CN206792427U

CN206792427U - Tumor sampler

Info

Publication number: CN206792427U
Application number: CN201621138419.4U
Authority: CN
Inventors: 孟燕
Original assignee: Shiyan Peoples Hospital
Current assignee: Shiyan Peoples Hospital
Priority date: 2016-10-19
Filing date: 2016-10-19
Publication date: 2017-12-26
Anticipated expiration: 2026-10-19

Abstract

The utility model provides a tumor sampler, wherein a second piston is arranged in a sleeve, one end of the second piston is fixed with a second piston rod, the other end is fixed with a second needle tube, and the second piston rod passes through the sleeve; the end part of the second needle tube is in threaded connection with the first needle tube, and the tail end of the first needle tube is provided with a conical needle head; a first piston is arranged in the second needle tube, and a first piston rod is fixed on the first piston and penetrates through the second piston rod; the sleeve tip is equipped with the cutter of round along the sleeve wall direction, is equipped with a sample connection on the first syringe, and the sample connection edge is equipped with convex barb and cuts, and the barb is cut into slices and is used the cutting with the cutter cooperation. The utility model discloses a first piston in the promotion syringe needle makes it produce the negative pressure, inhales the syringe needle with the tissue of tumour department in, then uses the cutting through barb section and cutter cooperation, and the device makes sample tissue inevitable enter into the sample connection according to the negative pressure, realizes disposable cutting.

Description

A kind of tumour sampler

Technical field

Medical instruments field is the utility model is related to, more particularly to a kind of tumour sampler.

Background technology

It is well known that can successfully be realized by operative incision when clinically carrying out body-surface tumor active check sampling to patient, But because operative incision can bring painful larger to patient, therefore much more general at present it is sampled using syringe.It is existing Tumour sampling be all first to puncture after cut-out tissue, it is necessary to which taking out puncture can just know whether and be cut in a organized way, if do not had Repeated puncture is also needed to, so brings more pain to patient.And repeatedly repeatedly puncture easily cause tumor tissues transfer and Tumour spreads.Therefore to ensure disposable puncture success, puncture needle can will effectively cut tumor tissues and appropriate safety belt Go out, but the sampler of prior art can not all ensure completely to take sample excision out of during primary sample.

Utility model content

The utility model proposes a kind of tumour sampler, by promoting the first piston in needle tubing its is produced negative pressure, By in the tissue suction needle tubing of affected area, then made by barb section with cutting knife with the use of cutting, the device according to negative pressure Obtain sample tissue and necessarily enter sample tap, realize disposable cutting.

The utility model is realized particular by following technical scheme：

A kind of tumour sampler, including syringe needle, the first needle tubing, the second needle tubing, sleeve, first piston, First piston bar, Two pistons, second piston bar, barb section and cutting knife, the sleeve is interior to be provided with second piston, and one end of the second piston is consolidated Determine second piston bar, the other end fixes the second needle tubing, and the second piston bar passes through sleeve；The second syringe tip screw thread connects The first needle tubing is connect, the end of first needle tubing is provided with the syringe needle of taper；It is provided with first piston in second needle tubing, described the One piston rod is fixed on first piston and passes through second piston bar；The sleeve ends are provided with circle cutting along sleeve wall direction Knife, first needle tubing are provided with a sample tap, and the sample tap edge is provided with the barb section of protrusion, the barb section with Cutting knife is with the use of cutting.

Preferably, the end of the First piston bar is provided with the first draw back plate, and the end of the second piston bar is provided with the Two draw back plates, second draw back plate are provided with sunk structure, and the area of the sunk structure is more than first draw back plate Area.

Preferably, first draw back plate is that two layers of draw back plate superposition fixation forms hierarchic structure, wherein positioned at inner side The area for the draw back plate being fixed in First piston bar is less than the area of the draw back plate in outside.

Preferably, the barb slicing edge is in smooth arc structure.

