Medical drag hook

Abstract

The utility model relates to the field of medical instruments, in particular to a medical drag hook which comprises a handheld portion and a hook portion which are integrally connected, the medical drag hook is made of PEEK materials in an integral forming mode, and a convex rib is arranged on one side of the drag hook. The medical drag hook is made of novel PEEK materials, adaptive adjustment is carried out on a conventional modeling structure, the purposes of reducing mass and cost and improving biocompatibility are achieved on the basis that the overall structural strength is guaranteed, and the later market popularization effect is excellent.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a medical retractor. Background Art

[0002] Medical retractors are a common surgical instrument, which is designed to be inserted through the surgical incision of the body through a specially shaped curved hook and pull the tissues (such as skin, muscle, etc.) on both sides of the incision backwards under the action of external force, thereby effectively exposing the surgical field and space. The shapes of medical retractors in the prior art vary, and they can be adapted according to different surgical sites. However, the overall material is medical stainless steel, which is not only heavy but also has poor biocompatibility. It also further increases the fatigue of the surgical assistant during long-term surgery. Utility Model Content

[0003] The purpose of the utility model is to provide a medical retractor. The medical retractor of the utility model is made of a new type of PEEK material, and adaptive adjustments are made to the conventional shape structure, thereby achieving the purpose of reducing weight, reducing costs and improving biocompatibility while ensuring the overall structural strength.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A medical retractor comprises a hand-held portion and a hook portion which are integrally connected. The medical retractor is made of PEEK material and is integrally formed, and a convex rib is provided on one side of the retractor.

[0006] Preferably, the convex rib extends along the length direction of the hook to both ends of the hook.

[0007] Preferably, the base area of ​​the convex rib connecting the hook is larger than the free end area of ​​the top.

[0008] The free end surface and the base surface of the convex rib are smoothly transitionally connected through an arc surface, and the arc surface is in an S-shape composed of two circumscribed arcs.

[0009] Traditional medical retractors are only bent metal flat plates. To improve their mechanical properties, the only way is to increase their thickness. However, the increase in thickness greatly increases the cost, weight, and reduces the comfort of holding. However, the present application uses PEEK material and adds ribs to reduce the thickness of the device, which can reduce the weight and cost while still giving it good mechanical properties. It also improves its rigidity and elasticity to a certain extent, making it less prone to deformation and breakage, and improving its stability during surgery.

[0010] Preferably, a plurality of anti-slip protrusion structures are provided on the surface of the hand-held portion.

[0011] Traditional medical retractors are made of smooth stainless steel, which has a great risk of slipping during surgery, especially when pulling deep parts, large tissues, organs, etc. The present application adds an anti-slip convex structure at the handheld part to prevent the medical retractor from slipping.

[0012] Preferably, the anti-slip protrusions are arranged in an array with equal spacing and the height of the protrusion relative to the surface of the handheld portion is 0.5 mm. This design is based on full consideration of cost reduction and meets the requirements of anti-slip and ergonomic grip. It reduces the discomfort of gripping by medical staff, and at the same time, the tiny and smooth protrusions will not cause secondary damage to the muscles and tissues in contact.

[0013] Preferably, the two ends of the handle portion in the length direction are curved with the same curvature in opposite directions and the arc radius is 80-85mm, the hook portions are located at the two ends of the handle portion and are bent in opposite directions to each other, the base width of the convex rib is 5.5-5.7mm, and the thickness of the convex rib is 1.6-1.9mm.

[0014] Preferably, the hand-held portion extends in a straight line, and the hook portion includes an arc hook and a bent hook respectively located at both ends of the hand-held portion and bent back to back with each other, the arc radius of the arc hook is 80-85mm, the arc hook smoothly transitions to the hand-held portion through a first arc segment with an arc radius of 50mm, and the bent hook smoothly transitions to the hand-held portion through a second arc segment with an arc radius of 10mm, the base width of the convex rib is 5.5-5.8mm, and the thickness of the convex rib is 1.6-1.8mm.

