CN214965959U

CN214965959U - Bone marrow puncture needle for hematology department

Info

Publication number: CN214965959U
Application number: CN202120117476.9U
Authority: CN
Inventors: 阙伊湄; 李春蕊; 徐延洁; 徐孟磊; 吴剑程
Original assignee: Tongji Hospital Affiliated To Tongji Medical College Of Huazhong University Of Science & Technology
Current assignee: Tongji Hospital Affiliated To Tongji Medical College Of Huazhong University Of Science & Technology
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-12-03
Anticipated expiration: 2031-01-15

Abstract

The utility model provides a bone marrow puncture needle for hematology department. The marrow puncture needle comprises a handle, a needle inserting stabilizing frame, a hollow tubular needle core and a needle sleeve, wherein the tail end of the needle core is provided with a needle core adjusting disc with a bone marrow extraction device connecting port, the tail end of the needle sleeve is provided with a needle sleeve support with a needle core inserting hole, the needle tip end of the needle core is inserted into the needle sleeve from the needle core inserting hole, the needle core can rotate in the needle sleeve, and the needle core tip end and the needle sleeve tip end are symmetrically provided with bone marrow extraction holes; the needle inserting stabilizing frame is sleeved on the needle sleeve and is in sliding connection with the needle sleeve, the upper end of the needle inserting stabilizing frame is connected with the needle sleeve support through an elastic component, and the handle is of a hollow sleeve structure, is sleeved outside the needle sleeve and the elastic component and is connected with the needle sleeve support. The utility model discloses not only effectively avoided the nook closing member to extract repeatedly and insert and the loaded down with trivial details operation that the syringe connects repeatedly, still solved the syringe needle and blocked up and lead to operation failure, the unstable scheduling problem of inserting, shortened operating time, reduced the risk of infecting and pricking the skeleton.

Description

Bone marrow puncture needle for hematology department

Technical Field

The utility model belongs to the technical field of medical treatment puncture equipment, concretely relates to hematology department marrow pjncture needle.

Background

A bone marrow puncture needle (hereinafter referred to as a bone puncture needle) is used for collecting bone marrow fluid. Can be used for assisting diagnosis of anemia caused by various reasons, leukemia of various types, thrombocytopenic purpura, multiple myeloma, metastatic tumor, myelodysplastic syndrome, myelofibrosis, malignant histiocytosis, etc. It can help to detect some parasitic diseases, such as malaria, kala-azar, etc. For long-term fever of unknown origin, enlargement of liver, spleen and lymph nodes, bone marrow puncture examination can be carried out to make clear diagnosis. It can also be used for observing the curative effect of some diseases. Has important significance for diagnosis, differential diagnosis and treatment follow-up of various blood diseases.

The bone marrow puncture needle commonly used in clinic is composed of a needle sleeve, a needle core, a needle handle and the like. The process of bone marrow aspiration is as follows: 1. selecting puncture parts (including anterior superior iliac spine (commonly used), posterior superior iliac spine, pectoral stalk, lumbar spinous process, etc.), assisting the patient in placing the body position and then disinfecting the skin conventionally, and locally infiltrating and anaesthetizing to periosteum; 2. adjusting the bone puncture needle fixer to fix on a proper length; 3. the left hand fixes the skin of the puncture part, the right hand holds the bone puncture needle to puncture in the direction vertical to the bone surface, and when the resistance is reduced, the needle head enters the marrow cavity; 4. pulling out the needle core, connecting an injector, and slowly pumping marrow liquid; 5. after the collection of the bone marrow is finished, the needle core is inserted again, the bone puncture needle is pulled out, and the bone puncture needle is disinfected, pasted and pressed to stop bleeding. When the existing bone marrow puncture needle is used for bone marrow puncture, a plurality of problems exist: firstly, the length of the fixator is adjusted to have certain deviation due to the fact that patients are fat and thin and the thickness of cortex lycii is different; secondly, when the bone marrow puncture needle enters bone marrow, for a patient who selects an anterior superior iliac spine point, the situation that a needle body is unstable due to narrow and uneven bone surface during needle insertion easily occurs, and for a patient with thick cortex, the needle needs to be inserted with larger force by an operator, and is harder to retract without a buffer device, so that the bone surface puncture is easily caused, and the pain of the patient is increased; and thirdly, when the bone marrow fluid is sucked, if the bone marrow fluid cannot be sucked, the needle core needs to be inserted again, the needle inserting depth is adjusted in a rotating mode, the needle core is pulled out again, the syringe is connected for sucking, the needle core is repeatedly pulled out and inserted in and connected with the syringe in the process, the operation is complex, blood in the needle cavity is easy to coagulate, the infection risk is increased due to easy pollution, and in addition, the bone puncture needle only has one opening at the tip, and the needle cavity is easily plugged by skin, subcutaneous tissues or bone fragments, so that the operation failure is caused.

