CN111436975A

CN111436975A - Children's marrow puncture collection needle and subassembly thereof

Info

Publication number: CN111436975A
Application number: CN202010260186.XA
Authority: CN
Inventors: 查子慧; 赵承燕; 高云霞; 孟珊珊; 王爱甜; 杨建�
Original assignee: Shandong Qianfoshan Hospital
Current assignee: Shandong Qianfoshan Hospital
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-07-24

Abstract

The invention relates to the field of bone marrow collection devices, in particular to a child bone marrow puncture collection needle and a child bone marrow puncture collection needle assembly. The method comprises the following steps: the puncture needle comprises an injector, a flexible tube and a puncture needle, wherein one end of the flexible tube is provided with an amplifying part, a nipple of the injector is connected with the amplifying part, and the amplifying part is provided with a filter. The other end of the flexible tube is connected with the puncture needle, a holding part is fixed on the side wall of the puncture needle, and a side hole is formed in the position, close to the needle point, on the side wall of the puncture needle. The bone puncture collection needle provided by the invention not only can be suitable for bone puncture of older children, but also can well avoid the problems of large tumor cells, more fat and easy tube blockage in bone marrow when bone dregs exist. In addition, the children bone marrow puncture assembly can fix the puncture point to prevent the puncture point from shifting, and can restrict the movement of the sick children to improve the success rate of operation.

Description

Children's marrow puncture collection needle and subassembly thereof

Technical Field

The invention relates to the field of bone marrow collection devices, in particular to a child bone marrow puncture collection needle and a child bone marrow puncture collection needle assembly.

Background

The information disclosed in this background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Bone marrow aspiration is a diagnostic technique commonly used for collecting bone marrow fluid, and the examination includes cytology, protozoa and bacteriology. The bone marrow puncture fluid is commonly used for the morphological examination of blood cells in clinic, and can also be used for hematopoietic stem cell culture, cytogenetic analysis, pathogenic biological examination and the like to assist in clinical diagnosis, observation of curative effect, judgment of prognosis and the like. Indications for bone perforation include mainly: various blood system diseases (such as anemia, thrombocytopenia, leukemia, multiple myeloma, myelodysplastic syndrome, myelofibrosis, malignant histiocytosis and metastatic tumor), some parasitic diseases (such as malaria and kala-azar), enlargement of liver, spleen and lymph nodes and the like.

The position and parts of the osteopathy usually selected include sternum and anterior superior iliac spine, and the position of the osteopathy is required to be horizontal; lateral position of spinous process and posterior superior iliac spine; the posterior superior iliac spine can also be selected to be in a prone position; the small shin baby can be in a supine position, the elderly can be in a sitting position, the shank is bent, the sole and the hip are in a horizontal line, and the popliteal fossa forms an obtuse angle.

The bone puncture operation process comprises the following steps: 1. the operator teaches the purpose and necessity of the puncture to the patient and family members, and then executes the puncture after signing consent. 2. The patient's bed number, name, hospital number are checked again, and the contraindication of bone puncture is eliminated. 3. An operator washes hands, stands on the left side of the patient, assists the patient to put a corresponding body position according to the illness state of the patient, fully exposes the puncture part, and gives a mark for positioning. 4. The puncture package is opened and the operator wears sterile gloves. (under strict aseptic conditions, an assistant hands the disposable hole towel and the injector to an operator and places the disposable hole towel and the injector in the puncture bag), checks whether the articles in the puncture bag are complete or not, and checks whether the injector leaks or not. 5. The assistant holds the holding forceps to clamp 0.5% iodophor and 75% alcohol cotton balls into 2 disinfection cups respectively (note that the holding forceps should be held horizontally or downwards, the whole process avoids pollution). An operator holds the forceps with the left hand, holds an iodophor cotton ball, horizontally crosses into the bent hemostatic forceps of the right hand, disinfects local skin for 3 times in a clockwise direction by taking a puncture point as a center (1/3 is pressed on each 1 circle), disinfects the local skin for 3 times by using an alcohol cotton ball after drying the local skin with the diameter of about 15cm., the range is smaller than that of one time, and the last 1 time exceeds the outermost layer of the iodophor. During disinfection, the bent disc is placed on the side of a patient, and the disinfected cotton balls and the bent hemostatic forceps are placed in the disinfection bowl and taken away by an assistant. 6. Anaesthetizing, and laying aseptic hole towel. Checking the anesthetic with assistant by drawing 3ml of 2% lidocaine with 5ml syringe; the skin of the puncture site was fixed with the thumb and forefinger of the left hand, and local skin, subcutaneous and periosteal anaesthesia was performed with 2% lidocaine. The needle is horizontally inserted, a skin dune with the diameter of about 0.5cm is punched, then the bone surface is vertical to the bone surface until the hard periosteum is anesthetized, the upper, lower, left and right multi-point anesthetics are applied to fully anesthetize and reduce the pain of a patient during puncture, and the gauze covers the puncture point and is slightly pressed by the thumb of the right hand to fully infiltrate. 7. The left hand fixes the puncture part, the right hand holds the needle, the needle is vertically punctured with the bone surface, and the needle sequentially penetrates through the skin, the subcutaneous tissue, the muscle tissue and the cortical bone to enter the marrow cavity, when the puncture resistance disappears suddenly and the puncture needle is fixed in the bone, the puncture needle is indicated to enter the marrow cavity. 8. The marrow is sucked by a 20ml syringe with proper force, smeared or kept for taking a specimen. 9. After the needle is pulled out, the puncture part is disinfected and covered by a sterile application, and the local compression hemostasis is realized. 10. And (5) finishing the articles and recording.

