CN210121158U

CN210121158U - Endoscope puncture sampling needle for bronchoscope

Info

Publication number: CN210121158U
Application number: CN201920435008.9U
Authority: CN
Inventors: 杨阳; 吴丽娟; 蔡向敬
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2020-03-03
Anticipated expiration: 2029-04-01

Abstract

The utility model discloses a scope puncture sampling needle for bronchoscope relates to medical instrument technical field. It includes sheath pipe, sampling tube, sample syringe needle, its characterized in that: the rear end of the outer sheath tube is fixedly communicated with an installation cylinder; the upper side and the lower side of the mounting cylinder are both provided with through grooves along the front-back direction; a sampling tube is arranged in the mounting tube in a sliding manner; the upper side and the lower side of the rear part of the sampling tube are both fixed with a limiting block; the limiting blocks are in one-to-one corresponding sliding fit with the through grooves; the front end of the sampling tube is communicated and fixed with the rear end of the sampling tube; a negative pressure tube is fixedly sleeved on the rear side inside the sampling tube; a rubber plug is connected in the negative pressure pipe in a sliding way; an operating rod is fixed on the rubber plug; the mounting cylinder is provided with a sampling limiting mechanism. The utility model has the advantages that: it can be injectd the position of sample syringe needle, can adjust the home range of sample syringe needle according to the demand, the simple operation.

Description

Endoscope puncture sampling needle for bronchoscope

Technical Field

The utility model relates to the technical field of medical equipment.

Background

The bronchoscope is a flexible endoscope with an optical system and a mechanical operation system, is inserted through the mouth and nose of a patient, and directly inspects the diseased part of the lung, thereby carrying out various diagnosis and therapeutic operations on respiratory diseases. Be provided with sampling channel on the bronchoscope, the sampling needle can reach the diagnosis position through sampling channel, cuts behind a small amount of tissues and absorbs, realizes the sample effect to the pathological change tissue, examines in order to reach the diagnostic effect to the state of an illness through the tissue to the sample, plays important effect in modern respiratory internal medicine field. However, in the process of puncture sampling, the position of the sampling needle is not easy to be limited, so that the problem that the sampling needle is separated from the tissue puncture site or the puncture is too deep is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the technique that exists is not enough to the aforesaid, provides a scope puncture sampling needle for bronchoscope, and it can inject the position of sample syringe needle, can adjust the home range of sample syringe needle, the simple operation according to the demand.

The utility model adopts the technical proposal that: the utility model provides an scope puncture sampling needle for bronchoscope, includes sheath pipe, sampling tube, sample syringe needle, its characterized in that: the rear end of the outer sheath tube is fixedly communicated with an installation cylinder; the upper side and the lower side of the mounting cylinder are both provided with through grooves along the front-back direction; a sampling tube is arranged in the mounting tube in a sliding manner; the upper side and the lower side of the rear part of the sampling tube are both fixed with a limiting block; the limiting blocks are in one-to-one corresponding sliding fit with the through grooves; the front end of the sampling tube is communicated and fixed with the rear end of the sampling tube; a negative pressure tube is fixedly sleeved on the rear side inside the sampling tube; a rubber plug is connected in the negative pressure pipe in a sliding way; an operating rod is fixed on the rubber plug; the mounting cylinder is provided with a sampling limiting mechanism;

the sampling limiting mechanism comprises a front retaining ring, a positioning ring and a rear retaining ring which are sequentially sleeved outside the mounting cylinder from front to back; the inner diameters of the front retaining ring, the positioning ring and the rear retaining ring are equal and are all larger than the outer diameter of the mounting cylinder; the left side and the right side of the mounting cylinder are provided with action grooves along the front and back directions in a matching way; the action groove is of an arc structure; the left side and the right side of the inner ring wall of the front retaining ring, the positioning ring and the rear retaining ring are respectively fixed with a rubber block; the rubber blocks respectively correspond to the action grooves; the inner wall of the rubber block is in friction fit with the outer wall of the mounting cylinder; the positioning ring is coaxially corresponding to the sampling cylinder; an annular groove is coaxially matched and formed in the inner annular wall of the positioning ring; the limiting blocks are connected with the annular grooves in a sliding fit manner; the outer wall of the mounting cylinder is uniformly distributed with scale marks.

