CN215079391U

CN215079391U - Bone marrow puncture device

Info

Publication number: CN215079391U
Application number: CN202120386641.0U
Authority: CN
Inventors: 李建娜; 刘豫; 周广东
Original assignee: Shanghai Soft Heart Biotechnology Co ltd
Current assignee: Shanghai Soft Heart Biotechnology Co ltd; Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-12-10
Anticipated expiration: 2031-02-19

Abstract

The utility model discloses a marrow piercing depth, include: the puncture needle comprises a puncture part, a pintle, an adjusting part and a handle part; the tail end of the puncture part is connected with the pintle, the tail end of the pintle is connected with the first end of the adjusting part, and the second end of the adjusting part is connected with the handle part; the puncture part is provided with a plurality of suction holes; the needle core is detachably inserted into the puncture needle and is controlled and fixed by the adjusting part. According to the bone marrow puncture device, the pressure difference radiation range is wider, the inflow of bone marrow is smoother, and the pumping speed is improved; and the pintle is conical with the department of being connected at puncture portion tail end, and the toper increase part closely laminates with skin, blocks in the skin entry, prevents that the air from getting into.

Description

Bone marrow puncture device

Technical Field

The application relates to the field of medical equipment, in particular to a marrow puncture device.

Background

Bone marrow aspiration is one of the important tests for hematological diseases. Bone marrow is a major organ of hematopoiesis, and the production conditions of various cells in the bone marrow, the changes of the forms and components of various cells, abnormal cells and the like can be known through bone marrow puncture cytology examination, so that the diagnosis is clear, the curative effect is observed, and the prognosis is evaluated. In clinical work, certain diseases can be diagnosed positively or clinical diagnosis is supported by combining bone marrow image, hemogram and clinical data, such as various leukemia, multiple myeloma and metabolic diseases.

The most major steps of bone marrow aspiration include aspiration and aspiration of bone marrow fluid. A conventional puncture device includes a bone marrow puncture needle and a needle core detachably inserted into the puncture needle. In the puncture step, an operator holds the puncture needle by hand, and punctures the bone surface in a vertical direction or at an angle of 30-45 degrees with the bone surface according to different puncture positions, when the sudden puncture resistance disappears, namely the sudden empty feeling exists and the puncture needle is fixed in the bone, the puncture needle enters the bone marrow cavity, and then the bone marrow liquid suction step is carried out, the needle core of the puncture needle is pulled out, the injector is connected, the slow suction is carried out with proper force, and a small amount of red bone marrow liquid enters the injector; and after the marrow fluid is pumped, the subsequent tabletting step is further carried out.

The problems of excessively slow aspiration or low aspiration of bone marrow often occur during aspiration of bone marrow using conventional puncture needles. This is because when the needle penetrates cancellous bone and withdraws from the nook closing member and begin to aspirate, suction produces the pressure differential, radiates from the syringe needle all around, and the marrow needs follow the pressure differential from the hole of cancellous bone UNICOM, the clearance of needle outer wall and cancellous bone etc. to move along the syringe needle direction, along with the increase of the distance with the syringe needle, this kind of pressure differential attenuates gradually, and the distance that the suction hole that the marrow in a distance removed to the syringe needle will pass is very long moreover. Sometimes the needle is inserted near the cortical bone, causing a substantial reduction in the range of cancellous bone over which the pressure differential can radiate. The reason is that the bone marrow is often difficult to extract, and the expected suction amount is not easy to achieve; while increasing pressure or time may also cause damage to bone marrow cells; furthermore, during the extraction process, air is often introduced into the syringe, resulting in insufficient pressure for the suction.

Disclosure of Invention

An object of the application is to provide a bone marrow puncture device, solve above-mentioned technical problem.

The application discloses marrow piercing depth includes:

-a puncture needle, said puncture needle comprising: a puncture part, a pintle, an adjusting part and a handle part; the tail end of the puncture part is connected with the pintle, the tail end of the pintle is connected with the first end of the adjusting part, and the second end of the adjusting part is connected with the handle part;

the puncture part is provided with a plurality of suction holes;

a needle core which is detachably inserted into the puncture needle and is controlled and fixed by the adjusting part.

In a preferred embodiment, the pintle is tapered at the connection with the piercing section.

In a preferred embodiment, the puncturing part is provided with m suction holes, wherein m is more than or equal to 4 and less than or equal to 8.

In a preferred example, the diameter of the suction hole in the puncturing part is d, wherein d is not less than 0.2mm and not more than 2 mm.

In a preferred embodiment, the length of the puncturing part is 4-10 cm.

In a preferred embodiment, the adjusting part is a spiral structure, and the adjusting part adjusts the extractable or fixed state of the stylet according to screwing or unscrewing.

The bone marrow puncture device according to the present application has at least the following advantageous effects:

1. the puncture part is provided with a plurality of suction holes, so that the differential pressure radiation range is wider, the inflow of the marrow is smoother, and the suction speed is improved;

2. the pintle is conical at the joint of the tail end of the puncture part, and the conical enlarged part is tightly attached to the skin and clamped at the skin inlet to prevent air from entering.

Drawings

Fig. 1 is a schematic view of a bone marrow puncture device according to the present application.

Description of reference numerals:

101-puncture part

1011-suction hole

102-pintle

1021-taper

1022-barrier surface

103-regulating part

104-handle

Detailed Description

In the following description, numerous technical details are set forth in order to provide a better understanding of the present application. However, it will be understood by those skilled in the art that the technical solutions claimed in the present application may be implemented without these technical details and with various changes and modifications based on the following embodiments.

