CN217090847U

CN217090847U - Bone marrow puncture needle

Info

Publication number: CN217090847U
Application number: CN202121468008.2U
Authority: CN
Inventors: 王育苗
Original assignee: Xiamen Xinghuo Shimmering Medical Instrument Manufacturing Co ltd
Current assignee: Xiamen Xinghuo Shimmering Medical Instrument Manufacturing Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-08-02
Anticipated expiration: 2031-06-30

Abstract

The utility model provides a marrow puncture needle, including handle and pjncture needle, be formed with puncture catheter and the installation through-hole that communicates the puncture catheter on the handle, the open end of installation through-hole is provided with the spacing groove of the different degree of depth of multiunit, the first end of pjncture needle forms the syringe needle that is used for the puncture, the second end of pjncture needle is radial outside to be bulged and is had spacing boss, the first end of pjncture needle embolias the puncture catheter through the installation through-hole of handle in, the spacing boss card of the second end of pjncture needle is gone into one of them set of spacing inslot and is realized spacing; the variable extraction amount can be realized under the condition of using the same puncture needle.

Description

Bone marrow puncture needle

Technical Field

The utility model relates to the field of medical equipment, concretely relates to marrow pjncture needle.

Background

When a patient needs a bone marrow puncture operation for a certain disease, a doctor can puncture by using a bone marrow puncture needle. Currently, after puncturing, doctors extract certain tissues (such as bone marrow) by drawing a certain distance outwards, which is related to the health of patients, and the amount of the extraction needs to be strictly controlled, so that the amount of the extraction is enough and the extraction is not more as much as possible.

In the prior art, puncture needles with different types (such as different lengths) are selected to be matched to correspondingly extract different quantities, so that the number of parts is large; if the amount to be extracted is changed in the operation process, such as the actual need of more extraction amount, the puncture needle inserted originally needs to be pulled out and replaced by another puncture needle, so the operation time is prolonged, the pain of the patient is increased, and the wound is exposed for a longer time, and the infection risk is increased.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a marrow puncture needle, can realize under the condition of using same pjncture needle that the extraction volume is variable.

In order to achieve the above purpose, the utility model provides a technical scheme as follows:

the utility model provides a marrow pjncture needle, includes handle and pjncture needle, be formed with puncture catheter and intercommunication on the handle the installation through-hole of puncture catheter, the open end of installation through-hole is provided with the spacing groove of the different degree of depth of multiunit, the first end of pjncture needle forms the syringe needle that is used for the puncture, the second end of pjncture needle radially outwards is protruding to have spacing boss, the first end of pjncture needle embolias in the puncture catheter through the installation through-hole of handle, the spacing boss card of the second end of pjncture needle is gone into one of them a set of spacing inslot and is realized spacingly.

Furthermore, two limiting bosses are arranged at the second end of the puncture needle, and the two limiting bosses are distributed in an opposite way; the number of each group of limiting grooves at the opening end of the mounting through hole is two, and the two limiting grooves in the same group are arranged oppositely; the two limit bosses are respectively clamped in the two limit grooves of the same group.

Furthermore, three sets of limiting grooves are formed and are uniformly distributed in the circumferential direction.

Furthermore, a handheld seat with the diameter larger than that of the installation through hole is formed at the end part of the second end of the puncture needle, and the handheld seat is exposed out of the handle.

Furthermore, the periphery of the handheld seat is raised at intervals with anti-skid convex ribs.

Furthermore, the puncture needle further comprises a limiting block, wherein the limiting block is assembled on the handle and can move along the axial direction of the puncture catheter.

Further, the stop block has an abutment surface facing the outer end of the puncture catheter.

Furthermore, an adhesive layer is attached to the abutting surface of the limiting block.

Furthermore, the limiting block is provided with a central hole and is sleeved on the handle.

Furthermore, an external thread is formed on the handle, an internal thread is formed on the inner wall of the central hole of the limiting block, and the limiting block is fixed with the external thread on the handle in a threaded connection mode through the internal thread.

Through the utility model provides a technical scheme has following beneficial effect:

the puncture needle is clamped into the limit grooves with different depths through the limit bosses on the puncture needle, and when a small amount of bone marrow needs to be extracted, the puncture needle can be clamped into the limit grooves with deeper depths. When a larger amount of bone marrow needs to be extracted, the bone marrow can be clamped into the limiting groove with a shallower depth. The variable extraction amount can be realized under the condition of using the same puncture needle; effectively eradicate the defects of the prior art, and has simple structure and simple and easy operation.