Disclosure of Invention

In order to solve the problems and the defects of the prior bone marrow puncture needle in clinical application, the utility model provides a bone marrow puncture needle for hematology department, which can avoid the tedious operation of repeatedly pulling out and inserting the needle core, not only can reduce the infection risk, but also can reduce the risk of operation failure caused by the blocked needle head; the visualization of bone marrow extraction can be realized, the problems that the puncture needle is unstable and easy to shake when being inserted are solved, and the risk of puncturing bones is reduced.

In order to achieve the technical purpose, the utility model provides a bone marrow puncture needle for hematology department, which comprises a needle core, a needle sleeve, a handle and a needle inserting stabilizing frame, wherein the needle core and the needle sleeve are both hollow tubular structures with needle points, the pipe diameter of the needle sleeve is larger than that of the needle core, the tail end of the needle core is provided with a needle core adjusting disc, the needle core adjusting disc is provided with a bone marrow extracting device connecting port communicated with the hollow pipe cavity of the needle core, the tail end of the needle sleeve is provided with a needle sleeve support, the needle sleeve support is provided with a needle core inserting hole communicated with the hollow area of the needle sleeve, the needle tip end of the needle core is inserted into the needle sleeve from the needle core inserting hole, the needle tip end of the needle core is embedded into the needle sleeve tip end, the needle core adjusting disc is overlapped above the needle sleeve support, the needle core can rotate in the needle sleeve, bone marrow extracting holes are symmetrically distributed on the needle core tip end and the needle sleeve tip end, and in the rotating process of the needle core, the sharp end of the needle core is correspondingly communicated or not communicated with the bone marrow extracting hole on the sharp end of the needle sleeve; the needle inserting stabilizing frame is sleeved on the needle sleeve and is in sliding connection with the needle sleeve, the upper end of the needle inserting stabilizing frame is connected with the needle sleeve support through an elastic component, and the handle is of a hollow sleeve structure, is sleeved outside the needle sleeve and the elastic component and is connected with the needle sleeve support.

The utility model discloses further technical scheme: the bone marrow puncture needle also comprises a bone marrow extracting device, the bone marrow extracting device comprises a medical hose and an injector, the medical hose is a transparent hose, one end of the medical hose is connected with a connecting port of the bone marrow extracting device on the needle core adjusting disc, and the other end of the medical hose is connected with a suction port of the injector.

The utility model discloses better technical scheme: be equipped with the rotatory joint part of mutual matching on the eclipsed face that nook closing member adjusting plate and needle cover held in the palm, rotatory joint part sets up the arc swivelling chute on nook closing member adjusting plate or needle cover support and corresponds the rotatory fixture block that sets up on needle cover support or nook closing member adjusting plate including setting up, the rotatory orbit and the arc swivelling chute phase-match of rotatory fixture block, rotatory fixture block embedding arc swivelling chute to when rotatory nook closing member, rotatory fixture block is along the rotatory joint of arc swivelling chute.

