CN2143099Y

CN2143099Y - Needle sampling forceps

Info

Publication number: CN2143099Y
Application number: CN 92241907
Authority: CN
Inventors: 黎维臣; 庞巍; 姚晓瞳; 陈恩凤; 吴登斌
Original assignee: Dawn Hospital Of Anshan Iron And Steel Co; Angang Steel Co Ltd
Current assignee: Dawn Hospital Of Anshan Iron And Steel Co; Angang Steel Co Ltd
Priority date: 1992-11-14
Filing date: 1992-11-14
Publication date: 1993-10-06
Anticipated expiration: 2002-11-14

Abstract

The utility model relates to a needle sampling forceps, which belongs to a medical instrument. The needle sampling forceps overcomes the defects of the big damage of an operation excision and a common puncture tool and a single pathological examination. The utility model comprises an outer sleeve pipe, an inner sleeve forceps, a needle core and a spring. The front end of the inner sleeve forceps can be divided into three equal clacks. The side of each clack is all opened with a sharp. The utility model is cone-shaped when expanded to be closed. The utility model is an umbrella-shaped forceps when opened. The utility model has the advantages of simple structure and flexible operation. The needle sampling forceps can simultaneously make slices to have a pathological examination and extract tissue liquid to have a cytology examination. The pathological and the cytology examinations are mutually certificated to enhance the success ration of materials taking and diagnosis accuracy. The shield function of the outer sleeve pipe can reduce or avoid a planting transfer danger, without paining and damaging.

Description

Needle sampling forceps

This utility model belongs to medical apparatus and instruments.

In curative activity, determine that body surface and the dark character that swells thing at the position can adopt excision to carry out pathological examination.General puncture pincers, the puncture pincers of producing as Japan, West Germany are inserted in thumb, the forefinger of same finger in the ring, firmly cut tissue, cause easily that to cut when organizing operation heavier, are easy to plantation and shift, and locates not accurate enough and are reluctant acceptance.Use other Centesis instruments, for example spiral needle, slot type pin, umbrella biopsy needle and other puncture instruments all can only be done single pathologic finding, and since organize scrappy, draw materials too little very little, can not carry out pathologic finding satisfactorily.Can not guarantee whether to get required tissue and carry out objective observation, make the success rate of drawing materials low, the poor accuracy of diagnosis.

The purpose of this utility model is that a kind of can the pincers satisfactorily of design got enough tissues; carry out check pathological section; but extracting interstitial fluid again; carry out cytolgical examination; can objective observation whether clamp and get required tissue; can protect simultaneously its normal structure minimizing again or avoid plantation to shift, therefore can improve the success rate and the accurate rate of diagnosis of biopsy.

Accompanying drawing 1 is a pin type biopsy forceps structural representation.This utility model is simple in structure, is made up of trocar sheath (1), inside race pincer (2), nook closing member (3) and spring (4) four parts.

Trocar sheath is identical with sleeve pipe outside the common lumbar puncture needle, and its length is than the short 150mm of inside race pincer pin stalk, between its pin external diameter 1.2-2.0mm.

Inside race pincer is a hollow pipe, is divided into three lobes below its front end 150-200mm, and sharp sword is all driven in every lobe side, and expanding closed at the 50mm place is coniform, opens to be umbrella pincers (as shown in Figure 2), and opening bore should be less than 2mm.Its external diameter should be identical with the trocar sheath external diameter or more bigger when coniform being closed into to expand part, and the necessary tight close of epiconus cutting edge of a knife or a sword must not separate when thrusting skin.Its afterbody is a T type pintle, and length can be according to the supporting different size of making of the degree of depth of site of puncture, and pin stalk external diameter is proper and the trocar sheath internal diameter is identical.

Nook closing member is identical with the nook closing member of common puncture usefulness, and diameter is identical with the inside race pincer internal diameter, but answers activity freely.As get and organize solidly, be difficult to make inside race pincer to open by the elasticity of steel own, can use funnel type nook closing member (seeing accompanying drawing 3) instead, funnel part should be coincide with inside race pincer circular cone rear portion, the funnel diameter is identical with external diameter after expand at the circular cone rear portion.

Spring is spiral, long 150mm, and diameter is identical with trocar sheath pintle internal diameter.

The inside race pincer material is the chromium plating spring steel, remaining parts ordinary syringe material.

Photo 1 is the self-contained material object of pin type biopsy forceps, and photo 2 is the part material object.

