CN2115078U

CN2115078U - Biopsy apparatus for pleura and peritonaeum

Info

Publication number: CN2115078U
Application number: CN 92203850
Authority: CN
Inventors: 燕相山
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-10
Filing date: 1992-03-10
Publication date: 1992-09-09

Abstract

The utility model relates to a biopsy apparatus for pleuroperitoneum, particularly used for a medical treatment and a disease diagnosis, which is mainly composed of an external trocar 42, an internal needle 41 and a polarizing means, wherein, the external trocar comprises an external needle stand, a hollow needle and a faucet, the internal needle comprises an internal needle core and an internal needle stand, the inner needle core is positioned in the hollow needle, and a positioning device is arranged between the hollow needle and the internal needle core. By using the biopsy apparatus, the water outlet tap is connected with a syringe. The utility model has the advantages that the utility model takes out the pleuroperitoneum safely and accurately, overcomes the defects of damaging the organs in the pleuroperitoneum and pneumothorax existing in the prior art, and popularizes the technology of the biopsy for pleuroperitoneu.

Description

Biopsy apparatus for pleura and peritonaeum

This utility model relates to the employed biopsy device of medical diagnosis disease, is particularly suitable for pleura or peritoneal biopsy and uses.

For agnogenic pleura or peritoneum pathological changes, be difficult to sometimes make correct diagnosis only according to chemical examination and imaging examination, be a kind of of great value diagnostic method and carry out pathological examination by pleura or peritoneal biopsy.Nineteen fifty-five at first is used for biopsy of pleura the diagnosis of tuberculous pleural effusion by people such as DeFrancis, and the technology of this kind biopsy is afterwards at home and abroad used day by day and increased, and becomes one of important means of diagnosis pleura or peritoneum pathological changes gradually.Up to now, carry out pleura or peritoneal biopsy and use Cope and Abrams puncture needle mostly, domestic puncture needles that adopt improvement or more with the replacement of threading a needle of Vim Silverman liver.Present normally used biopsy needle is formed (Fig. 1) by the trocar 1, nook closing member 2 and the hook end biopsy nook closing member 3 of stainless steel.The trocar 1 is a hollow needle, and nook closing member 2 and hook end biopsy nook closing member 3 all can insert in the trocar 1 hollow and matched in clearance with it.Nook closing member 2 has the cylinder on an inclined-plane for front end, and nook closing member 3 is a cylinder, and the groove 4 of band instrument bevel is arranged on the cylinder appropriate location, is used to hook up pleura.Now will use this biopsy needle to carry out the biopsy of pleura operating process is described below: after (one) will insert the thoracic cavity with the trocar 1 of nook closing member 2, pin end inclined-plane remains upwards, extract nook closing member 2, should see that hydrothorax overflows this moment, slowly dial and move back with being about to sleeve pipe, up to hydrops just stopped excessive till, show promptly that the sleeve pipe front end face is close to the parietal pleura face this moment.(2) hook end biopsy nook closing member 3 is inserted the trocar 1 hollow in, nook closing member 3 total lengths push, its front end must exceed the trocar and enter the thoracic cavity.And then nook closing member 3 slowly retreated, promptly end when the power that is hampered, show that the instrument bevel of end slots 4 has hooked pleura before the nook closing member 3, push the trocar 1 and rotate 360 ° and together extract in company with nook closing member 3 to the thoracic cavity this moment.(3) with fine needle the piece of tissue in the groove 4 and the trocar is chosen, carried out pathologic finding.By above operation as seen, this biopsy needle has following tangible significant deficiency.First: puncturing to have certain operating experience.Inserting needle is crossed deeply then easy damaged internal organs; Second: take out nook closing member 2 by the trocar 1 and insert in the process of nook closing member 3, often have gas to enter the thoracic cavity and cause pneumothorax.The the 3rd: can not when taking out hydrothorax, carry out biopsy of pleura simultaneously; The the 4th: facts have proved that the groove 4 of nook closing member 3 can not take out pleura sometimes reliably.Above-mentioned defective mainly because the structural shortcoming of this class biopsy needle causes, has influenced accuracy, reliability and the safety of biopsy technology, makes pleura and peritoneal biopsy technology fail so far to popularize.

The purpose of this utility model is to design a kind of novel pleuroperitoneum biopsy device, with existing biopsy needle relatively, require easy and simple to handlely, grasp easily, safe and reliable.