In the clinical application, the number of the bone puncture needles usually selected for pediatric bone puncture is 12-14, and the number of the bone puncture needles usually selected for adult bone puncture is 16-18. However, the present inventors found that: the bone puncture needle has thick and long needle head, can cause great pain and even injury to patients in the puncture process, and is easy to cause fear and anxiety. In addition, if a small amount of bone marrow fluid is collected for definite diagnosis, a 7 # scalp needle is usually connected with a 20ml empty needle for bone marrow blood collection in clinical children. However, the needle is only suitable for infants or children with small age or soft bone, the needle is easy to bend when children with 5 years old or older and hard bone are subjected to bone puncture, and the problem of tube blockage is easily caused when tumor cells in bone marrow are large, fat is large or bone residues exist in bone marrow because the inner diameter of a No. 7 scalp needle is small, so that collection failure is caused.

Disclosure of Invention

In view of the above problems, the present invention provides a child bone marrow puncture collection needle and its assembly. The bone puncture collection needle provided by the invention not only can be suitable for bone puncture of older children, but also can well avoid the problems of large tumor cells, more fat and easy tube blockage in bone marrow when bone dregs exist. In addition, the children bone marrow puncture assembly of the invention can fix the puncture point. In order to achieve the above purpose, the present invention discloses the following technical solutions.

In a first aspect of the present invention, a children's bone marrow puncture collection needle is disclosed, comprising: the puncture needle comprises an injector, a flexible tube and a puncture needle, wherein one end of the flexible tube is provided with an amplifying part, a nipple of the injector is connected with the amplifying part, and the amplifying part is provided with a filter. The other end of the flexible tube is connected with the puncture needle, a holding part is fixed on the side wall of the puncture needle, and a side hole is formed in the position, close to the needle point, on the side wall of the puncture needle.

Furthermore, the filter is a filter screen with the aperture of 25mm-30 mm. By arranging the filter, tumor cells, fat and bone residues in bone marrow can be filtered out, and the passing of the bone marrow is not influenced. In addition, the collecting needle of the present invention can collect a part of bone residues, thereby reducing the bone residues remaining in the bone marrow.

Preferably, the enlargement portion is detachably connected to the flexible pipe, for example, by screwing.

Further, enlarge for can dismantling the connection between the nipple of portion and syringe, the nipple is pegged graft in enlargement portion promptly, and both form sealing connection on the contact surface, and the marrow is revealed when avoiding gathering, also is convenient for simultaneously take off the syringe after the marrow is gathered and is accomplished and further handle the marrow.

Furthermore, scales are arranged on the flexible tube and extend from one end, close to the puncture needle, of the flexible tube to the other end of the flexible tube. Optionally, the scale ranges from 0ml to 0.2ml or from 0ml to 1.0 ml; the main function of the scale is to accurately control the bone marrow collection amount.

Furthermore, the puncture needle is a No. 9 scalp needle head, and the bending phenomenon of the needle head can not happen generally, so that the bone puncture requirement of older children is met; and the inner diameter of the 9-gauge needle is larger, which is helpful to prevent the blockage of the tube and also reduces the output resistance of the marrow blood.

Furthermore, the holding part is composed of two arc-shaped rigid parts which are symmetrically fixed at one end of the puncture needle close to the flexible tube. The grip part mainly has the functions of applying acting force to the puncture needle for puncture and pulling out the puncture needle after the collection of bone marrow is completed. Another benefit of using a grip to assist with lancing is that it helps to reduce the chance of infection.

