CN218045209U

CN218045209U - Brain spreader

Info

Publication number: CN218045209U
Application number: CN202221046354.6U
Authority: CN
Inventors: 翁玲玲; 石如霞; 史娟
Original assignee: Yanan University
Current assignee: Yanan University
Priority date: 2022-04-30
Filing date: 2022-04-30
Publication date: 2022-12-16
Anticipated expiration: 2032-04-30

Abstract

The utility model belongs to the field of medical equipment, a lead out convenient operation and easily fixable's brain struts ware is specifically disclosed. The brain distractor comprises a distraction mechanism and a supporting mechanism; the opening mechanism comprises a cross rod, a fixed support leg with the upper end fixedly arranged on the cross rod and a movable support leg with the upper end slidably arranged on the cross rod; the cross rod is provided with a rack, the movable supporting leg is rotatably provided with a gear meshed with the rack, and the axis of the gear is provided with a screwing part; the lower ends of the fixed supporting leg and the movable supporting leg are respectively provided with a drag hook; the supporting mechanism comprises a supporting rod and a fixing device, the upper end of the supporting rod is connected with the cross rod, and the fixing device is arranged at the lower end of the supporting rod. The gear rotates through the screwing part to drive the movable supporting leg, so that the control on the retracting force and the retracting distance between the drag hooks is facilitated, and the retracting operation is convenient; the brain spreader can be fixed on a sickbed or the spine of a patient through the fixing device, so that the fixation is stable and firm, and the smooth operation of the brain surgery is facilitated.

Description

Brain spreader

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to brain struts ware.

Background

Brain spreader is often used to retract brain tissue in brain surgery, most of the existing brain spreaders are of clamp-type structure, and doctors perform brain tissue retracting operation according to self experience. Because different forces are needed for retracting soft tissues with different thicknesses, if the retracting force is not enough, brain tissues are difficult to expose well, the operation can be influenced, and if the retracting force is too large, the brain tissues of a patient are easy to be damaged, so that the brain surgery operation performed by using the brain spreader with the structure usually requires abundant experience of doctors. Moreover, the brain distracter with the structure has the problems of unstable fixation or difficult fixation, which affects the operation and is not beneficial to the treatment of diseases.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provides the brain spreader which is convenient for retracting operation and easy to fix.

The utility model provides a technical scheme that its technical problem adopted is: the brain spreader comprises a spreading mechanism and a supporting mechanism; the opening mechanism comprises a fixed support leg, a movable support leg and a cross rod, the upper end of the fixed support leg is fixedly arranged on the cross rod, and the upper end of the movable support leg is slidably arranged on the cross rod; the transverse rod is provided with a rack along the axial direction, the movable supporting leg is rotatably provided with a gear meshed with the rack, and the axis of the gear is provided with a screwing part; the lower ends of the fixed supporting legs and the movable supporting legs correspond to each other and are respectively and detachably provided with a drag hook; the supporting mechanism comprises a supporting rod and a fixing device, the upper end of the supporting rod is connected with the cross rod, and the fixing device is arranged at the lower end of the supporting rod.

Further, the fixed support leg comprises an upper leg section, a middle leg section and a lower leg section, wherein one end of the upper leg section is connected with one end of the middle leg section through a positioning hinge, and the other end of the middle leg section is connected with one end of the lower leg section through a positioning hinge; the other end of the upper leg section is fixedly connected with the cross rod, and the other end of the lower leg section is detachably connected with the draw hook; the structure of the movable supporting leg is the same as that of the fixed supporting leg.

Furthermore, a stopping device capable of preventing the movable supporting leg from sliding relative to the cross rod is arranged on the movable supporting leg.

Furthermore, the fixed supporting leg and the movable supporting leg are both of snake-shaped arm structures; the stopping device is a bolt arranged at the upper end of the movable supporting leg, and the bolt can be inserted into a tooth groove of the rack to stop.

Furthermore, the surface of the cross rod is provided with scale marks for indicating the distance between the fixed supporting leg and the movable supporting leg, and the scale marks are arranged along the axial direction of the cross rod.

Further, the supporting rod is of a snake-shaped arm structure.

