CN219439249U - a right-angle hook - Google Patents

Abstract

The utility model relates to the technical field of medical instruments, in particular to a right-angle drag hook. The surgical retractor comprises a retractor body, wherein the retractor body comprises a holding part, a transition part and a working part which are sequentially arranged along the extending direction of the retractor body, the transition part is obliquely arranged so as to form an obtuse angle with the holding part, and the working part is arranged at the head end of the transition part and is inwards bent towards the holding part so as to form an insertion head for inserting into a tissue gap at the inwards bent part; the tail part of the holding part is provided with a threading hole through which the traction rope can pass. The utility model not only can ensure the rapid and stable hooking effect on bones, but also can be matched with the existing locating frame, ensure the flexible on-line adjustment function of traction angle, and can effectively improve the actual operation efficiency.

Description

a right-angle hook

technical field

The utility model relates to the technical field of medical instruments, in particular to a right-angle hook.

Background technique

In surgery, especially when performing orthopedic surgery, medical staff usually need to pull and peel off the soft tissue outside the bone, or pull away the adjacent bones of the operation site, so that the operation can be carried out normally, and at this time, a retractor will be used. The specific structure of the retractor is in the patent text of the Chinese patent announcement number "CN212755749U" named "a retractor for orthopedic clinical operations" and the Chinese patent announcement number "CN212996555U" named "a retractor assembly for orthopedics" It has been described in , and most of the pull hooks are L-shaped rod structures with hook heads in the shape of inward flanging. When working, rely on inserting the hook head into the soft tissue and/or bone, the other end is held and pulled, and then positioned at the outer bracket through a fixed structure such as a bolt or even a slider, so as to achieve the purpose of expanding the surgical field and facilitating the operation. There are the following problems: First, for the inward-turned hook head, the angle of hooking is relatively high, and it is prone to detachment when the soft tissue is pulled or the bone is pulled and peeled; especially the bone itself is relatively hard, and it is in close contact with the soft tissue. Moreover, the L-shaped rod-type retractor is not easy to accurately and conveniently carry out the hooking and positioning of the bones, and there is a certain inconvenience in operation. Second, due to the use of rigid fixation methods such as bolts or sliders, the selectivity of the traction direction is small, and the flexibility of the adjustment of the traction angle is poor; and during the operation, deep soft tissues and even bones are often pulled, and the retractor needs to be in a certain position. The inclination state needs to be adjusted at any time according to the site conditions. The traditional rigid fixed hook has a single angle and cannot meet the needs of flexible use. Whether it is possible to develop a retractor with a reasonable structure, especially to ensure the fast and stable hooking effect on bones, and to ensure the flexible adjustment performance of multiple traction angles, is a technical problem to be solved urgently in this field in recent years.

Utility model content

In order to solve the above technical problems, the utility model provides a pull hook, which can not only ensure the fast and stable hooking effect on bones, but also cooperate with the existing positioning frame to ensure the flexible online adjustment function of the traction angle, which can effectively improve the actual operation. efficiency.

The right-angle hook provided by the utility model includes: a hook main body, along the extension direction of the hook main body, the hook main body includes a grip part, a transition part and a working part arranged in sequence, and the transition part is arranged obliquely so as to form an obtuse angle with the grip part, The working part is arranged at the head end of the transition part and bends inward toward the holding part to form a plug joint for insertion into the tissue gap; the tail of the holding part is provided with a threading hole for the traction rope to pass through.

Preferably, the gripping portion is in the shape of a flat strip, the threading hole runs through the surface of the gripping portion, and the hole wall of the threading hole is recessed with a cable groove for positioning the position of the traction rope.

Preferably, the long direction of the cable groove is parallel to the axis of the threading hole.

Preferably, there are 2 to 3 threading holes, and the threading holes are round holes.

Preferably, anti-slip lines are provided on the surface of the strip-shaped gripping portion.

Preferably, the angle between the transition part and the grip part is 120°, and the angle between the working part and the transition part is 90°.