Furthermore, the number of the side holes is 1-2, one of the functions of the side holes is to prevent the needle tip from being blocked and still collect bone marrow, but the strength of the needle tip is easily affected by too many side holes. Preferably, the side hole is positioned on one side of the bevel of the needle tip of the puncture needle.

Further, the flexible pipe is made of food-grade plastics. Preferably any one of PET, PP, PE, etc. Optionally, the flexible tube has a length of 4.5-6 cm.

Preferably, the size of the syringe is 10ml, the syringe has small volume and proper suction force, the generated pressure is also safely applicable in the central venipuncture process, and the bone puncture operation is greatly facilitated.

The invention discloses a children bone marrow puncture assembly, which comprises the children bone marrow puncture collection needle and a puncture point fixing device, wherein the puncture point fixing device comprises a first restraint part, a second restraint part and a sticking part, the first restraint part and the second restraint part are both arc-shaped structures, the two arc-shaped structures form the restraint part which is detachably connected through a buckle, the restraint part is a ring body with an opening, the restraint part is an elastic structure, the sticking parts are fixed at two ends of the opening, and the sticking surface of the sticking part faces the inner side of the ring body.

Further, the first and second restriction members are each preferably made of any one of PET, PP, PE, etc.

The puncture point fixing device is very suitable for fixing the puncture point when the spinous process and the posterior superior iliac spine are in the lateral decubitus position and the anterior superior iliac spine is in the horizontal decubitus position. In addition, in the present invention, the degree of tightness of the restraining member can be adjusted as required according to the size of the patient by designing the restraining member separately.

Compared with the prior art, the invention has the following beneficial effects:

(1) the bone puncture collecting needle of the invention provides a place for installing a filter for filtering tumor cells, fat and bone residues in bone marrow by arranging the enlargement part at one end of the flexible tube, and simultaneously, the enlargement part is also used as a connecting part with the nipple of the injector, thereby meeting the connection between the injector and the flexible tube and ensuring that the bone marrow puncture collecting needle of the invention has the function of filtering bone marrow.

(2) According to the invention, the acting force is applied to the puncture needle by the holding part for puncture, and the puncture needle is pulled out after the bone marrow collection is completed, so that the puncture is convenient, the holding part assists in puncture and the puncture needle does not touch, and the infection probability is reduced.

(3) The inventor finds that: for infants and children, fear anxiety emotions cannot be controlled due to small age, the infants and children are extremely difficult to cooperate in the actual operation process, crying, severe distortion of limbs and body twitching during crying all increase the difficulty of operators, and even if a plurality of assistants assist in fixing body positions, the skin of an infant patient is tender and soft, so that the infant patient is difficult to achieve an ideal state. The puncture point fixing device is used for tightening the soft skin of the infant patient to prevent the puncture point from shifting, and can restrict the movement of the infant patient to improve the success rate of operation.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of a child bone marrow puncture collection needle according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a puncture point fixing device in an embodiment of the present invention.

Fig. 3 is a schematic view of the puncture site fixing device in a use state according to the embodiment of the present invention.

The reference numerals in the drawings denote: 1-injector, 2-flexible tube, 3-puncture needle, 4-enlargement part, 5-filter, 6-holding part, 7-side hole, 8-scale, 9-first restraint part, 10-second restraint part, 11-sticking part, 12-buckle, 13-opening, 14-puncture point.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate that the directions of movement are consistent with those of the drawings, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element needs to have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

The terms "mounted", "connected", "fixed", and the like in the present invention are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.

As mentioned above, when the puncture needle is used for bone puncture, the needle head is easy to bend, and when tumor cells in bone marrow are large, fat is high, and bone dregs exist, the problem of tube blockage is easily caused, which results in collection failure. Therefore, the invention provides a children bone marrow puncture collection needle and a component thereof; the invention will now be further described with reference to the drawings and specific examples.

Referring to fig. 1, a child bone marrow puncture collection needle designed according to the present invention is illustrated, comprising: the puncture needle comprises a syringe 1, a flexible tube 2 and a puncture needle 3, wherein one end of the flexible tube 2 is provided with an enlarged part 4 which is a tubular part with the diameter larger than that of the flexible tube 2 so as to accommodate a filter; the nipple of the syringe 1 is connected to an enlargement portion 4, and the syringe has a size of 10 ml. The existing clinical use generally adopts a 20ml syringe, but the syringe has large force bearing area and reduced suction force, and when the suction force is too small during the bone marrow suction, the bone marrow suction is easy to fail or the bone marrow is easy to agglutinate indirectly. The 10ml syringe has small volume and strong suction force, the generated pressure is safe and applicable in the central venipuncture process, and the bone puncture operation is greatly facilitated.