Furthermore, the upper end of the supporting rod is rotatably connected with one end of the cross rod, and a locking knob is arranged on the connecting part; the bracing piece is including connecting upper boom section and lower boom section as an organic whole, the contained angle between upper boom section and the lower boom section is the obtuse angle.

The fixing device comprises a fixed clamp body, a movable clamp body and a fixing screw rod, wherein a connecting table is arranged at the upper end of the fixed clamp body, the fixed clamp body is fixedly connected with the lower end of the supporting rod through the connecting table, the movable clamp body is rotatably connected with the connecting table at the upper end of the fixed clamp body through a hinge shaft, and the upper end of the movable clamp body exceeds the top of the connecting table; the top of the connecting table is provided with a screw rod seat, the fixed screw rod is in threaded connection with the screw rod seat, and the front end of the fixed screw rod penetrates out of the screw rod seat and is propped against the upper end of the movable clamp body; the lower end of the movable clamp body can move towards the fixed clamp body by screwing the fixing screw rod to increase the extension of the front end of the fixing screw rod.

Furthermore, the side surfaces of the fixed clamp body and the movable clamp body, which correspond to each other, are respectively provided with a claw nail.

Furthermore, a locking screw is arranged on the screw rod seat, and the front end of the locking screw can be pressed against a rod section of the fixing screw rod in the screw rod seat.

The utility model has the advantages that: the brain spreader enables the gear to rotate through the screwing part, the gear meshed with the rack is utilized to drive the movable supporting leg to move along the cross rod, the stroke of the movable supporting leg is controlled by the screwing part in the whole process, the retracting force and the retracting distance between the drag hooks are favorably controlled, the retracting force is uniform, the retracting distance is proper, and the retracting operation of brain tissues is convenient; the brain spreader can be fixed on a sickbed or the spine of a patient through the fixing device in the supporting mechanism, so that the fixation is stable and firm, and the smooth operation of the brain surgery is facilitated.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

labeled in the figure as: the support device comprises an opening mechanism 100, a fixed support leg 110, an upper leg section 111, a middle leg section 112, a lower leg section 113, a movable support leg 120, a gear 121, a screwing part 122, a stopping device 123, a cross rod 130, a rack 131, a scale mark 132, a draw hook 140, a support mechanism 200, a support rod 210, an upper rod section 211, a lower rod section 212, a fixing device 220, a fixed clamp body 221, a movable clamp body 222, a fixed screw 223, a hinge shaft 224, a screw seat 225, a claw nail 226, a locking screw 227 and a locking knob 230.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, the brain distractor comprises a distraction mechanism 100 and a support mechanism 200; the opening mechanism 100 comprises a fixed support leg 110, a movable support leg 120 and a cross bar 130, wherein the upper end of the fixed support leg 110 is fixedly arranged on the cross bar 130, and the upper end of the movable support leg 120 is slidably arranged on the cross bar 130; a rack 131 is arranged on the cross bar 130 along the axial direction thereof, a gear 121 meshed with the rack 131 is rotatably arranged on the movable supporting leg 120, and a screwing part 122 is arranged on the axis of the gear 121; the lower ends of the fixed supporting leg 110 and the movable supporting leg 120 correspond to each other and are respectively and detachably provided with a draw hook 140; the supporting mechanism 200 includes a supporting rod 210 and a fixing device 220, the upper end of the supporting rod 210 is connected to the cross bar 130, and the fixing device 220 is disposed at the lower end of the supporting rod 210.

Wherein the distraction mechanism 100 is primarily used to distract the brain tissue of the patient; when the fixed support leg 110 is arranged on the cross bar 130, the cross bar 130 is generally perpendicular to the plane of the fixed support leg 110; when the movable supporting leg 120 is disposed, the plane of the movable supporting leg 120 is generally parallel to the plane of the fixed supporting leg 110.

