CN211633381U

CN211633381U - Safety bone marrow aspiration needle

Info

Publication number: CN211633381U
Application number: CN201920910605.2U
Authority: CN
Inventors: 杨彦君; 李珂
Original assignee: Shengjing Hospital of China Medical University
Current assignee: Shengjing Hospital of China Medical University
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-10-09
Anticipated expiration: 2029-06-13

Abstract

The utility model discloses a safety bone marrow aspiration needle, which comprises a needle sleeve, a protective sleeve barrel, a thread barrel, a penetration needle cylinder, a narrowing knob, a thread knob and a needle core, wherein the middle part of the needle sleeve is hollow, one end of the needle sleeve is fixed with the protective sleeve barrel, the protective sleeve barrel is communicated with the inner wall of the needle sleeve, the inner wall of the needle sleeve is provided with threads, the thread of the inner wall of the needle sleeve is connected with the thread barrel, one end of the thread barrel, which is close to the protective sleeve barrel, is fixed with the penetration needle cylinder, the penetration needle cylinder is communicated with the thread barrel, the thread barrel is slidably connected with the inner wall of the protective sleeve barrel, one end of the thread barrel, which is far away from the penetration needle cylinder, is fixed with the narrowing knob through the needle sleeve, the middle part of the narrowing knob is provided with a threaded hole, the inner, the safety bone marrow aspiration needle can prevent people from being hurt by penetrating the needle cylinder, and is safer to use.

Description

Safety bone marrow aspiration needle

Technical Field

The utility model relates to the technical field of medical treatment, in particular to a safe bone marrow aspiration needle.

Background

Bone marrow puncture is a common diagnostic technique for collecting bone marrow fluid, and the bone marrow puncture fluid is usually used for blood cell morphology examination in clinic, and can also be used for hematopoietic stem cell culture, cytogenetic analysis, pathogenic biology examination and the like to assist clinical diagnosis, observation of curative effect, judgment of prognosis and the like. Hemophiliacs forbid bone marrow puncture, but the existing suction needle for bone marrow puncture is easy to be punctured by a puncture needle cylinder to injure hands after people pull out the puncture needle cylinder, so the use is unsafe; in addition, the existing needle core is easy to prick the hand when being taken out after the bone puncture is finished. To this end, we propose a safety bone marrow aspiration needle.

Disclosure of Invention

An object of the utility model is to provide a safe type marrow aspiration needle to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a safe type marrow aspiration needle, includes needle cover, protective sleeve, a screw thread section of thick bamboo, pierces through the cylinder, the knob of narrowing, screw thread knob and nook closing member, the needle cover middle part is cavity setting, needle cover one end is fixed with protective sleeve, and protective sleeve and needle cover inner wall intercommunication, the screw thread is seted up to the needle cover inner wall, needle cover inner wall threaded connection has a screw thread section of thick bamboo, the one end that a screw thread section of thick bamboo is close to protective sleeve is fixed with and pierces through the cylinder, and pierces through cylinder and screw thread section of thick bamboo intercommunication, a screw thread section of thick bamboo and protective sleeve inner wall sliding connection, the one end that a screw thread section of thick bamboo kept away from and pierces through the cylinder is passed the needle cover and is fixed with the knob of narrowing, and the knob middle part sets up threaded hole, screw thread hole.

Preferably, the inner wall of the protective sleeve is provided with a sliding groove, the inner wall of the sliding groove is fixed with a spring, one end of the spring is fixed with a thimble, the thimble is connected with the inner wall of the sliding groove in a sliding manner, one end of the penetrating needle cylinder, which is far away from the threaded cylinder, is provided with a through hole, and the thimble is clamped with the through hole.

Preferably, one end of the stylet, which is far away from the thread knob, is arranged in a round opening.

Preferably, the outer sides of the narrowing knob and the thread knob are both provided with anti-skid threads.

Preferably, one end of the penetrating needle cylinder close to the through hole is arranged in a triangular shape.

Preferably, the inner wall of one end of the penetrating needle cylinder, which is far away from the through hole, is provided with a bell mouth.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses after the bone is worn and done, people are through rotatory screw knob, make the screw knob screw out in the knob of narrowing, can extract the nook closing member, when needing to pierce through the cylinder and take out, people are through rotatory knob of narrowing, and then drive a screw section of thick bamboo and rotate, make a screw section of thick bamboo screw out from the needle cover, and then drive and pierce through in the cylinder slowly retracts the needle cover, when the through-hole that pierces through on the cylinder coincides with the spout in the protective sleeve, the thimble advances in the through-hole under the thrust of spring, carry on spacingly to the syringe of penetrating, make and pierce through the unable removal of cylinder, the one end that the cylinder is close to the through-hole at this moment is drawn in the protective sleeve completely, and then can prevent people and extract the problem of being pricked the hand when penetrating.

2. The utility model discloses the one end that the screw thread knob was kept away from to the nook closing member is the round mouth design, makes the nook closing member when taking out, is difficult for stabbing the staff, and the people of being convenient for use.

Drawings

FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention;

fig. 2 is a schematic view of a cross-sectional structure of the thimble according to the present invention.

