CN219439249U - Right-angle drag 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

Right-angle drag hook

Technical Field

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

Background

In surgery, especially in the case of bone surgery, medical staff often need to pull and strip off soft tissues outside bones, or pull open bones adjacent to the surgical site, so that the surgery can be performed normally, and a drag hook is needed at this time. The specific structure of the retractor is described in the patent text of Chinese patent publication No. CN212755749U, which is named as a retractor for orthopedic clinical surgery, and Chinese patent publication No. CN212996555U, which is named as a retractor assembly for orthopaedics, and the retractor is mostly of an L-shaped rod structure with a hook head in an inward-flanging shape. When the surgical operation device is in operation, the hook head is inserted between soft tissues and/or bones, and after the other end of the hook head is held and pulled, the hook head is positioned at the outer bracket through a bolt, even a sliding block and other fixing structures, so that the purposes of expanding the surgical field and facilitating the surgery are achieved, and the following problems exist: firstly, for the inward flanging-shaped hook head, the requirement on the hooking angle is high, and the detachment phenomenon is easy to occur when soft tissues or bones are pulled and peeled; especially, the skeleton itself is harder, and closely contacts with soft tissue, and the drag hook of L type rod type structure is difficult for accurate convenient taking the location of skeleton more, has certain operation inconvenience. Secondly, because of using rigid fixing modes such as bolts or sliding blocks, the flexibility of the traction direction is small, and the adjustment flexibility of the traction angle is poor; in the operation process, deep soft tissues and even bones are often pulled, the drag hook is required to be in a certain inclination angle state and is required to be adjusted at any time according to the situation of the site, and the traditional drag hook with rigid fixation is single in angle and cannot meet the flexible use requirement. Whether a drag hook with reasonable structure can be developed, especially the quick and stable hooking effect on bones can be ensured, and the flexible adjustment performance of multiple traction angles is ensured, which is a technical problem to be solved in recent years in the field.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the drag hook which not only can ensure the rapid and stable hooking effect on bones, but also can be matched with the existing positioning frame, ensures the flexible on-line adjustment function of traction angle, and can effectively improve the actual operation efficiency.

The right angle drag hook provided by the utility model comprises: the retractor comprises a retractor body, a retractor body and a retractor body, wherein the retractor body comprises a holding part, a transition part and a working part which are sequentially arranged, 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 bent inwards towards the holding part so as to form an inserting head for inserting a tissue gap at the bent part; the tail part of the holding part is provided with a threading hole through which the traction rope can pass.

Preferably, the holding part is in a flat strip shape, the threading hole penetrates through the surface of the holding part, and the wall of the threading hole is concavely provided with a wire drawing groove for positioning the traction rope.

Preferably, the length direction of the pull wire groove is parallel to the axis of the threading hole.

Preferably, the number of the threading holes is 2-3, and the threading holes are round holes.

Preferably, the surface of the strip-shaped holding part is provided with anti-skid patterns.

Preferably, the angle between the transition part and the holding part is 120 degrees, and the angle between the working part and the transition part is 90 degrees.

Preferably, the cross section of the transition part is arc-shaped with an opening facing the direction of the holding part, and the end part connected with the holding part and the working part is in smooth transition.

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

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

1) According to the technical scheme, on one hand, the retractor main body formed by the three-section structure is used for ensuring specific traction requirements on bones. When in use, medical staff inserts the gap between soft tissues and bones by using the plug connector of the working part, and the bones can be clamped in the groove-shaped hook head at the head end of the drag hook main body by using the design of the transition part, thereby achieving the effect of rapid and stable hooking. On the other hand, after the hooking operation is finished, the utility model does not use a rigid fixing mode any more, uses the traction rope as a flexible traction strategy, relies on the traction rope to pass through the threading hole for positioning, and is matched with the traditional positioning frame or other positioning apparatuses as external fixing equipment, thereby finally achieving the traction purpose of a specified angle. Because the traction rope is used for traction, the traction angle can be realized only by controlling the tying point at the other end of the traction rope, the multi-angle flexible adjustment is realized, the use is very convenient, and the actual operation efficiency can be obviously and effectively improved.

2) As a further preferable scheme of the scheme, the pulling groove is arranged, so that when a skeleton or soft tissue is pulled, the pulling rope is tied at the pulling groove, the fixing of the pulling rope can be ensured to be firmer, the pulling rope cannot slide in the threading hole, and the pulling rope is safer and more reliable to use.

