CN202637005U - Medical maxilla operation drag hook - Google Patents

Abstract

The utility model discloses a medical retractor for maxillary surgery, which comprises a hook head, a hook handle, a handle and an intermediate connector; The front end of the hook handle is connected; the front side of the hook head has an inward recess, which can make the hook head stably fixed on the nasal crest during maxillary osteotomy, so that the overall retractor will not slip during the operation; and the hook head It is tilted outward to maximize the exposure of the operating area and protect the surrounding tissues, which can greatly reduce the accidental damage of surgical instruments to the nasal mucosa, bone and even the tracheal tube. Both the rear end surface of the hook handle and the handle are connected with the intermediate connecting piece. Both sides of the front part of the hook handle are curved inward to form arc-shaped flanks, which can well protect the nasal mucosa. The utility model conforms to the physiological and anatomical structures of the maxilla and the nasal cavity, and has compact overall design, simple manufacture, easy and convenient use, comfortable and beautiful operation, and no discomfort in the patient's skin tissue.

Description

A medical retractor for maxillary surgery

technical field

The utility model relates to the field of medical equipment, in particular to a retractor used in human maxillary surgery. the

Background technique

In hospital craniomaxillofacial surgery or oral maxillofacial surgery involving maxillary surgery, such as maxillary Lefort I osteotomy or maxillary anterior osteotomy, it is often necessary for the surgeon or assistant to expose the nasal side of the maxilla clearly , in order to operate the medical equipment, and then apply the power system, use the ball drill, split drill or reciprocating saw, oscillating saw to perform osteotomy or bone grinding operation. Because this part is connected to the nasal mucosa, and because of the need for anesthesia, the endotracheal tube is placed in the nasal cavity on one side. Therefore, during osteotomy, assistants need to use cumbersome methods to expose the operative area; what’s more, when performing maxillary anterior osteotomy, there are often no special instruments to pull the entire nasal mucosa away for protection, and the operative field cannot be opened. Clearly exposed, the doctor only performs osteotomy based on experience, blind sight, and hand feeling, which often causes excessive bleeding, damages the surrounding tissue structure, and affects the progress of the operation. And among the retractors that exist clinically at present, none of the retractors can be stably fixed on the bone crest. the

Utility model content

The purpose of the utility model is to overcome the deficiencies and defects of the existing clinical medical drag hooks. It can be stably fixed on the bone crest after maxillary nasal cavity surface osteotomy, creating space for the osteotomy under direct vision, and at the same time, it can well protect the nasal mucosa and surrounding tissues, especially suitable for the exposure of the nasal cavity surface in maxillary osteotomy and protection. the

The utility model discloses a medical retractor for maxillary surgery, comprising a hook head, a hook handle, a handle and an intermediate connector. the

The hook handle is an integrated structure composed of the rear connecting rod and the front sheet structure; wherein, the rear end surface of the rear connecting rod is circular, and gradually transitions from a cylindrical shape to a sheet structure from the rear end to the front end of the connecting rod, and the connecting rod The front end is joined with the rear end of the front sheet structure. And the front sheet structure is relatively inwardly bent by 90° with the rear connecting rod. hollow out. the

The hook head has a sheet structure, the rear side of the hook head is connected with the front end surface of the hook handle; the hook head is inclined outward, and the front side of the hook head has an inward recess. the

During jaw surgery, the retractor can be stably positioned on the maxillary nasal bone ridge by recessing the front side of the hook head, so that the inner side of the front part of the hook handle can fit the nasal mucosa, and the front part of the hook handle can be adjusted by lifting the handle up. Pull the soft tissue of the nasal cavity to the rear. the

The utility model has the advantages of:

1. The medical maxillary retractor of this utility model can be stably fixed on the nasal cavity and facial bone ridge after maxillary osteotomy, and at the same time, the nasal mucosa and other tissues can be completely protected behind the retractor, enabling clinicians to realize safe operation under direct vision , Simplify the operation of blind sight based on experience and hand feeling into a simple operation with direct vision, which reduces the difficulty of operation, improves the efficiency of operation, reduces operation time and intraoperative bleeding, and reduces accidental damage to the nose and palate during operation risk of mucous membrane, bone around pyriform hole and even anesthesia intubation;

2. The medical retractor for maxillary surgery of this utility model is suitable for all operations involving maxillary osteotomy that need to expose and protect the tissue structure existing on the nasal surface;

3. The design of the medical retractor for maxillary surgery of the utility model conforms to the physiological and anatomical structure of the maxilla and nasal cavity, and the overall design is compact, easy to manufacture, easy to use, comfortable and beautiful to operate, and the patient's skin tissue has no discomfort. the

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the overall structure of the medical maxillary surgery retractor of the present utility model;

Fig. 2 is a schematic side view of the overall structure of the medical maxillary surgery retractor of the utility model;

Fig. 3 is a cross-sectional schematic view of the front part of the hook handle in the medical maxillary surgery retractor of the utility model;

Fig. 4 is a schematic diagram of the actual operation mode of the medical maxillary surgery retractor of the present invention. the

In the picture:

1-hook head 2-hook handle 3-handle 4-intermediate connector 101-recess 201-curved flanks

