack 61. Locking structure 7 can play supplementary locking effect to the slip of first rack 61, avoids first bolt 63 not to screw up, and makes connecting rod 2 and support frame 1 appear unnecessary relative movement, and the reinforcing is to the fixed between connecting rod 2 and the support frame 1.

As shown in fig. 9, according to an alternative embodiment of the present application, the tongue adjustment assembly 31 includes a tongue base 311, a tongue swinging seat 312, an adjustment post 313, an adjustment nut 314, a second rack 315, and a second gear shaft 316.

As shown in fig. 10, the tongue base 311 is U-shaped as a whole and has a rectangular space 3111 inside. The bottom of the tongue base 311 is provided with a shaft hole 3112, and the axis of the shaft hole 3112 is substantially parallel to the extending direction of the first support plate 11. Two opposite vertical portions of the tongue base 311 are provided with through holes 3113, the axis of the through holes 3113 being substantially parallel to the axis of the tie bar 2. The top of the inner wall of the through-hole 3113 is provided with a guide block 3114.

As shown in fig. 10 and 11, the bottom of the tongue swinging seat 312 is provided with a shaft hole 3121, and the rotating shaft 317 passes through the shaft hole 3112 of the tongue base 311 and the shaft hole 3121 of the tongue swinging seat 312, so as to realize the hinge joint between the tongue swinging seat 312 and the tongue base 311. The top surface of the tongue swinging seat 312 is provided with a blind hole 3122, and the wall of the blind hole 3122 close to the tongue base 311 is provided with a gap. A guide groove 3123 penetrating vertically is provided on a side wall of the tongue portion swing seat 312 away from the tongue portion base 311, and the guide groove 3123 is a T-shaped groove. A gear shaft hole 3124 is formed on a side wall of the tongue portion swing seat 312, and the side wall where the gear shaft hole 3124 is located is perpendicular to the side wall where the guide groove 3123 is located. The gear shaft hole 3124 communicates with the guide groove 3123.

One end of the adjusting column 313 is provided with a ball 3131, the side wall of the adjusting column 313 is provided with a guide groove 3132, and the guide groove 3132 extends parallel to the axis of the adjusting column 313. Adjustment post 313 passes through aperture 3113 of tongue base 311 and is slidably coupled to tongue base 311. The guide block 3114 of the tongue base 311 is located in the guide groove 3132 of the adjustment post 313 to guide the sliding movement of the adjustment post 313. Ball 3131 of adjustment post 313 is seated in blind hole 3122 of tongue swing seat 312, enabling articulation of adjustment post 313 with tongue swing seat 312. The adjusting post 313 slides along the axis of the adjusting post 313 to drive the swing of the tongue swing seat 312. The outer wall of the adjusting column 313 is provided with external threads.

The center of the adjusting nut 314 is provided with a threaded hole 3141 matched with the external thread of the adjusting column 313. The adjusting nut 314 is located in the rectangular space 3111 of the tongue base 311. Turning the adjustment nut 314, the threaded connection of the adjustment nut 314 to the adjustment post 313 translates rotation of the adjustment nut 314 into sliding movement of the adjustment post 313 relative to the tongue base 311. The sliding of the adjustment post 313 causes the swinging of the tongue swing seat 312.

The second rack gear 315 is slidably disposed in the guide groove 3123 of the tongue swinging seat 312, and the second rack gear 315 can only slide up and down along the guide groove 3123. The surface of the second rack 315 near the bottom surface of the guide groove 3123 is provided with a latch. The tongue vane 32 is provided on the surface of the second rack 315 remote from the bottom surface of the guide groove 3123. Optionally, the tongue vane 32 is removably connected to the second rack 315 to allow for replacement of different sized tongue vanes 32 depending on the patient's condition.

