Surgical tools

Abstract

The present invention provides a surgical tool, comprising: a stripper, a buckle ring and a cutter; the stripper comprises a stripper rod and a stripper head connected to the stripper rod, the stripper head is arc-shaped; the cutter comprises a cutter bar and a cutter head connected to the cutter bar, the cutter head is arc-shaped; the cutter head is provided with a receiving surface, and a blade is provided on the receiving surface; the width of the cutter bar is equal to the width of the stripper bar; the interior of the buckle ring is a hollow structure, the edge of the buckle ring has an opening connected to the hollow structure, the opening is hinged on the stripper rod, the hollow structure is for the cutter head to be inserted, and the width of the cutter bar is equal to the width of the hollow structure. The surgical tool of the present invention is used for oblique lateral approach surgery. When removing the intervertebral disc, the stripper head is used to push away the blood vessels in front of the intervertebral disc, and the cutter head completes the removal of the intervertebral disc, which can improve the surgical operation clearance and reduce the surgical risk.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a surgical tool. Background Art

[0002] There are several different approaches for intervertebral fusion, including the anterior approach, lateral approach, and oblique lateral approach. The oblique lateral approach reduces the neurological complications of the lateral approach through the psoas major muscle and avoids cutting and stripping the psoas major muscle. The oblique lateral approach is more minimally invasive and avoids manipulation of the psoas major muscle. However, during the oblique lateral approach, because there are abdominal aorta and inferior vena cava in front of the vertebral body, there are problems such as greater surgical risks and small surgical operating space when removing the intervertebral disc. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a surgical tool that can increase the surgical operating space and reduce the surgical risk when removing the intervertebral disc.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a surgical tool, including: a stripper, a buckle ring and a cutter;

[0005] The stripper comprises a stripping rod and a stripping head connected to the stripping rod, wherein the stripping head is arc-shaped;

[0006] The cutter comprises a knife bar and a knife head connected to the knife bar, the knife head is arc-shaped; a receiving surface is provided on the knife head, and a blade is provided on the receiving surface; the width of the knife bar is equal to the width of the stripping bar; the width of the stripping head is less than or equal to the width of the stripping bar; the width of the knife head is less than or equal to the width of the knife bar; the width of the blade is less than or equal to the width of the knife head;

[0007] The interior of the buckle ring is a hollow structure, and an opening portion connected to the hollow structure is provided on the edge of the buckle ring. The opening portion is hinged on the peeling rod, and the knife head is inserted into the hollow structure. The width of the knife rod is equal to the width of the hollow structure.

[0008] Preferably, along the direction away from the peeling bar, the width of the peeling head decreases successively.

[0009] Furthermore, along the direction away from the peeling bar, the thickness of the peeling head decreases successively.

[0010] Preferably, the thickness of the cutter head decreases gradually along a direction away from the cutter rod.

[0011] Furthermore, along the direction away from the knife rod, the width of the knife head decreases successively.

[0012] Preferably, the buckle includes two support plates and a connecting plate, the two support plates are arranged in parallel, the two opposite side surfaces of the peeling rod are respectively hinged to one end of the two support plates, and the other ends of the two support plates are connected through the connecting plate; the spacing between the two support plates is the width of the hollow structure.

[0013] Preferably, the surgical tool further comprises two auxiliary hooks arranged opposite to each other, the hook head of each auxiliary hook hooks the stripping rod, and one end of each auxiliary hook away from the hook head is hinged to the buckle.

