CN215960002U

CN215960002U - Marrow fluid negative pressure collector

Info

Publication number: CN215960002U
Application number: CN202121872525.6U
Authority: CN
Inventors: 张健华; 李养晶; 刘丰畅
Original assignee: Nanjing Changfeng Biotechnology Co ltd
Current assignee: Nanjing Changfeng Biotechnology Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-03-08
Anticipated expiration: 2031-08-11

Abstract

The utility model relates to a marrow fluid negative pressure collector, which comprises a puncture needle, a collecting needle and a collecting tube, wherein the collecting needle is provided with a self-sealing needle, the self-sealing needle is internally provided with a hollow needle tube, the outside of the self-sealing needle is wrapped with a rubber sleeve, and the collecting tube is in vacuum sealing. When the sealed cover of self-sealing needle to gathering the pipe punctures during the collection marrow, pierce through rubber sleeve earlier, rubber sleeve receives sealed lid extrusion to needle tubing root fold deformation, and the marrow liquid flows into the pipe of gathering by the pjncture needle under the negative pressure effect in, and when the marrow finishes removing the pipe of gathering, rubber sleeve reconversion is lived the needle tubing by the parcel again to blood outflow has been avoided and has been caused the pollution.

Description

Marrow fluid negative pressure collector

Technical Field

The utility model relates to the technical field of medical instrument production, in particular to a marrow fluid negative pressure collector.

Background

The current collection mode of bone marrow fluid on the market is mainly to establish a path between a bone marrow cavity and the outside of a body by using a biopsy needle, and then to suck the bone marrow fluid by connecting a syringe with the biopsy needle.

When the requirement for collecting the bone marrow fluid is large, the injector needs to be repeatedly connected for suction, and the injector is used as a transport tool of the bone marrow fluid, so that the sample can be polluted in the middle process. Or multiple syringes may be required as an intermediate carrier for the bone marrow fluid, which may affect the state of the bone marrow fluid (e.g., the coagulation state).

Disclosure of Invention

In order to solve the problem of possible pollution of samples in the marrow fluid collecting process, the utility model provides a marrow fluid negative pressure collector which comprises a puncture needle 1, a collecting tube 2 and a collecting tube 3. The puncture needle 1 comprises an outer tube handle 11, an inner needle handle 12, an outer tube 13 and an inner needle 14, wherein a joint 15 is arranged at the tail end of the outer tube handle 11, one end of the outer tube 13 is arranged at the front end of the outer tube handle 11, the other end of the outer tube 13 is provided with a puncture blade surface, one end of the inner needle 14 is arranged on the inner needle handle 12, the other end of the inner needle is also provided with a puncture blade surface, and when the inner needle handle 14 is combined with the outer tube handle 11, the inner needle 14 is inserted into the outer tube 13, and the puncture blade surfaces of the inner needle and the outer tube are superposed. Gather needle 2 and have adapter 21 and from airtight needle 22 that link together, adapter 21 is applicable to and connects joint 15, from airtight needle 22 inside be hollow needle tube 221, the outside parcel of hollow needle 221 has rubber sleeve 222, rubber sleeve 222 can warp to hollow needle tube 221 root fold when receiving external force extrusion. The collection tube 3 comprises a tube body 31 and a sealing cover 32, wherein the tube body 31 and the sealing cover 32 form a vacuum sealing structure.

Preferably, the collection needle further comprises a catheter 23, and the catheter 23 is connected between the adapter 21 and the self-sealing needle 22 to form a sealed passage therebetween.

Preferably, the adapter 21 is a 6% external cone adapter or a 6% external cone locking adapter.

Preferably, the fitting 15 is a luer fitting.

The utility model achieves the following beneficial effects:

the collecting needle has a self-sealing effect, so that the pollution caused by the overflow of the sample is prevented, and the collecting tube also has a sealing storage function, so that the sample is prevented from being polluted; the negative pressure collecting tube is used for sucking, so that the operation is convenient and fast; the universal joint is used, and the connection can be performed at one time, so that the method is simple and convenient.

Drawings

Fig. 1 is an overall structure diagram of the collector.

Fig. 2 is a structural view of the puncture needle.

Fig. 3 is a view showing the structure of the collecting needle.

FIG. 4 is a view of the collection tube configuration.

Fig. 5 is a structural view of the collector in use.

Names of reference symbols in the description of the drawings: 1-puncture needle, 11-outer tube handle, 12-inner needle handle, 13-outer tube, 14-inner needle, 15-luer connector, 2-collection needle, 21-adapter, 22-self-sealing needle, 221-hollow needle tube, 222-rubber sleeve, 23-catheter, 3-collection tube, 31-tube body and 32-sealing cover.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, which are given by way of illustration and not by way of limitation.

The marrow fluid negative pressure collector consists of three parts, namely a puncture needle 1, a collecting needle 2 and a collecting tube 3.

The puncture needle 1 is composed of an outer tube handle 11, an inner needle handle 12, an outer tube 13, and an inner needle 14. Wherein one end of the outer tube 13 is arranged at the front end of the outer tube handle 11, and the other end is provided with a puncture blade surface. One end of the inner needle 14 is arranged on the inner needle handle 12, and the other end is also provided with a puncture blade surface. The outer tube handle 11 and the inner needle handle 12 may be combined together, and the inner needle 14 may be inserted into the outer tube 13 by entering through the inner bore of the outer tube 13, so that the piercing edges of the two coincide.

