CN218899526U

CN218899526U - Bone marrow puncture biopsy integrated needle

Info

Publication number: CN218899526U
Application number: CN202221838223.1U
Authority: CN
Inventors: 周芙玲; 沈辉; 黄婷婷; 梁雨星
Original assignee: Zhongnan Hospital of Wuhan University
Current assignee: Zhongnan Hospital of Wuhan University
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2023-04-25
Anticipated expiration: 2032-07-15

Abstract

The bone marrow puncture biopsy integrated needle comprises an outer sleeve needle, a puncture needle and a biopsy needle, wherein the front end of the outer sleeve needle is a crescent sharp port, and a plurality of through liquid suction holes are formed in the outer wall of the front end of the outer sleeve needle; the puncture needle and the biopsy needle can be nested in the outer sleeve needle and extend out of the front end of the outer sleeve needle, the tail ends of the puncture needle and the biopsy needle can be detachably connected with the tail end of the outer sleeve needle, the front end of the biopsy needle is provided with a hollow needle core, and the outer wall of the hollow needle core is provided with a plurality of sampling grooves penetrating through the front end of the hollow needle core at equal intervals along the length direction of the hollow needle core. The utility model can ensure the collection amount of the bone marrow puncture specimen to the greatest extent, simplify the operation process, save time and labor, relieve the pain of patients, reduce the risk of infection possibly occurring in the biopsy process, effectively shorten the time, and simultaneously ensure the length and the quality of the bone marrow biopsy specimen and the integrity of bone marrow when taking down the biopsy specimen.

Description

Bone marrow puncture biopsy integrated needle

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a bone marrow aspiration biopsy integrated needle.

Background

Currently, the diagnosis of hematological disorders depends largely on laboratory detection means. Bone marrow puncture examination is used for obtaining a bone marrow smear sample and performing MICM typing diagnosis of blood system diseases, and bone marrow smear is one of the most common detection means for detecting blood diseases, but when bone marrow is "dry-pumped", especially when a large number of patients suffering from blood tumor cell stasis and primary or secondary bone marrow fibrosis are involved, the bone marrow puncture operation often cannot obtain enough sample amount, and inconvenience is brought to related examination of follow-up flow, genes, genetics and the like.

Bone marrow biopsy, i.e., bone marrow biopsy, is a pathological examination of a small piece of cylindrical bone marrow tissue, approximately 1.5-3 cm long, taken with a specially-made trocar. The operation method is different from bone marrow puncture, and a section of complete bone marrow sample containing cortical bone and medulla is taken out according to the shearing force of the fixing direction, so that the complete bone marrow tissue structure is reserved.

The operation standardization flow of the bone marrow puncture operation and the bone marrow biopsy operation at the present stage is carried out separately, firstly bone marrow puncture and extraction of bone marrow samples are carried out for bone marrow smear detection and subsequent sample preservation, and then bone marrow biopsy operation is carried out at an adjacent site to obtain a bone marrow living tissue sample. Bone marrow puncture needles are solid trocars, and bone marrow biopsy needles are mostly clamping groove nut trocars.

When in bone marrow biopsy, the needle core is required to be pulled out, the clamping groove nut is sleeved, the needle core is inserted into the needle core, the sleeve is hollow, at the moment, the needle core rotates downwards by 1-1.5 cm according to the fixed direction, and then the puncture needle is pulled out in the same direction. The needle core is pulled out, the clamping groove nut is taken down, the thimble is inserted, and the specimen is carefully pushed into formalin fixed liquid to be stored and inspected. The method is a bone marrow biopsy sampling method which is mainly used clinically at present, is time-consuming and labor-consuming, and can aggravate the pain of patients and increase the risk of infection by a long-time operation method in the sampling process.

Bone marrow aspiration and bone marrow biopsy are indispensable in the diagnosis of the existing blood system diseases, when a patient performs two examinations, the system and the function of the bone marrow aspiration bag and the bone marrow biopsy bag are different, the economic burden of the patient can be increased by using the bone marrow aspiration bag and the bone marrow biopsy bag simultaneously, two invasive operations can be caused by the bone marrow aspiration operation and the bone marrow biopsy operation, the operations are often local infiltration anesthesia, the discomfort of the patient can be increased, and the infection risk is also increased easily.

Disclosure of Invention

In order to solve the problems, the utility model provides a bone marrow aspiration biopsy integrated needle, which comprises the following specific technical scheme:

the bone marrow puncture biopsy integrated needle comprises an outer sleeve needle, a puncture needle and a biopsy needle, wherein the front end of the outer sleeve needle is a crescent sharp port, and a plurality of through liquid suction holes are formed in the outer wall of the front end of the outer sleeve needle; the puncture needle and the biopsy needle can be nested in the outer sleeve needle and extend out of the front end of the outer sleeve needle, the tail ends of the puncture needle and the biopsy needle can be detachably connected with the tail end of the outer sleeve needle, the front end of the biopsy needle is provided with a hollow needle core, and the outer wall of the hollow needle core is provided with a plurality of sampling grooves penetrating through the front end of the hollow needle core at equal intervals along the length direction of the hollow needle core.