A kind of pleuroperitoneum biopsy device described in the utility model comprises the positioner of overcoat bobbin 42, interior pin 41 and definite

overcoat bobbin

42 and 41 relative positions of interior pin.Interior pin 41 moves in the endoporus of the trocar 42 outside.Overcoat bobbin 42 is the integral body that hollow needle 43, outer needle stand 44 and faucet 48 are formed, outer needle stand 44 has an inner chamber 58 that is communicated with the endoporus of faucet 48 and hollow needle 43 respectively, hollow needle 43 front ends are for ease of the inclined-plane 57 of puncture human body, breach 55 outside one is arranged on hollow needle 43 appropriate locations, the side of the outer breach 55 of close hollow needle 43 front ends is barb-shaped, barb tilts towards the opposite direction of hollow needle front end, and becoming acute angle less than 90 ° with the axis of hollow needle 43, another side of outer breach 55 is roughly parallel with barb-shaped side.Interior pin 41 is the integral body that interior nook closing member 46 and interior needle stand 47 are formed, interior nook closing member 46 is a hollow needle, on the plunger 59 of interior needle stand 47, radial through holes 49 is arranged, open-work 49 is communicated with the endoporus of interior nook closing member 46, interior nook closing member 46 front ends are tack, on interior nook closing member 46 appropriate locations, breach 56 in is arranged, side apart from interior nook closing member 46 front ends interior breach 56 far away is barb-shaped, the barb direction of nook closing member 46 front ends inwardly tilts, and becoming acute angle less than 90 ° with the axis of interior nook closing member 46, another side of interior breach 56 is roughly parallel with barb-shaped side.The plunger 59 of interior needle stand 47 is arranged in the inner chamber 58 of outer needle stand 44, is matched in clearance between the two, has passage 50 to be communicated with between the inner chamber 58 of open-work 49 and outer needle stand 44.This positioner is by lead 54, puncturing hole 51, suction eye 52, biopsy hole 53 constitutes, in lead 54 is located at needle stand 47 and outer needle stand 44 both one of boss on, puncturing hole 51, suction eye 52, in biopsy hole 53 is located on both central another boss of needle stand 47 and outer needle stand 44, puncturing hole 51, suction eye 52, it is on the same center circle in the center of circle that the centrage of biopsy hole 53 and lead 54 all is positioned at nook closing member 46 axis, suction eye 52 is open-work with biopsy 53, angle is approximate 180 ° between the two, lead 54 and suction eye 52, matched in clearance is adopted in biopsy hole 53, puncturing hole 51 is a blind hole, breach 55 outside making between suction eye 52 and biopsy hole 53, interior breach 56 all is in the optional position of closed state.The operating position is depended in the position of lead 54, when lead 54 is positioned at puncturing hole 51, interior nook closing member 46 front end face tack are reduced within the inclined-plane 57 of hollow needle 43, be arranged in the open-work in suction eye 52 and biopsy hole 53 when lead 54, interior nook closing member 46 front end faces stretch out the front end of hollow needle 43, aim in the biopsy hole 53 when lead 54, and outer breach 55 and interior breach 56 are in overlapping operating position, when lead 54 enters in the suction eye 52, become approximate 180 ° of angles between outer breach 55 and the interior breach 56.For the purpose of the operation of being more convenient for, on the boss of needle stand 47, suction eye, biopsy hole, puncturing hole all are located on the boss of outer needle stand 44 in preferably lead 54 being installed in.It is the operating process when utilizing pleuroperitoneum biopsy device described in the utility model to cut pleuroperitoneum below: (1) puncture position (accompanying drawing 2).The faucet 48 of this biopsy device is connected with latex tubing, and the latex tubing other end is connected with syringe.Lead 54 is aimed at puncture blind hole 51 and is compressed, and nook closing member 46 front end tack contract in the inclined-plane 57 of hollow needle 43 in this moment, and interior nook closing member 46 punctures outer breach 55 sealings of hollow needle 43.After needle point thrust the breast abdominal skin, pull syringe bolt made the interior negative pressure that forms of biopsy device, continues the puncture inserting needle, when hollow needle 43 tips exactly enter splanchnocoel, the liquid sucking-off is arranged just, therefore avoids crossing the dark internal organs that damage because of inserting needle.(2) draw water the position (accompanying drawing 3).Pin 41 in the rotation makes lead 54 aim at suction eye 52 and pushes, and nook closing member 46 front end tack stretch out outside the inclined-plane of hollow needle 43 in this moment, to avoid damaging visceral pleura or abdomen internal organs.This moment, radial through holes 49 directly was communicated with faucet 48 endoporus, can extract a certain amount of ascites pleural fluid out according to the needs of diagnosis or treatment.(3) biopsy position (accompanying drawing 4).Lead 54 is withdrawn into the puncture position from suction eye, again with interior pin 41 Rotate 180s °, make lead 54 aim at biopsy hole 53, this moment inside and

