Vertebral plate drag hook used in lumbar vertebra open surgery

Abstract

The utility model discloses a vertebral plate retractor for lumbar vertebra open surgery, which relates to the technical field of medical instruments and comprises a vertebral plate fixing plate and a retractor plate, an adjusting component is arranged between the vertebral plate fixing plate and the retractor plate, and the adjusting component is used for adjusting the overall length of the vertebral plate retractor; the lower surface of the vertebral plate fixing plate is fixedly connected with a first positioning binding block, and the lower surface of the vertebral plate fixing plate is fixedly connected with two first side binding blocks. According to the vertebral plate retractor, the adjusting assembly is arranged in the middle of the vertebral plate retractor, the adjusting inserting plate on the surface of the vertebral plate fixing plate can move in the adjusting sliding groove in the surface of the retractor plate, the position of the adjusting inserting plate is positioned through the adjusting bolt, and therefore the overall length of the vertebral plate retractor can be flexibly adjusted; the vertebral plate retractor can be used in different opening sizes, vertebral plate retractors with different lengths do not need to be replaced, and the application range of the vertebral plate retractor is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially relates to a kind of lamina retractor for lumbar open operation. BACKGROUND

[0002] In lumbar open operation, lamina retractor is commonly used surgical instrument, for lifting and fixed lamina, so that surgeon operates.

[0003] The patent document with the publication number CN208524924U discloses a double-fork lamina retractor, the utility model discloses a double-fork lamina retractor, which comprises an L-shaped retractor main body, the L-shaped retractor main body is a flat plate structure, an arc-shaped bent plate is arranged at one end of the L-shaped retractor main body, the inner arc surface of the arc-shaped bent plate faces the horizontal plane where the horizontal plate of the L-shaped retractor main body is located, and the arc-shaped bent plate and the horizontal plate of the L-shaped retractor main body are staggered with respect to the vertical plate of the L-shaped retractor main body; when in use, the double-fork can be straddled at the base of the transverse process to expose the surgical field well, making it easier to use and requiring less force, and preventing transverse process fracture.

[0004] The lamina retractor disclosed in the above patent document and the lamina retractor in the prior art are both fixed structures, have poor adjustability, cannot adjust the length, cannot be used for different opening sizes, and have certain difficulty and inconvenience when placing the pedicle screw. Therefore, it is necessary to improve the lamina retractor to improve the surgical efficiency and accuracy. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of lamina retractor for lumbar open operation to solve the problems raised in the above background.

[0006] A kind of lamina retractor for lumbar open operation, including lamina fixed plate and retractor plate, adjusting assembly is arranged between the lamina fixed plate and retractor plate, and the adjusting assembly is used to adjust the overall length of lamina retractor;

[0007] The lower surface of the lamina fixed plate is fixedly connected with a first positioning block, and the lower surface of the lamina fixed plate is fixedly connected with two first side blocks, the lower surface of the retractor plate is fixedly connected with two second side blocks, and the lower surface of the retractor plate is fixedly connected with a second positioning block.

[0008] Preferably, the adjusting assembly comprises an adjusting plugboard fixedly connected to the right side of the lamina fixed plate, the left side of the retractor plate is provided with an adjusting sliding groove, and the size of the adjusting sliding groove is matched with the adjusting plugboard.

[0009] Preferably, the adjusting plugboard is inserted and installed in the inner wall of the adjusting sliding groove, the upper surface of the retractor plate is provided with a positioning bolt hole, and the inner wall of the positioning bolt hole is threadedly connected with an adjusting bolt.

[0010] Preferably, the upper surface of the adjusting plugboard is provided with a plurality of positioning adjusting grooves, the plurality of positioning adjusting grooves are evenly distributed in a linear array on the surface of the adjusting plugboard, and the size of the positioning adjusting grooves is matched with the adjusting bolt.

[0011] Preferably, the right side of the drag hook plate is fixedly connected with a bent hook plate, and the surface of the bent hook plate is provided with two screw holes.

