CN219183872U - Bone marrow extractor - Google Patents

Abstract

The utility model discloses a bone marrow extractor, which comprises a puncture needle and a needle cylinder, wherein the puncture needle comprises a needle head and a needle core matched with the needle head, a positioning guide plate is fixedly arranged in the circumferential direction of the middle part of the needle head, a silica gel anti-slip pad is arranged on the lower surface of the positioning guide plate in a covering manner, a vertical channel penetrating through the upper end and the lower end is arranged in the middle part of the needle head and used for accommodating the insertion of the needle core or the needle cylinder, and a liquid outlet communicated with the vertical channel is arranged on the side wall of one side of the needle head. According to the bone marrow extractor, the positioning guide plate and the silica gel anti-slip pad are arranged on the outer wall of the needle head in the circumferential direction, so that the bone marrow extractor not only can play a role in positioning a guide wire during needle insertion, but also can prevent a puncture needle from sliding; through set up the liquid outlet of joinable honeycomb duct and vacuum heparin tube on the syringe needle, when needs multitube bone marrow sample, need not to pull out the cylinder many times, can directly collect, easy operation is convenient.

Description

a bone marrow extractor

technical field

The utility model relates to the technical field of medical instruments, in particular to a bone marrow extractor.

Background technique

Bone marrow aspiration is a technique for extracting bone marrow for the identification and diagnosis of various blood diseases. It can be used for hematopoietic stem cell culture, cytogenetic analysis and pathogenic biological examination, etc., to assist clinical diagnosis, observe curative effect and judge prognosis.

When performing bone marrow aspiration, a bone marrow aspirator is used to extract the bone marrow from the patient's body. The traditional bone marrow extractor includes a puncture needle and a syringe, which is first punctured by the puncture needle, and then inserted into the syringe to draw fluid. However, this bone marrow extractor has the following disadvantages: one is that the puncture needle needs to rotate left and right to pierce the bone when puncturing, and during the left and right rotation, the puncture needle is inconvenient to guide and locate the puncture point; In the case of bone marrow, if multiple tests are required, that is, multiple tubes of samples need to be extracted, new syringes need to be replaced or pulled out multiple times to export the bone marrow fluid in the syringes, which is very troublesome.

In summary, it is necessary to propose a bone marrow extractor to solve the above problems.

Utility model content

The technical problem to be solved by the utility model is that, aiming at the problem that the puncture needle of the traditional bone marrow extractor cannot be positioned and guided when punctured, and the multi-tube sample needs to be replaced many times, and the operation is troublesome, a bone marrow extractor is proposed .

In order to solve the above technical problems, the embodiment of the present utility model provides a bone marrow extractor, which includes: a puncture needle and a needle barrel, the puncture needle includes a needle and a needle core matching the needle, and the middle part of the needle is circumferentially fixed with a Positioning guide plate, the lower surface of the positioning guide plate is covered with a silicone anti-skid pad, and the inner middle of the needle is provided with a vertical channel running through the upper and lower ends, which is used to accommodate the insertion of the needle core or syringe, and the side wall of the needle is provided with a A liquid outlet connected by a vertical channel.

Wherein, the top of the needle core is fixedly provided with a needle handle. When puncturing, the needle core is inserted into the vertical channel of the needle head, and the needle handle is located outside the top of the needle head.

Wherein, the fixed card on the liquid outlet is provided with an external joint, and the external joint is detachably connected with the vacuum blood collection tube through the drainage tube, and the clamp is installed on the drainage tube.

Wherein, the lower fixing sleeve of the syringe is provided with a positioning frame. When extracting the bone marrow, the liquid suction port at the bottom of the syringe is inserted into the vertical channel of the needle, and the positioning frame interferes with the positioning guide plate.

Wherein, a piston is arranged for sealing and sliding in the syringe, and the piston is connected with a pull rod, and the top of the pull rod extends out of the syringe.

Implementation of the utility model embodiment has the following beneficial effects:

The bone marrow extractor, by setting a positioning guide plate and a silicone anti-skid pad on the outer wall of the needle, can not only play the role of positioning the wire when the needle is inserted, but also prevent the puncture needle from sliding; And the liquid outlet of the vacuum blood collection tube, when multiple tubes of bone marrow samples are needed, it can be collected directly without pulling out the syringe multiple times, and the operation is simple and convenient.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of the bone marrow extractor provided by the present invention in the puncture state;

Fig. 2 is the structural representation of needle head;

Fig. 3 is the structural representation of needle core;

Fig. 4 is a schematic structural view of the bone marrow extractor provided by the present invention in the state of extracting bone marrow;

Fig. 5 is the structural representation of syringe;

Fig. 6 is a schematic bottom view of the positioning frame.

