Spinal minimally invasive distractor

Abstract

The utility model discloses a kind of spine minimally invasive distraction device, comprising: left handle, right handle, left retractor piece being set to the left handle front end, right retractor piece being set to the right handle front end, left support spring, right support spring and support pull hook, the middle part of the left handle, right handle and support pull hook is hinged, the lower end of the left support spring is fixed to the inboard of left handle, the lower end of the right support spring is fixed to the inboard of right handle, the rear end of the left handle and right handle is set to the adjusting portion with control left handle and right handle compression angle, the adjusting portion includes the lock rack being hinged on the rear end of left handle and the clamping hole being set to the rear end of right handle and the lock rack cooperation clamping, the spine minimally invasive distraction device of the utility model, force position is easy to grasp, positioning is convenient, stability is high, and it is convenient for intraoperative observation operation.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to a minimally invasive spinal stretcher. Background Technology

[0002] In spinal surgery, compression is often required during the procedure. This is achieved by moving the compressor laterally from both sides towards the midpoint, reducing the distance between the rod holder and the pedicle screw. However, existing methods suffer from instability in fixation. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a minimally invasive spinal spreader. The force position is easy to grasp, positioning is convenient, and stability is high. It is convenient for intraoperative observation and operation. The opening angle of the left and right clamp handles can be locked by the cooperation of the locking rack and the locking hole. It is easy to operate and has the advantages of convenient positioning and high stability.

[0004] One technical solution of this utility model is a minimally invasive spinal spreader, comprising: a left clamp handle, a right clamp handle, a left retraction plate disposed at the front end of the left clamp handle, a right retraction plate disposed at the front end of the right clamp handle, a left support spring, a right support spring, and a support hook. The left clamp handle, the right clamp handle, and the support hook are hinged at the middle. The lower end of the left support spring is fixed to the inner side of the left clamp handle, and the lower end of the right support spring is fixed to the inner side of the right clamp handle. The rear ends of the left and right clamp handles are provided with an adjustment part for controlling the compression angle of the left and right clamp handles. The adjustment part includes a locking rack hinged to the rear end of the left clamp handle and a locking hole disposed at the rear end of the right clamp handle for engaging with the locking rack.

[0005] In a preferred embodiment of the present invention, a limiting hole is provided at the middle position of the support hook, and the support hook is connected to the left and right pliers by passing through the limiting hole with a jaw screw.

[0006] In a preferred embodiment of the present invention, the support hook includes an integrally formed support head, support body and hook portion, and the limiting hole is formed on the support body.

[0007] In a preferred embodiment of the present invention, the support head extends between the left and right traction plates, and the length of the support head is equal to the thickness of the left and right traction plates.

[0008] In a preferred embodiment of this utility model, the left and right pull-opening plates are symmetrically arranged and have a semi-circular arc structure.

[0009] In a preferred embodiment of the present invention, the left and right clamp handles are provided with hand-held limiting parts, and the lower end of the hand-held limiting parts is provided with an anti-slip structure.

[0010] In a preferred embodiment of this utility model, the left pull-opening piece is welded to the front end of the left clamp handle, and the right pull-opening piece is welded to the front end of the right clamp handle.

[0011] The beneficial effects of this utility model are: the force position of this minimally invasive spinal spreader is easy to grasp, convenient to position, and highly stable, making it easy to observe and operate during surgery. The opening angle of the left and right clamp handles can be locked by the cooperation of the locking rack and the locking hole. It is not easy to slip during compression, which improves safety. It has the advantages of convenient operation, convenient positioning, and high stability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the normal opening structure of the spinal minimally invasive spreader of this utility model; Figure 2 This is a schematic diagram of the structure of the minimally invasive spinal spreader of this utility model during compression; Figure 3 This is a side view of the spinal minimally invasive spreader of this utility model. Detailed Implementation

[0013] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] Please see Figure 1-3 This utility model discloses a minimally invasive spinal retractor, comprising: a left clamp handle 1, a right clamp handle 2, a left retraction plate 3 disposed at the front end of the left clamp handle, a right retraction plate 4 disposed at the front end of the right clamp handle, a left support spring 5, a right support spring 6, and a support hook 7. The left retraction plate is welded to the front end of the left clamp handle by argon arc welding, and the right retraction plate is welded to the front end of the right clamp handle by argon arc welding. A limiting hole 8 is opened in the middle of the support hook. The support hook is hinged to the left and right clamp handles by a cheek axis screw 13 passing through the limiting hole. The cheek axis screw should be kept as tight as possible so that the swing between the clamp head and the clamp handle is less than 0.1mm, resulting in better stability. During use, the fixed position of the cheek axis screw in the limiting hole can be adjusted according to the needs of different surgeries.

