CN220495033U - Disposable bone marrow puncture suction needle - Google Patents

Disposable bone marrow puncture suction needle Download PDF

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Publication number
CN220495033U
CN220495033U CN202321729399.8U CN202321729399U CN220495033U CN 220495033 U CN220495033 U CN 220495033U CN 202321729399 U CN202321729399 U CN 202321729399U CN 220495033 U CN220495033 U CN 220495033U
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China
Prior art keywords
needle
hollow needle
bone marrow
aspiration
needle body
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Active
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CN202321729399.8U
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Chinese (zh)
Inventor
刘保池
高雄
蔡得阳
黄中俊
郑儒平
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Hunan Huaqi Biotechnology Co ltd
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Hunan Huaqi Biotechnology Co ltd
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Priority to CN202321729399.8U priority Critical patent/CN220495033U/en
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Abstract

The utility model discloses a disposable bone marrow puncture suction needle, which comprises an outer sleeve needle and a lining core, wherein the outer sleeve needle comprises a hollow needle body and a depth adjusting sleeve sleeved at the tail part of the hollow needle body, the rear end of the depth adjusting sleeve is provided with a luer locking joint and a rotary sub-buckle, the lining core comprises a solid needle and a rotary female buckle fixedly arranged at the tail end of the solid needle, the rotary female buckle is in rotary buckling connection with the rotary sub-buckle, the head end of the hollow needle body is provided with a bevel suction hole, the solid needle is sleeved in the hollow needle body, the head end of the solid needle body is provided with a bevel puncture surface coplanar with the head end of the hollow needle body, and the position, close to the head end, of the hollow needle body is provided with at least one side suction hole. The disposable bone marrow puncture aspiration needle can shorten the time for aspiration of bone marrow tissues and bone marrow fluid or reduce the pressure of aspiration.

