CN213156073U

CN213156073U - Bone marrow puncture needle

Info

Publication number: CN213156073U
Application number: CN202020989930.5U
Authority: CN
Inventors: 章俏雷; 方炳木; 兰义芬
Original assignee: Lishui City Peoples Hospital
Current assignee: Lishui City Peoples Hospital
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-05-11
Anticipated expiration: 2030-06-03

Abstract

The utility model provides a marrow pjncture needle, including the nook closing member, the needle tubing, the nook closing member cooperation sets up in the needle tubing, the needle tubing upper end fixing has the needle tubing handle, the nook closing member upper end fixing has the nook closing member handle, needle tubing lower part one side is provided with the side pipe, the needle tubing that is close to the needle tubing handle is provided with spherical cavity, the internal rotation of spherical cavity is provided with the switch ball, the vertical direction of switch ball communicates with each other with the needle tubing, switch ball horizontal direction is closed mutually with the needle tubing, one side of switch ball is fixed with the regulation pole, it stretches out outside the needle tubing to adjust the pole, it is fixed with the adjusting knob to adjust the pole outer end, be provided with the locating part between switch ball and the spherical cavity, the locating part sets up the opposite side. The utility model discloses a this kind of marrow pjncture needle, simple structure, design benefit reduces the infection that the cross infection of nook closing member and the bacterium in the needle tubing got into the marrow that the nook closing member extracted the nook closing member completely, and the marrow extraction of side pipe is more smooth and easy, laborsaving, convenient and fast.

Description

Bone marrow puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a marrow puncture needle.

Background

Bone marrow aspiration is a common diagnostic technique for collecting bone marrow fluid, and is used for blood cell morphology examination, hematopoietic stem cell culture, cytogenetic analysis, pathogenic biology examination and the like in clinic to assist clinical diagnosis, observation of curative effect, judgment of prognosis and the like. The inventor needs to puncture the bone marrow of a patient in the research process of establishing and applying an early warning scoring system (MEWS) for intracranial hemorrhage (ICH) of an Acute Leukemia (AL) patient.

The bone marrow puncture operation needs to use a bone marrow puncture needle, in the puncture process, medical care personnel fix the skin of a puncture part with a thumb and an index finger of a left hand, hold the needle with a right hand to vertically puncture the bone surface, rotate left and right after the puncture needle contacts the bone, slowly puncture the bone, indicate that the puncture needle enters a bone marrow cavity when the resistance disappears and the puncture needle is fixed in the bone, completely extract a needle core, and extract the bone marrow from the upper part or the side part of a needle tube through an injector; when the side part of the needle tube is used for extracting bone marrow, the needle tube is contacted with air due to the complete extraction of the needle core, bacteria easily enter the needle tube to pollute the bone marrow, and when the side part is used for extracting the bone marrow, the upper part of the needle tube is in an open state contacted with the air, so that the extraction of the bone marrow at the side part is not facilitated.

In addition, in the operation process of the needle tube and the needle core, the needle tube handle and the needle core handle are smooth, so that the grip of the needle tube handle is insufficient, the needle core handle is easy to slip, and the accurate operation is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior research, the utility model provides a marrow puncture needle, which has simple structure and ingenious design, reduces the cross infection that the needle core is completely extracted out by the needle core and the infection that the bacteria in the needle tube enter the marrow, and the marrow extraction of the side tube is more smooth and easy, labor-saving, convenient and fast. In order to achieve the above-mentioned functions, the above technical problems of the present invention can be solved mainly by the following technical solutions:

the utility model provides a marrow pjncture needle, including the nook closing member, the needle tubing, the nook closing member cooperation sets up in the needle tubing, the needle tubing upper end fixing has the needle tubing handle, the nook closing member upper end fixing has the nook closing member handle, needle tubing lower part one side is provided with the side pipe, the needle tubing that is close to the needle tubing handle is provided with spherical cavity, the internal rotation of spherical cavity is provided with the switch ball, the vertical direction of switch ball communicates with each other with the needle tubing, switch ball horizontal direction is closed mutually with the needle tubing, one side of switch ball is fixed with the regulation pole, it stretches out outside the needle tubing to adjust the pole, it is fixed with the adjusting knob to adjust the pole outer end, be provided with the locating part between switch ball and the spherical cavity, the locating part sets up the opposite side. The arrangement of the structure ensures that the needle core does not need to be completely pulled out when the bone marrow is extracted, the risk of infection caused by the complete pulling-out of the needle core and the bacterial infection caused by the air entering the needle tube are reduced, and the lower part of the needle tube is in a closed state through the switch ball when the bone marrow is extracted, thereby being beneficial to the more smooth and labor-saving extraction of the bone marrow.