Had the beneficial effect that caused by the utility model：The utility model is simple in construction, easy to operate, can disposably cut Sample tissue, sample excision is taken out of completely, the uncertain sampling factor of existing sampler is avoided, alleviates patient's The pain of tumor tissues sampling.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the schematic top plan view of sample tap in the utility model.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

A kind of tumour sampler as shown in Figure 1-2, including syringe needle 1, the first needle tubing 2, the second needle tubing 3, sleeve 4, first are lived Plug 8, First piston bar 9, second piston 12, second piston bar 13, barb section 6 and cutting knife 7, the sleeve 4 is interior to be provided with second Second piston bar 13 is fixed in piston 12, one end of the second piston 12, and the other end fixes the second needle tubing 3, the second piston Bar 13 passes through sleeve 4；The end thread of second needle tubing 3 connects the first needle tubing 2, and the end of first needle tubing 3 is provided with taper Syringe needle 1；Be provided with first piston 8 in second needle tubing 3, the First piston bar 9 is fixed on first piston 8 and passes through the Two piston rods 13；The end of sleeve 4 is provided with cutting knife 7 of the circle along sleeve wall direction, and first needle tubing 2 takes provided with one Sample mouth 5, the edge of sample tap 5 are provided with the barb section 6 of protrusion, and the barb section 6 is with cutting knife 7 with the use of cutting.Institute The end for stating First piston bar 9 is provided with the first draw back plate 10, and the end of the second piston bar 13 is provided with the second draw back plate 14, institute State the second draw back plate 14 and be provided with sunk structure 11, the area of the sunk structure 11 is more than the face of first draw back plate 10 Product；First draw back plate 10 is that two layers of draw back plate superposition fixation forms hierarchic structure, wherein being fixed on first positioned at inner side The area of draw back plate on piston rod 9 is less than the area of the draw back plate in outside；6 edges of barb section are in smooth circular arc knot Structure.

Operation principle of the present utility model is：First draw back plate 10, the second draw back plate 14 are advanced into maximum row using preceding Journey, and insert the needle into tumor tissues, sample tap 5 is at required sampling point in the tissue, slightly pulls first Draw back plate 10 causes the inner chamber of the first needle tubing 2 to be in negative pressure, and the tumor tissues of the position of sample tap 5 are drawn into sample tap.This When, the second draw back plate 14 is pulled, drives whole first needle tubing 2 to move, until the barb section 6 at sample tap 5 connects with cutting knife 7 Touch, the sample tissue in sample tap is cut off, and the tissue cut is entered inside needle tubing.With the continuation of the second draw back plate 14 Pull, whole device is taken out, eventually through the threaded joints for opening the first needle tubing 2, the second needle tubing 3, sample tissue is taken Go out to be analyzed and processed.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in Protection domain within.

Claims

A kind of 1. tumour sampler, it is characterised in that including syringe needle (1), the first needle tubing (2), the second needle tubing (3), sleeve (4), First piston (8), First piston bar (9), second piston (12), second piston bar (13), barb section (6) and cutting knife (7), institute State and second piston (12) is provided with sleeve (4), second piston bar (13) is fixed in one end of the second piston (12), and the other end is solid Fixed second needle tubing (3), the second piston bar (13) pass through sleeve (4)；Second needle tubing (3) end thread connects the first pin Manage (2), the end of first needle tubing (3) is provided with the syringe needle (1) of taper；First piston is provided with second needle tubing (3) (8), the First piston bar (9) is fixed on first piston (8) and passes through second piston bar (13)；Sleeve (4) end Cutting knife (7) provided with a circle along sleeve wall direction, first needle tubing (2) are provided with a sample tap (5), the sample tap (5) Edge is provided with the barb section (6) of protrusion, and the barb section (6) is with cutting knife (7) with the use of cutting.
2. a kind of tumour sampler as claimed in claim 1, it is characterised in that the end of the First piston bar (9) is provided with First draw back plate (10), the end of the second piston bar (13) are provided with the second draw back plate (14), second draw back plate (14) Sunk structure (11) is provided with, the area of the sunk structure (11) is more than the area of first draw back plate (10).
3. a kind of tumour sampler as claimed in claim 2, it is characterised in that first draw back plate (10) is two layers of push-and-pull Plate superposition fixation forms hierarchic structure, wherein the area positioned at the draw back plate being fixed in First piston bar (9) of inner side is less than The area of the draw back plate in outside.
4. a kind of tumour sampler as claimed in claim 1, it is characterised in that described barb section (6) edge is in smooth Arc structure.