Further, the sampling groove is matched with a sampling through strip with a flaky front part, and the width of the sampling through strip is matched with that of the sampling groove.

Further, the length of the biopsy needle extending out of the front end of the outer sleeve needle is 2-3 cm.

Further, the tail end of the outer sleeve needle is provided with a handle, and the outer sleeve needle penetrates through the center of the handle.

Further, the outer end face of the handle is provided with mounting grooves along the circumference of the outer sleeve needle, and the inner side walls of the mounting grooves are symmetrically provided with alignment grooves.

Further, the tail ends of the puncture needle and the biopsy needle are respectively provided with a pushing handle which can be attached to the handle, the inner end surface of the pushing handle is provided with an installation cylinder which is matched with the installation groove and can enable the outer sleeve to be sleeved in, and the outer side surface of the installation cylinder is symmetrically provided with an alignment pin which can be embedded into the alignment groove.

Further, the end face of the handle close to the outer sleeve needle is symmetrically provided with an arc-shaped inner groove.

The beneficial effects are that:

the utility model can ensure the collection amount of the bone marrow puncture specimen to the greatest extent, simplify the operation process, save time and labor, relieve the pain of patients, reduce the risk of infection possibly occurring in the biopsy process, effectively shorten the time, and simultaneously ensure the length and the quality of the bone marrow biopsy specimen and the integrity of bone marrow when taking down the biopsy specimen.

Drawings

FIG. 1 is a schematic view of the insertion of the lancet of the present utility model into a outer sleeve needle.

Fig. 2 is a schematic cross-sectional view of a trocar of the present utility model.

FIG. 3 is a partial schematic view of the wicking aperture of the outer needle of the present utility model.

FIG. 4 is a schematic view in partial cross-section of a biopsy needle strip of the present utility model.

FIG. 5 is a top view of a cross section of a sampling trench of the present utility model.

FIG. 6 is a schematic diagram of a sample through strip according to the present utility model.

In the figure: 1 outer sleeve needle, 11 imbibition hole, 2 puncture needle, 3 biopsy needle, 31 hollow needle core, 32 sampling groove, 4 sampling tube, 5 handle, 51 mounting groove, 52 alignment groove, 53 inner groove, 6 pushing handle, 61 mounting cylinder, 62 alignment pin.

Detailed Description

The utility model is further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 5, the bone marrow aspiration biopsy integrated needle comprises an outer sleeve needle 1, a puncture needle 2 and a biopsy needle 3, wherein the front end of the outer sleeve needle 1 is a crescent sharp port, and the outer wall of the front end of the outer sleeve needle is provided with a plurality of through liquid suction holes 11; the puncture needle 2 and the biopsy needle 3 can be nested in the outer sleeve needle 1 and extend out of the front end of the outer sleeve needle 1, the tail ends of the puncture needle 2 and the biopsy needle 3 can be detachably connected with the tail end of the outer sleeve needle 1, the front end of the biopsy needle 3 is provided with a hollow needle core 31, and the outer wall of the hollow needle core 31 is provided with a plurality of sampling grooves 32 penetrating through the front end of the hollow needle core 31 at equal intervals along the length direction of the hollow needle core.

Specifically, the front end of the puncture needle 2 is a sharp point, so that bone marrow puncture can be performed to break through the outer cortical bone and enter the bone marrow cavity.

The liquid suction holes 11 uniformly formed on the outer sleeve needle 1 are beneficial to the bone marrow liquid to enter the outer sleeve needle 1 from all directions and be extracted, and the bone marrow liquid sample of a patient with bone marrow dry extraction or cell stasis can be collected, so that the damage to bone marrow quality in the secondary needle insertion direction can be avoided to the greatest extent.

As shown in fig. 4, the length of the biopsy needle 3 extending out of the front end of the outer sleeve needle 1 is 2-3 cm; after the puncture needle 2 is withdrawn, the needle is inserted into the outer sleeve needle 1 according to a fixed direction, the biopsy needle 3 is used for extruding bone marrow liquid or clot possibly remained at the front end of the outer sleeve needle 1, and the bone marrow liquid or clot is removed along the gap of the sampling groove 32 and the outer sleeve tube, so that the biopsy sample can be cut off by utilizing the rotary shearing force in favor of the entry of the biopsy sample into the hollow needle core 31.

Preferably, the length of the hollow needle core 31 is 50mm, and the length of the sampling groove 32 is 45mm.

As shown in fig. 5, preferably, the hollow core 31 is welded to the biopsy needle 3, the sampling groove 32 is provided with three sampling grooves, and the included angles formed by the two side edges of the sampling groove and the center of the hollow core 31 are 25 °.

