Orthopedic dilator

Abstract

The utility model discloses a dilator for the orthopedics department. Comprise a left clamp body and a right clamp body, a protruding rectangular groove is formed in the middle of the right clamp body, the left clamp body is a groove rectangular block, and the protruding rectangular block is embedded into the groove and connected with the groove through a rotating shaft; a right spring piece is fixed on the inner side of the tail end of the right clamp, a rectangular opening is formed in the front end of the right spring piece, a left spring piece is fixed on the inner side of the tail end of the left clamp, and a rectangular strip is arranged at the front end of the left spring piece and inserted into the rectangular opening in the front end of the right spring piece; two lugs are arranged on the inner side of the tail end of the left clamp, and a rack is fixed between the two lugs through a pin shaft. The front ends of the left clamp and the right clamp are both in a conical strip shape, a rectangular groove is formed in the inner side face of the front end of the left clamp, when the spreader is closed, the front end of the right clamp enters the rectangular groove of the left clamp, and after the spreader is closed, the overall width of the front end is the width of the front end of the left clamp. The rear end of the left spring piece is inserted in the lower side of a rack fixed at the tail end of the left clamp, so that the rack is perpendicular to the center line of the spreader. The tail end of the right clamp is in a sharp tooth shape, and tooth tips are kept to be inserted into tooth grooves in the rack.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to a kind of orthopedics spreader. BACKGROUND

[0002] The existing orthopedics spreader, due to the front end insertion between vertebral arch screw can be spreaded part is wider, in some patients and children surgery, orthopedics spreader does not go in. The utility model provides a kind of orthopedics spreader, can solve this problem. CONTENT OF UTILITY MODEL

[0003] The main purpose of the utility model is to provide a kind of orthopedics spreader, to effectively solve the problem raised in the background art.

[0004] To achieve the above object, the utility model takes the following technical scheme: a kind of orthopedics spreader, including left pincers, right pincers, right pincers middle is equipped with a convex rectangular groove, left pincers middle has a convex rectangle, and the convex rectangle is embedded in the groove with pivot connection;Right pincers end inside is fixed with a right spring piece bending to middle with fixed pin, and the front end of right spring piece is provided with a rectangular hole;Left pincers end inside is fixed with a left spring piece bending to middle with fixed pin, and the front end of left spring piece is provided with a rectangular strip and is inserted in the rectangular hole of the front end of right spring piece;Left pincers end inside is also provided with a lug, and the lug middle is a groove, and a rack is rotatably fixed in the groove with pin shaft;And the tooth groove of rack is arranged on the side surface towards left pincers.

[0005] Preferably, the front end of left pincers and right pincers is conical strip, and a rectangular groove perpendicular to the inner side surface of the front end of left pincers and right pincers is arranged on the inner side surface opposite to the front end of right pincers, and the overall width of the front end of right pincers is less than the width of the rectangular groove of left pincers, when the spreader is closed, the front end of right pincers enters the rectangular groove of left pincers, and the front ends of the two are combined into one, the overall width of the front end after the spreader is closed is the width of the front end of left pincers, and the overall width is reduced, which is convenient for inserting between vertebral arch screw with narrow distance during surgery.

[0006] Preferably, the front end of left pincers is 3CM long and 2CM wide, and the front end of right pincers is 2CM long and 1CM wide, and the thickness is 1-2MM.

[0007] Preferably, the rear end of left spring piece is inserted below the rack fixed at the end of left pincers, and the elastic force is applied to the rack, so that the rack remains perpendicular to the center line of the spreader.

[0008] Preferably, the end of right pincers is tine-shaped, and the tooth tip remains inserted in the tooth groove on the rack.

[0009] The utility model has the beneficial effects that: when the spreader is closed, the front end of right pincers enters the rectangular groove of the front end of left pincers and combines into one, effectively reduces the overall width of the front end, and is convenient for application to special patients and children surgery. BRIEF DESCRIPTION OF DRAWINGS

[0010] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is a perspective view of the utility model.

[0011] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is a front view of the utility model.

[0012] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is a perspective view of the left forceps of the utility model.

[0013] BRIEF DESCRIPTION OF DRAWINGS Figure 4 It is a perspective view of the right forceps of the utility model.