Furthermore, the limiting part comprises a limiting block and a limiting groove matched with the limiting block, the limiting block is fixedly arranged on the outer side of the switch ball opposite to the adjusting rod, and the limiting groove is arranged in the spherical cavity and corresponds to the limiting block. The limiting block on the switch ball and the limiting groove of the spherical cavity are arranged to help the adjusting rod to limit after adjustment.

Furthermore, the limiting groove comprises a transverse groove and a vertical groove, and the transverse groove and the vertical groove are perpendicular to each other to form a groove with a cross-shaped vertical section. The limiting block on the switch ball 1 and the limiting groove of the spherical cavity are arranged to help the adjusting rod to limit after adjustment.

Further, the side tube and the needle tube are arranged in an upward inclined manner at 30-60 degrees. The side tube is inclined upwards to be closer to the needle tube, so that the side tube can conveniently extract the bone marrow through the injector.

Furthermore, the side of the adjusting rod extending out of the needle tube is not on the same side as the side tube. The operation of the adjusting rod is convenient without being influenced by the side pipe.

Furthermore, a through hole slightly larger than the inner diameter of the needle tube is arranged in the vertical direction of the switch ball, and a needle point groove matched with the tip end of the needle core is arranged at the outer end of one side of the switch ball in the horizontal direction. The support and the placement of the needle core are convenient when the needle core is half pulled out.

Furthermore, a sealing gasket is arranged at the contact position of the adjusting rod and the needle tube. The sealing effect of the switch ball and the spherical cavity is facilitated, and the closing state of the switch ball and the spherical cavity is better.

Further, arc-shaped grooves are uniformly formed in the handle of the stylet. Better holding is helpful for the rotation force application of the stylet, and the labor is saved.

Furthermore, the lower part of the needle tube handle is provided with threads. The friction force between the hand and the needle tube handle is increased, so that the needle tube is convenient to hold and apply force.

When the bone marrow puncture needle is used, the switch ball is communicated with the needle tube by rotating the adjusting button before use, and the switch ball is limited by pressing the limiting block in the limiting block into the transverse groove in the limiting groove by pressing the adjusting button. The on-off valve on the hose is closed.

Then puncture with the marrow puncture needle, the skin of puncture position is fixed to doctor's thumb, forefinger during puncture, another handheld needle pierces perpendicularly in the bone surface, through the application of force of nook closing member handle messenger marrow puncture needle pipe connector contact sclerotin then the left and right sides rotation, slowly bore thorn sclerotin, when feeling the resistance disappearance, and puncture tube has been fixed in the bone, show to have got into the marrow chamber, at this moment, take out the nook closing member outward, take out the switch ball upper portion near the lateral canal upper portion, through drawing knob outwards, make the stopper pull out the transverse groove of spacing groove, cancel the spacing of adjusting the pole, make the regulation pole be in adjustable state.

The adjusting rod is driven by rotating the adjusting button to enable the switch ball to rotate by 90 degrees, the limiting block is pressed into the vertical groove of the limiting groove to limit by pressing the knob after the switch ball rotates by 90 degrees, the needle tube at the lower part of the switch ball is in a closed state, and the needle core is placed in the needle tip groove of the switch ball. At this time, the on-off valve is opened again, and the bone marrow is aspirated by the syringe.

At the moment, because the upper part and the lower part of the needle tube are in a closed state through the switch ball, when the injector is used for extracting the bone marrow, the extraction is easier, the extraction of the injector cannot be influenced because the needle tube is in an unblocked state, and the infection caused by the fact that the needle tube is in a communicated state with air because the needle core is completely pulled out and bacteria enter the needle tube cannot occur. After the extraction is finished, the switch valve is closed to prevent the bone marrow from overflowing or infecting, and when the extraction is performed again, the switch valve is opened to perform the extraction.

The beneficial effects of the utility model.

1. The side tube and the needle tube of the utility model form an angle of 30-60 degrees, so that the extraction of the bone marrow is smoother, and the closer the angle of the side tube and the needle tube is to the needle tube, the smaller the resistance is, the easier the extraction is.