Detailed ways

The utility model is a medical retractor for maxillary surgery, which is an integrated structure composed of a hook head 1, a hook handle 2, a handle 3 and an intermediate connector 4, as shown in Figure 1; the hook head 1 is connected with the hook handle 2, and the hook handle 2 and the handle 3 are connected through an intermediate connecting piece 4. The specific structure and connection method of hook head 1, hook handle 2, handle 3 and intermediate connector 4 are as follows:

The hook handle 2 is an integral structure composed of the rear connecting rod and the front sheet structure; wherein, the rear end surface of the rear connecting rod is circular, as shown in Figure 2, gradually from the rear end to the front end of the rear connecting rod. The shape transition is a sheet structure, and the front end of the rear connecting rod is smoothly joined with the front sheet structure; and the front sheet structure is curved 90° smoothly inwardly relative to the rear connecting rod, so that a 90° angle is formed between the front and rear of the hook handle 2. ° Angle. The both sides of the front portion of the hook handle 2 are curved inwardly to form an arc, thereby forming arc flanks 201 with a radian θ of 30° on both sides of the front portion of the hook handle 2, as shown in Figure 3; The continuous transition mode is adopted between the rear parts of handle 2, as shown in Fig. 2 . the

The hook head 1 is a sheet structure, the rear side of the hook head 1 is joined with the front end surface of the hook handle 2 to form one body, and the width of the hook handle part between the two arc-shaped wings in the hook handle 2 is the same as that of the rear side of the hook head 1. equal. The hook head 1 is inclined outward, forming an included angle Ф of 145° with the hook handle. There is also an inward recess 101 at the front side of the hook head 1, and the recess 101 forms a "V"-shaped structure,

Both the rear end surface of the hook handle 2 and the handle 3 are integrated with the intermediate connector 4, so that the joint between the hook handle 2 and the intermediate connector 4 is opposite to the joint between the handle 3 and the intermediate connector 4, thus forming The overall structure of the draw hook, and the overall surface of the draw hook are smooth and smooth curved surfaces without hard turning and sharp edges. The user can hold the pull hook through the handle 3; in the utility model, the middle part of the handle 3 is designed as a hollow structure, and the intermediate connector 4 is designed as a ring structure, so that the user can effectively prevent the user from holding the pull hook during the process of holding the pull hook. The drag hook is dropped and damaged, and at the same time, the quality of the drag hook can be reduced to save costs. the

When using the retractor for jaw surgery of the utility model for jaw surgery, the retractor can be stably positioned on the maxillary nasal side bone ridge through the recess 101 in the front side of the hook head 1, so that the retractor will not slide during the operation. The inner side of the front part of the hook handle 2 fits the nasal mucosa. By lifting the handle 3, the front part of the hook handle 2 pulls the soft tissue of the nasal cavity to the rear, and the curved flanks on both sides of the front part of the hook handle 2 can touch the nasal mucosa. Protect the nasal mucosa so that it is not damaged by power systems such as grinding balls, as shown in Figure 4. Moreover, the hook head 1 is designed to be inclined outward, which can maximize the exposure of the operation area and protect the surrounding tissues, so that the operation can be performed under direct vision, which greatly reduces the accidental damage of surgical instruments to the nasal mucosa, bone and even tracheal intubation. the

Claims (10)

1. a medical maxillary osteotomy drag hook is characterized in that: comprise gib head, the neck of hook, handle and intermediate connector;

The integrative-structure of the neck of hook for being consisted of by rear portion connecting rod and anterior laminated structure; Wherein, the connecting rod front end engages with anterior laminated structure rear end; And anterior laminated structure relatively and 90 ° of rear portion connecting rod inflexions; Neck of hook front part sides limit bends to arc to the inside, forms the arc flank; Neck of hook rear portion end face and handle all link to each other with intermediate connector;

Gib head is laminated structure, and the back side edge of gib head links to each other with neck of hook front end face; Gib head is outward-dipping, and gib head front side edge place has the recessed of introversion.

2. a kind of medical maxillary osteotomy drag hook as claimed in claim 1, it is characterized in that: the radian of described arc flank is 30 °.

3. a kind of medical maxillary osteotomy drag hook as claimed in claim 1 is characterized in that: adopt continuously excessively mode between described arc flank and neck of hook rear portion.

4. a kind of medical maxillary osteotomy drag hook as claimed in claim 1, it is characterized in that: the interplane neck of hook partial width of described two curved side equates with the gib head back side edge.

5. a kind of medical maxillary osteotomy drag hook as claimed in claim 1, it is characterized in that: angle is 145 ° between described gib head and the neck of hook.

6. a kind of medical maxillary osteotomy drag hook as claimed in claim 1 is characterized in that: described recessed " V " type that is.

7. a kind of medical maxillary osteotomy drag hook as claimed in claim 1 is characterized in that: the junction of the described neck of hook and intermediate connector, and relative with the junction of handle and intermediate connector.

8. a kind of medical maxillary osteotomy drag hook as claimed in claim 1 is characterized in that: described handle middle part hollow out.

9. a kind of medical maxillary osteotomy drag hook as claimed in claim 1, it is characterized in that: described intermediate connector is circular ring structure.

10. a kind of medical maxillary osteotomy drag hook as claimed in claim 1, it is characterized in that: described gib head, the neck of hook, handle and intermediate connector surface are smoothly smoothly curved surface.

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