CN212521955U

CN212521955U - Novel puncture needle

Info

Publication number: CN212521955U
Application number: CN202021998787.2U
Authority: CN
Inventors: 刘晓强; 王尚任; 李松
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-02-12
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a novel puncture needle, which comprises a body and a puncture needle component which penetrates out of the body, wherein the puncture needle component comprises a needle core and a needle sleeve, the rear part of the body is provided with a pulling bolt which drives the puncture needle component to stretch, the front part of the body is provided with a baffle plate, a bracket is fixed on the baffle plate, and the front end of the bracket is provided with a fixed sleeve; a sample nest is movably mounted on the support, a plurality of through pore channels are formed in the sample nest and are used as sample bins, and adjacent sample bins are communicated with each other; the pricking pin assembly sequentially passes through the baffle, the specimen bin and the fixing sleeve; the sample bin is internally provided with a sponge for adsorbing body tissues. The utility model discloses it is easy and simple to handle, through setting up the sample nest, realized a lot of samplings in the puncture operation to the sample can be preserved well to the sample nest in, conveniently takes.

Description

Novel puncture needle

Technical Field

The utility model relates to the field of medical equipment, specific theory relates to a novel pjncture needle.

Background

The prostatic cancer is a common tumor in clinic, and the incidence rate and the early detection rate of the prostatic cancer are obviously improved along with the aggravation of the aging and the aggravation of the medical level in China. Prostate puncture biopsy is the main means of prostate cancer screening and definite diagnosis, prostate puncture route includes transrectal prostate puncture biopsy and transperineal prostate puncture biopsy, two kinds of puncture routes all use the prostate puncture biopsy needle of the same principle at present, after the prostate puncture biopsy needle that uses at present clinically punctures the sample again, need take out the biopsy needle, take off the sample by assistant or operator, place in the sample container, this process complex operation, it is unfavorable for operator's accurate location to go out the needle repeatedly, secondly can increase patient's wound and misery, can lengthen operating time in addition, longer can cause patient's strength not to appear the complication, and can increase the infection rate. The number of specimens taken out by puncture is often large, and a pathologist needs to expend more energy for arranging the specimens.

Therefore, a novel puncture needle needs to be designed, so that repeated sampling and sample storage after sampling can be facilitated, the detection accuracy is improved, and meanwhile, the pain of a patient is relieved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel puncture needle for solving the technical problem.

The utility model discloses a realize according to following technical scheme:

a novel puncture needle comprises a body and a puncture needle assembly penetrating out of the body, wherein the puncture needle assembly comprises a needle core and a needle sleeve, the rear part of the body is provided with a pulling bolt for driving the puncture needle assembly to stretch, the front part of the body is provided with a baffle plate, a support is fixed on the baffle plate, and the front end of the support is provided with a fixed sleeve; a sample nest is movably mounted on the support, a plurality of through pore channels are formed in the sample nest and are used as sample bins, and adjacent sample bins are communicated with each other; the pricking pin assembly sequentially passes through the baffle, the specimen bin and the fixing sleeve; the sample bin is internally provided with a sponge for adsorbing body tissues.

Furthermore, the bracket comprises a first bracket and a second bracket, the first bracket is internally provided with a fixing shaft, the second bracket is provided with a fixing shaft, and the setting direction of the fixing shaft is the same as the extending direction of the pricking pin assembly; the tail ends of the first support and the second support are fixed on the baffle, and the head ends of the first support and the second support are connected with the fixed sleeve.

Further, the specimen nest comprises a nest shell and a flexible support; the nest shell is of a double-layer structure and comprises an outer shell and an inner shell which are nested with each other, gaps are formed on the side walls of the outer shell and the inner shell at the same angle of the circumference, and one end of the gap of the outer shell is connected with one end of the gap of the inner shell through a connecting part; the flexible stent is deployed in a cavity between the outer shell and the inner shell; a circular pipeline is formed in the center of the inner shell, and the fixed shaft penetrates through the pipeline; the specimen nest rotates by taking the fixed shaft as a center.

Furthermore, the specimen bin is located the flexible support, and the specimen bin is unanimous with the extending direction of fixed axle.