The utility model discloses better technical scheme: the needle inserting stabilizing frame is a conical fixing frame, a sliding ring with the inner diameter matched with the outer diameter of the needle sleeve is arranged at the upper end of the needle inserting stabilizing frame, a silica gel pad is arranged on the lower end face of the needle inserting stabilizing frame, the needle inserting stabilizing frame is sleeved on the needle sleeve through the sliding ring in a sliding mode, the bottom end face of the needle inserting stabilizing frame is 0.5cm away from the inserting end of the needle sleeve, one end of the elastic component is fixedly connected to the sliding ring, and the other end of the elastic component is connected to the needle sleeve support.

The utility model discloses better technical scheme: the elastic component is a spring, is sleeved outside the needle sleeve, is embedded into the handle at the upper part and is fixed below the needle sleeve support together with the handle; the handle is provided with anti-skid threads on the outer part and a concave handle neck on the lower part.

The utility model discloses better technical scheme: the needle sleeve is provided with a scale layer.

The utility model discloses better technical scheme: the medical hose is provided with a hose clamp, and the inner wall of the medical hose is coated with anticoagulant.

The utility model discloses better technical scheme: the distribution area of the bone marrow extraction holes is fan-shaped, the area of the fan-shaped area accounts for 1/4 of the area of the sharp end of the needle core or the sharp end of the needle sleeve, each sharp end is provided with two fan-shaped bone marrow extraction hole areas, and the two fan-shaped bone marrow extraction hole areas are symmetrically distributed; the outer surfaces of the needle sleeve support and the needle core adjusting disc are respectively composed of point-shaped protruding surfaces and thread anti-sliding surfaces in an alternating mode, when the point-shaped protruding surfaces of the needle sleeve support and the needle core adjusting disc are completely opposite, the bone marrow extracting hole in the tip end of the needle core is correspondingly communicated with the bone marrow extracting hole in the tip end of the needle sleeve to be in an open state, when the point-shaped protruding surfaces in the needle sleeve support and the thread anti-sliding surfaces of the needle core adjusting disc are completely opposite, the bone marrow extracting hole in the tip end of the needle core and the bone marrow extracting hole in the tip end of the needle sleeve are not communicated to be in a closed state.

The utility model discloses better technical scheme: rotatory joint part is equipped with two, and the radian of the arc swivelling chute of every rotatory joint part is 90 to the central symmetric distribution that nook closing member adjustment dish or needle cover held in the palm is equipped with the draw-in groove respectively at the both ends of every arc swivelling chute, corresponds at the both ends of every rotatory fixture block and is equipped with joint portion, when rotatory fixture block is rotatory to the arbitrary tip of arc swivelling chute along the arc swivelling chute, in the draw-in groove of the corresponding side of joint portion embedding of its tip.

Compared with the prior puncture needle, the utility model has the advantages that:

(1) the utility model discloses a nook closing member and needle cover are the tubular structure that has the needle point, in nook closing member embedding nook closing member, and closely laminate with the nook closing member, and can be at the needle cover internal rotation, the most advanced of nook closing member and needle cover respectively has half seted up the marrow and inhales the hole, there is the hole face and the sclausura face to be interrupted crisscross, the aperture ON the needle cover is identical completely with the most advanced aperture of nook closing member, can correspond and communicate with each other, rotatory nook closing member can make nook closing member and needle cover point portion aperture by crisscross alignment, and then make the bone puncture needle turn to hollow marrow absorption state (ON state) by enclosed state (OFF state), not only effectively avoided the nook closing member to extract repeatedly and insert and the loaded down with trivial details operation that the syringe connects repeatedly, and solved the syringe needle and blocked up the operation failure problem that leads to, and shorten operating time, reduce the infection risk.

(2) The utility model is provided with a conical needle sleeve fixing frame which is hollow and is provided with a needle hole suitable for the needle sleeve in the direction of the longitudinal axis, the conical fixing frame is sleeved on the needle sleeve and can slide up and down along the needle sleeve, the upper end of the conical fixing frame is connected with the handle through a spring buffer device, the lower end surface of the conical fixing frame is contacted with the skin in the needle inserting process, the needle inserting in the vertical direction cannot be influenced, but the needle body is prevented from slowly moving on the horizontal plane, and the problems that the puncture needle is unstable and easy to shake when being inserted are solved; the spring buffer device can also play a role in buffering, prevent the excessive force from puncturing the bone surface and viscera, and reduce the risk of puncturing the bone.