In the figure: 1. a needle sleeve; 2. a protective sleeve; 3. a threaded barrel; 4. penetrating the needle cylinder; 5. a narrowing knob; 6. a threaded knob; 7. a needle core; 8. a chute; 9. a spring; 10. a thimble; 11. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a safety bone marrow aspiration needle comprises a needle sleeve 1, a protective sleeve 2, a thread sleeve 3, a penetration needle cylinder 4, a narrowing knob 5, a thread knob 6 and a needle core 7, wherein the middle part of the needle sleeve 1 is arranged in a hollow way, one end of the needle sleeve 1 is fixed with the protective sleeve 2, the protective sleeve 2 is communicated with the inner wall of the needle sleeve 1, the inner wall of the needle sleeve 1 is provided with threads, the inner wall of the needle sleeve 1 is in threaded connection with the thread sleeve 3, one end of the thread sleeve 3 close to the protective sleeve 2 is fixed with the penetration needle cylinder 4, the penetration needle cylinder 4 is communicated with the thread sleeve 4, the thread sleeve 3 is in sliding connection with the inner wall of the protective sleeve 2, one end of the thread sleeve 3 far away from the penetration needle cylinder 4 penetrates the needle sleeve 1 and is fixed with the narrowing knob 5, the middle part of the narrowing knob 5 is provided with a threaded hole, the inner wall of the threaded hole is in, when the needle sleeve is used, people rotate the narrowing knob 5 to drive the thread cylinder 3 to rotate, so that the thread cylinder 3 is screwed out of the needle sleeve 1, and then the penetrating needle cylinder 4 is driven to slowly retract into the needle sleeve 1, and the problem that the hands of people are pricked when the penetrating needle cylinder 4 is pulled out can be prevented.

The inner wall of the protective sleeve 2 is provided with a sliding groove 8, the inner wall of the sliding groove 8 is fixed with a spring 9, one end of the spring 9 is fixed with a thimble 10, the thimble 10 is in sliding connection with the inner wall of the sliding groove 8, one end of the penetrating needle cylinder 4 far away from the thread cylinder 3 is provided with a through hole 11, and the thimble 10 is connected with the through hole 11 in a clamping manner, so that when the penetrating needle cylinder 4 is completely received into the protective sleeve 2, the thimble 10 limits the penetrating needle cylinder 4.

The end of the stylet 7 far away from the thread knob 6 is arranged in a round mouth shape, so that the stylet 7 is prevented from pricking people.

Anti-skidding line has all been seted up in the receipts needle knob 5 and the 6 outsides of screw thread knob, and the people of being convenient for twist and move receipts needle knob 5 and screw thread knob 6.

The end of the penetration needle cylinder 4 close to the through hole 11 is arranged in a triangle shape, which is convenient for penetrating the bone.

The inner wall of one end of the penetrating needle cylinder 4 far away from the through hole 11 is provided with a bell mouth, so that the needle core 7 can conveniently penetrate into the inner wall of the penetrating needle cylinder 4.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a safe type marrow aspiration needle, includes needle cover (1), protective sleeve (2), a screw thread section of thick bamboo (3), pierces through syringe (4), receipts needle knob (5), screw thread knob (6) and nook closing (7), its characterized in that: the needle sleeve is characterized in that the middle of the needle sleeve (1) is arranged in a hollow mode, one end of the needle sleeve (1) is fixed with a protective sleeve (2), the protective sleeve (2) is communicated with the inner wall of the needle sleeve (1), threads are formed in the inner wall of the needle sleeve (1), a thread cylinder (3) is connected to the inner wall of the needle sleeve (1) in a threaded mode, a penetrating needle cylinder (4) is fixed to one end, close to the protective sleeve (2), of the thread cylinder (3), the penetrating needle cylinder (4) is communicated with the thread cylinder (3), the thread cylinder (3) is connected with the inner wall of the protective sleeve (2) in a sliding mode, a retracting knob (5) is fixed to one end, far away from the penetrating needle cylinder (4), of the thread cylinder (3) penetrates through the needle sleeve (1), a threaded hole is formed in the middle of the retracting knob (5), a thread knob (6) is connected to the inner wall, and the needle core (7) is inserted with the penetration needle cylinder (4).

2. The safety bone marrow aspiration needle of claim 1, wherein: spout (8) have been seted up to protective sleeve (2) inner wall, spout (8) inner wall is fixed with spring (9), spring (9) one end is fixed with thimble (10), and thimble (10) and spout (8) inner wall sliding connection, pierce through cylinder (4) and keep away from the one end of screw thread section of thick bamboo (3) and seted up through-hole (11), and thimble (10) and through-hole (11) joint.

3. The safety bone marrow aspiration needle of claim 1, wherein: the end of the stylet (7) far away from the thread knob (6) is arranged in a round opening.

4. The safety bone marrow aspiration needle of claim 1, wherein: the outside of the narrowing knob (5) and the outside of the thread knob (6) are both provided with anti-skid lines.

5. The safety bone marrow aspiration needle of claim 1, wherein: one end of the penetrating needle cylinder (4) close to the through hole (11) is arranged in a triangular mode.

6. The safety bone marrow aspiration needle of claim 1, wherein: the inner wall of one end of the penetrating needle cylinder (4) far away from the through hole (11) is provided with a horn mouth.