The second gear shaft 316 includes a gear 3161 and a hand portion 3162 at an end of the gear 3161, the hand portion 3162 having a diameter larger than a diameter of the gear shaft hole 3124 of the tongue swinging seat 312. The gear 3161 of the second gear shaft 316 penetrates into the gear shaft hole 3124, and the gear 3161 is fitted with the latch of the second rack 315. The second gear shaft 316 is rotated by the handle 3162, so that the second rack 315 is driven to move up and down, and the tongue blade 32 is driven to move up and down.

In the tongue adjustment assembly 31 of this embodiment, the adjustment nut 314 is rotated to drive the tongue blade 32 to swing around the rotating shaft 317, and the second gear shaft 316 is rotated to drive the tongue blade 32 to move up and down, so that the surgical staff can adjust the tongue blade 32 conveniently.

As shown in fig. 12 and 13, the cheek adjustment assembly 41 includes: a cheek base 411, a cheek swing seat 412, and a cheek knob 413.

The side wall of the cheek base 411 is provided with a guide groove 4111, and the guide groove 4111 is substantially U-shaped. The guide grooves 4111 penetrate both side walls of the cheek seat 411. The bottom surface of the guide groove 4111 is provided with a threaded hole 4112. A projection is arranged above the guide groove 4111, and a shaft hole 4113 is arranged on the projection. A threaded hole 4114 is provided above the projection, and an axis of the threaded hole 4114 points to the cheek swing seat 412. The cheek base 411 is slidably disposed on the supporting frame 1 through the guiding groove 4111. The locking screw 414 is fitted into the threaded hole 4112, and tightening the locking screw 414 locks the cheek base 411 to the support frame 1.

Wherein, the cheek base 411 of the first cheek stop structure is slidably disposed on the second support plate 12, and the cheek base 411 of the second cheek stop structure is slidably disposed on the fourth support plate 14.

As shown in fig. 13 and 14, the top surface of the cheek swing seat 412 is provided with a through hole 4121, in this embodiment, the through hole 4121 is a rectangular hole, and the wall of the through hole 4121 close to the cheek base 411 is provided with a notch. A locking groove 4122 is formed on a side wall of the cheek swing seat 412, and the locking groove 4122 penetrates the top and bottom surfaces of the cheek swing seat 412. A rotating shaft 415 is disposed on a side wall of the cheek swing seat 412 close to the cheek base 411, and the rotating shaft 415 penetrates into the shaft hole 4113 of the cheek base 411, so as to realize the hinge joint between the cheek swing seat 412 and the cheek base 411. The cheek leaves 42 are detachably coupled to the cheek swing seat 412 through the catching groove 4122, so that the cheek leaves 42 can be easily replaced according to the condition of the patient.

The outer wall of the cheek knob 413 is provided with an external thread adapted to the threaded hole 4114 of the cheek base 411. One end of the cheek knob 413 is provided with a flange 4131, the flange 4131 passes through the threaded hole 4114 and the gap of the cheek swing seat 412, and the flange 4131 is positioned in the through hole 4121 of the cheek swing seat 412 to realize the hinge joint of the cheek knob 413 and the cheek swing seat 412. When the cheek knob 413 is rotated, since the cheek knob 413 is screwed to the cheek base 411, the cheek knob 413 moves along the axis of the cheek knob 413, and the movement of the cheek knob 413 drives the cheek swing seat 412 to swing, thereby driving the cheek blades 42 to swing around the rotating shaft 415. The cheek paddles 42 swing into position, spreading the patient's cheeks apart.

As shown in fig. 15 and 16, the dental adjustment assembly 51 includes: a dental knob 511 and a press plate 512.

The central portion of the third support plate 13 is provided with a through hole 132, and the axis of the through hole 132 is substantially parallel to the axis of the connecting rod 2. The tooth knob 511 is rotatably disposed on the third support plate 13 through the through hole 132.

The pressing plate 512 is approximately U-shaped, and a threaded hole 5121 corresponding to the through hole 132 is formed in the pressing plate 512. Clamping grooves 5122 are formed in two sides of the pressing piece 512, and the pressing piece 512 is movably arranged on the third supporting plate 13 through the clamping grooves 5122. The tooth knob 511 is screwed with the screw hole 5121 of the pressing piece 512.