As shown in fig. 6, in order to facilitate taking out the biopsy sample in the sampling slot 32, the sampling slot 32 is equipped with a sampling strip 4 for sampling, and the front part of the sampling strip 4 is in a sheet shape, and the width of the front part is matched with that of the sampling slot 32, so that the biopsy tissue can be pushed out from the front end along the tail end of the sampling slot 32; because the hollow needle core 31 is of a multi-petal hollow design, the hollow end of the hollow needle core has a certain expansibility, so that a biopsy sample is conveniently taken out, and the front end clamping caused by hard bone cortex is avoided.

As shown in fig. 1, 2 and 4, the tail end of the outer sleeve needle 1 is provided with a handle 5, and the outer sleeve needle 1 penetrates through the center of the handle 5.

In one embodiment, the outer end surface of the grip 5 is provided with a mounting groove 51 along the circumference of the outer sleeve needle 1, and the inner side wall of the mounting groove 51 is symmetrically provided with an alignment groove 52.

The tail ends of the puncture needle 2 and the biopsy needle 3 are respectively provided with a pushing handle 6 which can be attached to the handle 5, the inner end surface of the pushing handle 6 is provided with an installation cylinder 61 which is matched with the installation groove 51 and can be sleeved with the outer sleeve, and the outer side surface of the installation cylinder 61 is symmetrically provided with an alignment pin 62 which can be embedded into the alignment groove 52.

The alignment pin 62 may be made of a material having a certain elasticity, and may be inserted into the alignment groove 52 or removed from the alignment groove 52 with a certain force. Or an L-shaped groove communicated with the alignment groove 52 is formed in the mounting groove 51, and the alignment pin 62 rotates after being inserted into the L-shaped groove, so that the alignment pin 62 is embedded into the alignment groove 52, and the push handle 6 and the grip 5 are matched, folded and attached to be connected at the moment; the alignment pin 62 is removed from the L-shaped slot after reverse rotation.

Preferably, the end surface of the handle 5 close to the outer sleeve needle 1 is symmetrically provided with an arc-shaped inner groove 53, so that the holding needle penetration is facilitated.

When in use, the puncture needle 2 is inserted into the outer sleeve needle 1, the push handle 6 is attached to the handle 5, the puncture needle 2 is used for bone marrow puncture, the puncture needle 2 breaks through the outer cortex bone to enter the bone marrow cavity, and the puncture needle 2 is withdrawn; connecting the tail end of the outer sleeve needle 1 by using a syringe or other suction devices, and sucking bone marrow fluid from the liquid suction holes 11 in all directions of the outer sleeve needle 1 by using negative pressure; when bone marrow biopsy is performed, the biopsy needle 3 is inserted into the outer sleeve needle 1, the needle is slowly inserted for 2-3 cm, the hollow needle core 31 of the biopsy needle 3 is used for collecting a biopsy sample, the biopsy sample is cut off by using a rotary shearing force, then the needle is slowly withdrawn, the biopsy sample tissue is pushed out from the front end along the tail end of the sampling groove 32 by using the sampling through strip 4, and then a specimen is put into formalin solution for storage and inspection.

Claims

1. A bone marrow aspiration biopsy integrated needle, which is characterized in that: the surgical needle comprises a coat needle, a puncture needle and a biopsy needle, wherein the front end of the coat needle is a crescent sharp port, and a plurality of through liquid suction holes are formed in the outer wall of the front end of the coat needle; the puncture needle and the biopsy needle can be nested in the outer sleeve needle and extend out of the front end of the outer sleeve needle, the tail ends of the puncture needle and the biopsy needle can be detachably connected with the tail end of the outer sleeve needle, the front end of the biopsy needle is provided with a hollow needle core, and the outer wall of the hollow needle core is provided with a plurality of sampling grooves penetrating through the front end of the hollow needle core at equal intervals along the length direction of the hollow needle core.

2. A bone marrow aspiration biopsy integrated needle according to claim 1, wherein: the sampling groove is matched with a sampling through strip with a flaky front part, and the width of the sampling through strip is matched with that of the sampling groove.

3. A bone marrow aspiration biopsy integrated needle according to claim 1, wherein: the length of the biopsy needle extending out of the front end of the outer sleeve needle is 2-3 cm.

4. A bone marrow aspiration biopsy integrated needle according to claim 1, wherein: the tail end of the outer sleeve needle is provided with a handle, and the outer sleeve needle penetrates through the center of the handle.

5. A bone marrow aspiration biopsy integrated needle according to claim 4, wherein: the outer end face of the handle is provided with mounting grooves along the circumference of the outer sleeve needle, and the inner side walls of the mounting grooves are symmetrically provided with alignment grooves.

6. A bone marrow aspiration biopsy integrated needle according to claim 5, wherein: the tail ends of the puncture needle and the biopsy needle are respectively provided with a pushing handle which can be attached to the handle, the inner end surface of the pushing handle is provided with an installation cylinder which is matched with the installation groove and can be sleeved with the outer sleeve, and the outer side surface of the installation cylinder is symmetrically provided with an alignment pin which can be embedded into the alignment groove.

7. A bone marrow aspiration biopsy integrated needle according to claim 4, wherein: the end face of the handle close to the outer sleeve needle is symmetrically provided with an arc-shaped inner groove.