CN208741029U

CN208741029U - Modified aspiration biopsy rifle

Info

Publication number: CN208741029U
Application number: CN201721711404.7U
Authority: CN
Inventors: 李珂; 张军; 易茜
Original assignee: Third Affiliated Hospital of PLA Army Medical University
Current assignee: Third Affiliated Hospital of PLA Army Medical University
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2019-04-16
Anticipated expiration: 2027-12-11

Abstract

The utility model discloses a kind of modified aspiration biopsy rifles; including core and handle outside puncture needle inner core, puncture needle; it is connect with handle to core ejectable outside puncture needle inner core and puncture needle; and the outer core of puncture needle can be slidably set in outside puncture needle inner core relatively; it is also arranged with outside core outside puncture needle and protects epitheca made of metal material; one end of protection epitheca is fixedly connected with handle, and the outer core of puncture needle can opposite protection epitheca sliding.When the utility model is efficiently modified deep tissue puncture, because puncture channel frictional resistance influences, when causing to pull aspiration biopsy rifle second gear trigger, the problem of piercing lesion cutting is organized in puncture needle core groove can not effectively be popped up by puncturing epitheca.

Description

Modified aspiration biopsy rifle

Technical field

The utility model relates to the field of medical instrument technology, and in particular to a kind of modified aspiration biopsy rifle.

Background technique

It is preoperative clearly internal lesion nature in clinical treatment, is usually taken and gives lesion puncture under B ultrasound or CT guidance Biopsy.The aspiration biopsy rifle of the prior art mainly includes puncture needle inner core, the outer core of puncture needle and handle, is controlled and is punctured by handle The ejection of the outer core of needle inner core and puncture needle is sampled.Clinical use cell taking gun basic functional principle is puncture with groove Needle inner core and set on outside inner core outside one layer of puncture needle core B ultrasound or CT guidance under slowly reach puncture lesion edge, then detain First grade of the trigger of fixed handle, band groove inner core piercing is intralesional, then cocking second gear, and the outer core of puncture needle quickly pops up thorn Enter intralesional covering inner core and its groove area, even if in cutting tissue to groove, then aspiration biopsy device is extracted, tissue just takes In in puncture needle inner core groove.However, if lesion is deeper, apart from body surface distance farther out (such as neighbouring tumor focus of the hilus renalis, need through Approach aspiration biopsy by back side greater psoas muscle), clinical way is first to puncture together in B ultrasound or CT Conducted Puncture needle inner core and outer core It reaches by lesion, pulls first grade of trigger first, inner core can be easily pierced into intralesional at this time, but be pulled past when second gear trigger It is pierced into intralesional covering puncture needle inner core and groove area toward finding that outer core can not be popped up easily, leads to not effectively cut lesion group It is woven in groove, causes puncture that tissue is taken to fail.By carefully studying, it has been found that cause outer core that can not easily pop up piercing disease Core reasons in stove are as follows: because lesion is too deep, by from skin and its subcutaneous tissue, muscle when the outer core of aspiration biopsy rifle pops up Equal frictional resistance influence, and cause outer core that can not easily pop up intralesional next effectively cut of piercing and are organized in groove.Lesion is deeper , puncture access on frictional resistance it is bigger, which is more obvious.

Summary of the invention

In view of this, the purpose of this utility model is to provide a kind of modified aspiration biopsy rifles.

In order to achieve the above objectives, the utility model provides the following technical solutions: a kind of modified aspiration biopsy rifle, including wears It is connect with handle to the outer core of pricker inner core, puncture needle and handle, puncture needle inner core and the outer core ejectable of puncture needle, and outside puncture needle Core can be slidably set in outside puncture needle inner core relatively, be also arranged with outside protection made of metal material outside core outside puncture needle Sheath protects one end of epitheca to be fixedly connected with handle, and the outer core of puncture needle can opposite protection epitheca sliding.

Further, the end face for protecting epitheca and the outer core of puncture needle are in preejection end face.

Further, protection epitheca is the tubular structure with metal thin-wall.

Further, scale of depth is equipped in the outer surface of protection epitheca.

The utility model has the beneficial effects that: when being efficiently modified deep tissue puncture, because of puncture channel frictional resistance shadow It rings, puncture epitheca can not effectively pop up piercing lesion cutting and be organized in puncture needle when leading to pull aspiration biopsy rifle second gear trigger The problem of core groove.