[0014] BRIEF DESCRIPTION OF DRAWINGS Figure 1 In figure 4, right forceps 1, right spring piece 2, pivot 3, left spring piece 4, left forceps 5, rack 6, fixed pin 7, right forceps front end 8, rectangular groove 9. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0016] BRIEF DESCRIPTION OF DRAWINGS Figure 1 As shown in figure 4, it comprises left forceps 5 and right forceps 1, the middle of right forceps 1 is provided with a convex rectangular groove, the middle of left forceps is provided with a rectangular block, the convex rectangular block is embedded in the groove and connected by pivot 3;

[0017] The inner side of the end of right forceps is fixed with a right spring piece 2 bending to the middle by fixed pin 7, the front end of right spring piece 2 is provided with a rectangular hole, the inner side of the end of left forceps is fixed with a left spring piece 4 bending to the middle by fixed pin 7, the front end of left spring piece 4 is provided with a rectangular strip inserted in the rectangular hole in the front end of right spring piece 2;

[0018] The inner side of the end of left forceps 5 is further provided with a lug, the middle of the lug is a groove, a rack 6 is rotatably fixed in the groove by a pin shaft, the teeth groove of rack 6 is arranged on the side surface facing the direction of left forceps.

[0019] Preferably, the front end of left forceps 5 and right forceps 1 is a tapered strip, a rectangular groove 9 perpendicular to the inner side surface of the front end of left forceps 5 and right forceps 1 is arranged on the inner side surface opposite to each other, the overall width of right forceps front end 8 is less than the width of rectangular groove 9 of left forceps 5, when the dilator is closed, right forceps front end 8 enters rectangular groove 9 of left forceps 5, the front ends of the two are combined into one, the overall width of the front end after the dilator is closed is the width of the front end of left forceps 5, the overall width is reduced, which is convenient for inserting between the pedicle screws with narrow distance during operation.

[0020] Preferably, the left tongs front end is 3CM long and 2CM wide, and the right tongs front end is 2cm long and 1cm wide, and the thickness is 1-2mm. It is narrow in front and wide in back.

[0021] Preferably, the left spring sheet 4 rear end is inserted into the lower side of the rack 6 fixed at the left tongs end, and the elastic force is applied to the rack 6, so that the rack keeps vertical to the middle line of the spreader.

[0022] Preferably, the right tongs end is pointed, and the tooth tip keeps inserted into the tooth groove on the rack 6.

[0023] The beneficial effect of the utility model is that when the spreader is closed, the right tongs front end enters the rectangular groove of the left tongs front end and becomes one, effectively reducing the overall width of the front end, and facilitating application to special patients and children surgery.

[0024] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An orthopedic retractor, characterized in that: It includes a left clamp and a right clamp. The right clamp has a raised rectangular groove in the middle, and the left clamp has a rectangular groove in the middle. The raised rectangular block is embedded in the groove and connected by a pivot. A right spring plate that bends inward is fixed to the inner side of the end of the right clamp with a fixing pin. The front end of the right spring plate has a rectangular hole. A left spring plate that bends inward is fixed to the inner side of the end of the left clamp with a fixing pin. The front end of the left spring plate has a rectangular strip that is inserted into the rectangular hole at the front end of the right spring plate. The inner side of the end of the left clamp also has a lug with a groove in the middle. A rack is rotatably fixed in the groove with a pin. The tooth groove of the rack is located on the side facing the left clamp.

2. The orthopedic retractor according to claim 1, characterized in that: Both the left and right clamps have tapered strips at their front ends. A rectangular groove perpendicular to the inner surface of the front end of the left clamp and the front end of the right clamp is provided. The overall width of the front end of the right clamp is smaller than the width of the rectangular groove of the left clamp. When the spreader is closed, the front end of the right clamp enters the rectangular groove of the left clamp, and the front ends of the two clamps are combined into one. After the spreader is closed, the overall width of the front end is the width of the front end of the left clamp.

3. The orthopedic retractor according to claim 1, characterized in that: The left clamp has a front end that is 3cm long and 2cm wide, while the right clamp has a front end that is 2cm long and 1cm wide. Both clamps are 1-2mm thick.

4. The orthopedic retractor according to claim 1, characterized in that: The rear end of the left spring plate is inserted into the lower side of the rack fixed at the end of the left clamp, and the spring force is applied to the rack to keep the rack perpendicular to the center line of the spreader.

5. The orthopedic retractor according to claim 1, characterized in that: The right clamp has pointed teeth at the end, with the tips of the teeth inserted into the grooves on the rack.

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