[0014] As described above, the surgical tool of the present invention has the following beneficial effects:

[0015] When the surgical tool of the present invention is used, the stripping head of the stripper is used to gently push the blood vessels in front of the intervertebral disc, which can expose more vertebral bodies and protect large blood vessels; the cutter is inserted into the buckle ring, the buckle ring is loosened from the stripper, and the cutter and the stripper form a joint movement; a blade is provided on the cutter head, and the blade can remove the intervertebral disc; the width of the knife rod is equal to the width of the stripping rod, the width of the stripping head is less than or equal to the width of the stripping rod, the width of the knife head is less than or equal to the width of the knife rod, the width of the blade is less than or equal to the width of the knife head, and the width of the knife rod is equal to the width of the hollow structure. This structure ensures that the blade on the knife head is always in the same plane with the stripping head during the process of removing the intervertebral disc, and the knife head and the blade will not damage the blood vessels and nerves; the surgical tool of the present invention is used for oblique lateral approach surgery. When removing the intervertebral disc, the stripping head of the stripper is used to push the blood vessels in front of the intervertebral disc, and the knife head completes the removal of the intervertebral disc, which can increase the surgical operation gap and reduce the surgical risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the surgical tool of this embodiment.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the auxiliary hook of the surgical tool of this embodiment hooking the stripper.

[0018] Figure 3 Shown is a schematic structural diagram of a cutting knife of a surgical tool according to this embodiment.

[0019] Figure 4 Shown is a schematic structural diagram of the receiving surface of the blade head of the cutting knife of the surgical tool of this embodiment.

[0020] Figure 5 It is a schematic diagram showing the structure of one side of the thickness direction of the stripper of the surgical tool of this embodiment.

[0021] Figure 6A schematic diagram showing the structure of one side of the width direction of the dissector of the surgical tool of this embodiment.

[0022] Figure 7 Shown is a schematic three-dimensional structure diagram of the buckle of the surgical tool of this embodiment.

[0023] Figure 8 Shown is a schematic side structural diagram of the buckle of the surgical tool of this embodiment.

[0024] Fig. 9 The diagram shows the three-dimensional structure of the surgical tool of this embodiment when the cutting blade begins to be inserted into the intervertebral disc.

[0025] Fig.10 The diagram shows the three-dimensional structure of the cutting blade of the surgical tool of this embodiment when cutting into the intervertebral disc.

[0026] Description of Figure Numbers

[0027] 10 vertebrae

[0028] 100 Stripper

[0029] 110 Peeling rod

[0030] 120 Stripping head

[0031] 130 Stripping handle

[0032] 200 Buckle

[0033] 210 Hollow Structure

[0034] 220 Opening

[0035] 201 Support plate

[0036] 202 Connecting plate

[0037] 300 Cutter

[0038] 310 Toolholder

[0039] 320 blade

[0040] 321 Surface

[0041] 322 Blade

[0042] 330 Handle

[0043] 400 Auxiliary hook

[0044] 410 Hook

[0045] W1 Width of the blade

[0046] W2 Stripping head width

[0047] W3 Width of hollow structure

[0048] W4 Width of the tool bar

[0049] W5 Width of peel bar

[0050] W6 Blade width

[0051] T1 Stripping head thickness

[0052] T2 blade thickness DETAILED DESCRIPTION

[0053] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0054] Please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0055] like Figures 1 to 10 As shown, the surgical tool of this embodiment includes: a stripper 100, a buckle ring 200 and a cutter 300;

[0056] The stripper 100 includes a stripping rod 110 and a stripping head 120 connected to the stripping rod 110, and the stripping head 120 is arc-shaped;

[0057] The cutter 300 includes a cutter bar 310 and a cutter head 320 connected to the cutter bar 310, and the cutter head 320 is arc-shaped; a receiving surface 321 is provided on the cutter head 320, and a blade 322 is provided on the receiving surface 321;

[0058] The width W4 of the knife bar 310 is equal to the width W5 of the peeling bar 110; the width W2 of the peeling head 120 is less than or equal to the width W5 of the peeling bar 110; the width W1 of the knife head 320 is less than or equal to the width W4 of the knife bar 310; the width W6 of the blade 322 is less than or equal to the width W1 of the knife head 320; the length direction of the knife bar 310 is Figure 3The direction of the arrow A in the middle; the length direction of the knife bar 310 is perpendicular to the width direction of the knife bar 310. The width direction of the knife bar 310 is in the same direction as the width direction of the knife head 320, and the width direction of the knife bar 310 is in the same direction as the width direction of the blade 322. The width direction of the stripping rod 110 is in the same direction as the width direction of the stripping head 120. In this embodiment, the width W1 of the knife head 320 is smaller than the width W4 of the knife bar 310, the width W6 of the blade 322 is smaller than the width W1 of the knife head 320, and the width W2 of the stripping head 120 is smaller than the width W5 of the stripping rod 110;

