CN209107552U - Medical medicine injection screw - Google Patents

Abstract

The utility model provides a threaded nail for medical injection, which comprises a nail body, the nail body is cylindrical, the surface of the nail body is provided with a raised thread, and one end of the nail body gradually shrinks to form a pen-shaped nail tip. The end of the other end of the body is expanded to form a spherical nail cap, the end of the nail cap is provided with a core rod mouth, the center line of the core rod mouth and the center line of the nail body are on the same line, and the nail body at one end of the nail tip is provided with opposite holes on both sides. There is a mandrel in the nail body, one end of the mandrel passes through the mouth of the mandrel to form a control end, the other end of the mandrel is connected with a horizontal den, both ends of the horizontal den are located in the corresponding lateral holes, and the end of the horizontal den is located in the corresponding lateral hole. Protruding from the lateral hole surface, its protruding portion is tapered. After adopting the scheme, the structure is reasonable, the use effect is good, and the operation is convenient.

Description

A kind of medical injection screw

technical field

The utility model relates to the technical field of medical devices, in particular to a medical drug injection screw.

Background technique

Most of the existing medical threaded screws are solid structures, which can only play a role in fixing. However, many patients need to inject medicinal liquid into the fixation site after bone fixation. cause secondary pain to the patient.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide a medical injection screw with reasonable structure, good use effect and convenient operation.

In order to achieve the above purpose, the technical scheme provided by the present utility model is as follows: a medical drug injection screw nail, which comprises a nail body, the nail body is cylindrical, the surface of the nail body is provided with a raised thread, and one end of the nail body is The end of the nail gradually shrinks to form a pen-shaped nail tip, the other end of the nail body expands to form a spherical nail cap, the end of the nail cap is provided with a core rod mouth, and the center line of the core rod mouth and the center line of the nail body are located on the same straight line. The two sides of the nail body at the pointed end are provided with opposite lateral holes, and a core rod is movably sleeved in the nail body. In the corresponding lateral hole, the transverse end protrudes from the surface of the lateral hole, and its protruding part is tapered.

The core rod and the transverse denier are all cylindrical, and a "T" shape is formed between the connected transverse denier and the core rod.

The transverse denier is V-shaped, and its V tip is connected to the core rod. The end of the fork arm of the transverse denier is horizontally bent outward to form an extension section, the extension section is located in the lateral hole, and the center line of the extension section is perpendicular to the center of the core rod. Wire.

After the utility model adopts the above scheme, the protruding end of the transverse denier is flush with the thread surface, so that when the screw enters, the transverse denier end will not scratch other parts. After the screw is fixed through the bone, the external forceps will The core rod and the horizontal den are pulled out together, and then the fixed part can be injected with medicine. The end of the horizontal den protrudes from the surface of the lateral hole, mainly to prevent the meat from blocking the lateral hole when entering; the structure after adopting this scheme Reasonable, effective and easy to operate.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a schematic diagram of the horizontal denier structure of the present invention.

Figure 3 is a schematic diagram of the connection between the horizontal denier and the core rod of the present invention.

Detailed ways

The present utility model will be further described below with reference to all the accompanying drawings. A preferred embodiment of the present utility model is as follows: referring to accompanying drawings 1 to 3 , a medical drug injection screw screw described in this embodiment includes a nail body 1, The nail body 1 is cylindrical, the surface of the nail body 1 is provided with a raised thread, one end of the nail body 1 gradually shrinks to form a pen-shaped nail tip 2, and the other end of the nail body 1 expands to form a spherical nail cap 3, The end of the nail cap 3 is provided with a core rod opening, the center line of the core rod opening and the center line of the nail body 1 are located on the same straight line, the two sides of the nail body 1 at one end of the nail tip 2 are provided with opposite lateral holes 4, and the nail body 1. A core rod 5 is set in the inner movable sleeve. One end of the core rod 5 passes through the core rod mouth to form a control end. The other end of the core rod 5 is connected with a horizontal denier 6. The end protrudes from the surface of the lateral hole 4, the protruding part is tapered, the core rod 5 and the horizontal denier 6 are cylindrical, and a "T" shape is formed between the connected horizontal denier 6 and the core rod 5, and the horizontal denier 6 It is V-shaped, its V-tip is connected with the core rod 5, the fork arm end of the transverse denier 6 is horizontally bent outward to form an extension section, the extension section is located in the lateral hole 4, and the center line of the extension section is perpendicular to the center line of the core rod 5. . In this embodiment, the protruding end of the transverse denier is flush with the thread surface, so that when the screw enters, the transverse denier end will not scratch other parts. Pull it out, and then you can inject medicine into the fixed part, and the end of the transverse dan protrudes from the surface of the lateral hole, mainly to prevent the meat from blocking the lateral hole when entering; the structure of this embodiment is reasonable and the use effect is good. , Easy to operate.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made according to the shape and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (3)

1. a kind of Medical injection drive screw, it includes rivet nut (1), it is characterised in that: rivet nut (1) is cylindrical, rivet nut (1) table Face is equipped with the screw thread of protrusion, and rivet nut (1) one end end gradually tapers up the nail tip (2) to form pen tip shape, rivet nut (1) other end end Extension forms the spherical head of a nail (3), and the head of a nail (3) end is provided with core bar mouth, and center line and rivet nut (1) center line of core bar mouth are located at On same straight line, rivet nut (1) two sides of nail tip (2) one end are equipped with through sidewise hole (4), are movably installed with core in rivet nut (1) Bar (5), core bar (5) one end pass through core bar mouth and form control terminal, and core bar (5) other end is connected with horizontal denier (6), horizontal denier (6) both ends In corresponding sidewise hole (4), horizontal denier (6) end protrudes from sidewise hole (4) surface, and protrusion is tapered.

2. a kind of Medical injection drive screw according to claim 1, it is characterised in that: core bar (5), horizontal denier (6) are in circle Cylindricality is formed "T"-shaped between the horizontal denier (6) after connection and core bar (5).

3. a kind of Medical injection drive screw according to claim 1, it is characterised in that: horizontal denier (6) is V-shaped, V point and core Bar (5) connection, horizontal bending forms extended segment outward for the yoke end of horizontal denier (6), and extended segment is located in sidewise hole (4), extends Section central axis is in core bar (5) center line.