The structure of the fixed supporting leg 110 can be various, and in order to adjust the depth of the drag hook 140 into the brain tissue, the fixed supporting leg 110 is preferably the structure shown in fig. 3, that is, the fixed supporting leg 110 comprises an upper leg section 111, a middle leg section 112 and a lower leg section 113, one end of the upper leg section 111 is connected with one end of the middle leg section 112 through a positioning hinge, and the other end of the middle leg section 112 is connected with one end of the lower leg section 113 through a positioning hinge; the other end of the upper leg section 111 is fixedly connected to the cross bar 130, and the other end of the lower leg section 113 is detachably connected to the hook 140. Similarly, the structure of the movable supporting leg 120 is the same as that of the fixed supporting leg 110. The hinge joint enables relative rotation between the upper leg section 111 and the middle leg section 112, and between the middle leg section 112 and the lower leg section 113, and can be fixed at a specific position, preferably by using a multi-stage hinge joint which can be fixed at a plurality of specific positions. The fixed and

movable support legs

110, 120 may also preferably be serpentine arm structures.

The slidable arrangement of the movable supporting leg 120 on the cross bar 130 can be various, for example: the upper end of the movable support leg 120 is sleeved on the cross rod 130, the cross rod 130 is provided with a slide rail seat, the upper end of the movable support leg 120 is arranged on the slide rail seat, the cross rod 130 is provided with a slide groove along the axial direction thereof, the upper end of the movable support leg 120 is arranged in the slide groove, and the like.

In order to avoid the effect of accidental sliding of the movable supporting leg 120 on the smooth operation during the operation, as shown in fig. 1, a stopper 123 capable of preventing the movable supporting leg 120 and the cross bar 130 from sliding relatively is disposed on the movable supporting leg 120. The stop means 123 can be implemented in various ways, for example: push-button stops, screw-threaded screws that can be pressed against the cross bar 130, etc.; preferably, the structure shown in fig. 1 and 2 is that the stopping means 123 is a pin provided at the upper end of the movable supporting leg 120, and the pin can be inserted into the tooth groove of the rack 131 for stopping.

In order to accurately control the retracting distance between the pulling hooks 140, as shown in fig. 2, the surface of the cross bar 130 is provided with a scale line 132 for indicating the distance between the fixed leg 110 and the movable leg 120, and the scale line 132 is disposed along the axial direction of the cross bar 130.

The supporting mechanism 200 is used for supporting and fixing the brain distractor; the support rod 210 generally comprises an upper rod section 211 and a lower rod section 212 which are connected into a whole, and the included angle between the upper rod section 211 and the lower rod section 212 is an obtuse angle; the support rods 210 are preferably serpentine arm structures. The securing device 220 may be various, for example: seat-type fixing devices, clip-type fixing devices and the like. To facilitate adjustment of the position of distractor mechanism 100, the upper end of support rod 210 is typically pivotally connected to one end of cross-bar 130. In order to prevent the connection portion from being unintentionally rotated, the upper end of the support rod 210 is generally connected to one end of the cross bar 130 by a set hinge, or a locking knob 230 is provided at the connection portion, as shown in fig. 1 and 3.

As a preferred scheme of the present invention, as shown in fig. 1 and fig. 3, the fixing device 220 includes a fixed clamp 221, a movable clamp 222 and a fixing screw 223, a connecting platform is disposed at the upper end of the fixed clamp 221, the fixed clamp 221 is fixedly connected to the lower end of the supporting rod 210 through the connecting platform, the movable clamp 222 is rotatably connected to the connecting platform at the upper end of the fixed clamp 221 through a hinge 224, and the upper end of the movable clamp 222 exceeds the top of the connecting platform; a screw seat 225 is arranged on the top of the connecting platform, a fixed screw 223 is in threaded connection with the screw seat 225, and the front end of the fixed screw 223 penetrates out of the screw seat 225 and is propped against the upper end of the movable clamp body 222; the lower end of the movable clamp body 222 can be moved toward the fixed clamp body 221 by increasing the protrusion amount of the front end of the fixing screw 223 by screwing.

In addition, in order to further improve the clamping and fixing effect, the fixed clamp body 221 and the movable clamp body 222 are respectively provided with claw nails 226 on the corresponding side surfaces.

In order to avoid the clamping instability caused by the loosening of the fixing screw 223 due to over-long clamping time or collision, as shown in fig. 1, a locking screw 227 is arranged on the screw seat 225, and the front end of the locking screw 227 can press against the rod section of the fixing screw 223 in the screw seat 225. After the fixed screw 223 is adjusted to clamp and fix the fixed clamp body 221 and the movable clamp body 222, the locking screw 227 is screwed to press the fixed screw 223 against the fixed screw 223, so that the fixed screw 223 is prevented from being loosened accidentally.

