Adjustable drag hook for cervical vertebra surgery

Abstract

The utility model aims to provide an adjustable draw hook for cervical vertebra surgery, which relates to the technical field of medical instruments, and is characterized in that the front end of an L-shaped draw hook is telescopically connected with a hook head, the hook head can longitudinally extend into a surgical wound, and the rear end of the L-shaped draw hook is telescopically connected with a holding plate, so that the L-shaped draw hook can be extended; the two sides of the front end of the L-shaped drag hook are connected with a plurality of tightly-attached expansion blocks through rotating shafts, the expansion blocks are rotated to be opened and attached to the side face of the L-shaped drag hook by rotating the expansion blocks, the area of the front end of the L-shaped drag hook is transversely expanded, the two sides of the hook head are slidably provided with a plurality of tightly-attached extension blocks, and the extension blocks can transversely slide to stretch out of the side face of the hook head. The area of the hook head is enlarged, the tissue traction range is enlarged, so that the surgical field is better exposed, and the tightly-attached extension blocks and the tightly-attached extension blocks can prevent the condition that the surgical field is affected due to the fact that the pulled soft tissue protrudes out of a gap between the extension blocks and a gap between the extension blocks when the tissue traction range is transversely enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field related to medical instruments, in particular to an adjustable retractor for cervical vertebra surgery. Background Art

[0002] The cervical retractor usually consists of a head and a handle, with the head having a hook. It is generally made of stainless steel and is used in orthopedic surgery to expose the surgical field, make the surgery easier, protect tissues, and avoid accidents.

[0003] The current cervical retractor has a limited range of tissue retraction and cannot be quickly applied to anterior cervical multi-segment surgery. It cannot expose the surgical field well. If multiple retractors are used to retract tissue to expand the range of tissue retraction, the gaps between the retractors will cause the soft tissue to bulge into the surgical field from the gaps between the retractors, affecting the operation. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present invention provides the following technical solutions:

[0005] An adjustable retractor for cervical spine surgery comprises an L-shaped retractor, a hook head and a gripping plate, wherein the rear end of the L-shaped retractor is telescopically connected to the gripping plate, and the front end is telescopically connected to the hook head, and a plurality of extension blocks are connected to the rotating shafts on both sides of the front end of the L-shaped retractor, and the extension blocks on the same side are tightly fitted, and the extension blocks are rotated to make the extension blocks close to the side or top of the L-shaped retractor, and a limit device is provided on the L-shaped retractor to limit the rotation of the extension blocks;

[0006] A plurality of extension blocks are slidably arranged on both sides of the hook head. The extension blocks slide out toward the side of the hook head or retract into the hook head, and the extension blocks on the same side are tightly fitted.

[0007] Furthermore, a plurality of grooves are provided on the L-shaped hook corresponding to the extension block, a sliding groove is provided in the groove, the limiting device includes a shift block sliding in the groove, and a limiting column sliding in the sliding groove, the shift block is fixedly connected to the limiting column, a limiting hole is provided on the extension block at a position corresponding to the sliding groove, and the limiting column is inserted into the limiting hole by sliding the limiting column to limit the rotation of the extension block.

[0008] Furthermore, the hook head is inserted into the front end of the L-shaped hook and slides inside, and the rear end of the L-shaped hook is inserted into the gripping plate and slides inside.

[0009] Furthermore, a plurality of insertion holes are provided on the side of the tail end of the L-shaped hook, and a latch is provided on the side of the grip plate, so that the sliding of the L-shaped hook is limited by the cooperation between the latch and the insertion hole.

[0010] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0011] The utility model has a telescopically connected hook head at the front end of the L-shaped retractor, which can extend the hook head longitudinally into the surgical wound, and the L-shaped retractor can be extended by telescopically connecting the gripping plate at the rear end of the L-shaped retractor, so as to facilitate tissue pulling; a plurality of tightly fitting extension blocks are connected to the rotating shafts on both sides of the front end of the L-shaped retractor, and the extension blocks are rotated and opened to stick to the side surfaces of the L-shaped retractor, so as to achieve the lateral extension of the area of ​​the front end of the L-shaped retractor and increase the range of tissue pulling, and a plurality of tightly fitting extension blocks are slidably arranged on both sides of the hook head, so that the extension blocks can be slid laterally out of the side surfaces of the hook head, so as to expand the area of ​​the hook head and increase the range of tissue pulling, thereby better exposing the surgical field, and the tightly fitting extension blocks and the tightly fitting extension blocks can prevent the pulled soft tissue from protruding out of the gaps between the extension blocks and the gaps between the extension blocks when the range of tissue pulling is increased laterally, thereby affecting the surgical field. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 This is an enlarged schematic diagram of the three-dimensional structure A of the utility model;

[0014] Figure 3 This is a side view of the structure of the utility model;

[0015] Figure 4 It is an enlarged schematic diagram of the utility model when it is not horizontally expanded;

[0016] Figure 5 This is a schematic diagram of the rotation of the expansion block of the utility model;

[0017] Figure 6 It is a cross-sectional schematic diagram of the L-shaped draw hook of the utility model.

