CN1054361A

CN1054361A - Semiautomatic biopsy pistol

Info

Publication number: CN1054361A
Application number: CN 90101089
Authority: CN
Inventors: 彭罗民
Original assignee: First Affiliated Hospital of TMMU
Current assignee: First Affiliated Hospital of TMMU
Priority date: 1990-02-28
Filing date: 1990-02-28
Publication date: 1991-09-11

Abstract

A kind of medical semiautomatic biopsy pistol, by the body of a gun, trigger system, body of a gun handle, body of a gun male and female groove, body of a gun baffle ring, rifle bolt baffle plate, rifle bolt, rifle bolt baffle plate groove, rifle bolt motion male and female groove, the needle holder baffle plate, needle holder stroke slot, rifle bolt inwall step, protect needle tubing, needle holder, spring, the taper hold-doun nut, nook closing member, the trocar is formed.Be mainly used in liver,kidney,spleen, muscle, biopsies such as surgery enclosed mass; Also can be used for above-mentioned tissue and cardiac muscle etc. and organize postmortem.This biopsy pistol is easy to use, sends out secondary and promptly finishes as long as the biopsy pistol is thrust (corpse) body target tissue surface double hit of living, and is reliable rapidly.

Description

Semiautomatic biopsy pistol

The present invention relates to a kind of medical apparatus and instruments, particularly a kind of semiautomatic biopsy pistol (semiautomatic biopsy pistol).Be applicable to that tissues such as obtaining liver,kidney,spleen muscle, surgery enclosed mass carries out pathologic finding.

At present, general liver, kidney biopsy needle mainly contains four kinds both at home and abroad, that is: Menghini type, Tru-cut type, Vim-silver-man type and Turkel type.Various characteristics are: the Menghini type relies on vacuum suction to obtain tissue, needs two people's compounding practices, and the tissue mass that one-time puncture obtains is on the low side, conducts a survey inadequately, so often need repeatedly puncture to finish a biopsy.Abroad the someone has improved Menghini type puncture needle, but the one man operation, but it is still on the low side to obtain tissue mass.The problem that the Tru-cut type exists is that operation easier is bigger, though the tissue mass that once obtains checks that enough new hand is difficult to grasp.The Vim-Silverman type is big to tissue injury during with this kind of examination by centesis.The shortcoming of Turkel type is to obtain that to be organized into power low.In view of the foregoing, be necessary the comparatively ideal puncture instrument of development.

Purpose of the present invention is exactly a kind of semiautomatic biopsy pistol that designs at above deficiency.This biopsy pistol can make puncture biopsy simplified control, grasps easily, and it is rapid to obtain tissue, obtains the target tissue amount and can adjust the puncture success rate height as one sees fit.The present invention can reach the purpose that a tool is used more, not only can be used for the kidney biopsy, the liver biopsy, and can be used as the spleen biopsy, muscle biopsy, surgery enclosed mass biopsy etc.As long as make the biopsy needle of cell taking gun press close to the target tissue surface, pull the trigger twice continuously and just can obtain target tissue.

The present invention is achieved in that it is by the body of a gun (1), plate machine system (2), body of a gun handle (3), body of a gun male and female groove (4), body of a gun baffle ring (5), rifle bolt baffle plate (6), rifle bolt (7), rifle bolt baffle plate groove (8) rifle bolt motion male and female groove (9), needle holder baffle plate (10) (12), needle holder stroke slot (11) (13), rifle bolt inwall step (14), protect needle tubing (15), needle holder (16) (17), spring (18) (19), hold-doun nut (20) (21), nook closing member (22), the trocar (23) is formed.

The body of a gun (1) be one whole or two close and form an integral body, make with metal or nonmetallic materials.(in the integral body or between two) is equipped with plate machine system (2) in the body of a gun (1), and plate machine system (2) is made with metal or nonmetallic sturdy material.Body of a gun handle (3) and the body of a gun (1) are whole or are linked as integral body with key screw.Body of a gun male and female groove (4) is positioned at the top of the body of a gun (1), plays restriction rifle bolt (7) and only can seesaw.Body of a gun baffle ring (5) is positioned at the back upper place of the body of a gun (1), moves after plaing a part to stop spring (19).Rifle bolt baffle plate (6) is positioned at last the place ahead of the body of a gun (1), and effect is fixing rifle bolt (7).Rifle bolt (7) is positioned at the top, and going up design at rifle bolt (7) has rifle bolt baffle plate groove (8), rifle bolt motion male and female groove (9), needle holder baffle plate (10) (12), armed device stroke slot (11) (13), rifle bolt inwall step (14).Protect needle tubing (15) and be connected with needle holder (16), when not conducting a survey, be used to protect the nook closing member (22) and the trocar (23) with the nut form.Needle holder (16) (17) is grip sleeve bobbin (23) and nook closing member (22) respectively, and fixing with hold-doun nut (21) (20).The screw of needle holder (16) (17) is tapered and the crack is arranged, so when being tightened nut, the trocar (23) and nook closing member (22) promptly are securely fixed on the needle holder (16) (17).Spring (18) (19) travels forward to needle holder (16) (17) respectively, and hold-doun nut (20) (21) is tapered, and inwall is consistent with needle holder (16) (17) screw.Nook closing member (22) tip has gets the thing groove, and its length is different at different nook closing members.The trocar (23) internal diameter is different with the external diameter of nook closing member (22).