The trailing end of the outer tube handle 11 is also provided with a connector 15, which in this embodiment is a standard luer connector.

The collecting needle 2 has an adapter 21 and a self-sealing needle 22 connected together.

The adapter 21 may have a variety of forms, such as a 6% outer cone connector, a 6% outer cone locking connector, or other forms, for connecting to the connector 15 on the spike. The hollow needle tube 221 is arranged inside the closed needle 22, the rubber sleeve 222 wraps the hollow needle tube 221, the rubber sleeve 222 has a sealing effect on the hollow needle tube 221 in a natural state, and when the hollow needle tube 221 penetrates through the rubber sleeve 222, the rubber sleeve 222 can be extruded and deformed on the surface of the hollow needle tube 221 in a sliding mode. The collection needle can also be provided with a conduit 23, the conduit 23 is a transparent hose and is used for connecting the adapter 21 and the self-sealing needle 22, a closed passage is formed between the adapter 21 and the self-sealing needle, and the length of the conduit 23 is not suitable to be too long.

The collection tube 3 is composed of a tube body 31 and a sealing cover 32, the tube body 31 is used for collecting and storing bone marrow liquid, and various additives such as heparin, anticoagulant and the like can be arranged in the tube according to different requirements. The sealing cap 32 serves two purposes, one is to ensure a certain negative pressure in the unused collection tube 3 and the other is to ensure that the puncture site does not leak after being punctured by the self-sealing needle 221. The collection tube 3 can be set to a variety of capacities and negative pressure conditions for meeting different sampling requirements.

When the negative pressure collector is used, the puncture needle is used according to the operation specification to finish the puncture action, the inner needle 14 of the puncture needle 1 enters from the inner hole of the outer tube 13, the puncture blade surfaces of the inner needle and the outer tube are overlapped, after the puncture action is finished, the inner needle 14 is removed, and the puncture needle 1 finishes the establishment of the sampling channel.

The adapter 21 on the collection needle 2 is connected to the hub 15 of the puncture needle 1. The self-sealing needle 22 of the collecting needle 2 is pricked to the sealing cover 32 of the collecting tube 3, at this time, the hollow needle tube 221 of the self-sealing needle 22 firstly passes through the rubber sleeve 222 penetrating through the outside of the self-sealing needle, the needle is continuously inserted, so that the hollow needle tube 221 enters the tube body 31 of the collecting tube 3, the rubber sleeve 222 is extruded by the sealing cover 32 to fold and deform towards the root part of the hollow needle tube 221, and when the bone marrow fluid flows into the collecting tube 3 from the collecting needle 2 under the action of negative pressure.

When the bone marrow fluid stops flowing, the negative pressure in the collection tube 3 is eliminated, and when the collection tube 3 is removed, the rubber sleeve 222 is recovered to wrap the hollow needle tube 221 again, so that the pollution caused by the outflow of the blood is avoided. The new collection tube 3 is replaced and the hollow needle tube 221 is inserted again, and the above operations are repeated until the collection of the bone marrow fluid is completed.

Claims

1. The utility model provides a marrow liquid negative pressure collector, its characterized in that includes pjncture needle (1), gathers needle (2) and gathers pipe (3), wherein:

the puncture needle (1) comprises an outer tube handle (11), an inner needle handle (12), an outer tube (13) and an inner needle (14), wherein a joint (15) is arranged at the tail end of the outer tube handle (11), one end of the outer tube (13) is arranged at the front end of the outer tube handle (11), the other end of the outer tube (13) is provided with a puncture blade surface, one end of the inner needle (14) is arranged on the inner needle handle (12), the other end of the inner needle (14) is also provided with a puncture blade surface, and when the inner needle handle (12) and the outer tube handle (11) are combined, the inner needle (14) is inserted into the outer tube (13), and the puncture blade surfaces of the inner needle and the outer needle are superposed;

the collecting needle (2) is provided with an adapter (21) and a self-sealing needle (22) which are connected together, the adapter (21) is used for connecting the connector (15), a hollow needle tube (221) is arranged inside the self-sealing needle (22), a rubber sleeve (222) wraps the outside of the hollow needle tube (221), and the rubber sleeve (222) can be folded and deformed towards the root of the hollow needle tube (221) when being extruded by external force;

the collection tube (3) comprises a tube body (31) and a sealing cover (32), and a vacuum sealing structure is formed by the tube body (31) and the sealing cover (32).

2. The bone marrow fluid negative pressure collector of claim 1, characterized in that the collecting needle is also provided with a catheter (23), the catheter (23) is connected between the adapter (21) and the self-sealing needle (22) to form a closed passage between the two.

3. A bone marrow fluid negative pressure collector according to claim 1, characterized in that the adapter (21) is an external cone adapter or an external cone locking adapter.

4. A collector of the negative pressure of the bone marrow fluid according to claim 1, characterized in that the joint (15) is a luer joint.