CN218045209U - brain spreader - Google Patents

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, in particular to a brain spreader.

Background technique

Brain retractors are often used in brain surgery to retract brain tissue. Most of the currently used brain retractors are clamp-type retractors. Doctors perform brain tissue retraction operations based on their own experience. Different strengths are required to retract soft tissues of different thicknesses. If the strength of retraction is not enough, it is difficult to expose the brain tissue well, which will affect the surgical operation. If the strength of retraction is too large, it is easy to cause damage to the brain tissue of the patient. , therefore utilize the brain spreader of above-mentioned structure to carry out brain surgery and often require doctor to have abundant experience. Moreover, the brain spreader with the above structure has the problem of unstable or difficult fixation, which affects the operation and is unfavorable for the treatment of diseases.

Utility model content

The technical problem to be solved by the utility model is to provide a brain spreader which is easy to operate and fix.

The technical solution adopted by the utility model to solve the technical problems is: a brain stretcher, including a stretching mechanism and a supporting mechanism; The upper end of the movable support leg is fixedly arranged on the cross bar, and the upper end of the movable support leg is slidably arranged on the cross bar; The gear meshed with the rack, the axis of the gear is provided with a screw part; the lower end of the fixed support leg and the lower end of the movable support leg correspond to each other and are respectively detachably provided with a drag hook; the support The mechanism includes a support rod and a fixing device, the upper end of the support rod is connected with the cross bar, and the fixing device is arranged at the lower end of the support rod.

Further, the fixed leg includes an upper leg section, a middle leg section and a lower leg section, one end of the upper leg section is connected to one end of the middle leg section through a positioning hinge, and the other end of the middle leg section is positioned by The hinge is connected with one end of the lower leg section; the other end of the upper leg section is fixedly connected with the cross bar, and the other end of the lower leg section is detachably connected with the drag hook; the structure of the movable support leg is consistent with that of the fixed support leg. The structure is the same.

Further, the moving support leg is provided with a stop device that can prevent the moving support leg from sliding relative to the cross bar.

Further, both the fixed leg and the movable leg are of serpentine arm structure; the stop device is a pin arranged on the upper end of the movable leg, and the pin can be inserted into the tooth slot of the rack to stop.

Further, the surface of the cross bar is provided with a scale line for indicating the distance between the fixed leg and the movable leg, and the scale line is arranged along the axial direction of the cross bar.

Further, the support rod is a serpentine arm structure.

Further, the upper end of the support rod is rotatably connected to one end of the cross bar, and a locking knob is provided on the connecting part; the support rod includes an upper rod section and a lower rod section connected as one, so The included angle between the upper pole section and the lower pole section is an obtuse angle.

Further, the fixing device includes a fixed clamp body, a movable clamp body and a fixed screw rod, the upper end of the fixed clamp body is provided with a connecting platform, the fixed clamp body is fixedly connected with the lower end of the support rod through the connecting platform, and the movable clamp body The body is rotatably connected to the connection platform at the upper end of the fixed clamp body through the hinge shaft, and the upper end of the movable clamp body exceeds the top of the connection platform; a screw seat is provided on the top of the connection platform, and the fixed screw is threadedly connected to the screw seat. And the front end of the fixed screw rod passes through the screw rod seat and pushes against the upper end of the movable clamp body; by screwing the fixed screw rod, the protruding amount of the front end is increased, so that the lower end of the movable clamp body can move toward the fixed clamp body.

Further, nails are respectively provided on the sides corresponding to each other of the fixed clip body and the movable clip body.

Further, the screw seat is provided with a locking screw, and the front end of the locking screw can press against the section of the fixing screw located in the screw seat.

The beneficial effects of the utility model are: the brain spreader rotates the gear through the screw part, and the gear meshed with the rack is used to drive the moving leg to move along the cross bar. The twisting part is controlled, which is beneficial to control the retracting force and retracting distance between the retractors, so that the retracting force is uniform, the retracting distance is appropriate, and the retracting operation of the brain tissue is convenient; the brain tissue can be retracted through the fixing device in the supporting mechanism. The external spreader is fixed on the hospital bed or the patient's spine, and the fixation is stable and reliable, which is beneficial to the smooth progress of the brain surgery.