The present invention has its specific function and effect, and its specific function and effect are: 1, specific function: specific function of the present invention is to make movingization of biopsy part operation half son; Can change the diameter of puncture needle and the stroke of puncture needle as required, have the function that a tool is used more.Use before the present invention carries out biopsy, the cell taking gun of at first sterilizing, under the sterile working, that takes off cell taking gun protects needle tubing (15), needle holder (17) and (16) is spurred to body of a gun handle (3) one ends, up to linking up with mutually with separately plate machine system respectively.The operator pushes the target tissue surface that live body needs biopsy with manpower with the puncture needle of cell taking gun, shown in Fig. 1-2 4; Percussion then, nook closing member (22) thrusts target tissue, shown in Fig. 1-2 5; Percussion again, the trocar (23) thrusts target tissue, shown in Fig. 1-2 6; The puncture needle of cell taking gun is extracted live body from target tissue, shown in Fig. 1-2 7.Moving and link up with mutually needle holder (16) with plate machine system (2) to body of a gun handle (3) one laybacks, promptly appear nook closing member (22) and get target tissue on the thing groove, take off target tissue and promptly finish a biopsy.It should be noted that the present invention in use, twice percussion is very short blanking time, is actually to pull once that the plate machine finishes.

2, effect: effect of the present invention is to have shortened the biopsy operating time, has simplified operating procedure, and learning and mastering improves the biopsy success rate easily.

The present invention can be achieved in that among Fig. 1, and the 1-body of a gun adopts metal or nonmetallic materials, uses mechanical single-piece work or Mould Machining to form, and plate machine system (2) is housed in the middle of the body of a gun (1).2-plate machine system adopts metal or nonmetallic sturdy material, makes cuboid, arc body, and the right angle body, semicircular bodies part lever, linking to each other or link to each other with miniature bearing with screw forms, and is fixed in the middle of the body of a gun (1).3-body of a gun handle, body of a gun handle (3) is whole or fixing in aggregates with screw with the body of a gun (1).Body of a gun handle (3) is a portion of the handle when doing biopsy.4-body of a gun male and female groove, body of a gun male and female groove (4) is positioned at the top of the body of a gun (1), is triangle or square male and female groove, and effect is fixedly connected rifle bolt (7).5-body of a gun baffle ring, body of a gun baffle ring (5) are positioned at top, the body of a gun (1) back in the below of rifle bolt (7), and its effect is to move after stoping spring (19).6-rifle bolt baffle plate, rifle bolt baffle plate (6) is positioned at last the place ahead of the body of a gun (1), link to each other with the body of a gun (1), about each one, can be in the activity of 0-360 ° of scope internal rotation, effect is to stop rifle bolt (7) reach.The 7-rifle bolt, rifle bolt (7) is positioned at topmost, is connected as a single entity with the body of a gun (1) with body of a gun male and female groove (4) and rifle bolt male and female groove (9).8-rifle bolt baffle plate groove, rifle bolt baffle plate groove (8) is positioned at the front lower place of rifle bolt (7), and rifle bolt baffle plate (6) is embedded in the rifle bolt baffle plate groove (8), and effect is fixing rifle bolt (7).9-rifle bolt motion male and female groove, rifle bolt motion male and female groove (9) are positioned at two inner edges of rifle bolt (7) below, and effect is that restriction rifle bolt (7) can only move forward and backward.10 and 12-needle holder baffle plate, needle holder baffle plate (10) (12) is positioned at the top of rifle bolt (7), and effect is the stroke that needle holder (16) (17) is regulated in restriction.11 and 13-needle holder stroke slot, needle holder stroke slot (11) and (13) are positioned at the rifle bolt top, and effect is that restriction needle holder (16) (17) can only be at 0-25mm with interior motion.Change the rifle bolt (7) of different strokes, the stroke that can make needle holder (16) (17) changes in the 0-25mm with being intended to.14-rifle bolt inwall step, rifle bolt inwall step (14) effect are to move after stoping needle holder (17) reach and spring (18).15-protects needle tubing, is connected with needle holder (16), and effect is the protection nook closing member (22) and the trocar (23); 16 and the 17-needle holder, needle holder (16) (17), the tapered screw of an end; the other end is " recessed " shape, and effect is to grip the nook closing member (22) and the trocar (23).The 18-spring, spring (18) one ends are arranged in " recessed " of needle holder (16), and the other end is positioned on the rifle bolt inwall step (14), promotes needle holder (16) reach when effect is percussion.The 19-spring, spring (19) one end is arranged in " recessed " of needle holder (17), and the other end is positioned on the body of a gun baffle ring (5), acts on identical with (18).20 and 21-taper hold-doun nut, taper hold-doun nut (20) (21), effect is the fixedly nook closing member (22) and the trocar (23).22 and the 23-nook closing member and the trocar, the nook closing member (22) and the trocar (23) are to enter the parts of live body to target tissue, and effect is to thrust target tissue and obtain target tissue.The puncture needle of 24-cell taking gun enters live body to the target tissue surface; The puncture needle nook closing member of 25-cell taking gun thrusts target tissue (percussion for the first time); The 26-trocar thrusts target tissue; Cut target tissue; The puncture needle of 27-cell taking gun is extracted target tissue.