2. The utility model discloses a this kind of needle tubing handle front portion is provided with the screw thread, and better gripping helps the rotatory application of force of nook closing member, and is more laborsaving. The needle core handle is provided with an arc-shaped groove, so that the friction force between a hand and the needle tube handle is increased, and the holding and force application are facilitated.

3. The utility model discloses a one side of this kind of switch ball horizontal direction is provided with the needle point hole groove that matches with the nook closing member most advanced, and the support and the placing of nook closing member when the nook closing member of being convenient for is half extracted.

4. The utility model discloses a this kind of bone marrow pjncture needle, the needle tubing need not be extracted completely to the nook closing member for the nook closing member can not extract completely with the risk of bacterium cross infection in the air, be provided with spherical cavity and its switch ball on the needle tubing, the switch ball communicates with each other with the needle tubing during the nook closing member puncture, switch ball and needle tubing are in the closure state when having punctured the extraction marrow, it is more laborsaving when the syringe extraction marrow of side pipe, the tilt up 30-60 degrees between side pipe and the needle tubing be provided with and help the more smooth and easy extraction of bone marrow liquid.

5. The utility model discloses a this kind of marrow pjncture needle, simple structure, design benefit, the setting of the spherical cavity of switch ball and needle tubing for the needle core needn't extract the needle tubing completely, reduces the cross infection that the needle core was extracted completely to the needle core and the infection that the bacterium in the needle tubing got into the marrow, and the marrow extraction of side pipe is more smooth and easy, laborsaving, convenient and fast.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the marrow puncture needle of the present invention (the switch ball is in communication with the spherical cavity);

FIG. 2 is an enlarged sectional structure view of the spherical cavity of the bone marrow puncture needle along the horizontal A-A direction; (the switch ball is communicated with the spherical cavity body);

fig. 3 is a schematic structural view of the marrow puncture needle of the present invention (the switch ball and the spherical cavity are in a closed state);

FIG. 4 is an enlarged sectional view of the spherical cavity of the bone marrow puncture needle of the present invention along the horizontal B-B direction; (the switch ball and the spherical cavity are in a closed state);

fig. 5 is an enlarged sectional structure diagram of the spherical cavity of the bone marrow puncture needle along the vertical direction.

In the figure: 1. a needle core; 2. a needle tube; 3. a needle tube handle; 4. a stylet handle; 5. a side tube; 6. a spherical cavity; 7. a switch ball; 8. adjusting a rod; 9. an adjusting knob; 10. a limiting member; 101. a limiting block; 102. a limiting groove; 11. a hose; 12. an injector; 13. an on-off valve; 14. a needle point groove; 15. a gasket; 16. an arc-shaped groove; 17. and (4) threading.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

As shown in fig. 1-5, the bone marrow puncture needle in this embodiment comprises a needle core 1 and a needle tube 2, the needle core 1 is disposed in the needle tube 2 in a matching manner, a needle tube handle 3 is fixed on the upper end of the needle tube 2, a needle core handle 4 is fixed on the upper end of the needle core 1, a side tube 5 is disposed on one side of the lower portion of the needle tube 2, a spherical cavity 6 is disposed on the needle tube 2 near the needle tube handle 3, a switch ball 7 is rotatably disposed in the spherical cavity 6, the switch ball 7 is vertically communicated with the spherical cavity 6, the switch ball 7 is horizontally closed with the spherical cavity 6, an adjusting rod 8 is fixed on one side of the switch ball 7, the adjusting rod 8 extends out of the needle tube 2, an adjusting button 9 is fixed on the outer end of the adjusting rod 8, a limiting member 10 is disposed between the switch ball 7 and the spherical cavity 6, the limiting member 10 is disposed on the opposite side of the adjusting rod 8, the hose 11 is provided with an on-off valve 13. The arrangement of the structure ensures that the needle core 1 does not need to be completely pulled out when the bone marrow is extracted, the risk of infection caused by the complete pulling-out of the needle core 1 and the bacterial infection caused by the air entering the needle tube 2 are reduced, and the lower part of the needle tube 2 is in a closed state through the switch ball 7 when the bone marrow is extracted, thereby being beneficial to the more smooth and labor-saving extraction of the bone marrow.

The limiting member 10 comprises a limiting block 101 and a limiting groove 102 matched with the limiting block 101, the limiting block 101 is fixedly arranged on the outer side of the switch ball 7 opposite to the adjusting rod 8, and the limiting groove 102 is arranged in the spherical cavity 6 at a position corresponding to the limiting block 101.