(3) The utility model discloses increased marrow draw-out device, marrow draw-out device includes medical hose and syringe two parts, and medical hose is the hyaline tube, simplifies operator operation flow, makes this step of directness of absorption marrow cooperate the needle insertion by the assistant to accomplish, and whether successfully visual with the marrow extraction, need not connect the syringe repeatedly and can definitely whether take out the marrow liquid.

(4) The contact surface of the needle sleeve fixing frame and the skin of the utility model is provided with the silica gel cushion which is close to the skin, thereby increasing the comfort of the patient and avoiding the damage to the skin of the patient in the process of needle insertion;

(5) the utility model discloses a handle is cavity in it, and the spring part of buffering fixing device is entangled to the part, and its surface of handle has screw thread antiskid, and the lower edge has the handle neck, and when being convenient for puncture, forefinger and thumb withstood the handle and have an effect.

The utility model has the advantages of simple overall structure and convenient use, the unstable problem of needle insertion has been solved at the needle insertion in-process to current bone marrow pjncture needle, has not only effectively avoided the nook closing member to extract repeatedly and inserts and the loaded down with trivial details operation that the syringe connects repeatedly, has solved the syringe needle and has blockked up the operation failure problem that leads to shorten operating time, reduce the infection risk, still reduced the risk of pricking the skeleton.

Figures and their description

FIG. 1 is a schematic view of the overall structure of the present invention

FIG. 2 is a schematic view of the structure of the stylet of the present invention;

fig. 3 is a schematic view of the needle sleeve structure of the present invention;

FIG. 4 is a schematic view of the needle guard and needle insertion stabilizing frame of the present invention after assembly;

FIG. 5 is a schematic structural view of the needle insertion stabilizing frame;

FIG. 6 is a schematic view of the insertion of the hub into the hub;

FIG. 7 is a schematic view of the engagement between the sharp end of the needle core and the sharp end of the needle sheath when the bone marrow aspiration hole of the needle core is opened;

FIG. 8 is a schematic view of the engagement between the sharp end of the needle core and the sharp end of the needle sheath when the bone marrow aspiration hole of the needle core is closed;

FIG. 9 is a schematic view of the engagement between the hub adjustment plate and the needle hub holder;

FIG. 10 is a plan view of the overlapping face of the hub holder and the hub adjustment plate;

figure 11 is a plan view of the overlapping surface of the hub adjustment dial and the hub carrier.

In the figure: the needle comprises a needle core 1, a needle core 100, a needle core tip, a needle sleeve 2, a needle sleeve 200, a needle sleeve tip, a handle 3, a needle inserting stabilizing frame 4, a sliding ring 400, a silica gel pad 401, a bone marrow extracting hole 5, an elastic part 6, a medical hose 7, a needle core adjusting disc 8, a bone marrow extracting device connecting port 800, a needle sleeve support 9, a needle core inserting hole 900, an injector 10, an arc-shaped rotating groove 11, a clamping groove 1100, a rotating clamping block 12, a clamping part 1200 and a hose clamp 13.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 11 are drawings of the embodiment, which are drawn in a simplified manner and are only used for clearly and concisely illustrating the purpose of the embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The embodiment provides a bone marrow puncture needle for hematology department, as shown in figure 1, the bone marrow puncture needle comprises a needle core 1, a needle sleeve 2, a handle 3, a needle inserting stabilizing frame 4 and a bone marrow extracting device, the bone marrow extracting device comprises a medical hose 7 and a syringe 10, the medical hose 7 is a transparent hose, and an anticoagulant is coated on the inner wall of the medical hose 7. As shown in fig. 2 and 3, the stylet 1 and the needle sheath 2 are both hollow tubular structures with needle points, the diameter of the needle sheath 2 is larger than that of the stylet 1, the rear end of the stylet 1 is provided with a stylet adjusting disk 8, the stylet adjusting disk 8 is provided with a bone marrow extracting device connecting port 800 communicated with the hollow lumen of the stylet 1, one end of a medical hose 7 is connected with the bone marrow extracting device connecting port 800 on the stylet adjusting disk 8, the other end is connected with a suction port of a syringe 10, and the medical hose 7 is provided with a hose clamp 13; the medical hose 7 is lubricated by anticoagulant in advance, the inner diameter of the hose is thin and transparent, and red bone marrow liquid can be seen from the hose under the condition of extracting a small amount of bone marrow liquid. The tail end of the needle sleeve 2 is provided with a needle sleeve support 9, the needle sleeve support 9 is provided with a needle core insertion hole 900 communicated with the hollow area of the needle sleeve 2, and the needle sleeve 2 is provided with a scale layer which can record the needle inserting depth. As shown in fig. 4, the needle inserting stabilizing frame 4 is sleeved on the needle sleeve 2 and is connected with the needle sleeve 2 in a sliding manner, the upper end of the needle inserting stabilizing frame 4 is connected with the needle sleeve support 9 through an elastic part 6, the handle 3 is of a hollow sleeve structure, is sleeved outside the needle sleeve 2 and the elastic part 6 and is connected with the needle sleeve support 9, the outer part of the handle 3 is provided with anti-skidding threads, the lower part of the handle is provided with a concave handle neck, and when the puncture is facilitated, the forefinger and the thumb support the handle to exert force.