[0015] Preferably, the hook portion is located at one end of the hand-held portion, and the other end of the hand-held portion is a free end. The arc radius of the hook portion is 50-80mm. The hook portion smoothly transitions to the hand-held portion through a third arc segment with an arc radius of 40mm. The base width of the convex rib is 6.2-6.4mm, and the thickness of the convex rib is 1.5-1.7mm.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] Compared with the stainless steel material of the existing medical retractor, the utility model is made of a new PEEK material and adaptively adjusts the conventional shape structure, thereby achieving the purpose of reducing weight, reducing costs and improving biocompatibility while ensuring the overall structural strength, and the subsequent market promotion effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the medical retractor described in the specific embodiment 1;

[0019] Figure 2 It is a schematic side view of the medical retractor described in the specific embodiment 1;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the medical retractor described in the specific embodiment 2;

[0021] Figure 4 It is a schematic side view of the medical retractor described in the specific embodiment 2;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the medical retractor described in specific embodiment 3;

[0023] Figure 6 It is a schematic side view of the structure of the medical retractor described in the specific embodiment 3;

[0024] Figure 7 It is a cross-sectional schematic diagram of the convex rib described in the specific implementation method. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Example

[0026] like Figure 1 , 2 As shown in Figure 7, a medical retractor comprises an integrally connected hand-held portion 1 and hook portions 2 located at both ends of the hand-held portion and bent back to back with each other, wherein both ends of the hand-held portion 1 in the length direction are bent back to back with the same curvature and the arc radius is 85 mm, and a plurality of anti-slip protrusion structures 4 are provided on the surface of the hand-held portion 1, and the anti-slip protrusion structures 4 are arranged in an array with equal spacing and the protrusion height relative to the surface of the hand-held portion 1 is 0.5 mm.

[0027] The medical retractor is made of PEEK material and is integrally formed. A convex rib 3 extending to the end point of the hook portion is provided on the retractor along its length direction. The area of ​​the base surface 31 of the convex rib 3 connecting the retractor is larger than the area of ​​the top free end surface 32. The free end surface 32 and the base surface 31 of the convex rib 3 are connected by a smooth transition of the arc surface, and the arc surface is S-shaped composed of two circumscribed arcs. The thickness of the convex rib 3 is 1.6-1.9mm, and the base surface width of the convex rib 3 is 5.5-5.7mm.

[0028] The medical retractor described in this embodiment mainly utilizes its smaller curved hook portion 2 to pull apart the cut surface skin, etc., so as to facilitate medical personnel to further dissect deep tissues, muscles, etc. Example

[0029] like Figure 3 , 4As shown in Figure 7, a medical retractor comprises a hand-held portion 1 extending in a straight line, and an arc hook 21 and a bent hook 22 which are integrally connected to the two ends of the hand-held portion 1 and bent back to back to each other, the arc radius of the arc hook 21 is 80 mm, the arc hook 21 smoothly transitions with the hand-held portion 1 through a first arc segment 23 with an arc radius of 50 mm, the bent hook 22 smoothly transitions with the hand-held portion 1 through a second arc segment 24 with an arc radius of 10 mm, and a plurality of anti-slip protrusion structures 4 are provided on the surface of the hand-held portion 1, the anti-slip protrusion structures 4 are arranged in an array with equal spacing and the convex height relative to the surface of the hand-held portion is 0.5 mm.

[0030] The medical retractor is made of PEEK material and is integrally formed. A convex rib 3 extending to the end points of the arc hook 21 and the bent hook 22 is provided on the retractor along its length direction. The area of ​​the base surface 31 of the convex rib 3 connecting the retractor is larger than the area of ​​the top free end surface 32. The free end surface 32 and the base surface 31 of the convex rib are connected by a smooth transition of the arc surface, and the arc surface is S-shaped composed of two circumscribed arcs. The base surface width of the convex rib 3 is 5.5-5.8mm, and the thickness of the convex rib is 1.6-1.8mm.