outside pin breach

55,56 overlapping open in the same way, biopsy device integral body is pulled outwardly, when resistance sense occurring, the barb on the outer breach 55 has hooked pleuroperitoneum and is fixing.Draw the syringe pintle this moment, form negative pressure in the biopsy device, the pleuroperitoneum tissue is inhaled on breach, make it further fixing, prevent slippage.Lead is pushed biopsy hole 53, utilize the relative motion of the hook end on the inside and

outside breach

56,55 that pleuroperitoneum is downcut, and be enclosed in the endoporus of interior nook closing member 46.(4) extract the biopsy device.Biopsy device integral body is extracted, return to the biopsy position, the pleuroperitoneum tissue hook that will downcut with crochet hook goes out, and send pathologic finding after placing 10% formalin internal fixation.

Accompanying drawing 1 existing biopsy needle figure

One of accompanying drawing 2 a kind of pleuroperitoneum biopsy device installation diagrams described in the utility model (puncture position)

Two (positions of drawing water) of accompanying drawing 3 a kind of pleuroperitoneum biopsy device installation diagrams described in the utility model

Three (biopsy positions) of accompanying drawing 4 a kind of pleuroperitoneum biopsy device installation diagrams described in the utility model

Accompanying drawing 5 overcoat bobbin installation diagrams

Pin installation diagram in the accompanying drawing 6

The A of accompanying drawing 7 accompanying drawings 5 is to view

The utility model has the advantages that:

(1) regularized operation. Position relationship between GPRS lead 54 and puncturing hole, suction eye, biopsy hole just can accurately puncture safely, draw water and the operation of biopsy.

(2) success rate of raising biopsy device.Utilize the breach on hollow needle and the interior nook closing member and utilize the biopsy device to be connected to make to form negative pressure in the biopsy device, just can take out pleuroperitoneum reliably, accurately with syringe.

(3) handling safety.Interior nook closing member front end is a tack, and when drawing water or biopsy when interior nook closing member is pushed, tack exceeds the hollow needle front end, can avoid the sharp-pointed inclined-plane of hollow needle front end that the internal organs in the breast abdomen are caused damage.

(4) accomplish good sealing property easily between interior nook closing member external diameter and the hollow needle endoporus, keep away face existing various biopsy needles must extract nook closing member and could insert the biopsy nook closing member and cause the high critical defect of pneumothorax incidence rate.

(5) can when taking out ascites pleural fluid, carry out the pleuroperitoneum biopsy.

The utility model will be further described below in conjunction with instantiation:

A kind of pleuroperitoneum biopsy device described in the utility model comprises overcoat bobbin 42, interior pin 41.

Overcoat bobbin 42 is by hollow needle 43, outer needle stand 44 and faucet 48 are formed, outer needle stand is made with stainless steel material, hollow needle 43 usefulness thin-wall stainless steels are made, with welding method outer needle stand and hollow needle are fixed into integral body, hollow needle external diameter 2.5mm, thickness of pipe wall 0.25mm, length 71mm, front end is that the inclined-plane is so that puncture procedure, inclined-plane and hollow needle centrage angle are less than 45 °, with 20-30 ° is good, and outer breach 55 is arranged on the hollow needle, and outer breach 55 degree of depth are 1/2 of hollow needle external diameter, the breach center is from the about foremost 8mm of hollow needle, the about 3mm of outer notch length, it is 45-60 ° that the side of barb and the angle of hollow needle axis are arranged on the outer breach, two parallel sided of outer breach.Faucet is also made with stainless steel material, with tight fit or welding method faucet 48 is embedded in the outer needle stand 44 corresponding holes, and faucet 48 internal diameters are 1.5mm.The intracavity diameter 8mm of outer needle stand 44, dark 18mm, external diameter 11mm, upper boss diameter 18mm, the aperture that is connected with faucet is 4mm, faucet exposes the outer length 8mm of hollow needle.

Interior pin 41 is made up of interior nook closing member 46 and interior needle stand 47, interior nook closing member is made with thin-wall stainless steel, interior needle stand 48 usefulness stainless steel materials are made, with welding method interior nook closing member and interior needle stand are fixed into integral body, interior nook closing member 46 external diameters are 2mm, adopt matched in clearance, thickness of pipe wall 0.25mm, length 75mm with the hollow needle internal diameter, front end is a tack, stab internal organs when preventing work, interior breach 56 is arranged on the interior nook closing member, interior notch depth is 1/2 of an interior nook closing member external diameter, the breach center is from interior nook closing member front end tack 3-4mm, interior notch length 3-4mm, it is 40-45 ° that the side of barb and the angle of interior nook closing member axis are arranged on the interior breach, two parallel sided of interior breach, the plunger of interior needle stand 47 and outer needle stand inner chamber matched in clearance, diameter of plunger is 8mm, long 17mm, upper boss diameter 18mm.Plunger base has radial through holes 49, and the open-work diameter equates that with interior nook closing member internal diameter and faucet internal diameter radial through holes is communicated with interior nook closing member endoporus.