The embodiment provides a bone marrow puncture needle for hematology department, as shown in figure 6, the needle tip of the needle core 1 is inserted into the needle sleeve 2 from the needle core inserting hole 900, the needle core tip 100 is embedded into the needle sleeve tip 200, and the needle core adjusting disk 8 is overlapped above the needle sleeve support 9. As shown in fig. 9 to 11, be equipped with the rotatory joint part of mutual matching on the overlapping surface of nook closing member adjusting disk 8 and needle cover support 9, rotatory joint part is seted up arc swivelling chute 11 on nook closing member adjusting disk 8 or needle cover support 9 and is corresponded the rotatory fixture block 12 that sets up on needle cover support 9 or nook closing member adjusting disk 8 including setting up, the rotatory orbit and the arc swivelling chute 11 phase-match of rotatory fixture block 12, rotatory fixture block 12 embedding arc swivelling chute 11 to when rotatory nook closing member 1, rotatory fixture block 12 is along the rotatory joint of arc swivelling chute 11. Rotatory joint part is equipped with two, the radian of the arc swivelling chute 11 of every rotatory joint part is 90 to nook closing member adjustment disk 8 or the central symmetric distribution that the needle cover held in the palm 9, both ends at every arc swivelling chute 11 are equipped with draw-in groove 1100 respectively, both ends correspondence at every rotatory fixture block 12 is equipped with joint portion 1200, when rotatory fixture block 12 rotates 11 arbitrary tip to the arc swivelling chute along the arc swivelling chute, the joint portion 1200 embedding of its tip corresponds in the draw-in groove 1100 of side, drive nook closing member 1 at needle cover 2 internal rotation through nook closing member adjustment disk 8. Bone marrow extraction holes 5 are symmetrically distributed on the needle core tip 100 and the needle sleeve tip 200, the bone marrow extraction holes 5 are a plurality of dense small holes which are uniformly distributed on the walls of the needle sleeve tip 200 and the needle core tip 100, the porous surface and the non-porous surface are discontinuously staggered, the small holes on the needle sleeve tip 200 are completely consistent with the small holes on the needle core tip 100 and can be correspondingly communicated, and the needle sleeve 2 is tightly attached to the needle body and the needle tip of the needle core 1. As shown in fig. 7 and 8, the distribution area of the marrow aspiration holes 5 is fan-shaped, and the area of the fan-shaped area occupies 1/4 of the area of the stylet tip 100 or the needle sleeve tip 200, each tip is provided with two fan-shaped marrow aspiration hole areas, and the two fan-shaped marrow aspiration hole areas are symmetrically distributed; as shown in fig. 3, 4 and 6, the outer surfaces of the needle sheath holder 9 and the stylet adjusting disk 8 are respectively composed of dot-shaped protruding surfaces and thread anti-sliding surfaces alternately, and when the dot-shaped protruding surfaces of the needle sheath holder 9 and the stylet adjusting disk 8 are completely aligned, the bone marrow extracting hole 5 on the stylet tip 100 and the bone marrow extracting hole 5 on the needle sheath tip 200 are correspondingly communicated in an open state, so that bone marrow can be sucked, and when the dot-shaped protruding surfaces of the needle sheath holder 9 and the thread anti-sliding surfaces of the stylet adjusting disk 8 are completely aligned, the bone marrow extracting hole 5 on the stylet tip 100 and the bone marrow extracting hole 5 on the needle sheath tip 200 are not communicated in a closed state.