Description of drawings

Fig. 1 is the implementation structural representation of the utility model;

Fig. 2 is a sectional view along line A-A in Fig. 1;

Fig. 3 is the right view of Fig. 1;

Marked in the figure: stretching mechanism 100, fixed support leg 110, upper leg section 111, middle leg section 112, lower leg section 113, dynamic support leg 120, gear 121, screw part 122, stop device 123, cross bar 130, tooth bar 131, scale line 132, drag hook 140, support mechanism 200, support bar 210, upper bar section 211, lower bar section 212, fixture 220, fixed clip body 221, moving clip body 222 and fixed screw rod 223, hinge Shaft 224, screw seat 225, claw nail 226, locking screw 227, locking knob 230.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, Figure 2 and Figure 3, the brain spreader includes a spreader mechanism 100 and a support mechanism 200; the spreader mechanism 100 includes a fixed leg 110, a movable leg 120 and a cross bar 130, and the fixed leg The upper end of 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; There is a gear 121 meshing with the rack 131, and a screw part 122 is arranged on the axis of the gear 121; the lower end of the fixed leg 110 and the lower end of the movable leg 120 correspond to each other and are respectively detachably provided with a drag 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 with the cross bar 130 , and the fixing device 220 is arranged at the lower end of the supporting rod 210 .

Among them, the stretching mechanism 100 is mainly used to retract the brain tissue of the patient; when the fixed leg 110 is set on the cross bar 130, generally the plane where the cross bar 130 and the fixed leg 110 are located is kept vertical; When 120, generally the plane where the movable leg 120 is located is kept parallel to the plane where the fixed leg 110 is located.

The structure of the fixed support leg 110 can be various, in order to facilitate the adjustment of the degree of penetration of the retractor 140 into the brain tissue, the fixed support leg 110 is preferably the structure shown in Figure 3, that is, the fixed support leg 110 includes an upper leg section 111, a middle part Leg section 112 and lower leg section 113, one end of upper leg section 111 is connected with one end of middle part leg section 112 through positioning hinge, and the other end of middle part leg section 112 is connected with one end of lower part leg section 113 through positioning hinge; The other end of the lower leg section 113 is fixedly connected with the cross bar 130 , and the other end of the lower leg section 113 is detachably connected with the drag hook 140 . Similarly, the structure of the movable leg 120 is the same as that of the fixed leg 110 . The 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 can be made by positioning hinge hinges and can be fixed at a specific position, preferably fixed at multiple specific positions. The multi-level positioning hinge is hinged. The fixed leg 110 and the movable leg 120 may also preferably have a serpentine arm structure.

The slidable arrangement of the movable support 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 bar 130, a slide rail with a slide rail seat is set on the cross bar 130 and The upper end of the movable support leg 120 is arranged on the slide rail seat, the slide groove is arranged on the cross bar 130 along its axial direction and the upper end of the movable support leg 120 is arranged in the slide groove, etc.

In order to avoid the accidental sliding of the movable leg 120 during the operation and affect the smooth progress of the operation, as shown in FIG. The stopping device 123 can have multiple implementations, for example: a button-type stopper, a screw that can be pressed against the cross bar 130, etc.; preferably the structure shown in Figure 1 and Figure 2, that is, the stopping device 123 The bolt is arranged on the upper end of the movable support leg 120, and the bolt can be inserted into the tooth groove of the rack 131 to stop.

In order to accurately control the retracting distance between the pull hooks 140, as shown in FIG. Axial arrangement of the crossbar 130 .

The support mechanism 200 is used to support and fix the brain spreader; the support rod 210 generally includes an upper rod segment 211 and a lower rod segment 212 connected as one, and the angle between the upper rod segment 211 and the lower rod segment 212 is an obtuse angle; The support rod 210 is preferably a serpentine arm structure. The fixing device 220 can be of various types, for example: a seat-type fixing device, a clip-type fixing device, and the like. In order to adjust the position of the spreading mechanism 100 conveniently, usually the upper end of the support rod 210 is rotatably connected to one end of the cross bar 130 . In order to avoid accidental rotation of the connection part, the upper end of the support rod 210 is generally connected to one end of the cross bar 130 through a positioning hinge, or a locking knob 230 is provided on the connection part, as shown in FIGS. 1 and 3 .

As a preferred solution of the present utility model, as shown in Fig. 1 and Fig. 3, the fixing device 220 includes a fixed clip body 221, a movable clip body 222 and a fixed screw rod 223, and the upper end of the fixed clip body 221 is provided with a connecting platform, and the fixed clip body 221 is provided with a connecting platform. The body 221 is fixedly connected with the lower end of the support rod 210 through the connection platform, and the movable clamp body 222 is rotationally connected with the connection platform at the upper end of the fixed clamp body 221 through the hinge shaft 224, and the upper end of the movable clamp body 222 exceeds the top of the connection platform; The top is provided with a screw seat 225, and the fixed screw 223 is threadedly connected on the screw seat 225, and the front end of the fixed screw 223 passes through the screw seat 225 and pushes against the upper end of the movable clamp body 222; by screwing the fixed screw 223, it The protruding amount of the front end increases, which can make the lower end of the movable clip body 222 move toward the fixed clip body 221 .

