CN105078551A - Bone marrow puncture needle - Google Patents

Abstract

The invention discloses a bone marrow puncture needle, which comprises a puncture needle body, a semicircular angle frame, a sleeve, a fixing plate and an auxiliary plate, wherein the puncture needle body is composed of an outer sleeve, a needle core and a needle handle; a needle core fixing clamping groove is formed in the upper part of the needle handle; a needle core handle is arranged at the top of the needle core; a needle core fixing clamping core is arranged between the needle core handle and the needle core; a dial and an arc-shaped clamping groove are arranged on the semicircular angle frame; the sleeve is sleeved with the outer pipe casing of the puncture needle body by virtue of a screw thread; the sleeve is connected to a nut by virtue of a shaft; the shaft runs through the arc-shaped clamping groove in the semicircular angle frame; the puncture needle body is connected to the semicircular angle frame by virtue of the sleeve; a puncture hole is formed in the fixing plate; and the fixing plate is movably connected to the auxiliary plate. By virtue of the semicircular angle frame, medical personnel can observe a puncture angle when carrying out puncture, so as to reduce puncture risk; by adding a scale mark on the outer pipe casing, the length of inserting needle can be accurately mastered, and force can be controlled more easily especially for patients with relatively hard or relatively loose bone, so as to avoid injury on tissues surrounding a punctured part.

Description

a bone marrow aspiration needle

technical field

The invention relates to the field of medical instruments, in particular to a bone marrow puncture needle.

Background technique

At present, the bone marrow puncture needles used clinically are mainly composed of a needle body, a needle handle, and a needle core. When performing bone marrow puncture, clinicians need to hold the needle body and puncture with force. The puncture process is time-consuming and laborious, especially for hard or For looser patients, it is difficult to control the strength, and it is easy to insert the needle too long or cause damage to the surrounding tissues, and the puncture angle cannot be well grasped during puncture, especially the sternal puncture is more difficult, the risk is higher, and the needle core is not well fixed.

Contents of the invention

In summary, the purpose of the present invention is to provide a bone marrow puncture needle.

The purpose of the present invention is achieved by the following technologies:

A bone marrow puncture needle, including a puncture needle body, a semicircular angle frame, a sleeve, a fixing plate and an auxiliary plate, the puncture needle body is composed of an outer sleeve, a needle core, and a needle handle, and a needle core is arranged above the needle handle Fixed card slot; needle core handle is provided on the top of the needle core; needle core fixed card core is provided between the needle core handle and the needle core; a dial and an arc-shaped card slot are arranged on the semicircular angle frame; the casing Threaded socket with the outer sleeve of the puncture needle; the sleeve is connected with the nut through the shaft; the shaft passes through the arc-shaped slot on the semicircular angle frame; the puncture needle is connected with the semicircle angle frame through the sleeve; the fixing plate There are puncture holes on the top; the fixed plate and the auxiliary plate are flexibly connected.

The above-mentioned outer tube sleeve is provided with a scale line.

The initial scale of the scale line on the above-mentioned outer sleeve is aligned with the upper end face of the sleeve.

Advantage of the present invention and beneficial effect:

1. The present invention adds a semicircular angle frame, which saves time and effort in the puncture process, especially in the overshoot of puncture, it is easier for patients with hard or loose bone to grasp the strength, and the puncture can be observed during the puncture. angle, reducing the risk of punctures.

2. In the present invention, a scale line is added on the outer sleeve, so that the length of the needle can be accurately grasped, and the damage to the surrounding tissue of the puncture site can be avoided.