Fig. 2-the 6th, the Knock-Down Component figure of Fig. 1.The present invention (18) (19) (22) (23) in Fig. 1, Fig. 5, Fig. 6 need with the metal material manufacturing other parts all available nonmetal (plastics, nylon etc.) material or metal material manufacturing.

Claims

1, a kind of medical tissue biopsy pistol (semiautomatic biopsy pistol), be by the body of a gun (1), plate machine system (2), body of a gun handle (3), body of a gun male and female groove (4), body of a gun baffle ring (5), rifle bolt baffle plate (6), rifle bolt (7), rifle bolt baffle plate groove (8), rifle bolt motion male and female groove (9), needle holder baffle plate (10) (12), needle holder stroke slot (11) (13), rifle bolt inwall step (14), protect needle tubing (15), needle holder (16) (17), spring (18) (19), taper hold-doun nut (20) (21), nook closing member (22), the trocar (23) is formed.It is characterized in that:

A, the body of a gun (1), plate machine system (2), body of a gun handle (3), rifle bolt baffle plate (6), rifle bolt (7) protects needle tubing (15), needle holder (16) (17), taper hold-doun nut (20) (21) is to be made by metal or nonmetallic materials.The body of a gun (1) is an integral body or two parts screw, and fixed by nut is closed and formed an integral body.Plate machine system (2) is linked to each other with screw with semicircle lever by rectangle, arc, square to form.Body of a gun handle (3) and the body of a gun (1) are whole or are fixed on the body of a gun (1) with screw.Rifle bolt baffle plate (6) is to be connected the tabular body of rectangle on the body of a gun with screw, bends to " L " shape, about each one.Rifle bolt (7) is the semicircle shape tubular bodies.Two inner edges of semicircle have rifle bolt motion male and female groove (9), rely on (9) to be connected with the body of a gun male and female groove (4) of the body of a gun (1).The rifle bolt top is provided with needle holder (16) (17) stroke slot (11) and (13), and needle holder baffle plate (10) (12), and its two ends diameter of the inwall of rifle bolt (7) is asymmetric, forms a rifle bolt inwall step (14).One end both sides of rifle bolt (7) outer wall have rifle bolt baffle plate groove (8).Protecting needle tubing (15) is tubulose, and the screw thread of one end inwall is taper, and needle holder (16) (17) one end is that taper has fissured arachnoid, and a corresponding end is a spill, and an end of spring (18) (19) lays respectively at wherein.Taper hold-doun nut (20) (21) is the screw one side that is spun on needle holder (16) (17).

B, spring (18) (19), nook closing member (22), the trocar (23) are to adopt the metal material manufacturing.

2, semiautomatic biopsy pistol according to claim 1 is characterized in that arbitrarily changing the rifle bolt (7) of different strokes, i.e. may command nook closing member (22), and the stroke of the trocar (23) and needle holder (16) (17) moves in 0-25mm; Arbitrarily change the needle holder (16) (17) of different-diameter, fixedly the trocar (23) of nook closing member of 1-2.5mm diameter (22) and nook closing member (22) outside.

3, PLM type semiautomatic biopsy pistol according to claim 1 is characterized in that: plate machine system (2) adopts twice percussion to obtain target tissue, that is: percussion, and nook closing member (22) thrusts target tissue; Percussion again, the trocar (23) thrusts target tissue and obtains tissue.