Bone marrow puncture needle

Abstract

The utility model provides a bone marrow puncture needle. The bone marrow puncture needle comprises a sleeve; the puncture needle head is provided with a puncture end and a mounting end, the sleeve is fixedly arranged at the mounting end of the puncture needle head, and the puncture end of the puncture needle head is provided with a first blocking block; the needle core penetrates through the puncture needle head, and a second blocking block is arranged at the end, close to the first blocking block, of the needle core; when the needle core is rotated to enable the second blocking block and the first blocking block to be overlapped, the puncture needle head and the needle core form a through channel. After the puncture needle head completes puncture, the second blocking block and the first blocking block can be overlapped to form the through channel by rotating the needle core, so that an injector connected to the end of the needle core can directly extract marrow fluid, additional needle core dismounting and mounting steps are not needed, and the puncture efficiency is improved by reducing the steps of taking down the needle core and connecting the injector. And the whole puncture process is quicker, so that the operation time is shortened, the discomfort of a patient is reduced, and the infection risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to bone marrow puncture needle. BACKGROUND

[0002] When clinically diagnosing blood system diseases, bone marrow puncture is the most important and basic inspection item, through judging the degree of nucleated cell proliferation, calculating the percentage, shape, quantity and distribution of various cells, in the bone marrow puncture, need to use bone marrow puncture needle to collect bone marrow fluid, then detect the collected bone marrow fluid, the currently used bone marrow puncture needle is composed of needle body, handle and needle core, when carrying out bone marrow puncture to the patient, the needle body needs to take down the needle core and then connect the syringe to suck after pricking the puncture site, the operation is relatively complex, and it is laborious and labor-consuming. UTILITY MODEL CONTENTS

[0003] In view of the deficiencies in the prior art, the utility model provides a bone marrow puncture needle, which solves the problem that the needle core needs to be taken out to collect bone marrow fluid in the prior art.

[0004] According to the embodiment of the utility model, the utility model adopts the following technical scheme:

[0005] The bone marrow puncture needle comprises:

[0006] A sleeve pipe;

[0007] A puncture needle head has a puncture end and a mounting end, the sleeve pipe is fixedly arranged at the mounting end of the puncture needle head, and the puncture end of the puncture needle head is provided with a first blocking piece;

[0008] A needle core is arranged in the puncture needle head and is provided with a second blocking piece at one end close to the first blocking piece;

[0009] When the needle core is rotated to make the second blocking piece overlap the first blocking piece, the puncture needle head and the needle core form a through channel.

[0010] Preferably, the end of the needle core is fixedly provided with a limiting ring, the mounting end of the puncture needle head is provided with a limiting groove, and the limiting ring is clamped in the limiting groove.

[0011] Preferably, the limiting ring is provided with a limiting block, the inner wall of the limiting groove is provided with a clamping groove, and the limiting block is clamped in the clamping groove.

[0012] Preferably, the end of the needle core is provided with a fixing ring, the fixing ring is provided with an indicating groove, the end of the sleeve pipe is provided with two corresponding indicating blocks, and the indicating groove corresponds to one of the indicating blocks.

[0013] Preferably, the puncture needle head is provided with a plurality of scale lines in the axial direction.

[0014] Preferably, the sleeve pipe is provided with an auxiliary block.

[0015] Preferably, the cross-sectional area of the second block is greater than that of the first block.

[0016] Preferably, the other end of the needle core is provided with a connecting pipe for mounting a syringe.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] In the scheme, after the puncture needle completes puncture, the second block can be overlapped with the first block to form a through channel by rotating the needle core, so that the syringe connected to the end of the needle core directly extracts bone marrow fluid, without additional dismounting and mounting steps of the needle core, by reducing the steps of removing the needle core and connecting the syringe, the whole puncture process will be more rapid, which helps to shorten the operation time and reduce the discomfort of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the stereoscopic structure of the puncture needle in the utility model embodiment.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the puncture needle and the needle core in the utility model embodiment.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the puncture needle in the utility model embodiment.