In the figure: puncture needle 1, needle head 2, needle core 3, positioning guide plate 4, silicone anti-skid pad 5, vertical passage 6, syringe 7, liquid outlet 8, needle handle 9, piston 10, pull rod 11, liquid suction Port 12, positioning frame 13, external joint 14, drainage tube 15 and clamp 16.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The bone marrow extractor includes: a puncture needle 1 and a syringe 7 .

Please refer to accompanying drawings 1-3, Fig. 1 is a schematic structural diagram of the bone marrow extractor provided by the present invention in a punctured state; Fig. 2 is a schematic structural diagram of a needle; Fig. 3 is a schematic structural diagram of a needle core.

The puncture needle 1 includes a needle head 2 and a needle core 3 matching the needle head 2 . The middle part of the needle head 2 is circumferentially fixed with a positioning guide plate 4 , and the lower surface of the positioning guide plate 4 is covered with a silicone anti-skid pad 5 . The inner middle of the needle head 2 is provided with a vertical channel 6 running through the upper and lower ends for accommodating the insertion of the needle core 3 or the syringe 7 . A liquid outlet 8 communicating with the vertical channel 6 is opened on one side wall of the needle 2 . A needle handle 9 is fixedly arranged on the top of the needle core 3 .

When puncturing, the needle core 3 is inserted into the vertical passage 6 of the needle head 2 , and the needle handle 9 is located outside the top of the needle head 2 . The assembled puncture is punctured on the patient. The medical staff hold the position of the needle handle, pinch the needle with their fingers, and the front of the finger touches the positioning guide plate 4, and slowly penetrate the bone with force from left and right. The positioning guide plate 4 can The final positioning keeps the puncture angle vertical, and the silicone anti-slip pad 5 can prevent the puncture needle 1 from sliding. After the puncture is completed, the needle core 3 is pulled out from the rear end, and then the syringe 7 is changed to draw liquid.

Please refer to Fig. 4-6, Fig. 4 is a schematic diagram of the structure of the bone marrow extractor provided by the present invention in the state of extracting bone marrow; Fig. 5 is a schematic diagram of the structure of the syringe; Fig. 6 is a schematic diagram of the bottom view of the positioning frame.

A piston 10 is arranged in the syringe 7 for sealing and sliding, and the piston 10 is connected with a pull rod 11 , and the top end of the pull rod 11 extends out of the syringe 7 . The lower fixed sleeve of the syringe 7 is provided with a positioning frame 13, which is a triangular or quadrangular support structure.

When extracting the bone marrow, the liquid suction port 12 at the bottom of the syringe 7 is inserted into the vertical passage 6 of the needle 2 , and the positioning frame 13 collides with the positioning guide plate 4 . The liquid outlet 8 of the needle 2 is fixedly provided with an external joint 14, which is detachably connected to the vacuum blood collection tube through a drainage tube 15, and a clamp 16 is installed on the drainage tube 15. If the amount of sample to be detected is small, the liquid outlet 8 can be blocked with a plug, and the patient's bone marrow can be directly extracted from the needle 2 into the syringe 7 by pulling up the pull rod 11; if there are many detection items, multiple tubes are required. For samples, the method of pre-connecting the vacuum blood collection tube at the liquid outlet 8 can be used to replace multiple vacuum blood collection tubes for storage. Compared with the traditional extractor, it eliminates the need to pull out the needle barrel multiple times, and then extract the bone marrow and then extract it. Putting back the trouble.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (5)

1. A bone marrow extractor, comprising: the puncture needle comprises a needle head and a needle core matched with the needle head, a positioning guide plate is fixedly arranged in the middle of the needle head in a circumferential direction, a silica gel anti-slip pad is arranged on the lower surface of the positioning guide plate in a covering mode, a vertical channel penetrating through the upper end and the lower end is formed in the middle of the needle head and used for accommodating the insertion of the needle core or the needle cylinder, and a liquid outlet communicated with the vertical channel is formed in one side wall of the needle head.

2. The bone marrow extractor according to claim 1, wherein a needle handle is fixedly arranged at the top end of the needle core, and the needle core is inserted into the vertical channel of the needle head when the needle core is punctured, and the needle handle is positioned outside the top of the needle head.

3. The bone marrow extractor according to claim 1, wherein the liquid outlet is fixedly provided with an external connector, the external connector is detachably connected with the vacuum blood collection tube through a drainage tube, and the drainage tube is provided with a clamp.

4. The bone marrow extractor of claim 1, wherein a positioning frame is fixedly sleeved at the lower part of the syringe, and when extracting bone marrow, a liquid extracting port at the bottom end of the syringe is inserted into the vertical channel of the needle head, and the positioning frame is abutted against the positioning guide plate.

5. The bone marrow extractor according to claim 4, characterized in that a piston is provided in the cylinder in a sealing sliding manner, said piston being connected to a pull rod, the top end of said pull rod extending outside the cylinder.

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