[0015] Specifically, the lower end of the left support spring is fixed to the inner side of the left clamp handle, and the lower end of the right support spring is fixed to the inner side of the right clamp handle. The rear ends of the left and right clamp handles are provided with an adjustment part for controlling the compression angle of the left and right clamp handles. The adjustment part includes a locking rack 9 hinged to the rear end of the left clamp handle and a locking hole 10 provided at the rear end of the right clamp handle for engaging with the locking rack. The diameter of the locking hole is larger than that of the locking rack to facilitate the sliding of the locking rack within the locking rack. The engagement of the locking rack and the locking hole can lock the opening angle of the left and right clamp handles, making it less prone to slippage during compression and easy to control the force position.

[0016] Specifically, the left and right pull-opening plates are symmetrically arranged and have a semi-circular arc structure. The support hook includes an integrally formed support head 71, support body 72, and hook 73. The limiting hole is opened on the support body. The support head extends between the left and right pull-opening plates, and the length of the support head is equal to the thickness of the left and right pull-opening plates, which plays a certain supporting and positioning role.

[0017] Specifically, the left and right clamp handles are provided with hand-holding limiting parts 11, and the lower end of the hand-holding limiting parts is provided with anti-slip structures 12. The anti-slip structures are rubber-coated anti-slip teeth. The anti-slip teeth can be circular anti-slip grooves, arc-shaped anti-slip grooves, or anti-slip patterns, or a combination of these, to increase friction and make the grip relatively stable. When the operator holds the corresponding anti-slip structures of the left and right clamp handles and applies pressure inward, the left and right clamp handles rotate around the cheek axis screw. The left and right retraction plates at the upper end of the left and right clamp handles open, and the locking toothed strip and the locking hole cooperate to fix the opening angle to facilitate subsequent surgery.

[0018] The beneficial effects of this utility model are: simple structure, the opening angle of the left and right clamp handles can be locked by the cooperation of the locking rack and the snap-fit ​​hole, it is not easy to slip during compression, the force position is easy to grasp, and it has the advantages of convenient positioning, high stability and easy intraoperative observation.

[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A minimally invasive spinal spreader, characterized in that, include: The device includes a left clamp handle, a right clamp handle, a left pull tab located at the front end of the left clamp handle, a right pull tab located at the front end of the right clamp handle, a left support spring, a right support spring, and a support hook. The left and right clamp handles are hinged to the middle of the support hook. The lower end of the left support spring is fixed to the inner side of the left clamp handle, and the lower end of the right support spring is fixed to the inner side of the right clamp handle. The rear ends of the left and right clamp handles are provided with an adjustment part for controlling the compression angle of the left and right clamp handles. The adjustment part includes a locking rack hinged to the rear end of the left clamp handle and a locking hole located at the rear end of the right clamp handle that engages with the locking rack.

2. The spinal minimally invasive spreader according to claim 1, characterized in that, A limiting hole is provided in the middle of the support hook, and the support hook is connected to the left and right pliers by passing through the limiting hole with a jaw screw.

3. The spinal minimally invasive spreader according to claim 2, characterized in that, The support hook includes an integrally formed support head, support body, and hook portion, and the limiting hole is formed on the support body.

4. The spinal minimally invasive spreader according to claim 3, characterized in that, The support head extends between the left and right traction plates, and the length of the support head is equal to the thickness of the left and right traction plates.

5. The spinal minimally invasive spreader according to claim 1, characterized in that, The left and right pull-opening plates are symmetrically arranged and have a semi-circular arc structure.

6. The minimally invasive spinal spreader according to claim 1, characterized in that, The left and right clamp handles are provided with hand-holding limiting parts, and the lower end of the hand-holding limiting parts is provided with an anti-slip structure.

7. The minimally invasive spinal spreader according to claim 1, characterized in that, The left pull tab is welded to the front end of the left clamp handle, and the right pull tab is welded to the front end of the right clamp handle.

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