Further optimizing the technical scheme, the outer sheath tube of the endoscope puncture sampling needle for the bronchoscope is sleeved with a limiting lantern ring in a sliding manner; the limiting lantern ring is in threaded connection with a fastening bolt.

Further optimizes the technical proposal, and a blocking ball is fixed at the front end in the action groove of the endoscope puncture sampling needle for the bronchoscope.

The beneficial effects of the utility model reside in that:

1. the sampling tube is arranged in the mounting tube in a sliding manner, the upper side and the lower side of the rear part of the sampling tube are respectively fixed with a limiting block, the limiting blocks are in one-to-one corresponding sliding fit with the through grooves, the limiting blocks are in sliding fit with the annular grooves in the positioning rings, the sampling tube can be driven to slide through the movement of the positioning rings, so that the sampling needle head can move back and forth, and the tissue can be conveniently cut; the inner wall of the rubber block is in friction fit with the outer wall of the mounting cylinder, and the positions of the front retaining ring, the positioning ring and the rear retaining ring can be fixed through the friction action of the rubber block and the mounting cylinder; when the front retaining ring is fixed, the extended position of the sampling needle can be blocked and limited, when the rear retaining ring is fixed, the backward moving position of the sampling needle can be blocked and limited, and when the positioning ring is fixed, the sampling needle can be fixed; the rubber blocks respectively correspond to the action grooves, so that the front retaining ring, the positioning ring and the rear retaining ring can conveniently slide when the rubber blocks are positioned in the action grooves; the action inslot is the arc structure, can conveniently glue the piece and roll out from the action inslot.

2. The rubber plug can slide to generate negative pressure, so that the tissue sample can be sucked into the sampling tube through the sampling needle; scale marks are uniformly distributed on the outer wall of the mounting cylinder, so that the forward extending and backward moving distance of the sampling needle head can be accurately controlled; the limiting collar can be fixed on the outer sheath tube through the jacking action of the fastening bolt, and the extending length of the outer sheath tube can be limited in a blocking way through the limiting collar; the front end is fixed with and blocks the ball in the effect groove, can block the restriction to the preceding retaining ring, avoids the preceding retaining ring to follow the front position slippage of installation section of thick bamboo.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an exploded view of the sampling limiting mechanism.

In the figure, 1, an outer sheath; 2. a sampling tube; 3. a sampling needle; 4. mounting the cylinder; 5. a through groove; 6. a sampling tube; 7. a limiting block; 8. a negative pressure tube; 9. a rubber plug; 10. an operating lever; 11. a front baffle ring; 12. a positioning ring; 13. a rear baffle ring; 14. an action groove; 15. gluing blocks; 16. an annular groove; 17. scale lines; 18. a limiting lantern ring; 19. tightening the bolt; 20. blocking the ball.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, an endoscope puncture sampling needle for bronchoscope comprises an outer sheath tube 1, a sampling tube 2 and a sampling needle head 3, and is characterized in that: the rear end of the outer sheath tube 1 is fixedly communicated with an installation tube 4; the upper side and the lower side of the mounting cylinder 4 are both provided with through grooves 5 along the front-back direction; a sampling tube 6 is arranged in the mounting tube 4 in a sliding manner; the upper side and the lower side of the rear part of the sampling tube 6 are both fixed with a limiting block 7; the limiting blocks 7 are in one-to-one corresponding sliding fit with the through grooves 5; the front end of the sampling tube 6 is communicated and fixed with the rear end of the sampling tube 2; a negative pressure tube 8 is fixedly sleeved on the rear side inside the sampling tube 6; a rubber plug 9 is connected in the negative pressure pipe 8 in a sliding way; an operating rod 10 is fixed on the rubber plug 9; the mounting cylinder 4 is provided with a sampling limiting mechanism.