Preferably, the cross-section of the transition portion is in the shape of an arc groove with its opening facing the direction of the gripping portion, and the end connecting the gripping portion and the working portion has a smooth transition.

Preferably, the hook main body is made of 2cr13 material plate, and the heat treatment hardness is 44-48HRC.

Compared with related technologies, the right-angle hook provided by the utility model has the following beneficial effects:

1) Through the above solution, on the one hand, relying on the main body of the retractor formed by the three-stage structure, in particular, the specific traction requirements for bones are ensured. When in use, the medical personnel insert the plug joint of the working part into the gap between the soft tissue and the bone, and use the design of the transition part to lock the bone in the groove-shaped hook head at the head end of the retractor main body, thus achieving fast and stable hooking. take effect. On the other hand, when the utility model completes the hooking operation, the rigid fixing method is no longer used, and the traction rope is used as a flexible traction strategy instead, relying on the traction rope for the positioning purpose of the threading hole, and cooperating with the traditional positioning frame or other positioning As an external fixed device, the instrument finally achieves the purpose of traction at a specified angle. Since the traction is performed by the traction rope, the traction angle can be realized only by controlling the attachment point at the other end of the traction rope. It can be flexibly adjusted at multiple angles and is very convenient to use. Obviously, it can effectively improve the actual operation efficiency.

2), as a further preferred solution of the above-mentioned solution, the setting of the cable groove makes the traction rope knotted at the cable groove when pulling the bone or soft tissue, which can ensure that the traction rope is fixed more firmly and will not slide in the threading hole, It is safer and more reliable to use.

3), for threading hole, preferably two to three, thereby realize the traction purpose of multi-rope body by the arrangement of a plurality of holes; The state will be more stable. At the same time, in theory, the cable trough can be a chute or other types of troughs; the utility model is preferably a straight trough, and the purpose is to avoid as much as possible the sliding condition of the traction rope along the circumference of the threading hole, and to maximize its use. Reliable and effective.

Description of drawings

Fig. 1 and Fig. 2 are the structural representations of a kind of preferred embodiment of the present utility model;

Fig. 3 is the structural representation of transition part;

Fig. 4 is a partially enlarged view of part a of Fig. 1;

Fig. 5 is a cross-sectional view along line A-A of Fig. 2 .

Labels in the figure:

10-retractor main body; 11-grip part; 111-threading hole; 112-guy groove; 12-working part; 121-plug connector; 13-transition part.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be 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 intended to limit the utility model.

The specific implementation of the utility model is described in detail below in conjunction with specific embodiments.

Please refer to FIG. 1 to FIG. 5 , the right-angle hook provided by the embodiment of the utility model includes a hook main body 10 ; the hook main body 10 includes a gripping part 11 , a working part 12 and a transition part 13 .

When designing, one end of the transition part 13 is the grip part 11, and the other end is the working part 12, that is, the transition part 13, which is inclined as shown in Figure 1-2, is used for transitional traction between the working part 12 and the grip part 11. connected, and the working part 12 is bent inward toward the head end of the gripping part 11 to be provided with a plug joint 121 inserted into the interstitial space.

In actual use, take bone pulling as an example: after sterilizing the utility model, the medical personnel hold the grip part 11, and cut the working part 12 and the transition part 13 into a specific part requiring surgery, such as the knee joint or the ankle At the meniscus, then use the plug joint 121 of the working part 12 to insert into the gap between the soft tissue and the bone, and then turn the utility model slightly to ensure that the curved transition part 13 spans the bone that needs to be stripped. Get stuck in the area of the hook head, then pull the grip 11 to peel the bone away from the surgical site. After peeling off to the designated position, the grip part 11 is fixed through the passing hole 111 through the traction rope, thereby facilitating the operation and improving the operation efficiency.

In the embodiment of the present utility model, please refer to Fig. 1 and Fig. 4, the grip part 11 is in the shape of a flat slat, and the anti-skid pattern is provided on the slat-like surface, and the tail end of the grip part 11 is provided with Threading hole 111. There are 2 to 3 threading holes 111, two are shown in Fig. 1-2, and the threading holes 111 are round holes. During design, the hole wall of the circular hole-shaped threading hole 111 is uniformly provided with a plurality of pull wire grooves 112, as shown in FIG. 4, to ensure the positioning effect of the traction rope.