[0012] Preferably, the left end of the lamina plate fixing plate is fixedly connected with a sharp block, and the surface of the lamina plate fixing plate is provided with a fixing hole, and the fixing hole is located close to the sharp block.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] By setting the adjusting assembly in the middle part of the lamina drag hook, the adjusting plugboard on the surface of the lamina plate fixing plate can be moved in the adjusting sliding groove on the surface of the drag hook plate, and the position of the adjusting plugboard is positioned by the adjusting bolt, so that the overall length of the lamina drag hook can be flexibly adjusted, different opening sizes can be met, different length lamina drag hooks do not need to be replaced, and the application range of the lamina drag hook is improved.

[0015] By setting the first positioning block and the second positioning block at the bottom of the lamina drag hook, the first positioning block and the second positioning block can be directly inserted into the outer edge of the lamina bone cutting surface, the stability of the lamina drag hook is improved, and by setting the first side block and the second side block, the first side block and the second side block can be directly inserted into the arbitrary bone surface of the side block according to the actual lamina forming opening angle and distance, the lamina drag hook is fixed, and the fixing effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A front view structural schematic diagram of a lamina drag hook for lumbar open surgery is provided for the utility model.

[0017] Figure 2 A whole structure schematic diagram of a lamina drag hook for lumbar open surgery is provided for the utility model.

[0018] Figure 3 A bottom structure schematic diagram of a lamina drag hook for lumbar open surgery is provided for the utility model.

[0019] Figure 4 A partial front view structural schematic diagram of a lamina drag hook for lumbar open surgery is provided for the utility model.

[0020] In the figure: 1, lamina fixation plate; 101, sharp block; 102, fixing hole; 2, retractor plate; 201, curved plate hook; 202, screw hole; 3, adjusting assembly; 301, adjusting insert plate; 302, adjusting sliding slot; 303, positioning bolt hole; 304, adjusting bolt; 305, positioning adjusting slot; 4, first positioning block; 5, first side block; 6, second side block; 7, second positioning block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described below in conjunction with specific embodiments and the accompanying drawings. Figures 1-4 The technical solutions in the embodiments of the utility model will be described below in conjunction with specific embodiments and the accompanying drawings.

[0022] Referring to the drawings Figure 1 and Figure 2 A lamina retractor for lumbar open surgery includes a lamina fixation plate 1 and a retractor plate 2. An adjusting assembly 3 is arranged between the lamina fixation plate 1 and the retractor plate 2, and the adjusting assembly 3 is used to adjust the overall length of the lamina retractor.

[0023] It should be noted that the lower surface of the lamina fixation plate 1 is fixedly connected with a first positioning block 4, and the lower surface of the lamina fixation plate 1 is fixedly connected with two first side blocks 5. The lower surface of the retractor plate 2 is fixedly connected with two second side blocks 6, and the lower surface of the retractor plate 2 is fixedly connected with a second positioning block 7.

[0024] It should be noted that the first positioning block 4 and the second positioning block 7 are arranged at the bottom of the lamina retractor, and the first positioning block 4 and the second positioning block 7 can be directly inserted into the outer edge of the lamina osteotomy surface, thereby improving the stability of the lamina retractor. The first side block 5 and the second side block 6 are arranged at the two sides of the bottom of the lamina retractor, and the first side block 5 and the second side block 6 can be directly inserted into the arbitrary bone surface of the lateral mass according to the actual lamina forming angle and distance, thereby fixing the lamina retractor and further improving the fixing effect.

[0025] It should be noted that the right side of the retractor plate 2 is fixedly connected with a curved plate hook 201, and the surface of the curved plate hook 201 is provided with two screw holes 202. The one side of the retractor plate 2 is provided with the curved plate hook 201, and the curved plate hook 201 is designed in a cylindrical or conical shape, so as to facilitate the placement of the pedicle screw in the surgery.

[0026] It should be noted that the lamina retractor is made of medical stainless steel, titanium alloy or other biocompatible materials, and one side of the retractor is designed in a cylindrical or conical shape. The specific size and shape are determined according to actual needs, and the operation is convenient. The cylindrical or conical retractor part can better adapt to the shape of the lamina, and provide more stable support and fixation.