Further, form the recess that equals with sample storehouse figure on the shell body outer wall, the distance equals between the adjacent recess, and the extending direction of recess and fixed axle is unanimous.

Further, the fixing device is of a flat sheet structure, and the bottom end of the fixing device is in contact with the outer wall of the outer shell or embedded in the groove.

Furthermore, a tissue groove and a puncture needle protrusion are formed on the needle sleeve, the tissue groove is located between the head end of the needle sleeve and the fixed sleeve, and the puncture needle protrusion is located between the fixed sleeve and the baffle.

Further, the sponge is the columnar structure, places two sponges in every sample storehouse, and the back of two sponges all laminates with the sample storehouse inner wall, and the front middle part of two sponges is laminated each other.

The utility model has the advantages and beneficial effects that:

the utility model discloses it is easy and simple to handle, through setting up the sample nest, realized a lot of samplings in the puncture operation to the sample can be preserved well to the sample nest in, conveniently takes. The operation steps of the device are simple, the sample container is arranged, the puncture biopsy sample can be directly placed into the sample container, the complex operation steps of repeatedly withdrawing and inserting the needle are reduced, the positioning accuracy of an operator is facilitated, the operation can be completed without an assistant, and the wound of a patient can be relieved without repeatedly withdrawing and inserting the needle. The sample container that this technical scheme provided can dismantle, and its interior sample has arranged according to the puncture smoothly, does benefit to the arrangement of pathology department personnel and further operation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a specimen nest and a specimen cassette according to the present invention;

FIG. 3 is a left side view of the middle bracket and the puncture needle of the present invention;

FIG. 4 is a longitudinal cross-sectional view of a specimen nest according to the present invention;

FIG. 5 is a longitudinal cross-sectional view of the middle housing of the present invention;

FIG. 6 is a longitudinal cross-sectional view (rolled state) of the flexible stent and sponge of the present invention;

FIG. 7 is a longitudinal cross-sectional view (flattened state) of the flexible stent and sponge of the present invention;

FIG. 8 is a schematic structural view of the stylet of the present invention;

fig. 9 is a schematic view of the present invention placing a tissue sample in a specimen chamber.

Wherein, 1, the body; 101. a baffle plate; 2. a first bracket; 3. a second bracket; 4. fixing the sleeve; 5. a needle sleeve; 501. organizing the grooves; 502. the puncture needle is convex; 6. a nest shell; 601. an outer housing; 602. an inner housing; 603. a groove; 604. a connecting portion; 7. a fixed shaft; 8. fixing the scale; 9. a flexible support; 10. pulling the bolt; 11. a sponge; 12. a needle core; 1201. a needle head; 1202. the needle core is convex; 13. a specimen box.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 9, a novel puncture needle comprises a body 1 and a puncture needle assembly penetrating out of the body 1, wherein the puncture needle assembly comprises a needle core 12 and a needle sleeve 5, a pull plug 10 for driving the puncture needle assembly to stretch and retract is arranged at the rear part of the body 1, a baffle plate 101 is arranged at the front part of the body 1, a support is fixed on the baffle plate 101, and a fixed sleeve 4 is arranged at the front end of the support; a sample nest is movably mounted on the support, a plurality of through pore channels are formed in the sample nest and are used as sample bins, and adjacent sample bins are communicated with each other; the puncture needle assembly sequentially penetrates through the baffle plate 101, a specimen bin and the fixed sleeve 4; the sample bin is internally provided with a sponge 11 for adsorbing body tissues. The transmission mechanism inside the body 1, and the principle of extending and retracting the lancet assembly by means of the pull plug 10, are similar to common lancets, for example, see Super-CoreTM semi-automatic biopsy needles manufactured by us MD or 16G biopsy needles manufactured by Precisa, italy or see domestic patent CN 201510101003.9. The lancet assembly passes through the center of the shield 101 and through the retaining sleeve 4, and the retaining sleeve 4 acts as a guide.