Description

Disposable bone marrow puncture suction needle
Technical Field
The utility model relates to the field of medical appliances, in particular to a disposable bone marrow puncture suction needle.
Background
Bone marrow puncture examination is one of the important examination methods for blood system diseases, and by means of bone marrow puncture cytology examination, the generation condition of various cells in bone marrow can be known, and the morphology and the composition of various cells can be changed, abnormal cells can be found, etc., so that the diagnosis can be made clearly, the curative effect can be observed, and the prognosis can be evaluated.
The disposable bone marrow puncture suction needle is used for puncturing parts such as human sternum or ilium, extracting bone marrow liquid or performing bone marrow tissue biopsy, injecting medicine and puncturing parts of the tibia of children, and extracting bone marrow liquid.
The existing disposable bone marrow puncture suction needle comprises an outer sleeve needle and a lining core, wherein the outer sleeve needle comprises a hollow needle body and a depth adjusting sleeve sleeved at the tail part of the hollow needle body, the rear end of the depth adjusting sleeve is provided with a luer locking joint and a rotary sub-buckle, the lining core comprises a solid needle and a rotary female buckle fixedly arranged at the tail end of the solid needle, the rotary female buckle is connected with the rotary sub-buckle in a rotary buckling manner, and an oblique cutting suction hole is formed in the head end of the hollow needle body and can be used for extracting bone marrow fluid.
The disposable bone marrow puncture aspiration needle has the following defects when in use: if the oblique cutting suction hole is blocked or the flow rate of bone marrow tissue in the range is not high, the problem that the bone marrow suction is too slow or the suction amount is low occurs, and the main reason is that when the puncture suction needle penetrates into cancellous bone and exits from the solid needle to start suction, the suction effect generates pressure difference, the bone marrow radiates from the oblique cutting suction hole to the periphery, the bone marrow needs to move along the direction of the oblique cutting suction hole along with the pressure difference from the hole communicated with cancellous bone, the gap between the outer wall of the needle and the cancellous bone and the like, the pressure difference gradually decays along with the increase of the distance between the bone marrow and the oblique cutting suction hole, and the distance that the bone marrow at a distance needs to move to the oblique cutting suction hole is long, so that the suction force or the suction time needs to be increased, and a patient can bear more pain without end.
Disclosure of Invention
In view of the above, the present utility model proposes a disposable bone marrow aspiration needle to shorten the time for aspiration of bone marrow tissue and bone marrow fluid or to reduce the pressure of aspiration.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the disposable bone marrow puncture suction needle comprises an outer sleeve needle and a lining core, wherein the outer sleeve needle comprises a hollow needle body and a depth adjusting sleeve sleeved at the tail part of the hollow needle body, the rear end of the depth adjusting sleeve is provided with a luer locking joint and a rotary sub-buckle, the lining core comprises a solid needle and a rotary female buckle fixedly arranged at the tail end of the solid needle, the rotary female buckle is connected with the rotary sub-buckle in a rotary buckling manner, the head end of the hollow needle body is provided with a bevel suction hole, the solid needle is sleeved in the hollow needle body, the head end of the solid needle body is provided with a bevel suction surface coplanar with the head end of the hollow needle body, and the position, close to the head end of the hollow needle body, of the hollow needle body is provided with at least one side suction hole.
In order to better realize the technical scheme, the number of the side suction holes is four, and the side suction holes are symmetrically arranged along the central axis of the hollow needle body.
Optionally, the side suction holes are elliptical holes or circular holes.
Optionally, the arc length of the side suction hole along the circumferential direction of the hollow needle body is at most 1/4 of the arc length of the circumferential surface of the hollow needle body.
Optionally, the shape of the chamfer suction hole comprises a circular arc shape, a triangular prism shape and a sword shape.
Optionally, the hollow needle body includes a first hollow needle body, a second hollow needle body and a third hollow needle body, the maximum depth of penetration of the first hollow needle body into the body is 25mm, the maximum depth of penetration of the second hollow needle body into the body is 40mm, and the maximum depth of penetration of the third hollow needle body into the body is 55mm.
Optionally, the outer diameter of the hollow needle body is 2.1mm.
The utility model has the beneficial effects that:
the disposable bone marrow puncture suction needle can expand the range of sucking bone marrow tissues and bone marrow liquid by using the pressure difference by arranging the oblique cutting suction hole and the plurality of side suction holes, so as to obtain the bone marrow tissues and the bone marrow liquid at different positions, and simultaneously avoid the problems of difficult suction and increased pain of patients caused by pressure difference attenuation and single suction hole blockage.
Drawings
FIG. 1 is a front view of a single use bone marrow aspiration needle in combination according to an embodiment of the present utility model;
fig. 2 is a front view of a single-use bone marrow aspiration needle according to an embodiment of the present utility model with the single-use bone marrow aspiration needle separated from each other.
In the reference numerals:
hollow needle 10, beveled aspiration hole 101, side aspiration hole 102, depth adjustment sleeve 11, luer lock 111, rotating sub-button 112, solid needle 21, rotating female button 22.
Detailed Description
The technical scheme of the utility model is described in detail below with reference to the accompanying drawings and the specific embodiments. Wherein like parts are designated by like reference numerals.
Referring to fig. 1 and 2, an embodiment of the present utility model discloses a disposable bone marrow aspiration needle, comprising an outer sleeve needle and a core.
Wherein the outer sleeve needle comprises a hollow needle body 10 and a depth adjusting sleeve 11 sleeved at the tail part of the hollow needle body 10, the rear end of the depth adjusting sleeve 11 is provided with a luer locking joint 111 and a rotary sub-buckle 112, the lining core comprises a solid needle 21 and a rotary female buckle 22 fixedly arranged at the tail end of the solid needle 21, the rotary female buckle 22 is in rotary buckling connection with the rotary sub-buckle 112,
in the embodiment of the present application, it should be noted that the structures of the depth adjusting sleeve 11, the rotary female buckle 22 and the rotary male buckle 112 are consistent with the structures of the disposable bone marrow aspiration biopsy needle (aspiration type) (application number CN 2016300025808) disclosed in the chinese appearance patent, and the detailed description of the structures is omitted in this embodiment.
In the embodiment of the application, the head end of the hollow needle body 10 is provided with the inclined cutting suction hole 101, the shape of the inclined cutting suction hole 101 comprises a circular arc shape, a triangular prism shape and a sword shape, the solid needle 21 is sleeved in the hollow needle body 10, the head end of the solid needle 21 is provided with an inclined cutting puncture surface coplanar with the head end of the hollow needle body 10, the head end of the solid needle 21 is consistent with the shape of the inclined cutting suction hole 101 and is circular arc shape, triangular prism shape or sword shape, the needle point of the inclined cutting puncture surface of the shape is sharp and easy to puncture, and the position of the hollow needle body 10 close to the head end of the hollow needle body is provided with at least one side suction hole 102.
In the embodiments of the present application, the number of side aspiration holes 102 is four and symmetrically disposed along the central axis of the hollow needle 10, and in other alternative embodiments, the number of side aspiration holes 102 is two or three, but not more than four.
In the embodiment of the present application, the side suction holes 102 are elliptical holes or circular holes, and in other alternative embodiments, the side suction holes 102 may be square holes or rounded rectangular holes, and the arc length of the side suction holes 102 along the circumferential direction of the outer sleeve needle is 1/4 of the circumferential arc length of the outer sleeve needle, so as to ensure that the strength of the hollow needle body 10 is not affected by the side suction holes 102.
In the embodiment of the present application, the hollow needle 10 includes a first hollow needle 10, a second hollow needle 10 and a third hollow needle 10, wherein the maximum penetration depth of the first hollow needle 10 into the body is 25mm, the maximum penetration depth of the second hollow needle 10 into the body is 40mm and the maximum penetration depth of the third hollow needle 10 into the body is 55mm, and the outer diameters of the first hollow needle 10, the second hollow needle 10 and the third hollow needle 10 are 2.1mm.
The embodiment of the utility model discloses a disposable bone marrow puncturing aspiration needle, which can enlarge the range of aspiration of bone marrow tissues and bone marrow fluid by using a pressure difference by arranging a chamfer aspiration hole 101 and a plurality of side aspiration holes 102, thereby obtaining bone marrow tissues and bone marrow fluid at different positions, and simultaneously avoiding the problems of difficult aspiration and increased pain of patients caused by pressure difference attenuation and single aspiration hole blockage.
The technical scheme of the utility model is described in detail in the above with reference to the specific embodiments, and the specific embodiments are used for helping to understand the idea of the utility model. Those skilled in the art will appreciate that many modifications and variations are possible in light of the above teaching.

