CN202636994U - Biopsy forceps - Google Patents

Abstract

The utility model relates to a medical instrument, and provides a pair of biopsy forceps. The pair of the biopsy forceps is specially used for aspiration biopsy of brain tissue and brain tumors. The pair of the biopsy forceps comprises an outer thimble and an inner core, and the head portion of the outer thimble gradually becomes narrower to form a sharp edge. An annular concave groove is arranged inside the thimble at the junction position of the head portion and the body portion of the outer thimble, and an annular cutting line is arranged in the concave groove. A column-shaped channel is arranged in the wall of the body portion of the outer thimble, and the cutting line stretches from the inner side of the channel to the tail portion of the outer thimble. A user can tension the cutting line in the tail portion of the outer thimble, due to the fact that the cutting line at the head portion of the outer thimble is taken out of the concave groove, and the cutting line gradually becomes narrower to play a cutting role, tissue which enters the outer thimble is cut off, then the user pulls out the outer thimble, the corresponding tissue can be taken out, and biopsy is finished.

Description

Biopsy forceps

Technical field

This utility model relates to medical apparatus, is to be exclusively used in the biopsy forceps that the aspiration biopsy of cerebral tissue, the cerebral tumor is used.

Background technology

Present medical biopsy forceps head end major part all is to use Grasp Modes, opens first two or more digitations, and is closed again, grasping tissue.When this crawl biopsy mode is applied in brain, large to crawl position cerebral tissue or tumor tissues damaged area, taking-up organize little and success rate not high.Need design to overcome these deficiencies, design is for the biopsy forceps of brain special use.

Summary of the invention

This utility model adopts the mode of annular cutting, and accurate positioning is arranged, and is little to brain tissue impairment, gets biopsy success rate advantages of higher.

This utility model comprises trocar sheath and inner core two parts; Described trocar sheath is the pipeline of cylindrical hollow, can be divided into head, body, afterbody.Described sleeve pipe head gradually constriction is sharp edge.The groove that one annular is arranged at the junction of head and body inside pipe casing holds the line of cut of an annular in the groove.The passage of column is arranged in the trocar sheath body wall, extend to afterbody always.Described line of cut outside in the groove of sleeve pipe head and body junction and the line of cut head end be fixed on the sidewall, line of cut extends to the trocar sheath afterbody by the pipeline in the body sidewall always, and stretches out afterbody, manually tractive.

Described inner core is an entity cylindrical-shaped structure, and head end gradually constriction is sharp-pointed head, and body is entity structure, and afterbody has circular extension, conveniently controls.

Described inner core can insert in the described trocar sheath, and the extended trocar sheath head of the sharp-pointed head of inner core, protects the sharp-pointed head of annular of trocar sheath.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, does not consist of restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the schematic diagram of this utility model biopsy forceps trocar sheath,

Fig. 2 is the schematic diagram of this utility model biopsy forceps inner core,

Fig. 3 is the schematic diagram after the combination of this utility model biopsy forceps,

Fig. 4 is the cutaway view of trocar sheath head portion,

Fig. 5 is the cutaway view of trocar sheath end section.

The specific embodiment

For the purpose, technical scheme and the advantage that make this utility model embodiment is clearer, below in conjunction with embodiment and accompanying drawing, embodiment is described in further details to this utility model.At this, this utility model be used for is explained in illustrative examples of the present utility model and explanation thereof, but not as to restriction of the present utility model.

Embodiment one

See also Fig. 1,2,4,5, Fig. 1 is the schematic diagram of this utility model biopsy forceps trocar sheath, and Fig. 2 is the schematic diagram of this utility model biopsy forceps inner core, and Fig. 4 is the cutaway view of trocar sheath head portion, and Fig. 5 is the cutaway view of trocar sheath end section.As shown in the figure, this utility model comprises trocar sheath 100 parts and inner core 200 part two parts; Described trocar sheath 100 is the pipeline of cylindrical hollow, can be divided into head 110, body 120, afterbody 130.Described sleeve pipe head 110 gradually constriction is sharp edge.The groove 112 that one annular is arranged at the junction inside pipe casing of head 110 and body 120 holds the line of cut 111 of an annular in the groove.The passage 121 of column is arranged in the trocar sheath body wall, extend to trocar sheath afterbody 130 always.Described line of cut 111 outside in the groove 112 of sleeve pipe head and body junction and line of cut head end 113 be fixed on the sidewall, line of cut 111 extends to trocar sheath afterbody 130 by the pipeline 121 in the body sidewall always, and stretches out afterbody, manually tractive.

See also Fig. 2, Fig. 2 is the schematic diagram of this utility model biopsy forceps inner core.As shown in the figure, inner core 200 is an entity cylindrical-shaped structure, and head end gradually constriction is sharp-pointed head 210, and body is entity structure 220, and afterbody 230 has circular extension, conveniently controls.

See also Fig. 3, Fig. 3 is the schematic diagram after the combination of this utility model biopsy forceps.Described inner core 200 can insert in the described trocar sheath 100, and the sharp-pointed head 210 extended trocar sheath heads 110 of inner core, protects the sharp-pointed head 110 of annular of trocar sheath.

In actual applications, inner core is inserted trocar sheath, drafts target spot puncture to intracranial, reach desired depth after, extract inner core.The suitable distance that moves on because the trocar sheath head is sharp edges, then has respective organization to be cut and enters in the trocar sheath.The line of cut of tension trocar sheath afterbody, because the line of cut of the junction of trocar sheath head and body is deviate from groove, and constriction produces dissection gradually, and the tissue that enters in the trocar sheath is cut down, extract trocar sheath and can take corresponding tissue out of, finish biopsy.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (3)

1. biopsy forceps is characterized in that:

This biopsy forceps comprises trocar sheath and inner core two parts;

Described trocar sheath is the pipeline of cylindrical hollow, can be divided into head, body, afterbody, described sleeve pipe head gradually constriction is sharp edge, and the groove of an annular is arranged at the junction of head and body inside pipe casing, the line of cut that holds an annular in the groove has the passage of column in the sleeve body wall.

2. biopsy forceps according to claim 1 is characterized in that:

Described line of cut in the groove of sleeve pipe head and body junction and the line of cut head end be fixed on the sidewall, line of cut extends to afterbody by the pipeline in the body sidewall always, and stretches out afterbody, manually tractive.

3. biopsy forceps according to claim 1 and 2 is characterized in that:

Described inner core can insert in the described trocar sheath, and the extended trocar sheath head of the sharp-pointed head of inner core, protects the sharp-pointed head of annular of trocar sheath.

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