The limiting groove 102 comprises a transverse groove and a vertical groove, and the transverse groove and the vertical groove are mutually perpendicular to form a groove with a cross-shaped vertical section.

The arrangement of the limiting block 101 on the switch ball 101 and the limiting groove 102 of the spherical cavity 6 is helpful for limiting the adjusting rod 8 after adjustment.

Side tube 5 is angled 30-60 degrees upward from syringe 2 such that side tube 5 is angled upward closer to syringe 2 to facilitate the extraction of bone marrow from side tube 5 by syringe 12.

The side of the regulating rod 8 extending out of the needle tube 2 is not on the same side as the side tube 5. The operation of the adjustment lever 8 is facilitated without being affected by the side tube 5.

A through hole which is slightly larger than the inner diameter of the needle tube 2 is arranged in the vertical direction of the switch ball 7, and a needle point groove 14 which is matched with the tip of the needle core 1 is arranged at the outer end of one side of the switch ball 7 in the horizontal direction. The support and the placement of the needle core 1 are convenient when the needle core 1 is half pulled out.

The joint of the adjusting rod 8 and the needle tube 2 is provided with a sealing gasket 15. The sealing function of the switch ball 7 and the spherical cavity 6 is facilitated, and the switch ball 7 and the spherical cavity 6 are better closed.

The needle core handle 4 is evenly provided with arc-shaped grooves 16. Better holding is helpful for the rotation force application of the stylet 1, and more labor is saved.

The lower part of the needle tube handle 3 is provided with a thread 17. The friction force between the hand and the needle tube handle 3 is increased, so that the holding and force application are facilitated.

The utility model discloses a theory of operation and process.

As shown in figures 1-5, when the marrow puncture needle is used, the switch ball 7 is communicated with the needle tube 2 by rotating the adjusting button 9 before use, and the switch ball 7 is limited by pressing the adjusting button 9 to press the limiting block 101 in the limiting block 10 into the transverse groove in the limiting groove 102. The on-off valve 13 on the hose 11 is closed.

Then use the bone marrow puncture needle to puncture, while puncturing, the doctor fixes the skin of the puncture position with thumb and forefinger, another hand-held needle pierces vertically in the bone surface, the force is applied through the needle core handle 4 to make the bone marrow puncture needle tube 2 rotate left and right after contacting the bone, drill the bone slowly, when feeling that the resistance disappears, and the puncture tube is fixed in the bone, it shows that has entered the marrow cavity, at this moment, the needle core 1 is drawn out to the upper part of the switch ball 7 near the upper part of the lateral tube 5, through pulling the knob 9 outwards, make the limited block 101 pull out the transverse groove of the limited groove 102, cancel the limit of the regulation lever 8, make the regulation lever 8 in the adjustable state.

The adjusting rod 8 is driven by rotating the adjusting button 9 to enable the switch ball 7 to rotate 90 degrees, the limiting block 101 is pressed into the vertical groove of the limiting groove 102 to limit the position through pressing the knob 9 after the switch ball 7 rotates 90 degrees, the needle tube at the lower part of the switch ball 7 is in a closed state, and the needle core 1 is placed in the needle point groove 14 of the switch ball 7. At this time, the on-off valve 13 is opened again, and the syringe 12 is used to draw out bone marrow.

At this time, since the upper and lower parts of the needle tube 2 are in a closed state by the switching ball 7, when the syringe 12 is used to draw bone marrow, the bone marrow is more easily drawn without affecting the drawing of the syringe 12 due to the fact that the needle tube 2 is in an open state, and without causing infection due to the fact that the needle core 1 is completely drawn out and the needle tube 2 is in a connected state with air so that bacteria enter the needle tube 2. After the aspiration, the on-off valve 13 is closed to prevent bone marrow from overflowing or infecting the bone marrow, and when the aspiration is performed again, the on-off valve 13 is opened to perform the aspiration.

The side tube 5 and the needle tube 2 form an angle of 30-60 degrees, so that the bone marrow is more smoothly extracted, and the closer the angle between the side tube 5 and the needle tube 2 is to the needle tube, the smaller the resistance is, and the easier the extraction is.