The needle inserting stabilizing frame 4 in the embodiment is a conical fixing frame as shown in fig. 5, the upper end of the conical fixing frame is provided with a sliding ring 400 the inner diameter of which is matched with the outer diameter of the needle sleeve 2, and the lower end surface of the conical fixing frame is provided with a silica gel pad 401; as shown in fig. 4, the needle inserting stabilizing frame 4 is slidably sleeved on the needle sheath 2 through a sliding ring 400, the bottom end surface of the needle inserting stabilizing frame is 0.5cm away from the insertion end of the needle sheath 2, the elastic component 6 is a spring, the needle inserting stabilizing frame is sleeved outside the needle sheath 2, one end of the elastic component is fixedly connected to the sliding ring 400, the other end of the elastic component is connected to the needle sheath support 9, the upper part of the elastic component is embedded into the handle 3, and the elastic component and the handle 3 are fixed below the needle sheath support 9; the needle inserting stabilizing frame 4 and the elastic component 6 form a buffering fixing device which plays a role in buffering and preventing excessive force from puncturing bones and viscera; the skin-friendly silica gel cushion 401 is tightly connected to the bottom of the conical fixing frame, the conical fixing frame is hollow in the longitudinal axis direction, a cylindrical needle hole suitable for a needle sleeve is formed in the longitudinal axis direction, and the buffering fixing device can slide along the longitudinal direction of the needle sleeve through the spring buffering device, so that the buffering effect is achieved in the longitudinal direction, and the needle body fixing effect is achieved on the horizontal plane.

Before the bone marrow puncture is carried out by using the utility model, the operation purpose, possible risks and the like are introduced to the patient. Choose puncture position, help the patient to put the position well, conventional disinfection skin, local infiltration anesthesia to behind the periosteum, can use the utility model discloses accomplish the marrow puncture operation. The needle core adjusting disc 8 and the needle sleeve support 9 are rotationally engaged through a rotary clamping part and the surface lines of the needle core adjusting disc and the needle sleeve support are aligned, the point-shaped protruding surfaces on the side edge of the needle core adjusting disc 8 are provided with small holes corresponding to the needle point, and the thread surfaces are smoothly sealed corresponding to the needle point. The core adjustment disk 8 is rotated to align the bone marrow aspiration hole 5 of the core tip 100 with the closed smooth surface of the needle hub tip 2, i.e., to adjust the bone penetrating needle to a closed state (OFF state). When the needle is inserted from the selected bone puncture point, the medical silica gel pad 401 on the fixed buffer device contacts the skin when the needle is inserted about 0.5cm, and the needle inserting stabilizing frame 4 can slide upwards on the needle sleeve 2 through the sliding ring 400 and the elastic component 6 in the process of continuing the needle insertion. The needle inserting stabilizing frame 4 plays a role in buffering on the longitudinal axis, and prevents the needle from being too forcefully inserted to puncture the bone surface; the contact surface of the bone puncture needle and the skin is increased on the horizontal plane, so that the bone puncture needle body is prevented from shaking due to unstable force when the bone puncture needle is initially inserted. When a decrease in resistance is felt, indicating that the needle has entered the bone marrow cavity, the trocar disk 8 is rotated to align the bone marrow aspiration hole 5 of the trocar tip 100 with the bone marrow aspiration hole 5 of the needle hub tip 2, i.e., to adjust the bone puncture needle to a hollow bone marrow aspiration state (ON state). The assistant opens the hose clamp 13 to draw out bone marrow fluid from the syringe 10, the medical hose 7 is pre-wetted with anticoagulant to prevent blood coagulation, and whether bone marrow fluid is drawn out can be observed through the transparent medical hose 7. If the bone marrow is not extracted successfully, the flexible tube clamp 13 is clamped, the needle core adjusting disk 8 is rotated to adjust the bone puncture needle to be in a closed state (OFF state), the depth of the inserted needle can be directly adjusted, and the bone marrow fluid can be extracted again. The insertion needle core does not need to be repeatedly pulled out and connected with the injector, and the operation is simple. After the extraction of the marrow fluid is finished, the bone puncture needle is adjusted to be in a closed state (OFF state), and the needle is pulled out, disinfected and pasted. The assistant is responsible for smear, tubing and submission.