3) For the threading holes, two to three are preferable, so that the traction purpose of the multi-rope body is realized through the arrangement of a plurality of holes; if two hauling ropes simultaneously hauling the utility model, the working state of the utility model is more stable. Meanwhile, theoretically, the wire drawing groove can be a chute or other types of groove bodies; the utility model is preferably a straight slot, and aims to avoid the sliding condition of the hauling rope possibly generated along the circumferential direction of the threading hole as far as possible, maximize the use reliability and achieve remarkable effect.

Drawings

FIGS. 1 and 2 are schematic views of a preferred embodiment of the present utility model;

FIG. 3 is a schematic structural view of a transition portion;

FIG. 4 is an enlarged partial view of portion a of FIG. 1;

fig. 5 is a cross-sectional view taken along the direction A-A of fig. 2.

Reference numerals in the drawings:

10-drag hook main body; 11-a grip; 111-threading holes; 112-a pull wire groove; 12-working part; 121-a plug; 13-transition.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Specific implementations of the utility model are described in detail below in connection with specific embodiments.

Referring to fig. 1 to 5, a right angle retractor according to an embodiment of the present utility model includes a retractor body 10; the retractor body 10 includes a grip portion 11, a working portion 12, and a transition portion 13.

In design, one end of the transition part 13 is a holding part 11, the other end is a working part 12, namely, the working part 12 and the holding part 11 are in transition traction connection through the obliquely arranged transition part 13 as shown in fig. 1-2, and a plug-in connector 121 which is inserted into a tissue gap is inwards bent towards the head end of the holding part 11 by the working part 12.

In practical use, take bone external pulling as an example: after the medical staff disinfects the utility model, holding part 11 is held, working part 12 and transition part 13 are cut into the specific part needing operation, such as knee joint or ankle meniscus, then the insertion joint 121 of working part 12 is used for inserting into the gap between soft tissue and bone, then the utility model is slightly rotated, the curved transition part 13 is ensured to span the bone needing stripping, at the moment, the whole head hook clamps the bone in the hook head area, and then the bone is stripped from the operation part by pulling holding part 11. After the operation is peeled to the designated position, the holding part 11 is fixed by passing the traction rope through the passing hole 111, thereby facilitating the operation and improving the operation efficiency.

In the embodiment of the utility model, referring to fig. 1 and 4, the holding portion 11 is in a flat strip shape, the surface of the strip shape is provided with anti-skid patterns, and the tail end of the holding portion 11 is provided with a threading hole 111. The number of the threading holes 111 is 2-3, two threading holes 111 are shown in fig. 1-2, and the threading holes 111 are in a round hole shape. In design, the hole wall of the circular hole 111 is uniformly provided with a plurality of wire drawing grooves 112, as shown in fig. 4, so as to ensure the positioning effect on the traction rope.

In addition, the grip 11 may be considered to be provided with anti-slip patterns, which increases friction force, and facilitates the medical staff to hold the grip 11 for the operation of peeling. After pulling and stripping, the pulling rope passes through the threading hole 111, and the tying point position of the outer end of the pulling rope relative to the positioning frame and the like is flexibly adjusted according to the direction of the pulling rope, so that the angle adjustment requirement is realized. The inner end of the traction rope is clamped in the fixed stay wire groove 112, so that the holding part 11 can be stably pulled.

Further, as shown in fig. 1-3, the grip portion 11 and the transition portion 13 are bent, the bending angle is 120 °, and the working portion 12 and the transition portion 13 are vertically disposed, that is, the angle is 90 °. Thus, when the soft tissue or the bone is peeled, the front end plug 121 of the working part 12 with an included angle of 90 degrees is used for being inserted into the gap between the soft tissue and the bone according to the direction of peeling, and then the transition part 13 with a bending angle of 120 degrees is further turned over for wrapping the bone or the soft tissue needing traction, so that the soft tissue or the bone is stably fixed and wrapped, and the subsequent traction peeling operation is convenient.

In actual operation, the insertion power and the stripping traction force of the working part 12 are transmitted by the main transition part 13, and in traction, the arc groove shape or crescent bending direction of the transition part 13 as shown in fig. 5 is more beneficial to the transmission of traction force and the positioning and traction of soft tissues and bones.

The whole drag hook main body 10 can be made of a 2cr13 material plate, and the heat treatment hardness is 44-48 HRC, so that the drag hook main body can meet the traction strength by heat treatment of chromium-containing stainless steel, and is not easy to break in the traction process. Meanwhile, the whole right-angle drag hook is provided with fillets or passivation treatment except for the plug 121, and the surface is smooth and free of defects.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

The technology, shape, and construction parts of the present utility model, which are not described in detail, are known in the art.

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.