[0018] In the figure: L-shaped hook-1, groove-11, sliding groove-12, plug-in hole-13, extension block-2, limiting hole-21, hook head-3, extension block-4, limiting device-5, shift block-51, limiting column-52, grip plate-6, latch-7. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1:

[0021] See also Figure 1-6An adjustable retractor for cervical surgery comprises an L-shaped retractor 1, a hook head 3 and a gripping plate 6, wherein the rear end of the L-shaped retractor 1 is telescopically connected to the gripping plate 6, and the front end is telescopically connected to the hook head 3, the hook head 3 is inserted into the front end of the L-shaped retractor 1 to slide, and the rear end of the L-shaped retractor 1 is inserted into the gripping plate 6 to slide, a plurality of insertion holes 13 are provided on the side of the tail end of the L-shaped retractor 1, and a latch 7 is provided on the side of the gripping plate 6, and the sliding of the L-shaped retractor 1 is limited by the cooperation between the latch 7 and the insertion hole 13;

[0022] In this embodiment, the hook head 3 is telescopically connected to the front end of the L-shaped retractor 1, and the hook head 3 can be longitudinally extended into the surgical wound. The L-shaped retractor 1 can be extended by telescopically connecting the grip plate 6 to the rear end of the L-shaped retractor 1, so as to facilitate pulling of tissues.

[0023] Embodiment 2:

[0024] See also Figure 1-6 According to Example 1, the front end of the L-shaped hook 1 is connected to a plurality of extension blocks 2 by the rotating shafts on both sides, and the extension blocks 2 on the same side are tightly fitted to each other. The extension blocks 2 are rotated to make the extension blocks 2 close to the side or top of the L-shaped hook 1, and a limit device 5 is provided on the L-shaped hook 1 to limit the rotation of the extension blocks 2;

[0025] In this embodiment, when the extension block 2 does not extend the L-shaped hook 1, the extension block 2 is close to the top of the L-shaped hook 1, and when the extension block 2 extends the L-shaped hook 1, the extension block 2 is close to the side of the L-shaped hook 1;

[0026] In this embodiment, a number of tightly fitting expansion blocks 2 are connected to the rotating shafts on both sides of the front end of the L-shaped retractor 1. The expansion blocks 2 are rotated to open and stick to the sides of the L-shaped retractor 1, so as to achieve the lateral expansion of the area of ​​the front end of the L-shaped retractor 1 and increase the range of the pulled tissue. In addition, the tightly fitting expansion blocks 2 can prevent the pulled soft tissue from protruding out of the gap between the expansion blocks 2 and affecting the surgical field when the range of the pulled tissue is increased laterally.

[0027] Embodiment 3:

[0028] See also Figure 1-6 According to Embodiment 1, a plurality of extension blocks 4 are slidably arranged on both sides of the hook head 3, and the extension blocks 4 slide out to the sides of the hook head 3 or retract into the hook head 3, and the extension blocks 4 on the same side are tightly fitted with each other. When the extension blocks 4 extend the area of ​​the hook head 3 laterally, the extension blocks 4 slide out from both sides of the hook head 3 respectively, and when the extension blocks 4 do not extend the area of ​​the hook head 3 laterally, the extension blocks 4 slide back into the hook head 3;

[0029] In this embodiment, a number of tightly fitting extension blocks 4 are slidably arranged on both sides of the hook head 3. The extension blocks 4 can be slid laterally out of the sides of the hook head 3 to expand the area of ​​the hook head 3 and increase the range of tissue traction, thereby better exposing the surgical field. In addition, the tightly fitting extension blocks 4 can prevent the pulled soft tissue from protruding out of the gaps between the extension blocks 4 and affecting the surgical field when the range of tissue traction is increased laterally.

[0030] Embodiment 4:

[0031] See also Figure 1-6 According to Example 2, a plurality of grooves 11 are provided on the L-shaped hook 1 corresponding to the extension block 2, and a sliding groove 12 is provided in the groove 11. The limiting device 5 includes a shift block 51 sliding in the groove 11, and a limiting column 52 sliding in the sliding groove 12. The shift block 51 is fixedly connected to the limiting column 52. A limiting hole 21 is provided on the extension block 2 at a position corresponding to the sliding groove 12. The limiting column 52 is inserted into the limiting hole 21 by sliding the shift block 51 to limit the rotation of the extension block 2.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable retractor for cervical spine surgery, comprising an L-shaped retractor, a hook head and a grip plate, characterized in that: The rear end of the L-shaped hook is telescopically connected to the gripping plate, and the front end is telescopically connected to the hook head. A plurality of extension blocks are connected to the rotating shafts on both sides of the front end of the L-shaped hook. The extension blocks on the same side fit tightly together. The extension blocks are rotated to make them close to the side or top of the L-shaped hook, and a limit device is provided on the L-shaped hook to limit the rotation of the extension blocks. A plurality of extension blocks are slidably arranged on both sides of the hook head. The extension blocks slide out toward the side of the hook head or retract into the hook head, and the extension blocks on the same side are tightly fitted.

2. The adjustable retractor for cervical spine surgery according to claim 1, characterized in that: The L-shaped hook is provided with a plurality of grooves corresponding to the extension block, and a sliding groove is provided in the groove. The limiting device includes a shifting block sliding in the groove and a limiting column sliding in the sliding groove. The shifting block is fixedly connected to the limiting column. A limiting hole is provided on the extension block at a position corresponding to the sliding groove. The limiting column is inserted into the limiting hole by sliding the limiting column to limit the rotation of the extension block.

3. The adjustable retractor for cervical spine surgery according to claim 1, characterized in that: The hook head is inserted into the front end of the L-shaped drag hook and slides inside, and the rear end of the L-shaped drag hook is inserted into the gripping plate and slides inside.

4. The adjustable retractor for cervical vertebra surgery according to claim 3, characterized in that: A plurality of insertion holes are arranged on the rear end side of the L-shaped draw hook, and a latch is arranged on the side of the grip plate, and the sliding of the L-shaped draw hook is limited by the cooperation between the latch and the insertion hole.

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