Drawings

FIG. 1 is a perspective view of a bone marrow puncture needle according to an embodiment;

FIG. 2 is a perspective view of the bone marrow puncture needle at another angle in the embodiment;

FIG. 3 is an exploded view of a bone marrow puncture needle according to an embodiment;

FIG. 4 is a top view of the handle of the embodiment;

FIG. 5 is a top view of the bone marrow puncture needle in the embodiment;

FIG. 6 is a partial cross-sectional view of the structure taken along line A-A of FIG. 5;

fig. 7 is a partial sectional view of the structure taken along line B-B in fig. 5, with the needle moved outwardly a distance.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. The components in the drawings are not necessarily to scale, and similar reference numerals are generally used to identify similar components.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 7, the present embodiment provides a bone marrow puncture needle, including a handle 10, a puncture needle 20 and a limiting block 30, wherein a puncture catheter 11 and an installation through hole 12 communicating with the puncture catheter 11 are formed on the handle 10, and an opening end of the installation through hole 12 is provided with a plurality of sets of limiting grooves 140 with different depths, specifically, in the present embodiment, there are three sets, and the number of each set of limiting grooves 140 is two, and the two sets are arranged oppositely; as shown in fig. 4, a first set of two first limiting grooves 141, a second set of two second limiting grooves 142 and a third set of two third limiting grooves 143. The three sets of limiting grooves 140 are uniformly distributed in the circumferential direction and are distributed at 60 degrees. The depth of the first limiting groove 141 is greater than that of the second limiting groove 142, and the depth of the second limiting groove 142 is greater than that of the third limiting groove 143.

The first end of the puncture needle 20 forms a needle head 21 for puncture, the second end of the puncture needle 20 is provided with two limiting bosses 24 protruding outwards in the radial direction, and the two limiting bosses 24 are distributed in a back-to-back manner. The first end of the puncture needle 20 is sleeved in the puncture catheter 11 through the installation through hole 12 of the handle 10, and the limit boss 24 at the second end of the puncture needle 20 is clamped in one of the limit grooves 140 to realize the limit. Specifically, the two limiting bosses 24 are respectively clamped into the two limiting grooves 140 of the same group, and if the two limiting bosses 24 are respectively clamped into the two first limiting grooves 141 of the first group, the structure is more stable.

When a small amount of bone marrow needs to be extracted, the limiting boss 24 may be inserted into the limiting groove 140 (e.g., the first limiting groove 141) having a deeper depth. When a larger amount of bone marrow is required to be extracted, the limiting boss 24 may be engaged in a limiting groove 140 (e.g., the second limiting groove 142 or the third limiting groove 143) having a shallower depth. The variable extraction amount can be realized under the condition that the same puncture needle 20 is used; effectively eradicate the defects of the prior art, and has simple structure and simple and easy operation.

Of course, in other embodiments, the number of sets of the limiting grooves 140 is not limited to three, and may be two sets, four sets, etc.; the number of the limiting grooves 140 in each group can be one or three, and the number of the limiting bosses 24 is changed accordingly.

Specifically, a handheld seat 22 with a diameter larger than that of the mounting through hole 12 is further formed at the second end of the puncture needle 20, and the handheld seat 22 is exposed outside the handle, so that an operator can conveniently hold the handheld seat 22 to realize the puncture operation of the puncture needle 20. Preferably, anti-skidding convex ribs 23 are protruded on the periphery of the handheld base 22 at intervals, so that the friction is increased, hands are prevented from slipping, and medical accidents are avoided. Of course, the structure of the needle 20 is not limited thereto in other embodiments.

The stopper 30 is fitted to the handle 10 and is movable in the axial direction of the puncture catheter 11. After the puncture needle 20 punctures in place, the limiting block 30 can be moved, so that the limiting block 30 is abutted to the skin, the bone marrow puncture needle is fixed, the bone marrow puncture needle can be well prevented from shaking, and the operation risk is reduced. And the structure is simple, and the operation is simple and convenient.

Meanwhile, the bone marrow puncture needle has another function, namely when the insertion depth required to be inserted can be known in advance, the position of the limiting block 30 can be adjusted in advance, then the puncture is carried out until the limiting block 30 is pressed against the skin, the one-step puncture is realized, and the precision is better.