In addition, the grip part 11 may be provided with anti-skid lines to increase the frictional force and facilitate the medical staff to hold the grip part 11 for gripping and peeling operations. After pulling and stripping, by using the traction rope to pass through the threading hole 111, and according to the direction of the traction rope, flexibly adjust the position of the attachment point of the outer end of the traction rope relative to the positioning frame, etc., to realize the angle adjustment requirement. The inner end of the traction rope is stuck in the fixed cable groove 112, so as to facilitate the stable traction of the gripping portion 11.

Further, as shown in Figures 1-3, the grip portion 11 and the transition portion 13 are bent and set at a bending angle of 120°, and the working portion 12 and the transition portion 13 are vertically set, that is, the angle is 90°. °. In this way, when the soft tissue or bone is stripped, according to the desired stripping direction, the insertion joint 121 at the front end of the working part 12 with an included angle of 90° is inserted into the gap between the soft tissue and the bone, and then further turned over at a certain angle so that the bending angle is 120° The transition part 13 wraps the bone or soft tissue that needs to be pulled, so as to facilitate the stable and fixed wrapping of the soft tissue or bone, and facilitate the subsequent pulling and stripping operation.

During actual operation, the insertion power and peeling traction force of the working part 12 are mainly transmitted by the transition part 13, and during traction, the arc groove shape or crescent-shaped bending direction of the transition part 13 as shown in Figure 5 is more conducive to The transmission of traction facilitates the positioning and pulling of soft tissues and bones.

The whole drag hook body 10 can be made of 2cr13 material plate, and the heat treatment hardness is 44-48HRC. In this way, the chromium-containing stainless steel is used for heat treatment, so that it can meet the strength of traction, and it is not easy to break during the traction process. At the same time, except for the plug connector 121 , other parts of the entire right-angle hook are provided with rounded corners or passivation treatment, and the surface is smooth and free of defects.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

The technologies, shapes and construction parts not described in detail in the utility model are all known technologies.

Claims (8)

1. A right angle retractor, comprising a retractor body (10), characterized in that: along the extending direction of the drag hook main body (10), the drag hook main body (10) comprises a holding part (11), a transition part (13) and a working part (12) which are sequentially arranged, wherein the transition part (13) is obliquely arranged so as to form an obtuse angle with the holding part (11), and the working part (12) is arranged at the head end of the transition part (13) and is inwards bent towards the holding part (11) so as to form a plug-in connector (121) for being inserted into a tissue gap at the inwards bent position; the tail part of the holding part (11) is provided with a threading hole (111) through which the traction rope can pass.

2. The right angle retractor of claim 1 wherein: the holding part (11) is in a flat strip plate shape, the threading hole (111) penetrates through the surface of the holding part (11), and a wire pulling groove (112) for positioning the traction rope is concavely formed in the hole wall of the threading hole (111).

3. The right angle retractor of claim 2 wherein: the length direction of the pull wire groove (112) is parallel to the axis of the threading hole (111).

4. The right angle retractor of claim 3 wherein: 2-3 threading holes (111) are formed, and the threading holes (111) are in a round hole shape.

5. The right angle retractor of claim 2, 3 or 4 wherein: the surface of the strip-shaped holding part (11) is provided with anti-skid patterns.

6. The right angle retractor of claim 1 or 2 or 3 or 4 wherein: the angle between the transition part (13) and the holding part (11) is 120 degrees, and the angle between the working part (12) and the transition part (13) is 90 degrees.

7. The right angle retractor of claim 5 wherein: the cross section of the transition part (13) is arc-shaped in an arc groove with an opening facing the direction of the holding part, and the end parts connected with the holding part (11) and the working part (12) are in smooth transition.

8. The right angle retractor of claim 1 or 2 or 3 or 4 wherein: the retractor main body (10) is made of a 2cr13 material plate, and the heat treatment hardness is 44-48 HRC.