The top of the tooth blade 52 is provided with a notch 521, and the notch 521 is matched with the tooth knob 511. When the tooth knob 511 is located in the notch 521, the tooth knob 511 is rotated to drive the pressing sheet 512 to press the tooth blades 52. The teeth knob 511 is unscrewed, and the angle of the teeth blades 52 can be properly adjusted, so that the teeth blades 52 can better support the teeth of the patient.

As shown in fig. 1, the surgical retractor 100 further comprises a tracer fixing structure 8, the tracer fixing structure 8 is slidably disposed on the supporting frame 1, and the tracer fixing structure 8 is used for connecting a tracer. Install the tracer on operation retractor 100 through tracer fixed knot constructs 8, operation personnel accessible navigation system fixes a position operation retractor 100, improves operation efficiency.

As shown in fig. 17 and 18, according to an alternative solution of the present application, the tracer-holder structure 8 comprises: a tracer base 81, a tracer swing mount 82, and a tracer knob 83.

As shown in fig. 18 and 19, a guide groove 811 is provided on a side wall of the tracer base 81, and a screw hole 812 is provided on a bottom surface of the guide groove 811. The top surface of tracer base 81 is equipped with draw-in groove 813, and the bottom surface of tracer base 81 is equipped with screw hole 814, and screw hole 814 and draw-in groove 813 intercommunication. The tracer base 81 is slidably disposed on the fourth support plate 14 of the support stand 1 through the guide groove 811. The locking screws 84 are fitted into the threaded holes 812, and tightening of the locking screws 84 locks the tracer base 81 to the fourth support plate 14.

The top end of the tracer swinging seat 82 is provided with a clamping groove 821, and the clamping groove 821 is used for being connected with the tracer. The bottom end of the tracer swinging seat 82 is provided with a ball head 822, and the ball head 822 is rotatably clamped in a clamping groove 813 of the tracer base 81. By rotating the tracer swinging seat 82, the direction of the tracer can be adjusted, and the tracer can be conveniently identified by a navigation system.

The tracer knob 83 is matched with the threaded hole 814 of the tracer base 81, the tracer knob 83 is screwed, and the tracer knob 83 presses the ball head 822 of the tracer swinging seat 82 to limit the rotation of the tracer swinging seat 82.

As shown in fig. 20, the end of the connecting rod 2 remote from the tongue blocking structure 3 is provided with an interface 24 for connecting the passive arm. The connecting rod 2 is connected with the passive arm through the interface 24, and plays a supporting role for the surgical retractor 100.

Steps of using the surgical retractor 100 of the present embodiment:

1. the appropriate tongue blade 32, buccal blade 42 and dental blade 52 are selected according to the patient's condition.

2. The surgical retractor 100 is placed in the mouth of a patient and the relative position of the connecting rod 2 and the support frame 1 is adjusted by the driving structure 6.

3. The lingual, buccal and dental leaflets 32, 42, 52, respectively, are adjusted into position to distract the patient's mouth and then the lingual, buccal and dental leaflets 32, 42, 52, respectively, are secured.

4. The tracer is mounted on the tracer mounting structure 8.

5. The connecting rod 2 is connected to the passive arm.

The embodiments of the present application are described in detail above. The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the technical solutions and the core ideas of the present application. Therefore, the person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of protection of the present application. In view of the above, the description should not be taken as limiting the application.