[0031] The medical retractor described in this embodiment has arc hooks and bent hooks of different sizes and specifications, wherein the arc hook with a large arc is used to retract deep abdominal organs and expose the required surgical site, and the bent hook can be used with the handheld part to retract deep tissues, muscles, etc. Example

[0032] like Figure 5 , 6 As shown in Figure 7, a medical retractor comprises a hand-held portion 1 extending in a straight line and a hook portion 2 integrally connected to one end of the hand-held portion, the other end of the hand-held portion is a free end, the arc radius of the hook portion 2 is 50 mm, the hook portion 2 smoothly transitions with the hand-held portion 1 through a third arc segment 25 with an arc radius of 40 mm, a plurality of anti-slip protrusion structures 4 are provided on the surface of the hand-held portion 1, the anti-slip protrusion structures 4 are arranged in an array with equal spacing and the convex height relative to the surface of the hand-held portion 1 is 0.5 mm.

[0033] The medical retractor is made of PEEK material and is integrally formed. The retractor is provided with a convex rib extending to the end point of the hook portion and the free end of the hand-held portion along its length direction. The area of ​​the base surface 31 of the convex rib 3 connecting the retractor is larger than the area of ​​the top free end surface 32. The free end surface 32 and the base surface 31 of the convex rib 3 are connected by a smooth transition of the arc surface, and the arc surface is S-shaped composed of two circumscribed arcs. The base surface width of the convex rib is 6.2-6.4mm, and the thickness of the convex rib is 1.5-1.7mm.

[0034] The medical retractor described in this embodiment has a relatively small size and is relatively more flexible and convenient to operate.

Claims

1. A medical retractor, comprising a hand-held portion and a hook portion connected in one piece, characterized in that: The medical retractor is made of PEEK material and is integrally formed, and a convex rib is provided on one side of the retractor; the convex rib extends to both ends of the retractor along the length direction of the retractor; the base surface area of ​​the convex rib connecting the retractor is larger than the area of ​​the top free end surface, the free end surface and the base surface of the convex rib are connected by a smooth transition of the arc surface, and the arc surface is S-shaped composed of two circumscribed arcs.

2. The medical retractor according to claim 1, characterized in that: The surface of the hand-held part is provided with a plurality of anti-slip protrusion structures.

3. The medical retractor according to claim 2, characterized in that: The anti-slip protrusion structures are arranged in an array with equal spacing and have a protrusion height of 0.5 mm relative to the surface of the handheld portion.

4. The medical retractor according to any one of claims 1 to 3, characterized in that: The two ends of the hand-held part in the length direction are curved with the same curvature in opposite directions and the arc radius is 80-85mm. The hook parts are located at the two ends of the hand-held part and are bent in opposite directions to each other. The base width of the convex rib is 5.5-5.7mm, and the thickness of the convex rib is 1.6-1.9mm.

5. The medical retractor according to any one of claims 1 to 3, characterized in that: The hand-held portion extends in a straight line, and the hook portion includes an arc hook and a bent hook respectively located at two ends of the hand-held portion and bent back to back with each other, the arc radius of the arc hook is 80-85mm, the arc hook smoothly transitions to the hand-held portion through a first arc segment with an arc radius of 50mm, and the bent hook smoothly transitions to the hand-held portion through a second arc segment with an arc radius of 10mm, the base width of the convex rib is 5.5-5.8mm, and the thickness of the convex rib is 1.6-1.8mm.

6. The medical retractor according to any one of claims 1 to 3, characterized in that: The hook portion is located at one end of the hand-held portion, and the other end of the hand-held portion is a free end. The arc radius of the hook portion is 50-80 mm. The hook portion smoothly transitions to the hand-held portion through a third arc segment with an arc radius of 40 mm. The base width of the convex rib is 6.2-6.4 mm, and the thickness of the convex rib is 1.5-1.7 mm.

Images