CN2469888Y

CN2469888Y - Protractor

Info

Publication number: CN2469888Y
Application number: CN 01212083
Authority: CN
Inventors: 马作新
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-15
Filing date: 2001-03-15
Publication date: 2002-01-09
Anticipated expiration: 2011-03-15

Abstract

The utility model relates to a protractor used during biopsy, the apparatus has a pipe having a guiding pinhead, and a pair of pincers that can extend to the pipe again to fetch out the predetermine quantity value living tissues in the human body or the animal when the guiding pinhead is took out. Compared with the prior art, the apparatus is more convenient to operate, and the wound is smaller, and the utility model is safe and reliable, the correction rate of the biopsy is increased at the same time.

Description

A kind of Protractor

This utility model relates to a kind of medically for obtaining Protractor used than the biological tissue of deep regional in the human or animal body.

Medically, for determining the character of human body or animal in-vivo tumour, to carry out direct sample to the biological tissue of tumor locus usually, and then it is carried out biopsy.In sampling process, also inequality according to the different sampling methods that adopt in the position at tumor place.As can directly adopt the mode of surgical cutting operation for the tumor sampling of human body surface, this sampling is comparatively simple.And take a sample for the hollow organ that communicates with the surface, to directly cut by means of endoscope and relevant appliance usually, so this sampling method relative complex, the utensil of use is more.

Yet, in the prior art, for in the body surface particularly the tumor than deep regional take a sample, because these position staff can not directly touch, so be forced to directly adopt surgical operation to take a sample in some occasions, this kind mode will have big wound on one's body the uke, brings very big misery not only for its body and mind, and the time also will be subjected to executing the restriction of art condition, and then increase the sampling expense in operation.

In order to solve a series of problems that surgical operation brings, but occur the utensil of the direct sample of multiple structure on the market, be referred to as puncture needle.Its structure of one type puncture needle is basic identical with existing entry needle, when sampling operation, this pin is being suffered from the biological tissue of tumor by the human body surface thorn, do circumference formula cutting among a small circle at this tissue then, the negative pressure that is produced when utilizing needle tubing outwards to spur is at last taken out the cell tissue suction that described roundlet middle part cuts down on needle point.The puncture needle of another kind of structure is that needle point is made thread-shaped, when its with the biological tissue of needle point thorn in tumor on the time, continue again to screw, make it have portion of tissue to enter in the screw thread, and then this part tissue taken out.As can be seen, though described puncture needle structure is simple, it is comparatively convenient to use, less with the biological tissue that this kind pin is taken out, and makes its pathologic finding accuracy rate in biopsy relatively low, easily causes false negative result; In addition, adopt this kind pin biopsy sampling, because this pin cuts in sampling process or screws in the process, the cell that breaks away from tissue also is detained in vivo, and the stroke of in body, extracting pin, because human body has certain contractility, cell tissue on the needle point is freely come off in motor process, so the generation of above-mentioned situation causes the malignant cell implantation metastasis probably, brings adverse consequences to the operation receiveing person.

Task of the present utility model provides a kind of Protractor that is used for biopsy clinically, this device can be easily safely predetermined amounts take out the active somatic cell sample of deep regional in the human or animal body, and wound is less relatively in sampling process.

For finishing above-mentioned task, the Protractor that this utility model proposed has one and has the conduit of guiding syringe needle and the clamp that can extend into pre-determined amount biological tissue in taking-up human body in this conduit or the animal body when the guiding syringe needle takes off once more.Conduit is two discrete parts with the guiding syringe needle, two unit constructions can be used as puncture needle together the time and use, when this acupuncture promptly feels hard to the precalculated position, to guide syringe needle takes off, and conduit stayed put, and then clamp is sent in the conduit, and tumor cell tissue's predetermined amounts is taken out by clamp.

Described conduit comprises the rod member of a hollow, and an end of this rod member is provided with socket piece; Described guiding syringe needle has a long pole that can extend in the described conduit, and an end of this rod member is tapered pyramid, and the other end is provided with the bellmouth spare that is complementary with the conduit socket piece.

Described supravasal socket piece has female thread, and the bellmouth spare on the guiding syringe needle is provided with the external screw thread that is complementary with described female thread.

Described clamp far-end is provided with the pivoted jaw by axis limit, and near-end is provided with the control member that can make this jaw make opening and closing movement.