The lead diameter 1.5mm of positioner, stroke 4mm, in being installed in tight fit on the boss of needle stand, suction eye 52, biopsy hole 53 process on the boss of needle stand outside, are the open-work of diameter 1.5mm, and with lead 54 matched in clearance, angle is 180 ° between two holes.Puncturing hole 51 is the blind hole of 1mm with the tangent degree of depth of suction eye.It is that the center of circle, radius are on the concentric circular of R6.5mm that lead, puncturing hole, suction eye, biopsy hole all are in biopsy device center.

Claims

1, a kind of pleuroperitoneum biopsy device comprises overcoat bobbin 42 and interior pin 41, and interior pin 41 moves in the endoporus of the trocar 42 outside, it is characterized in that:

(1) 41 on the trocar 42 and interior pin also have the positioner of determining overcoat bobbin 42 and 41 relative positions of interior pin outside,

(2) overcoat bobbin 42 is the integral body that hollow needle 43, outer needle stand 44 and faucet 48 are formed, outer needle stand 44 has an inner chamber 58 that is communicated with the endoporus of faucet 48 and hollow needle 43 respectively, hollow needle 43 front ends are inclined-plane 57, breach 55 outside one is arranged on hollow needle 43 appropriate locations, the side of the outer breach 55 of close hollow needle 43 front ends is barb-shaped, barb tilts towards the direction opposite with the hollow needle front end, and becomes the acute angle less than 90 ° with the axis of hollow needle 43

(3) interior pin 41 is the integral body that interior nook closing member 46 and interior needle stand 47 are formed, interior nook closing member 46 is a hollow needle, on the plunger 59 of interior needle stand 47, radial through holes 49 is arranged, open-work 49 is communicated with the endoporus of interior nook closing member 46, and interior nook closing member 46 front ends are tack, and an interior breach 56 is arranged on interior nook closing member 46 appropriate locations, side apart from interior nook closing member 46 front ends interior breach 56 far away is barb-shaped, the barb direction of nook closing member 46 front ends inwardly tilts, and becomes the acute angle less than 90 ° with the axis of interior nook closing member 46

(4) plunger 59 of interior needle stand 47 is arranged in the inner chamber 58 of outer needle stand 44, is matched in clearance between the two, has passage 50 to be communicated with between the inner chamber 58 of open-work 49 and outer needle stand 44.

2, a kind of pleuroperitoneum biopsy device according to claim 1 is characterized in that:

(1) positioner is made of lead 54, puncturing hole 51, suction eye 52, biopsy hole 53,

(2) in lead 54 is located at needle stand 47 and outer needle stand 44 both one of boss on, in puncturing hole 51, suction eye 52, biopsy hole 53 are located on both central another boss of needle stand 47 and outer needle stand 44,

(3) all to be positioned at nook closing member 46 axis be on the same center circle in the center of circle for puncturing hole 51, suction eye 52, biopsy hole 53 and lead 54 centrages,

(4) suction eye 52 is open-work with biopsy hole 53, angle is approximate 180 ° between the two, lead 54 adopts matched in clearance with suction eye 52, biopsy hole 53, puncturing hole 51 is a blind hole, breach 55, interior breach 56 all are in the optional position of closed state outside making between suction eye 52 and biopsy hole 53

(5) operating position of biopsy device is depended in the position of lead 54, when lead 54 is positioned at puncturing hole 51, interior nook closing member 46 front end face tack are reduced within the inclined-plane 57 of hollow needle 43, be arranged in the open-work in suction eye 52 and biopsy hole 53 when lead 54, interior nook closing member 46 front end faces stretch out the front end of hollow needle 43, when lead 54 is aimed in the biopsy hole 53, outer breach 55 and interior breach 56 are in overlapping operating position, when lead 54 is arranged in suction eye 52, become approximate 180 ° of angles between outer breach 55 and the interior breach 56.

3, a kind of pleuroperitoneum biopsy device according to claim 2 is characterized in that: lead 54 is installed on the boss of interior needle stand 47, suction eye, biopsy hole, and puncturing hole all is located on the boss of outer needle stand 44.