Claims (10)

1. A surgical retractor, comprising:

the support frame comprises a first support plate, a second support plate, a third support plate and a fourth support plate which are sequentially connected end to end;

the connecting rod is connected with the first supporting plate in a sliding way;

the tongue blocking structure comprises a tongue adjusting component and a tongue blade, the tongue adjusting component is connected with one end of the connecting rod, and the tongue adjusting component drives the tongue blade to move;

a first cheek blocking structure and a second cheek blocking structure, each of the first and second cheek blocking structures including a cheek adjustment assembly and a cheek vane, the cheek adjustment assembly moving the cheek vane, wherein the cheek adjustment assembly of the first cheek blocking structure is slidably disposed on the second support plate and the cheek adjustment assembly of the second cheek blocking structure is slidably disposed on the fourth support plate;

tooth portion blocks structure, including tooth portion adjusting part and tooth portion blade, tooth portion adjusting part be used for with tooth portion blade locking is in on the third backup pad.

2. A surgical retractor as claimed in claim 1, wherein the bottom surface of the first support plate is provided with a sleeve through which the connecting rod passes, the surgical retractor further comprising: and the driving structure is used for driving the support frame to move relative to the connecting rod.

3. A surgical retractor according to claim 2, wherein said connecting rod includes a first through hole, a guide hole communicating with said first through hole is provided on a side wall of said connecting rod, and said driving structure includes:

the first rack is slidably arranged in the first through hole, and one end, close to the tongue blocking structure, of the first rack is provided with a first threaded hole;

the first gear shaft is rotatably arranged on the connecting rod and comprises a gear matched with the first rack;

and the first bolt penetrates through the first supporting plate and the sleeve to be connected with the first threaded hole of the first rack.

4. The surgical retractor of claim 3, further comprising a locking structure, the locking structure comprising:

the locking base is arranged on the outer wall of the connecting rod;

the adjusting rod is hinged with the locking base;

the guide post is arranged on the outer wall of the connecting rod;

the elastic piece is sleeved on the guide post, one end of the elastic piece is abutted to the connecting rod, the other end of the elastic piece is abutted to one end of the adjusting rod, and the elastic piece can push the adjusting rod to be clamped into the first rack.

5. The surgical retractor of claim 1, wherein said tongue adjustment assembly comprises:

the tongue base is arranged at one end of the connecting rod;

the tongue swinging seat is hinged with the tongue base;

the adjusting column is arranged on the tongue base in a sliding mode and is hinged with the tongue swinging seat;

the adjusting nut is in threaded connection with the adjusting column, and the adjusting column can be driven to slide relative to the tongue base by rotating the adjusting nut so as to enable the tongue swinging seat to swing;

the second rack is arranged on the tongue swinging seat in a sliding mode, and the tongue blade is connected with the second rack;

and the second gear shaft is rotatably arranged on the tongue swinging seat and comprises a gear matched with the second rack.

6. The surgical retractor of claim 1, wherein said cheek adjustment assembly comprises:

a cheek base, wherein the cheek base of the first cheek stop arrangement is slidably disposed on the second support plate and the cheek base of the second cheek stop arrangement is slidably disposed on the fourth support plate;

a cheek swing seat hinged to the cheek base, the cheek blade being connected to the cheek swing seat;

and the cheek knob is in threaded connection with the cheek base, one end of the cheek knob is hinged to the cheek swinging seat, and the cheek swinging seat can be driven to swing by rotating the cheek knob.

7. The surgical retractor of claim 1, wherein the tooth adjustment assembly comprises:

the tooth part knob is rotatably arranged on the third supporting plate;

the pressing sheet is in threaded connection with the tooth part knob, the tooth part blades are arranged between the third supporting plate and the pressing sheet, the tooth part knob is rotated, and the pressing sheet can compress the tooth part blades.

8. A surgical retractor as recited in claim 1, further comprising a tracer fixation structure slidably disposed on the support frame, the tracer fixation structure configured to couple with a tracer.

9. The surgical retractor of claim 8, wherein said tracer fixation structure comprises:

the tracer base is arranged on the supporting frame in a sliding manner;

the tracer swinging seat is hinged with the tracer base and is used for connecting a tracer;

the tracer knob set up in on the tracer base, the tracer knob can lock tracer swing seat.

10. A surgical retractor according to claim 1, wherein an end of the connecting rod remote from the tongue blocking structure is provided with an interface for connecting a driven arm.

Images