[0022] Figure 4 It is a schematic diagram of the connection structure of the puncture needle and the needle core in the utility model embodiment.

[0023] In the above drawings: 1, sleeve; 101, indicating block; 2, puncture needle; 201, first block; 202, clamping groove; 203, scale line; 3, needle core; 301, second block; 302, limiting ring; 303, limiting block; 4, fixed ring; 401, indicating groove; 5, auxiliary block; 6, connecting pipe. DETAILED DESCRIPTION

[0024] The technical scheme in the utility model will be further described below in combination with the drawings and embodiments.

[0025] As shown in the drawings, Figure 1 and Figure 3 the utility model embodiment provides a bone marrow puncture needle, which comprises:

[0026] a sleeve 1;

[0027] a puncture needle 2 having a puncture end and a mounting end, the sleeve 1 being fixedly arranged at the mounting end of the puncture needle 2, and the puncture end of the puncture needle 2 being provided with a first block 201;

[0028] The needle core 3 is arranged in the puncture needle 2, and a second block 301 is arranged at one end close to the first block 201.

[0029] When the second block 301 overlaps the first block 201 by rotating the needle core 3, the puncture needle 2 and the needle core 3 form a through channel.

[0030] In the embodiment of the utility model, the first block 201 and the second block 301 are both semicircular structures, and the channels of the puncture needle 2 and the needle core 3 are partially blocked by the first block 201 and the second block 301 respectively. Figure 2 The second block 301 is located at the top end of the first block 201, and the channel of the puncture needle 2 is blocked by the second block 301. When the puncture needle 2 completes puncture, the needle core 3 can be rotated, and the rotating direction can be clockwise or counterclockwise, so that the second block 301 gradually rotates to the position of the first block 201 until the second block 301 completely overlaps the first block 201, so that the channel of the puncture needle 2 and the needle core 3 is connected to form a through channel. Before puncture, the syringe can be connected to the needle core 3, and after puncture and rotation of the needle core 3, the syringe connected to the end of the needle core 3 directly extracts bone marrow fluid, without additional disassembly and installation steps of the needle core 3.

[0031] In other embodiments, the first block 201 is a certain distance from the puncture end of the puncture needle 2, and a visual probe or camera can be installed at the bottom end of the first block 201. The operator can operate under real-time monitoring and directly observe the specific situation of the puncture needle entering the tissue, which helps to more accurately position the puncture point and ensure that the needle tip reaches the ideal sampling position, thereby improving the diagnostic accuracy.

[0032] Specifically, as shown in Figure 4 The end of the needle core 3 is fixedly provided with a limiting ring 302, and the mounting end of the puncture needle 2 is provided with a limiting groove, and the limiting ring 302 is clamped in the limiting groove. By setting the limiting ring 302 at the end of the needle core 3 and opening the limiting groove at the mounting end of the puncture needle 2, the positioning connection between the needle core 3 and the puncture needle 2 is more stable, and the needle core 3 will not move axially under the action of the limiting ring 302.

[0033] Specifically, as shown in Figure 4As shown, the limiting ring 302 is provided with a limiting block 303, and the inner wall of the limiting groove is provided with a clamping groove 202, and the limiting block 303 is clamped in the clamping groove 202; the clamping groove 202 is slotted along the circumference of the limiting groove by 180°, when the needle core 3 rotates, the two ends of the clamping groove 202 can give the limiting block 303 stroke limiting, so that the limiting block 303 rotates at most 180°, when the limiting block 303 rotates 180° in the initial state, the first block 201 just overlaps with the second block 301, so as to implement the sampling operation of the syringe.