The front part of the needle tube handle 3 is provided with the thread 17, so that the needle tube handle can be better held, the rotation force application of the needle core 1 is facilitated, and the labor is saved. The needle core handle 4 is provided with an arc-shaped groove 16, so that the friction force between the hand and the needle tube handle 3 is increased, and the holding and force application are facilitated.

One side of the switch ball 7 in the horizontal direction is provided with a needle point hole groove matched with the tip of the needle core 1, so that the needle core 1 can be supported and placed conveniently when the needle core 1 is half pulled out.

According to the bone marrow puncture needle, the needle core 1 does not need to be completely pulled out of the needle tube 2, so that the needle core 1 does not have the risk of complete pulling out and cross infection with bacteria in the air, the needle tube 2 is provided with the spherical cavity 6 and the switch ball 7 thereof, the switch ball 7 is communicated with the needle tube 2 during puncture of the needle core 1, the switch ball 7 and the needle tube 2 are in a closed state when the bone marrow is completely extracted, so that the labor is saved when the injector 12 of the side tube 5 extracts the bone marrow, and the arrangement of 30-60 degrees upward inclination between the side tube 5 and the needle tube 2 is favorable for smooth extraction of bone marrow liquid.

The marrow puncture needle has a simple structure and is ingenious in design, the switching ball 7 and the spherical cavity 6 of the needle tube 2 are arranged, so that the needle core 1 does not need to be completely pulled out of the needle tube 2, the cross infection that the needle core 1 is completely pulled out of the needle core 1 and the infection that bacteria in the needle tube 2 enter marrow are reduced, and the marrow of the side tube 5 is more smoothly and conveniently and quickly extracted.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a marrow pjncture needle, includes nook closing member (1), needle tubing (2), nook closing member (1) cooperation sets up in needle tubing (2), needle tubing (2) upper end is fixed with needle tubing handle (3), nook closing member (1) upper end is fixed with nook closing member handle (4), its characterized in that: a side tube (5) is arranged on one side of the lower part of the needle tube (2), the needle tube (2) close to the needle tube handle (3) is provided with a spherical cavity (6), a switch ball (7) is arranged in the spherical cavity (6) in a rotating manner, the vertical direction of the switch ball (7) is communicated with the spherical cavity (6), the horizontal direction of the switch ball (7) is closed with the spherical cavity (6), one side of the switch ball (7) is fixed with a regulating rod (8), the regulating rod (8) extends out of the needle tube (2), the outer end of the regulating rod (8) is fixed with a regulating button (9), a limiting part (10) is arranged between the switch ball (7) and the spherical cavity (6), the limiting part (10) is arranged on the opposite side of the regulating rod (8), the other end of the side tube (5) is connected with a hose (11), and the other end of the hose (11) is connected with, the hose (11) is provided with a switch valve (13).

2. A bone marrow puncture needle according to claim 1, characterized in that: the limiting part (10) comprises a limiting block (101) and a limiting groove (102) matched with the limiting block (101), the limiting block (101) is fixedly arranged on the outer side of the switch ball (7) opposite to the adjusting rod (8), and the limiting groove (102) is arranged in the spherical cavity (6) and corresponds to the limiting block (101).

3. A bone marrow puncture needle according to claim 2, characterized in that: the limiting groove (102) comprises a transverse groove and a vertical groove, and the transverse groove and the vertical groove are perpendicular to each other to form a groove with a cross-shaped vertical section.

4. A bone marrow puncture needle according to claim 1, characterized in that: the side tube (5) and the needle tube (2) are arranged in an upward inclined manner by 30-60 degrees.

5. A bone marrow puncture needle according to claim 1, characterized in that: the side of the adjusting rod (8) extending out of the needle tube (2) is not on the same side with the side tube (5).

6. A bone marrow puncture needle according to claim 1, characterized in that: the switch ball (7) vertical direction is provided with the through-hole slightly bigger with needle tubing (2) internal diameter, one side outer end of switch ball (7) horizontal direction is provided with pinpoint groove (14) with the most advanced matching of nook closing member (1).

7. A bone marrow puncture needle according to claim 1, characterized in that: and a sealing gasket (15) is arranged at the contact part of the adjusting rod (8) and the needle tube (2).

8. A bone marrow puncture needle according to claim 1, characterized in that: arc-shaped grooves (16) are uniformly formed in the stylet handle (4).

9. A bone marrow puncture needle according to claim 1, characterized in that: the lower part of the needle tube handle (3) is provided with a thread (17).