As shown in FIG. 1, the bone marrow puncture device according to the present invention includes a puncture needle and a needle core (not shown in the drawings). The puncture needle further includes a puncture portion 101, a pintle 102, an adjustment portion 103, and a handle portion 104. The puncturing part 101 is a tubular structure having a hollow, and the needle has a sharp bevel for puncturing. The wall of the puncture portion has a plurality of circular suction holes 1011 uniformly distributed in the circumferential direction and the longitudinal direction of the wall. Optionally, the number of the suction holes is 4-8, and the aperture of the suction holes is 0.2-2 mm. The length of the puncturing part 101 is 4-10 cm.

The rear end of the puncture part 101 is connected to a pintle 102. the pintle 102 has a conical structure 1021 at the connection with the puncture part 101 and a disc-shaped stop surface 1022 near the conical structure. Stop surface 1022 is generally the trailing end of pintle 102 and is connected to the first end of adjustment member 103. Optionally, the adjusting part 103 is a screw structure for adjusting the extractable or fixed state of the stylet according to screwing or unscrewing. Optionally, the second end of the adjustment portion 103 is connected to the handle portion 104, and the handle portion 104 has an arc shape suitable for being held by the hand of the operator.

Selecting a puncture site:

1. a sternum handle; the advantages are that: the bone marrow is abundant, and the broacher puncture can be performed when the ilium puncture fails; but has certain dangers;

2. superior iliac spine; the part 1-2cm above the back of the anterior superior iliac spine is often taken as a puncture point, and the operation is convenient and safe at the part, and the patient is required to lie on the back;

3. posterior superior iliac spine; the most commonly selected position is the protrusion of the bone above the buttocks on both sides of the sacral vertebrae, and the patient is required to take the prone position or the lateral position.

In order to better understand the technical solution of the present application, the following description is given with reference to specific examples, wherein the listed details are mainly for understanding and are not intended to limit the scope of the present application.

Example 1

The posterior superior iliac spine was selected as the puncture site. The operator checks whether the sterile bone marrow puncture package is within the effective date range and observes whether the operation related articles are completely prepared. Skin was routinely sterilized with an iodophor cotton swab, three times around the puncture point, 15cm in diameter. The sterile bag is opened and sterile gloves are worn. Paving a disinfection hole towel at the part to be punctured;

the anesthetic drug is again checked and 2-3ml is withdrawn for use.

Checking whether the bone marrow puncture needle is intact, and fixing the bone marrow puncture needle fixer on a proper length, wherein the length is generally adjusted according to the thickness of subcutaneous fat of a patient. The bone marrow puncture device selected in the embodiment has a puncture part with a length of 8cm, 6 suction holes and a hole diameter of 1 mm.

Local infiltration anesthesia is carried out by using 2% lidocaine until periosteum, and withdrawal is taken to ensure that blood returns do not exist so as to avoid injecting into blood vessels; and then the sterile gauze is used for kneading the anesthesia part for more than ten seconds.

The left thumb and the index finger of an operator fix a puncture part, the bone marrow puncture device is held by the right hand to be punctured in a straight rotating way, the puncture device is kept to be vertical to the bone surface, and when the puncture needle contacts the bone surface, the puncture needle enters along the long shaft of the needle body in a left-right rotating way. When the sudden puncture resistance disappears, namely the sudden empty feeling exists and the puncture needle is fixed in the bone, the puncture needle enters the marrow cavity. The puncture part is kept fixed in the bone at a depth of 0.5-1 cm. The tapered enlarged part of the pintle is tightly attached to the skin and clamped at the skin inlet to prevent air from entering.

Withdrawing the pintle by 1cm by using a dry 20ml syringe, pulling out the needle core, connecting the syringe, slowly pumping by using proper force, so that a small amount of red bone marrow fluid enters the syringe, and the pumping speed of the bone marrow fluid is kept stable along with the increase of the pumping amount until the pumping amount reaches 0.1-0.2 ml.

Taking down the injector, pushing the marrow liquid on the glass slide, quickly making 5-6 smears, and checking the cytomorphology and cytochemical staining.

It is noted that, in the present patent application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element. In the present patent application, if it is mentioned that a certain action is executed according to a certain element, it means that the action is executed according to at least the element, and two cases are included: performing the action based only on the element, and performing the action based on the element and other elements. The expression of a plurality of, a plurality of and the like includes 2, 2 and more than 2, more than 2 and more than 2.

This specification includes combinations of the various embodiments described herein. Separate references to "one embodiment" or a particular embodiment, etc., do not necessarily refer to the same embodiment; however, these embodiments are not mutually exclusive, unless indicated as mutually exclusive or as would be apparent to one of ordinary skill in the art. It should be noted that the term "or" is used in this specification in a non-exclusive sense unless the context clearly dictates otherwise.

All documents mentioned in this application are to be considered as being incorporated in their entirety into the disclosure of this application so as to be subject to modification as necessary. Further, it is understood that various changes or modifications may be made to the present application by those skilled in the art after reading the above disclosure of the present application, and such equivalents are also within the scope of the present application as claimed.

Claims

1. A bone marrow puncture device, comprising:

the puncture part is provided with a plurality of suction holes;

2. The bone marrow puncture device according to claim 1, wherein the pintle is tapered at a junction with the puncture portion.

3. The bone marrow puncture device according to claim 1, wherein the puncture part has m suction holes, wherein m is 4. ltoreq. m.ltoreq.8.

4. The bone marrow puncture device according to claim 1, wherein the diameter of the suction hole in the puncture section is d, wherein d is 0.2mm or more and 2mm or less.

5. The bone marrow puncture device according to claim 1, wherein the puncture portion has a length of 4-10 cm.

6. The bone marrow puncture device as set forth in claim 1, wherein the adjustment part has a screw structure for adjusting the extractable or fixed state of the needle core according to unscrewing or screwing.