[0027] The left end of the lamina fixation plate 1 is fixedly connected with a sharp block 101, and a fixing hole 102 is arranged on the surface of the lamina fixation plate 1, and the fixing hole 102 is located close to the sharp block 101, and the sharp block 101 is arranged to fix the lamina and improve the stability.

[0028] With reference to Figure 3 and Figure 4 In a preferred embodiment, the adjusting assembly 3 comprises an adjusting plate 301 fixedly connected to the right side of the lamina fixation plate 1, and an adjusting slot 302 is arranged on the left side of the hook plate 2, and the adjusting slot 302 is matched with the adjusting plate 301 in size.

[0029] It should be noted that the adjusting plate 301 is inserted and installed on the inner wall of the adjusting slot 302, and a positioning bolt hole 303 is arranged on the upper surface of the hook plate 2, and the inner wall of the positioning bolt hole 303 is threadedly connected with an adjusting bolt 304.

[0030] It should be noted that the upper surface of the adjusting plate 301 is provided with a plurality of positioning adjusting grooves 305, and the plurality of positioning adjusting grooves 305 are evenly distributed on the surface of the adjusting plate 301 in a straight line array, and the positioning adjusting grooves 305 are matched with the adjusting bolt 304 in size.

[0031] It should be noted that the adjusting assembly 3 is arranged on the middle part of the lamina hook, and when the overall length of the lamina hook needs to be adjusted, the adjusting plate 301 on the surface of the lamina fixation plate 1 can be moved in the adjusting slot 302 on the surface of the hook plate 2, the distance between the lamina fixation plate 1 and the hook plate 2 is adjusted, and then the adjusting bolt 304 is screwed into the positioning adjusting groove 305 on the surface of the adjusting plate 301, so that the position of the adjusting plate 301 is positioned, the overall length of the lamina hook is flexibly adjusted, the use of different opening sizes can be met, different length lamina hooks do not need to be replaced, and the application range of the lamina hook is improved.

[0032] In addition to the technical features described in the specification, they are known to those skilled in the art.

[0033] In the utility model, "upper", "lower", "left", "right", "front", "rear" are relative positions for the convenience of describing the positional relationship, and therefore cannot be understood as absolute positions for limiting the protection scope.

[0034] The above content is only an example and description of the structure of the utility model, and those skilled in the art can make various modifications or supplements or replace with similar ways to the described specific embodiments, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, and they should belong to the protection scope of the utility model.

Claims

1. A laminectomy retractor for use in open surgery of the lumbar spine comprising a lamina fixation plate and a retractor plate, characterised in that, The adjusting assembly is arranged between the lamina fixation plate and the hook plate, and is used for adjusting the overall length of the lamina hook. The lower surface of the lamina fixation plate is fixedly connected with a first positioning block, and the lower surface of the lamina fixation plate is fixedly connected with two first side blocks.

2. A laminar retractor for use in open surgery of the lumbar spine according to claim 1, wherein, The adjusting assembly comprises an adjusting plug plate fixedly connected to the right side of the lamina fixation plate, and the left side of the hook plate is provided with an adjusting sliding groove.

3. A laminar retractor for use in open surgery of the lumbar spine according to claim 2, wherein, The adjusting plug plate is inserted and installed in the inner wall of the adjusting sliding groove, the upper surface of the hook plate is provided with a positioning bolt hole, and the inner wall of the positioning bolt hole is threadedly connected with an adjusting bolt.

4. A laminar retractor for use in open surgery of the lumbar spine according to claim 3, wherein, The upper surface of the adjusting plug plate is provided with a plurality of positioning adjusting grooves which are evenly distributed in a straight line array on the surface of the adjusting plug plate, and the size of the positioning adjusting groove is matched with the adjusting bolt.

5. A laminar retractor for use in open surgery of the lumbar spine according to claim 1, wherein, The right side of the hook plate is fixedly connected with a bent plate hook, and the surface of the bent plate hook is provided with two screw holes.

6. A laminar retractor for use in open surgery of the lumbar spine according to claim 1, wherein, The left end of the lamina fixation plate is fixedly connected with a sharp block, and the surface of the lamina fixation plate is provided with a fixing hole, and the position of the fixing hole is close to the sharp block.

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