In the operation process, the needle core 1 is always positioned in the needle sleeve 2, so that the complex operation of repeatedly pulling out the needle core is effectively avoided, and the infection risk caused by reinsertion is reduced. Meanwhile, due to the unique porous design and distribution of the side wall of the needle tip, the operation failure caused by the blockage of the needle tip is effectively avoided. In addition, the buffer device is fixed, so that the needle body can be fixed to assist needle insertion, and the phenomenon that the needle is too forcefully inserted and punctures the bone can be prevented. And finally, a bone marrow extracting device is added, and the step of sucking bone marrow is distributed to an assistant to assist the assistant to complete, so that the operation flow of an operator is simplified, and the bone marrow extraction is visualized. Compared with the prior art, the utility model discloses simple structure, reasonable in design, the practicality is strong, and convenient to use is applicable to blood patient's marrow puncture.

The above description is only one embodiment of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A hematology department bone marrow puncture needle is characterized in that: the marrow puncture needle comprises a needle core (1), a needle sleeve (2), a handle (3) and a needle inserting stabilizing frame (4), wherein the needle core (1) and the needle sleeve (2) are both hollow tubular structures with needle points, the pipe diameter of the needle sleeve (2) is larger than that of the needle core (1), a needle core adjusting disc (8) is arranged at the tail end of the needle core (1), a marrow extraction device connecting port (800) communicated with a hollow pipe cavity of the needle core (1) is arranged on the needle core adjusting disc (8), a needle sleeve support (9) is arranged at the tail end of the needle sleeve (2), a needle core inserting hole (900) communicated with a hollow area of the needle sleeve (2) is arranged on the needle sleeve support (9), the needle tip of the needle core (1) is inserted into the needle sleeve (2) from the needle core inserting hole (900), the needle core tip (100) is embedded into the needle sleeve tip (200), and the needle core adjusting disc (8) is overlapped above the needle sleeve support (9), the needle core (1) can rotate in the needle sleeve (2), marrow extraction holes (5) are symmetrically distributed on the needle core tip (100) and the needle sleeve tip (200), and in the rotating process of the needle core (1), the needle core tip (100) and the marrow extraction holes (5) on the needle sleeve tip (200) are correspondingly communicated or not communicated; the needle inserting stabilizing frame (4) is sleeved on the needle sleeve (2) and is in sliding connection with the needle sleeve (2), the upper end of the needle inserting stabilizing frame (4) is connected with the needle sleeve support (9) through an elastic component (6), the handle (3) is of a hollow sleeve structure and is sleeved outside the needle sleeve (2) and the elastic component (6) and is connected with the needle sleeve support (9).

2. A hematological bone marrow puncture needle according to claim 1, wherein: the bone marrow puncture needle also comprises a bone marrow extracting device, the bone marrow extracting device comprises a medical hose (7) and an injector (10), the medical hose (7) is a transparent hose, one end of the medical hose is connected with a bone marrow extracting device connecting port (800) on the needle core adjusting disc (8), and the other end of the medical hose is connected with a suction port of the injector (10).