On the basis of the above, in order to further improve the clamping and fixing effect, claw nails 226 are respectively provided on the sides corresponding to each other of the fixed clip body 221 and the movable clip body 222 .

In order to avoid the clamping time being too long or the fixing screw 223 being loosened by collision, resulting in unstable clamping and fixing, as shown in Figure 1, a locking screw 227 is arranged on the screw seat 225, and the front end of the locking screw 227 can be pressed against the fixing screw. The screw rod 223 is located on the rod segment in the screw rod seat 225 . After adjusting the fixing screw 223 so that the fixed clip body 221 and the movable clip body 222 are clamped and fixed, the locking screw 227 is screwed to press the fixing screw 223 to prevent the fixing screw 223 from loosening accidentally.

Claims (10)

1. The brain spreader is characterized in that: it comprises a spreading mechanism (100) and a supporting mechanism (200); the spreading mechanism (100) comprises a fixed leg (110), a movable leg (120) and Rod (130), 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 rod (130) along its axial direction, and a gear (121) meshing with the rack (131) is rotatably arranged on the movable support leg (120), and the gear (121) ) is provided with a screw part (122) on the axis; the lower end of the fixed support leg (110) and the lower end of the movable support leg (120) correspond to each other and are respectively 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 bar (130), and the fixing device (220) is arranged on the supporting rod (210). the lower end. 2. The brain spreader according to claim 1, characterized in that: said fixed leg (110) comprises an upper leg section (111), a middle leg section (112) and a lower leg section (113), the One end of the upper leg section (111) is connected to one end of the middle leg section (112) through a positioning hinge, and the other end of the middle leg section (112) is connected to 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 drag hook (140); the structure of the movable support leg (120) is consistent with The structure of the fixed support legs (110) is the same. 3. The brain stretcher according to claim 1, characterized in that: the moving support leg (120) is provided with a stop device that can prevent the moving support leg (120) from sliding relative to the cross bar (130) (123). 4. The brain spreader according to claim 3, characterized in that: the fixed leg (110) and the movable leg (120) are snake-shaped arm structures; the stopper (123) is A bolt arranged on the upper end of the movable support leg (120), the bolt can be inserted into the tooth groove of the rack (131) to stop. 5. The brain spreader according to claim 1, characterized in that: the surface of the cross bar (130) is provided with a mark for indicating the distance between the fixed leg (110) and the movable leg (120). A scale line (132), the scale line (132) is arranged along the axial direction of the cross bar (130). 6. The brain spreader according to claim 1, characterized in that: the support rod (210) is a serpentine arm structure. 7. The brain spreader according to claim 1, characterized in that: the upper end of the support rod (210) is rotatably connected to one end of the cross bar (130), and a lock is provided on the connecting part Tighten the knob (230); the support rod (210) includes an upper bar section (211) and a lower bar section (212) connected as one, and the upper bar section (211) and the lower bar section (212) The included angle is an obtuse angle. 8. The brain spreader as claimed in claim 1, 2, 3, 4, 5, 6 or 7, characterized in that: the fixing device (220) comprises a fixed clip body (221), a movable clip body ( 222) and a fixed screw rod (223), the upper end of the fixed clip body (221) is provided with a connection platform, and the fixed clip body (221) is fixedly connected with the lower end of the support rod (210) through the connection platform, and the movable clip body ( 222) is rotatably connected with the connection platform on the upper end of the fixed clamp body (221) through the hinge shaft (224), and the upper end of the movable clamp body (222) exceeds the top of the connection platform; the top of the connection platform is provided with a screw seat (225 ), the fixed screw (223) is threadedly connected to the screw seat (225), and the front end of the fixed screw (223) passes through the screw seat (225) and pushes against the upper end of the movable clamp body (222); by screwing Twist the fixed screw rod (223) to increase the stretching amount of its front end, so that the lower end of the moving clamp body (222) can be moved towards the fixed clamp body (221). 9. The brain spreader according to claim 8, characterized in that claw nails (226) are respectively arranged on the sides corresponding to each other of the fixed clip body (221) and the movable clip body (222). 10. The brain spreader according to claim 8, characterized in that: the screw seat (225) is provided with a locking screw (227), and the front end of the locking screw (227) can be pressed against the fixing screw (227). 223) is located on the rod section in the screw seat (225).

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