[0059] The interior of the buckle 200 is a hollow structure 210, and the edge of the buckle 200 has an opening 220 connected to the hollow structure 210. The opening 220 is hinged to the peeling rod 110. The hollow structure 210 is for inserting the cutter head 320. The width W4 of the cutter rod 310 is equal to the width W3 of the hollow structure 210. The hollow structure 210 and the cutter rod 310 are clearance fit, and the hollow structure 210 and the peeling rod 110 are clearance fit.

[0060] When the surgical tool of the present invention is used, the stripping head 120 of the stripper 100 is used to gently push the blood vessels in front of the intervertebral disc, which can expose more vertebral bodies 10 and protect large blood vessels; the cutter 300 is inserted into the buckle 200, the buckle 200 is loosened from the stripper 100, and the cutter 300 and the stripper 100 form a joint movement; the blade 322 is provided on the cutter head 320, and the blade 322 can remove the intervertebral disc; the width W4 of the knife rod 310 is equal to the width W5 of the stripping rod 110; the width W2 of the stripping head 120 is less than or equal to the width W5 of the stripping rod 110; the width W1 of the knife head 320 is less than or equal to the width W2 of the knife rod 310 width W4; width W6 of blade 322 is less than or equal to width W1 of cutter head 320; width W4 of shank 310 is equal to width of hollow structure 210, and this structure ensures that during the process of removing intervertebral disc, blade 322 on cutter head 320 is always in the same plane with stripping head 120, and cutter head 320 will not damage blood vessels and nerves; the surgical tool of the present invention is used for oblique lateral approach surgery, when removing intervertebral disc, stripping head of stripper 100 is used to push open blood vessels in front of intervertebral disc, and blade 322 on cutter head 320 completes the removal of intervertebral disc, which can improve surgical operation clearance and reduce surgical risks.

[0061] The width W2 of the stripping head 120 decreases in a direction away from the stripping rod 110. The thickness T1 of the stripping head 120 decreases in a direction away from the stripping rod 110. This structure makes the stripping head 120 compact, and the stripping head 120 occupies less space when inserted between the blood vessel and the vertebral body 10. The thickness direction of the stripping head 120 is perpendicular to the width direction of the stripping head 120.

[0062] The width W1 of the cutter head 320 decreases in a direction away from the cutter bar 310. The thickness T2 of the cutter head 320 decreases in a direction away from the cutter bar 310. This structure makes the cutter head 320 compact, and the cutter head 320 occupies less space when inserted between the blood vessel and the vertebral body 10. In this embodiment, the end of the cutter head 320 away from the cutter bar 310 is a pointed structure. The thickness direction of the cutter head 320 is perpendicular to the width direction of the cutter head 320.

[0063] The buckle ring 200 includes two support plates 201 and a connecting plate 202. The two support plates 201 are arranged in parallel. Two opposite sides of the stripping rod 110 are respectively hinged to one end of the two support plates 201. The other ends of the two support plates 201 are connected through the connecting plate 202. The distance between the two support plates 201 is the width W3 of the hollow structure 210. The buckle ring 200 has a simple structure and can ensure that the blade head 320 is always in the same plane as the stripping head 120 during the process of removing the intervertebral disc.

[0064] The surgical tool further includes two auxiliary hooks 400 disposed opposite to each other, the hook head 410 of each auxiliary hook 400 hooks the stripping rod 110, one end of each auxiliary hook 400 away from the hook head 410 is hinged to the buckle 200, and two opposite sides of the buckle 200 are respectively hinged to the two auxiliary hooks 400. The arrangement of the two auxiliary hooks 400 makes the movement of the buckle 200 more stable.

[0065] The peeling rod 110 is provided with a peeling handle 130 , and the knife rod 310 is provided with a knife handle 330 .