Claims (7)

1. Disposable bone marrow puncture aspiration needle, including overcoat needle and bush core, the overcoat needle includes hollow needle body (10) and cover and establishes at the degree of depth adjusting sleeve (11) of hollow needle body (10) afterbody, the rear end of degree of depth adjusting sleeve (11) is equipped with luer lock joint (111) and rotatory son knot (112), the bush core includes solid needle (21) and sets firmly rotatory box (22) in solid needle (21) tail end, rotatory box (22) are connected with rotatory son knot (112) rotatory lock, its characterized in that:
the head end of the hollow needle body (10) is provided with a beveling suction hole (101), the solid needle (21) is sleeved in the hollow needle body (10), the head end of the solid needle (21) is provided with a beveling puncture surface coplanar with the head end of the hollow needle body (10), and the position of the hollow needle body (10) close to the head end of the hollow needle body is provided with at least one side suction hole (102).
2. A single use bone marrow aspiration needle according to claim 1, wherein the number of side aspiration holes (102) is four and symmetrically disposed along the central axis of the hollow needle body (10).
3. A single use bone marrow aspiration needle according to claim 2, wherein said side aspiration holes (102) are oval or circular holes.
4. A single use bone marrow aspiration needle according to claim 3, wherein the side aspiration holes (102) have an arc length along the circumference of the hollow needle body (10) of at most 1/4 of the arc length of the circumference of the hollow needle body (10).
5. A single use bone marrow aspiration needle according to claim 1, wherein the shape of the beveled aspiration orifice (101) includes circular arc, triangular prism and sword.
6. A single use bone marrow aspiration needle according to claim 1, wherein the hollow needle (10) comprises a first hollow needle, a second hollow needle and a third hollow needle, the first hollow needle penetrating the body to a maximum depth of 25mm, the second hollow needle penetrating the body to a maximum depth of 40mm and the third hollow needle penetrating the body to a maximum depth of 55mm.
7. A single use bone marrow aspiration needle according to claim 1, wherein the hollow needle body (10) has an outer diameter of 2.1mm.
CN202321729399.8U 2023-07-04 2023-07-04 Disposable bone marrow puncture suction needle Active CN220495033U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321729399.8U CN220495033U (en) 2023-07-04 2023-07-04 Disposable bone marrow puncture suction needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321729399.8U CN220495033U (en) 2023-07-04 2023-07-04 Disposable bone marrow puncture suction needle

Publications (1)

Publication Number Publication Date
CN220495033U true CN220495033U (en) 2024-02-20

Family

ID=89867397

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321729399.8U Active CN220495033U (en) 2023-07-04 2023-07-04 Disposable bone marrow puncture suction needle

Country Status (1)

Country Link
CN (1) CN220495033U (en)

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