Detailed description of the invention

In order to keep the purpose of this utility model, technical scheme and beneficial effects clearer, the utility model provides as follows Attached drawing is illustrated: Fig. 1 is the utility model modified aspiration biopsy rifle structural schematic diagram.

Fig. 2 is the structural schematic diagram after the puncture needle inner core pop-up of modified aspiration biopsy rifle.

Fig. 3 is the structural schematic diagram after the outer core pop-up of puncture needle of modified aspiration biopsy rifle.

In figure, 1 is puncture needle inner core, and 2 be the outer core of puncture needle, and 3 be handle, and 4 be protection epitheca.

Specific embodiment

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art The utility model can be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.

As shown in Figure 1, a kind of modified aspiration biopsy rifle of the utility model includes puncture needle inner core 1,2 and of the outer core of puncture needle It is connect with handle 3 to handle 3, puncture needle inner core 1 and puncture needle 2 ejectable of outer core, and the outer core 2 of puncture needle can slidably cover relatively It is located at outside puncture needle inner core 1, puncture needle inner core 1 has the recess notch of sampling.Metal is also arranged with outside core 2 outside puncture needle Epitheca 4 is protected made of material, one end of protection epitheca 4 is fixedly connected with handle 3, and the outer core 2 of puncture needle can opposite protection epitheca 4 Sliding, i.e., in sampling, protection epitheca 4 does not need pop-up but remains stationary, puncture needle inner core 1 and the outer core 2 of puncture needle Successively pop-up is to be sampled.When use, puncture needle inner core and the outer core of puncture needle are controlled by handle first and received to handle orientations Contracting protects the front end face of epitheca 4 and the outer core 2 of puncture needle exciting preejection end face at this time, that is, protects the length of epitheca 4 Preejection equal length is being excited with core 2 outside puncture needle.Protection epitheca 4 is the tubular structure with metal thin-wall, internal diameter Size and the outer diameter size of the outer core 2 of puncture needle are adapted, as long as the outer core 2 of puncture needle can be enable swimmingly sliding in protection epitheca 4 It is dynamic.Thin-walled design can ensure the smallest wound when obtaining machine.It is carved in the outer surface of protection epitheca 4 and is equipped with depth Scale, in order to position.

When continuing to use, first core 2 and protection epitheca 4 are worn together outside B ultrasound or CT Conducted Puncture needle inner core 1, puncture needle Thorn reaches by lesion.As shown in Fig. 2, then first pulling first grade of trigger of handle 3, puncture needle inner core 1 can easily be pierced into lesion It is interior.As shown in figure 3, then pulling second gear trigger, pop up the outer core 2 of puncture needle.Because the utility model is outside puncture needle on core 2 Addition devises one layer of protection epitheca 4, and the large area for having separated the outer core 2 of puncture needle and subcutaneous tissue directly contacts, can be effective Reduce the pop-up when puncturing of the outer core of traditional puncture gun causes due to by puncture channel, that is, subcutaneous tissue huge frictional resistance It effectively can not quickly be pierced into next effectively cut of lesion to be organized at needle core recess notch, reduce the pop-up resistance of the outer core 2 of puncture needle Power, and it is smaller on the influence of puncture needle size after one layer of metal thin-wall protection epitheca 4 of addition, and using effect is very good.

It should be noted that such as in relation to handle 3, puncture needle inner core 1, the specific structure of the outer core 2 of puncture needle and handle 3 The technical solution that specific control puncture needle inner core 1 and the outer core 2 of puncture needle work is the prior art, and details are not described herein again.

Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.

Claims

1. a kind of modified aspiration biopsy rifle, including core and handle outside puncture needle inner core, puncture needle, the puncture needle inner core and institute It is connect with the handle with stating the outer core ejectable of puncture needle, and the outer core of the puncture needle can slidably be set in the puncture relatively Outside needle inner core, it is characterised in that: it is also arranged with outside core outside the puncture needle and protects epitheca made of metal material, the protection One end of epitheca is fixedly connected with the handle, and the outer core of the puncture needle can the relatively described protection epitheca sliding.

2. modified aspiration biopsy rifle according to claim 1, it is characterised in that: it is described protection epitheca end face with it is described The outer core of puncture needle is in preejection end face.

3. modified aspiration biopsy rifle according to claim 2, it is characterised in that: the protection epitheca is with metal foil The tubular structure of wall.

4. modified aspiration biopsy rifle according to claim 3, it is characterised in that: it is set in the outer surface of the protection epitheca There is scale of depth.