[0066] The method for using the surgical tool of the present invention comprises the following steps:

[0067] 1) Cut the skin and subcutaneous tissue, and bluntly separate the muscle tissue until vertebral body 10 is exposed;

[0068] 2) Use the dissector 100 to gently push the blood vessels in front of the intervertebral disc, which can expose more vertebral bodies 10 and protect large blood vessels;

[0069] 3) Insert the cutter 300 into the buckle 200 of the stripper 100, the buckle 200 is automatically released from the stripper 100, and the cutter 300 and the stripper 100 form a joint movement. At this time, the stripping head 120 extends in a direction away from the cutter head 320, and the receiving surface 321 of the cutter head 320 is located on the side of the cutter head 320 away from the stripping head 120; the width W1 of the cutter head 320 is equal to the width W2 of the stripping head 120, and the width W1 of the cutter head 320 is equal to the width W3 of the hollow structure 210. This structure ensures that the cutter 300 can only move in a fixed direction and will not damage blood vessels and nerves;

[0070] 4) The blade 322 on the blade head 320 of the cutter 300 is capable of removing the intervertebral disc.

[0071] In the surgical tool of the present invention, the stripper 100 pushes away the blood vessels, protects the blood vessels from damage, and exposes more vertebral bodies 10. When the cutter 300 is inserted into the buckle 200 on the stripper 100, the cutter 300 and the stripper 100 form a component, the width W1 of the cutter head 320 is consistent with the width W3 of the hollow structure 210, and the cutter 300 and the stripper 100 can only move relative to each other in the same plane and remove the intervertebral disc without damaging the blood vessels. The surgical tool of the present invention is used for oblique lateral approach surgery. The surgical risk of using the surgical tool of the present invention is low, the vertebral body 10 is more exposed, and the operation is convenient and safe.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A surgical tool, characterized in that: include: A stripper (100), a retaining ring (200) and a cutter (300); The stripper (100) comprises a stripping rod (110) and a stripping head (120) connected to the stripping rod (110); the stripping head (120) is arc-shaped; The cutter (300) comprises a knife bar (310) and a knife head (320) connected to the knife bar (310), wherein the knife head (320) is arc-shaped; a receiving surface (321) is provided on the knife head (320), and a blade (322) is provided on the receiving surface (321); the width of the knife bar (310) is equal to the width of the stripping bar (110); the width of the stripping head (120) is less than or equal to the width of the stripping bar (110); the width of the knife head (320) is less than or equal to the width of the knife bar (310); and the width of the blade (322) is less than or equal to the width of the knife head (320); The interior of the buckle ring (200) is a hollow structure (210), and an opening (220) is provided on the edge of the buckle ring (200) and is connected to the hollow structure (210). The opening (220) is hinged to the stripping rod (110). The hollow structure (210) is for the knife head (320) to be inserted into. The width of the knife rod (310) is equal to the width of the hollow structure (210). The buckle ring (200) comprises two support plates (201) and a connecting plate (202). The two support plates (201) are arranged in parallel. The stripping rod (110) is connected to the stripping rod (110). The two opposite side surfaces of (110) are respectively hinged to one end of the two support plates (201), and the other ends of the two support plates (201) are connected via the connecting plate (202); the distance between the two support plates (201) is the width of the hollow structure (210); the surgical tool also includes two auxiliary hooks (400) arranged opposite to each other, the hook head (410) of each auxiliary hook (400) hooks the stripping rod (110), and the end of each auxiliary hook (400) away from the hook head (410) is hinged to the buckle (200).

2. The surgical tool according to claim 1, characterized in that: Along the direction away from the peeling bar (110), the width of the peeling head (120) decreases successively.

3. The surgical tool according to claim 2, characterized in that: Along the direction away from the peeling bar (110), the thickness of the peeling head (120) decreases successively.

4. The surgical tool according to claim 1, characterized in that: Along the direction away from the knife rod (310), the width of the knife head (320) decreases successively.

5. The surgical tool according to claim 4, characterized in that: Along the direction away from the knife rod (310), the thickness of the knife head (320) decreases successively.

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