The effect operational approach: it is standby that (1) pin type biopsy forceps assembles the back sterilization; (2) nip trocar sheath with hand thumb, forefinger, aim at the sterilization site of puncture of choosing,, slightly firmly can thrust skin with top, centre of the palm afterbody; (3) enter the required organization internal of drawing materials after, observe according to the degree of depth and B ultrasonic, retreat trocar sheath to approaching with inside race pincer T type pintle, then the inside race pincer tapered segment opens automatically according to elasticity and is umbrella; (4) promote T type pintle forward, tissue is entered in the pincers; (5) rotate getting in touch of needle body inside race pincer side edge excising forceps inner tissue and surrounding tissue; (6) loosen trocar sheath, spring promotes trocar sheath forward, or slightly firmly to feeling have resistance to end, the umbrella icarceration that inside race pincer is opened is combined into coniform; (7) rotate needle body and make pincers inner tissue and base portion dialysis; (8) extract the pin type biopsy forceps, operate then biopsy tissue according to (3) and deviate from, fixing censorship.

Illustrate: ［ 1 ］ desires to carry out cytolgical examination as extracting interstitial fluid, can extract nook closing member out after (3) operation, connects syringe, extracts to get final product; ［ 2 ］ whether enter in a organized way in the pincers, can observe the nook closing member situation of movement, outwards move if any promoting nook closing member in being organized in (4) operating procedure, need only on move about 50mm and get final product; ［ 3 ］ as get and organize solidly, be difficult to make inside race pincer to open by this projectile of steel property, can use the funnel type nook closing member instead, after (3) operation, be pulled outwardly the funnel type nook closing member inside race pincer is opened, carry out (4) operating procedure then; ［ 4 ］ as organizing to deviate from, promote nook closing member.

Whether this utility model is simple in structure, uses flexibly, and is easy to operate, is easy to grasp: can move observation by nook closing member and clamp and get tissue in piercing process, improve the success rate of biopsy; Can carry out cytology and check pathological section, the two carries out simultaneously, once finishes, and the two corroborates each other, and improves the accuracy of diagnosis; The shielding action of trocar sheath can reduce or avoid planting the danger of transfer; The funnel type nook closing member has solved drawing materials of stereome well; Spring can play buffering and dynamic action, and it is excessive too quickly to avoid exerting oneself; Parts such as inside race pincer can be made into the length and the diameter of all size, can and carry out biopsy at each histoorgan deeply to the whole body body surface and draw materials; No pain, not damaged.

Description of drawings:

Accompanying drawing 1 is a pin type biopsy forceps structural representation.(1) is trocar sheath among the figure, and (2) are inside race pincers, and (3) are nook closing members, and (4) are springs.

Accompanying drawing 2 is umbrella pincers sketch maps that the inside race pincer front end opens.

Accompanying drawing 3 is funnel type nook closing member structural representations.

Claims

1, a kind of pin type biopsy forceps, form by trocar sheath, inside race pincer, nook closing member and spring, it is characterized in that inside race pincer is a hollow pipe, be divided into three lobes below its front end 150-200mm, sharp sword is all driven in every lobe side, expand closed for coniform at the 50mm place, open and be the umbrella pincers, opening bore should be less than 2mm, expand part when being closed into circular cone, and its external diameter should be identical with the trocar sheath external diameter or more bigger, the necessary tight close of epiconus cutting edge of a knife or a sword, inside race pincer length can be according to the supporting different size of making of the degree of depth of site of puncture, and pin stalk external diameter and trocar sheath internal diameter coincide; Trocar sheath is identical with sleeve pipe outside common the threading a needle, and its length is than the short 150mm of inside race pincer pin stalk, between its pin external diameter 1.2-2.0mm; Nook closing member is identical with the nook closing member of common puncture usefulness, and diameter is identical with the inside race pincer internal diameter, but answers activity freely; Spring is spiral, long 150mm, and diameter is identical with trocar sheath pintle internal diameter.

2, according to the described pin type biopsy forceps of claim 1, it is characterized in that said nook closing member also can use the funnel type nook closing member instead, funnel part should be coincide with inside race pincer circular cone rear portion, and the funnel diameter is identical with external diameter after expand at the circular cone rear portion.

3, according to claim 1 or 2 described pin type biopsy forcepss, it is characterized in that said inside race pincer is the chromium plating spring steel, remaining parts is made with the ordinary syringe material.