The flexible pipe 2 is made of PE. The food-grade plastic has the characteristics of strong flexibility and easier operation of the bone marrow obtaining process, and the food grade is safer, so that the detection result of the blood product cannot be influenced by the material factors.

The one end of pjncture needle 3 is pinpoint portion, the other end of flexible pipe 2 is connected with the one end of keeping away from pinpoint portion of pjncture needle 3, pjncture needle 3 is 9 syringe needles, and the crooked phenomenon of syringe needle can not generally take place for it to satisfy older children's bone and wear. And the inner diameter of the 9-gauge needle is larger, which is helpful to prevent the blockage of the tube and also increases the output port of the marrow blood.

The amplifying part 4 is provided with a filter 5, and the filter 5 is a filter screen with the aperture of 25mm-30 mm. By arranging the filter, tumor cells, fat and bone residues in bone marrow can be filtered out, and the passing of the bone marrow is not influenced. The enlargement part is arranged at one end of the flexible tube 2, so that a place is provided for installing a filter for filtering tumor cells, fat and bone residues in bone marrow, and meanwhile, the enlargement part is also used as a connecting part with a syringe nipple, so that the connection between the syringe and the flexible tube is met, and the bone marrow puncture collection needle has the function of filtering bone marrow. In addition, the collecting needle of the present invention can collect a part of bone residues, thereby reducing the bone residues remaining in the bone marrow.

A holding part 6 is fixed on the side wall of the puncture needle 3, a side hole 7 is formed in the position, close to the needle point, on the side wall of the puncture needle 3, and the side hole 7 is located on one side of the inclined plane of the needle point part of the puncture needle.

Further, with continued reference to fig. 1, in other embodiments, the enlargement portion 4 and the nipple of the injector 1 are detachably connected, that is, the nipple is inserted into the enlargement portion 4, so as to facilitate the injector to be removed after the bone marrow collection is completed for further processing of the bone marrow. Due to the integral design of the enlargement part 4 and the flexible tube 2, the enlargement part 4 is also made of flexible material, which is beneficial to forming a sealing connection between the nipple of the syringe 1 and the flexible tube 4 after the nipple is inserted into the enlargement part, and bone marrow leakage during collection is avoided.

Further, in some other embodiments, the amplifying part 4 is detachably connected with the flexible tube 2, specifically, the amplifying part and the flexible tube are detachably connected in a screwing manner, and once impurities filtered by the filter block the tube in the bone marrow obtaining process, the amplifying part can be directly replaced to continue the bone marrow obtaining, so that the interruption of the operation process is avoided.

Further, with continued reference to fig. 1, in some embodiments, the flexible tube 2 is further provided with a scale 8 extending from one end of the flexible tube near the puncture needle to the other end, and the conventional bone marrow collection volume is typically 0.2ml, and therefore, the scale ranges from 0ml to 0.2 ml. In addition, the scale range can be 0ml-1.0ml, and the device can be suitable for being used when more bone marrow needs to be collected under specific conditions; the main function of the scale is to accurately control the bone marrow collection amount. Because the conventional bone marrow is collected in an amount of 0.2-1ml at present for definite diagnosis, and 0.2-0.5ml is generally sufficient for children, the existing scalp needle is long in length and far exceeds 1ml after the bone marrow reaches the estimated measurement of the injector, so that the waste of the bone marrow is caused.

In addition, the length of the flexible pipe 2 is controlled to be between 4.5 cm and 6cm, which is practical, and of course, the length of the flexible pipe can be selected according to actual needs.

Further, with continued reference to fig. 1, in some embodiments, the grip portion 6 is formed by two arcuate rigid members that are symmetrically secured to the needle 3 at an end thereof adjacent the flexible tube. The grip part mainly has the functions of applying acting force to the puncture needle for puncture and pulling out the puncture needle after the collection of bone marrow is completed. Another advantage of using the grip portion 6 to assist the puncture is that the puncture needle itself is not touched, since the portion of the puncture needle needs to enter the skin and bone marrow of the collector, and if there is no grip portion, the puncture needle needs to be held for puncture and extraction, which not only is inconvenient for puncture, but also increases the probability of infection.

Further, with reference to fig. 1, in some embodiments, the number of the side holes 7 is 1, one of the functions of the side holes is to prevent the needle tip from being blocked, so that bone marrow can be collected, for a conventional puncture needle, bone marrow can be sucked only through the hole at the needle tip of the puncture needle, once the blockage occurs, a new puncture needle needs to be used to puncture again after the puncture needle is pulled out, which increases pain of a patient, and the occurrence of the above situation can be prevented to a certain extent by providing the side holes, thereby reducing the probability of blockage. It will be appreciated that other numbers of side holes 7, such as 2, may be provided as required, but not too many, as would otherwise tend to break the needle portion.