Claims

1. Brain struts ware, its characterized in that: comprises a strutting mechanism (100) and a supporting mechanism (200); the opening mechanism (100) comprises a fixed supporting leg (110), a movable supporting leg (120) and a cross rod (130), the upper end of the fixed supporting leg (110) is fixedly arranged on the cross rod (130), and the upper end of the movable supporting leg (120) is slidably arranged on the cross rod (130); a rack (131) is arranged on the cross rod (130) along the axial direction of the cross rod, a gear (121) meshed with the rack (131) is rotatably arranged on the movable supporting leg (120), and a screwing part (122) is arranged on the axis of the gear (121); the lower end of the fixed supporting leg (110) and the lower end of the movable supporting leg (120) correspond to each other and are respectively and detachably provided with a draw hook (140); the supporting mechanism (200) comprises a supporting rod (210) and a fixing device (220), the upper end of the supporting rod (210) is connected with the cross rod (130), and the fixing device (220) is arranged at the lower end of the supporting rod (210).

2. The brain distractor of claim 1, wherein: the fixed supporting leg (110) comprises an upper leg section (111), a middle leg section (112) and a lower leg section (113), one end of the upper leg section (111) is connected with one end of the middle leg section (112) through a positioning hinge, and the other end of the middle leg section (112) is connected with one end of the lower leg section (113) through a positioning hinge; the other end of the upper leg section (111) is fixedly connected with a cross rod (130), and the other end of the lower leg section (113) is detachably connected with a draw hook (140); the structure of the movable supporting leg (120) is the same as that of the fixed supporting leg (110).

3. The brain distractor of claim 1, wherein: the movable supporting leg (120) is provided with a stop device (123) which can prevent the movable supporting leg (120) and the cross rod (130) from sliding relatively.

4. The brain distractor of claim 3, wherein: the fixed supporting leg (110) and the movable supporting leg (120) are both in a snake-shaped arm structure; the stop device (123) is a plug pin arranged at the upper end of the movable supporting leg (120), and the plug pin can be inserted into a tooth groove of the rack (131) for stopping.

5. The brain distractor of claim 1, wherein: the surface of the cross rod (130) is provided with scale marks (132) used for indicating the distance between the fixed supporting leg (110) and the movable supporting leg (120), and the scale marks (132) are arranged along the axial direction of the cross rod (130).

6. The brain distractor of claim 1, wherein: the support rod (210) is of a snake-shaped arm structure.

7. The brain distractor of claim 1, wherein: the upper end of the supporting rod (210) is rotatably connected with one end of the cross rod (130), and a locking knob (230) is arranged on the connecting part; the support rod (210) comprises an upper rod section (211) and a lower rod section (212) which are connected into a whole, and an included angle between the upper rod section (211) and the lower rod section (212) is an obtuse angle.

8. The brain distractor of claims 1, 2, 3, 4, 5, 6, or 7, wherein: the fixing device (220) comprises a fixed clamp body (221), a movable clamp body (222) and a fixing screw rod (223), a connecting table is arranged at the upper end of the fixed clamp body (221), the fixed clamp body (221) is fixedly connected with the lower end of the supporting rod (210) through the connecting table, the movable clamp body (222) is rotatably connected with the connecting table at the upper end of the fixed clamp body (221) through a hinge shaft (224), and the upper end of the movable clamp body (222) exceeds the top of the connecting table; the top of the connecting table is provided with a screw rod seat (225), the fixed screw rod (223) is in threaded connection with the screw rod seat (225), and the front end of the fixed screw rod (223) penetrates out of the screw rod seat (225) and is propped against the upper end of the movable clamp body (222); the lower end of the movable clamp body (222) can be moved toward the fixed clamp body (221) by increasing the amount of protrusion of the front end of the fixing screw (223) by screwing the fixing screw.

9. The brain distractor of claim 8, wherein: the side surfaces of the fixed clamp body (221) and the movable clamp body (222) which correspond to each other are respectively provided with a claw nail (226).

10. The brain distractor of claim 8, wherein: and a locking screw (227) is arranged on the screw rod seat (225), and the front end of the locking screw (227) can be pressed against a rod section of the fixing screw rod (223) in the screw rod seat (225).