[0034] Specifically, as shown in the drawings, Figure 1 As shown, the end of the needle core 3 is provided with a fixed ring 4, the fixed ring 4 is provided with an indicating groove 401, the end of the sleeve 1 is provided with two corresponding indicating blocks 101, and the indicating groove 401 corresponds to one of the indicating blocks 101; in the actual operation process, because the puncture needle 2 is small in size, the position between the first block 201 and the second block 301 cannot be directly observed, so under the cooperation of the indicating groove 401 and the two indicating blocks 101, the two indicating blocks 101 are mirror image distributed, and the two indicating blocks 101 correspond to the two ends of the clamping groove 202 respectively, when the indicating groove 401 moves from one indicating block 101 to the other indicating block 101, the second block 301 just completes 180° adjustment, so that the first block 201 and the second block 301 overlap or the first block 201 and the second block 301 separate to close the through channel.

[0035] Specifically, as shown in the drawings, Figure 1 As shown, the puncture needle 2 is provided with a plurality of scale lines 203 along the axial direction; under the action of the plurality of scale lines 203, the puncture depth of the puncture needle 2 can be controlled, and different puncture situations can be better coped with.

[0036] Specifically, as shown in the drawings, Figure 1 As shown, the sleeve 1 is provided with an auxiliary block 5; one auxiliary block 5 is fixedly arranged on the outer circumferential side of the sleeve 1, and the auxiliary block 5 can adopt a plate structure, when puncturing or sampling operation is performed, the auxiliary block 5 can be used to facilitate the operator to perform handheld operation, increase the contact area between the operator's fingers and the puncture needle, and improve the stability during the bone marrow puncture operation.

[0037] Specifically, as shown in the drawings, Figure 2 and Figure 3 As shown, the cross-sectional area of the second block 301 is greater than that of the first block 201; when the second block 301 and the first block 201 are in the initial position, the edge of the second block 301 is located on the top surface of the first block 201, and the sealing of the needle core 3 is realized.

[0038] Specifically, as shown in the drawings, Figure 1As shown, the other end of the needle core 3 is provided with a connecting pipe 6 for mounting a syringe; the connecting pipe 6 adopts a connecting head structure of the syringe, and in use, the end of the syringe can be quickly fixed and mounted in the connecting pipe 6, and the syringe can be conveniently disassembled later, and the sample after sampling can be conveniently taken out.

[0039] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A bone marrow aspiration needle characterized by, The utility model relates to a syringe needle and needle core locking device, which comprises: a sleeve (1); a puncture needle (2) with a puncture end and a mounting end, the sleeve (1) being fixedly arranged at the mounting end of the puncture needle (2), the puncture end of the puncture needle (2) being provided with a first block (201); a needle core (3) penetrating through the puncture needle (2) and being provided with a second block (301) at one end close to the first block (201); wherein, when the needle core (3) is rotated to make the second block (301) overlap with the first block (201), a through channel is formed between the puncture needle (2) and the needle core (3).

2. The bone marrow aspiration needle of claim 1 wherein, The end of the needle core (3) is fixedly provided with a limiting ring (302), the mounting end of the puncture needle (2) is provided with a limiting groove, and the limiting ring (302) is clamped in the limiting groove.

3. A bone marrow aspiration needle according to claim 2, wherein The limiting ring (302) is provided with a limiting block (303), the inner wall of the limiting groove is provided with a clamping groove (202), and the limiting block (303) is clamped in the clamping groove (202).

4. The bone marrow aspiration needle of claim 1 wherein, The end of the needle core (3) is provided with a fixing ring (4), the fixing ring (4) is provided with an indicating groove (401), the end of the sleeve (1) is provided with two corresponding indicating blocks (101), and the indicating groove (401) corresponds to one of the indicating blocks (101).

5. The bone marrow aspiration needle of claim 1 wherein, The puncture needle (2) is provided with a plurality of scale lines (203) along the axial direction.

6. The bone marrow aspiration needle of claim 1 wherein, The sleeve (1) is provided with an auxiliary block (5).

7. The bone marrow aspiration needle of claim 1 wherein, The sectional area of the second block (301) is larger than that of the first block (201).

8. The bone marrow aspiration needle of claim 1 wherein, The other end of the needle core (3) is provided with a connecting pipe (6) for mounting a syringe.

Images