Referring to fig. 1 and 2, the invention discloses a children bone marrow puncture assembly, which comprises a children bone marrow puncture collection needle in the above embodiment and a puncture point fixing device, wherein the puncture point fixing device comprises a first restraint part 9, a second restraint part 10 and an adhesion part 11, the first restraint part 9 and the second restraint part 10 are both arc-shaped structures, the two arc-shaped structures form a detachably connected restraint part through a buckle 12, the restraint part is a ring body with an opening 13, the restraint part is an elastic structure, the adhesion part 11 is fixed at both ends of the opening, and the adhesion surface of the adhesion part 11 faces the inner side of the ring body. The puncture point fixing device of the embodiment is very suitable for fixing the puncture points of the spinous process and the posterior superior iliac spine in the lateral decubitus position and the anterior superior iliac spine in the horizontal decubitus position.

Further, referring to fig. 3, in use, the restricting parts are sleeved on the trunk of a patient, the adhering parts 10 are respectively adhered to two sides of the puncture point 14, then the first restricting part and the second restricting part are connected through the buckle 12, and the respective adhering parts are pulled through the restricting parts, so that the skin is pulled to two sides to be tensed, and then the puncture position is selected in the tensed area of the skin, thereby fixing the puncture point. In addition, the left thumb and the index finger are tightened and fix the skin in the puncturing process, the skin is fixed and tightened in four directions by matching with the puncturing point fixing device, particularly, the skin is not easy to shift or slip when the skin punctures periosteum, and the efficiency and the success rate of the operation are greatly facilitated. In addition, through the split design of the restriction component, the tightness degree of the restriction component can be adjusted according to the requirements of the body size of the patient.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A child bone marrow puncture collection needle, comprising:

an injector;

one end of the flexible tube is provided with an amplifying part which is connected with a nipple of the injector, and the amplifying part is provided with a filter;

the puncture needle is provided with a needle tip part, and one end of the puncture needle, which is far away from the needle tip part, is connected with the other end of the flexible tube;

the side hole is arranged on the side wall of the puncture needle and is close to the needle point; and

and a holding part fixed on the side wall of the puncture needle.

2. The children's bone marrow puncture collection needle of claim 1, wherein the filter is a filter screen with a pore size of 25mm to 30 mm.

3. The children's bone marrow puncture collection needle according to claim 1, wherein the enlargement part and the nipple of the injector are detachably connected; preferably, the nipple is inserted into the amplifying part, and the nipple and the amplifying part form a sealing connection on a contact surface;

preferably, the amplifying part is detachably connected with the flexible pipe, and more preferably, the amplifying part is detachably connected with the flexible pipe through a screw connection mode.

4. The children's bone marrow puncture collection needle as claimed in claim 1, wherein the flexible tube is provided with a scale, and the scale extends from one end of the flexible tube close to the puncture needle to the other end; preferably, the scale ranges from 0ml to 0.2ml or from 0ml to 1.0 ml.

5. The children's bone marrow puncture collection needle as claimed in claim 1, wherein the grip portion is formed of two arc-shaped rigid members symmetrically fixed to one end of the puncture needle near the flexible tube.

6. The children's bone marrow puncture collection needle according to any one of claims 1 to 5, wherein the puncture needle is a 9-gauge scalp needle head; alternatively, the syringe is 10ml in size.

7. The children's bone marrow puncture collecting needle according to any one of claims 1 to 5, wherein the number of the side holes is 1 to 2; preferably, the side hole is positioned on one side of the bevel of the needle tip of the puncture needle.

8. The children's bone marrow puncture collection needle according to any one of claims 1 to 5, wherein the flexible tube is made of food grade plastic; preferably any one of PET, PP, PE, etc.

9. A child bone marrow puncture assembly comprising the child bone marrow puncture collection needle according to any one of claims 1 to 8 and a puncture point fixing device, the puncture point fixing device comprising:

a first restraint member;

a second restraint member; the first constraint part and the second constraint part are both arc-shaped structures, the two arc-shaped structures form a constraint part which is detachably connected through a buckle, the constraint part is a ring body with an opening, and the constraint part is of an elastic structure; and

and the two ends of the opening are both fixed with the pasting parts, and the pasting surfaces of the pasting parts face the inner side of the ring body.

10. The bone marrow puncture set for children of claim 9, wherein the first and second restriction components are made of any one of PET, PP and PE.