The support comprises a first support 2 and a second support 3, the first support 2 is internally provided with a fixing shaft 8, the second support 3 is provided with a fixing shaft 7, and the arrangement direction of the fixing shaft 7 is the same as the extension direction of the pricking pin component; the tail ends of the first support 2 and the second support 3 are fixed on the baffle 101, and the head ends are connected with the fixed sleeve 4. The first bracket 2 and the second bracket 3 each have a structure similar to a U-shaped bracket. The fixing shaft 7 is movably connected with the second support 3, the head end of the fixing shaft 7 is a knob, the outer wall of the tail end of the fixing shaft forms threads, and the tail end of the fixing shaft 7 penetrates through one arm of the second support 3 and is finally screwed into a fixing hole in the center of the other arm of the second support 3 to prevent falling off.

The specimen nest comprises a nest shell 6 and a flexible support 9; the nest shell 6 is of a double-layer structure and comprises an outer shell 601 and an inner shell 602 which are nested with each other, gaps are formed on the side walls of the outer shell 601 and the inner shell 602 at the same angle of the circumference, and one end of the gap of the outer shell 601 is connected with one end of the gap of the inner shell 602 through a connecting part 604; the flexible stent 9 is disposed in the cavity between the outer housing 601 and the inner housing 602; a circular pipe is formed at the center of the inner housing 602, and the fixed shaft 7 passes through the pipe; the specimen nest rotates around the fixed shaft 7. The specimen bin is positioned in the flexible support 9 and is consistent with the extending direction of the fixed shaft 7.

The outer wall of the outer shell 601 forms grooves 603 equal to the number of the specimen bins, the distance between the adjacent grooves 603 is equal, and the extending directions of the grooves 603 and the fixed shaft 7 are consistent.

The fixing mark 8 is a flat sheet structure, and the bottom end of the fixing mark contacts with the outer wall of the outer shell 601 or is embedded in the groove 603.

The needle sleeve 5 is provided with a tissue groove 501 and a puncture needle protrusion 502, the tissue groove 501 is positioned between the head end of the needle sleeve 5 and the fixed sleeve 4, and the puncture needle protrusion 502 is positioned between the fixed sleeve 4 and the baffle 101. The tissue groove 501 is a tissue specimen taking-out part; the puncture needle projection 502 is positioned behind the tissue groove 501, blocks the needle core projection 1202 and plays a role in braking the puncture needle at a fixed point. At the top of the core 12 is a needle 1201, the tip of the needle 1201 being sharp for rapid cutting of tissue. The position of the needle 1201 and the hub projection 1202 on the hub 12 is shown in fig. 8.

Sponge 11 is the columnar structure, places two sponges 11 in every sample storehouse, and the back of two sponges 11 all laminates with the sample storehouse inner wall, and the front middle part of two sponges 11 is laminated each other.

The principle and the using method of the utility model are as follows:

before use, the sponge 11 is deployed in the flexible support 9, and the flexible support 9 is placed in the nest shell 6 to form a complete specimen nest. The fixed shaft 7 is pulled out, the sample nest is placed on the second bracket 3, and the needle sleeve 5 is placed at the notch of the sample nest.

The mechanism in the body is consistent with the common puncture needle, so the puncture can be performed according to the common operation mode.

After successful puncture, the pulling plug 10 is pulled backwards, the protruding part of the needle 1201 cuts off a part of the punctured tissue and pulls the cut tissue into the tissue groove 501, the pulling plug 10 is pulled continuously, and the cut tissue sample moves to the puncture needle convex 502 position along the interior of the needle sleeve. At this time, the fixing mark 8 is fixed to the adjacent next groove 603 by rotating the sample nest, the rigidity of the fixing mark 8 is not strong, so that the fixing mark is clamped in the groove 603 to limit the natural rotation of the sample nest, but when the sample nest is rotated by actively applying force by hands, the fixing mark is separated from the groove 603 for generating micro deformation, and the rotation of the sample nest is not influenced. The two sponges 11 in the specimen chamber bring out the specimen in the puncture needle protrusion 502 through the friction effect, fix the specimen between the two sponges 11, and repeat the process until all the specimen chambers in the specimen nest are filled. Finally, the specimen nest is taken off from the fixed shaft 7, and the sponge 11 can be taken out from the flexible support 9.