Control member on the described clamp has one and has the handheld component of axial groove and can put into the stick of hollow rod member and described axial groove, and is arranged on the clutch that the makes described jaw action stick front end and that be controlled by this stick.This clutch has a trace that is used to limit the pivot of described jaw and is installed in another extended end of jaw.

Because this utility model has adopted one the clamp that can extend in the conduit, and the anterior jaw of this clamp can be measured out tumor cell tissue on demand almost closedly, so, compared with prior art operation is very easy for this device, and wound is little, safe and reliable, improved the accuracy of biopsy simultaneously.

Below in conjunction with drawings and Examples the present invention is elaborated.

Accompanying drawing 1 is conduit described in the utility model and the schematic appearance of guiding syringe needle;

Accompanying drawing 2 is cross-sectional view of clamp described in the utility model.

Referring to Fig. 1, it provides the surface structure of conduit 1 and 2 one embodiment of guiding syringe needle.Conduit 1 comprises the rod member 11 of a hollow, and an end of this rod member is provided with radially chap and socket piece 12 that have female thread 13.And guiding syringe needle 2 has a long pole 21, and the internal diameter of the external diameter of this long pole and rod member 11 originally is complementary, and it can be extend in the conduit 1 easily.The end 22 of long pole 21 is that tapered rhizoma sparganic taper is a needle point, in long pole 21 is inserted into conduit 1 after, its end that attenuates 22 can be extended out the end of conduit 1.The other end of stock bar 21 is provided with that be complementary and have female thread 23 bellmouth spares 24 with conduit 1 socket piece 12.When guiding syringe needle 2 when being inserted into conduit 1 in, and be fixed, can make this moment this assembly be used as the puncture needle use by the screw thread on socket piece 12 and the bellmouth spare 24.After piercing process is finished, guiding syringe needle 2 can be screwed down, and conduit 1 is stayed the wound place, open by the passage that other object is inserted of property to form one.

Referring to Fig. 2, it provides the surface structure of 3 one embodiment of clamp.This clamp 3 comprises a control member and jaw 31, and clutch 37.Described control member has a handheld component that is annular substantially 33 that has axial groove 32, and hand-held this handheld component 33 can successfully be sent into clamp 3 in the aforesaid conduit 1.Can finish the task of handling jaw 31 in order to make control member, in described axial groove 32, be provided with one that limit and be arranged on a stick 34 in the hollow rod member 38 by sliding shoe 35, sliding shoe 35 links together with hand-held ring 36, makes it can guarantee that stick 34 can slide easily in axial groove 32.One end of stick 34 is connected with clutch 37.This clutch 37 comprises a pivot 39 that is used to limit described jaw 31, in order to make jaw 31 folding easily, radially is respectively arranged with a trace at jaw 31 extended ends.When described stick 34 downwards during the extruding trace, the front end that will force jaw 31 rotates and it is opened around pivot 39, and when stick 34 retracts, trace also moves thereupon, makes jaw 31 forced closed simultaneously.Described jaw 31 can be arranged to arcs of recesses, and should make two concave surfaces relative when knob is adorned, and helps obtaining in little space more cell tissue like this.

Claims

1. Protractor is characterized in that: have one and have the conduit of guiding syringe needle and the clamp that can extend into pre-determined amount biological tissue in taking-up human body in this conduit or the animal body when the guiding syringe needle takes off once more.

2. device according to claim 2 is characterized in that: described conduit comprises the rod member of a hollow, and an end of this rod member is provided with socket piece; Described guiding syringe needle has a long pole that can extend in the described conduit, and an end of this rod member is tapered pyramid, and the other end is provided with the bellmouth spare that is complementary with the conduit socket piece.

3. device according to claim 3 is characterized in that: described supravasal socket piece has female thread, and the bellmouth spare on the guiding syringe needle is provided with the external screw thread that is complementary with described female thread.

4. device according to claim 2 is characterized in that: described clamp far-end is provided with the pivoted jaw by axis limit, and near-end is provided with the control member that can make this jaw make opening and closing movement.

5. according to claim 2 or 5 described devices, it is characterized in that: the control member on the described clamp has one and has the handheld component of axial groove and can put into the stick of hollow rod member and described axial groove, and is arranged on the clutch that the makes described jaw action stick front end and that be controlled by this stick.

6. device according to claim 6 is characterized in that: described clutch has a trace that is used to limit the pivot of described jaw and is installed in another extended end of jaw.