Specifically, in this embodiment, the limiting block 30 has an abutting surface 31 facing the outer end of the puncture catheter, and the abutting surface 31 abuts against the skin, so as to fix the position, stabilize the support, and achieve uniform stress. More specifically, an adhesive layer (specifically, a double-sided adhesive tape, not shown) is further attached to the abutting surface 31, and when the abutting surface 31 abuts against the skin, the skin can be adhered by the adhesive layer, so that further fixation is achieved, and the effect is better. Of course, in other embodiments, the structure of the adhesive layer may not be used, or the stopper 30 may be abutted against the skin by other methods. Fixed positioning may also be achieved, but may be less effective.

The limiting block 30 is provided with a central hole 301 and is sleeved on the handle 10; this arrangement also allows the central aperture 301 to be centred on the abutment surface 31, thus allowing for uniform support and better results. Simultaneously, it is specific again, stopper 30 is through the mode assembly of spiro union on the handle, and concrete structure is: the handle 10 is formed with an external thread 13, and the inner wall of the central hole 301 of the stopper 30 is formed with an internal thread (not shown) and is screwed with the external thread 13 on the handle 10 through the internal thread. The assembly is carried out by adopting a threaded connection mode, the position of the limiting block 30 can be continuously adjusted by rotating the limiting block 30, the assembly structure is simple, and the adjustment is more convenient and accurate. Of course, in other embodiments, the assembly structure of the limiting block 30 is not limited to this, and may also be implemented by sliding fit of the sliding block and the sliding groove, and when the fixing position is required, the fixing may be performed by elastic clamping, and the like.

The aperture of the installation through hole 12 is larger than that of the puncture catheter 11, so that the insertion is convenient. Of course, the diameter of the mounting through hole 12 and the diameter of the puncture catheter 11 may be equal.

While the invention has been particularly 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 spirit and scope of the invention as defined by the appended claims.

Claims

1. A bone marrow puncture needle, which is characterized in that: including handle and pjncture needle, be formed with puncture catheter and intercommunication on the handle the installation through-hole of puncture catheter, the open end of installation through-hole is provided with the spacing groove of the different degree of depth of multiunit, the first end of pjncture needle forms the syringe needle that is used for the puncture, the second end of pjncture needle radially outwards protrudes there is spacing boss, the first end of pjncture needle embolias in the puncture catheter through the installation through-hole of handle, the spacing boss card of the second end of pjncture needle is gone into one of them a set of spacing inslot and is realized spacingly.

2. A bone marrow puncture needle according to claim 1, characterized in that: two limiting bosses are arranged at the second end of the puncture needle, and are distributed in an opposite way; the number of each group of limiting grooves at the opening end of the mounting through hole is two, and the two limiting grooves in the same group are arranged oppositely; the two limit bosses are respectively clamped in the two limit grooves of the same group.

3. A bone marrow puncture needle according to claim 2, characterized in that: three sets of limiting grooves are arranged and are uniformly distributed in the circumferential direction.

4. A bone marrow puncture needle according to claim 1, characterized in that: and a handheld seat with the diameter larger than that of the mounting through hole is formed at the end part of the second end of the puncture needle, and the handheld seat is exposed out of the handle.

5. A bone marrow puncture needle according to claim 4, characterized in that: the periphery of the handheld seat is raised at intervals with anti-skid convex ribs.

6. A bone marrow puncture needle according to claim 1, characterized in that: the puncture catheter is characterized by further comprising a limiting block, wherein the limiting block is assembled on the handle and can move along the axial direction of the puncture catheter.

7. The bone marrow puncture needle according to claim 6, characterized in that: the stop block has an abutment surface facing the outer end of the puncture catheter.

8. A bone marrow puncture needle according to claim 7, characterized in that: the abutting surface of the limiting block is further attached with an adhesive layer.

9. A bone marrow puncture needle according to claim 6, 7 or 8, characterized in that: the limiting block is provided with a central hole and is sleeved on the handle.

10. A bone marrow puncture needle according to claim 9, characterized in that: the handle is provided with external threads, the inner wall of the central hole of the limiting block is provided with internal threads, and the limiting block and the external threads on the handle are screwed and fixed through the internal threads.