3. The invention is easy to operate, saves time and effort, is more effective and safer, and is suitable for popularization.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

In the figure: 1-needle fixed core, 2-needle handle, 3-axis, 4-dial, 5-nut, 6-arc slot, 7-outer sleeve, 8-needle handle, 9- Needle core fixing slot, 10-scale line, 11-sleeve, 12-semicircular angle frame, 13-needle core, 14-puncture hole, 15-fixing plate, 16-auxiliary plate.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, a bone marrow puncture needle comprises a puncture needle body, a semicircular angle frame 12, a sleeve 11, a fixing plate 15 and an auxiliary plate 16, and the puncture needle body is composed of an outer sleeve 7, a needle core 13, The needle handle 2 is composed of a needle core fixing slot 9 above the needle handle 2; a needle core handle 8 is provided on the top of the needle core 13; a needle core fixing clamp 1 is provided between the needle core handle 8 and the needle core 13; The semicircular angle frame 12 is provided with a dial 4 and an arc-shaped slot 6; the sleeve 11 is threadedly connected with the outer sleeve 7 of the puncture needle body; the sleeve 11 is connected with the nut through the shaft 3; 3 Pass through the arc-shaped slot 6 on the semicircular angle frame 12; the puncture needle body is connected with the semicircle angle frame 12 through the sleeve 11; the fixed plate 15 is provided with a puncture hole 14; the fixed plate 15 and the auxiliary plate 16 are movable connect.

A scale line 10 is provided on the outer sleeve 7 .

The initial scale of the scale line 10 on the outer sleeve 7 is aligned with the upper end surface of the sleeve 11 .

Example

The dial 4 is set on the semicircular angle frame 12, and the appropriate needle entry angle can be selected according to the puncture site during puncturing, and the outer tube cover 17 of the puncture needle body 7 is provided with a scale, which can be connected with the cover through the outer tube cover 17. The displacement 11 between the tubes 11 can accurately read the length of the needle, which makes the puncture safer.

The needle core 13 is fixed through the needle core fixing slot 9 on the needle handle 2 by occlusion, so the needle core 13 is not easy to come out. Place the fixed plate 15 on the puncture site of the patient, when the needle head of the puncture needle body 7 passes through the puncture hole 14 on the fixed plate 15, adjust the puncture angle through the arc-shaped slot 6 on the semicircular angle frame 12, When the needle insertion position is selected, the puncture needle body 7 can be pierced into the bone marrow cavity only by rotating the needle handle 2 .

The connecting portion between the fixed plate 15 and the auxiliary plate 16 can move.

If the ilium is punctured, at this time, the hard fixation plate 15 can be placed close to the sterilized skin, and the auxiliary plate 16 can be folded to form a groove between the two, which can be stuck on the ilium, and then follow the above-mentioned embodiment Puncture can be performed.

If puncture is performed at the sternum, only the fixing plate 15 needs to be close to the sternum, and the angle can be adjusted to perform puncture according to the above-mentioned embodiment.

Claims (3)

1. a marrow puncture needle, comprise puncture needle body, semicircle angle frame (12), sleeve pipe (11), fixing head (15) and accessory plate (16), it is characterized in that: puncture needle body is made up of outer tube sleeve (7), nook closing member (13), needle handle (2), and the top of needle handle (2) is provided with nook closing member fixed card slot (9); The top of nook closing member (13) is provided with nook closing member handle (8); Be provided with nook closing member between nook closing member handle (8) and nook closing member (13) and fix the core of the card (1); Described semicircle angle frame (12) is provided with graduated disc (4) and arc-shaped slot (6); Described sleeve pipe (11) is socketed with outer tube sleeve (7) screw thread of puncture needle body; Sleeve pipe (11) is connected with nut (5) by axle (3); Axle (3) is through the arc-shaped slot (6) on semicircle angle frame (12); Puncture needle body is connected with semicircle angle frame (12) by sleeve pipe (11); Fixing head (15) is provided with puncturing hole (14); Fixing head (15) is flexibly connected with accessory plate (16).

2. marrow puncture needle as claimed in claim 1, is characterized in that: described outer tube sleeve (7) is provided with graduation mark (10).

3. marrow puncture needle as claimed in claim 2, is characterized in that: the start index of the graduation mark (10) in described outer tube sleeve (7) is alignd with the upper surface of sleeve pipe (11).