3. A hematological bone marrow puncture needle according to claim 1 or 2, wherein: be equipped with the rotatory joint part of mutual matching on the eclipsed face of nook closing member adjustment dish (8) and needle cover support (9), rotatory joint part sets up arc swivelling chute (11) on nook closing member adjustment dish (8) or needle cover support (9) and corresponds rotatory fixture block (12) of setting on needle cover support (9) or nook closing member adjustment dish (8) including setting up, the rotatory orbit and arc swivelling chute (11) phase-match of rotatory fixture block (12), in rotatory fixture block (12) embedding arc swivelling chute (11) to when rotatory nook closing member (1), rotatory fixture block (12) are along the rotatory joint of arc swivelling chute (11).

4. A hematological bone marrow puncture needle according to claim 1 or 2, wherein: the needle inserting stabilizing frame (4) is a conical fixing frame, a sliding ring (400) with the inner diameter matched with the outer diameter of the needle sleeve (2) is arranged at the upper end of the needle inserting stabilizing frame, a silica gel pad (401) is arranged on the lower end face of the needle inserting stabilizing frame, the needle inserting stabilizing frame (4) is slidably sleeved on the needle sleeve (2) through the sliding ring (400), the bottom end face of the needle inserting stabilizing frame is 0.5cm away from the insertion end of the needle sleeve (2), one end of the elastic component (6) is fixedly connected onto the sliding ring (400), and the other end of the elastic component is connected onto the needle sleeve support (9).

5. A hematological bone marrow puncture needle according to claim 1 or 2, wherein: the elastic component (6) is a spring, is sleeved outside the needle sleeve (2), is embedded into the handle (3) at the upper part thereof, and is fixed below the needle sleeve support (9) together with the handle (3); the handle (3) is provided with anti-skid threads on the outside and a concave handle neck on the lower part.

6. A hematological bone marrow puncture needle according to claim 1 or 2, wherein: the needle sleeve (2) is provided with a scale layer.

7. A hematological bone marrow puncture needle according to claim 2, wherein: the medical hose (7) is provided with a hose clamp (13), and the inner wall of the medical hose (7) is coated with anticoagulant.

8. A hematological bone marrow puncture needle according to claim 3, wherein: the distribution area of the bone marrow extraction holes (5) is fan-shaped, the area of the fan-shaped area accounts for 1/4 of the area of the needle core tip (100) or the needle sleeve tip (200), each tip is provided with two fan-shaped bone marrow extraction hole areas, and the two fan-shaped bone marrow extraction hole areas are symmetrically distributed; the outer surfaces of the needle sleeve support (9) and the needle core adjusting disc (8) are respectively composed of point-shaped protruding surfaces and thread anti-sliding surfaces in an alternating mode, when the point-shaped protruding surfaces of the needle sleeve support (9) and the needle core adjusting disc (8) are completely matched, the bone marrow extraction hole (5) in the needle core tip (100) is correspondingly communicated with the bone marrow extraction hole (5) in the needle sleeve tip (200) to be in an open state, when the point-shaped protruding surfaces in the needle sleeve support (9) are completely matched with the thread anti-sliding surfaces of the needle core adjusting disc (8), the bone marrow extraction hole (5) in the needle core tip (100) and the bone marrow extraction hole (5) in the needle sleeve tip (200) are not communicated to be in a closed state.

9. A hematological bone marrow puncture needle according to claim 8, wherein: rotatory joint part is equipped with two, and the radian of the arc swivelling chute (11) of every rotatory joint part is 90 to the central symmetry who holds in the palm (9) with nook closing member adjustment dish (8) or needle cover, is equipped with draw-in groove (1100) respectively at the both ends of every arc swivelling chute (11), corresponds at the both ends of every rotatory fixture block (12) and is equipped with joint portion (1200), when rotatory fixture block (12) rotate to arc swivelling chute (11) arbitrary tip along arc swivelling chute (11), in the draw-in groove (1100) of the corresponding side of joint portion (1200) embedding of its tip.