Both the first bracket 2 and the second bracket 3 are provided with connecting buckles which are easy to cut off, so that medical scissors or pliers can be conveniently used for clipping. When the specimen nest needs to be taken down, the fixing shaft 7 is firstly pulled out, the first support 2 and the second support 3 are cut off at the position of the connecting buckle, the broken first half part (including the fixing sleeve 4) is taken down along the puncture needle direction, and finally the specimen nest is taken down.

The device is also matched with a specimen box 13 for use, the specimen box 13 is cylindrical, and the inner space of the specimen box 13 is slightly larger than a specimen nest; after the sample finishes, arrange the sample nest in the specimen-box, cover the lid, can conveniently transport the laboratory, avoid losing and polluting in the transportation.

During the assay, the flexible holder 9 is removed and unfolded as shown in fig. 7, facilitating the use of the sponge 11 stained with the sample.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.

Claims

1. A novel puncture needle comprises a body (1) and a puncture needle assembly penetrating out of the body (1), wherein the puncture needle assembly comprises a needle core (12) and a needle sleeve (5), the rear part of the body (1) is provided with a pull plug (10) driving the puncture needle assembly to stretch, and the novel puncture needle is characterized in that the front part of the body (1) is provided with a baffle (101), a support is fixed on the baffle (101), and the front end of the support is provided with a fixed sleeve (4); a sample nest is movably mounted on the support, a plurality of through pore channels are formed in the sample nest and are used as sample bins, and adjacent sample bins are communicated with each other; the puncture needle assembly sequentially penetrates through the baffle plate (101), a specimen bin and the fixed sleeve (4); the sample bin is internally provided with a sponge (11) for adsorbing body tissues.

2. A novel puncture needle according to claim 1, characterized in that the bracket comprises a first bracket (2) and a second bracket (3), the first bracket (2) is provided with a fixing mark (8) inwards, the second bracket (3) is provided with a fixing shaft (7), and the direction of the fixing shaft (7) is the same as the extending direction of the puncture needle component; the tail ends of the first support (2) and the second support (3) are fixed on the baffle (101), and the head ends of the first support and the second support are connected with the fixed sleeve (4).

3. A new needle puncture according to claim 2, characterized in that the specimen nest comprises a nest housing (6) and a flexible support (9); the nest shell (6) is of a double-layer structure and comprises an outer shell (601) and an inner shell (602) which are nested with each other, gaps are formed on the side walls of the outer shell (601) and the inner shell (602) at the same angle of the circumference, and one end of the gap of the outer shell (601) is connected with one end of the gap of the inner shell (602) through a connecting part (604); the flexible stent (9) is deployed in a cavity between an outer shell (601) and an inner shell (602); a circular pipeline is formed in the center of the inner shell (602), and the fixed shaft (7) penetrates through the pipeline; the specimen nest rotates by taking the fixed shaft (7) as a center.

4. A new needle according to claim 3, characterised in that the cartridge is located in a flexible holder (9) and is extended in the same direction as the fixed shaft (7).

5. A novel puncture needle according to claim 3, characterized in that the outer wall of the outer shell (601) is provided with grooves (603) with the number equal to that of the specimen bins, the distance between the adjacent grooves (603) is equal, and the grooves (603) are consistent with the extending direction of the fixed shaft (7).

6. A new type of puncture needle according to claim 5, characterized in that the fixing mark (8) is a flat sheet structure, the bottom end of which contacts with the outer wall of the outer casing (601) or is embedded in the groove (603).

7. A novel puncture needle according to claim 1, characterized in that the needle sheath (5) is formed with a tissue groove (501) and a puncture needle protrusion (502), the tissue groove (501) is located between the head end of the needle sheath (5) and the fixed cannula (4), and the puncture needle protrusion (502) is located between the fixed cannula (4) and the baffle plate (101).

8. A novel puncture needle according to claim 1, characterized in that the sponges (11) are of a columnar structure, two sponges (11) are placed in each specimen chamber, the back surfaces of the two sponges (11) are attached to the inner wall of the specimen chamber, and the middle parts of the front surfaces of the two sponges (11) are attached to each other.