As shown in fig. 2, the sampling limiting mechanism comprises a front retaining ring 11, a positioning ring 12 and a rear retaining ring 13 which are sleeved outside the mounting barrel 4 from front to back in sequence; the inner diameters of the front retaining ring 11, the positioning ring 12 and the rear retaining ring 13 are equal and are all larger than the outer diameter of the mounting cylinder 4; the left side and the right side of the mounting cylinder 4 are provided with action grooves 14 along the front and back directions in a matching way; the action groove 14 is of an arc structure; the left side and the right side of the inner ring wall of the front retaining ring 11, the positioning ring 12 and the rear retaining ring 13 are respectively fixed with a rubber block 15; the rubber blocks 15 respectively correspond to the action grooves 14; the inner wall of the rubber block 15 is in friction fit with the outer wall of the mounting cylinder 4; the positioning ring 12 is coaxially corresponding to the sampling tube 6; an annular groove 16 is coaxially matched and arranged on the inner annular wall of the positioning ring 12; the limiting blocks 7 are connected with the annular groove 16 in a sliding fit manner; the outer wall of the mounting cylinder 4 is uniformly distributed with scale marks 17; a limiting lantern ring 18 is sleeved on the outer sheath tube 1 in a sliding manner; the limiting lantern ring 18 is in threaded connection with a fastening bolt 19; a stop ball 20 is fixed at the front end in the action groove 14.

When the outer sheath tube 1 is inserted into a patient body through a sampling channel of a bronchoscope, the outer sheath tube 1 is usually long, so that the inserted length of the outer sheath tube 1 needs to be limited in order to avoid the influence on sampling caused by the fact that the outer sheath tube is inserted too long into the patient body, the limiting lantern ring 18 can slide to a proper position on the outer sheath tube 1 and is fixed through the fastening bolt 19, the limiting lantern ring 18 can be blocked outside the sampling channel of the bronchoscope, and the length of the outer sheath tube 1 inserted into the patient body is limited; in the process that sheath pipe 1 stretches into, sample syringe needle 3 is whole to be withdrawn in sheath pipe 1, and its purpose is to cause the injury to the patient in order to avoid sample syringe needle 3 to expose, and at this moment the last rubber block 15 of holding ring 12 is in the state with the contact of installation section of thick bamboo 4 outer wall, has guaranteed sample syringe needle 3's fixity through frictional action.

When a sample is needed, firstly, the sampling needle 3 needs to extend out of the outer sheath tube 1, at the moment, the positioning ring 12 is rotated, the rubber block 15 slides into the action groove 14 respectively, the friction action between the rubber block 15 and the outer wall of the installation cylinder 4 is relieved, the positioning ring 12 can be easily pushed to move forwards, the positioning ring 12 drives the sampling cylinder 6 to move forwards in the installation cylinder 4, the sampling needle 3 can gradually extend forwards, after the sampling needle 3 extends out of the outer sheath tube 1 by a proper length (can be specifically quantized through the scale mark 17), the positioning ring 12 is rotated again, the rubber block 15 is in friction contact with the outer wall of the installation cylinder 4 again, the sampling needle 3 is fixed, and at the moment, the sampling needle 3 can be controlled to puncture into the corresponding tissue part needing sampling.

After the puncture is performed to a proper depth, the sampling needle 3 needs to be inserted back and forth to cut a next part of the tissue sample, and then the tissue sample is sucked into the sampling tube 2 under the action of negative pressure. In this process, in order to avoid the injury of the patient caused by the sampling needle 3 being pulled out of the penetrated tissue or inserted too deeply, the range of the sampling needle 3 to be inserted back and forth is limited. In the technical scheme, the front retaining ring 11 and the rear retaining ring 13 only need to be moved to proper positions and fixed through the friction action of the rubber block 15 and the outer wall of the mounting cylinder 4; at this moment, when the positioning ring 12 slides back and forth to drive the sampling needle 3 to perform the penetrating operation, due to the blocking of the positioning ring 12 by the front blocking ring 11 and the rear blocking ring 13, the extending and retracting distance of the sampling needle 3 is limited, thereby effectively avoiding the problem that the sampling needle 3 is separated from the tissues penetrated or is inserted too deeply.

Through the round trip interlude of sampling needle 3, after cutting next part tissue sample, pulling action bars 10 through the negative pressure effect, can inhale the sampling tube 2 with the tissue sample in, accomplishes the sample, in the sheath pipe 1 is all withdrawn with sampling needle 3 to the removal through holding ring 12 afterwards, can with the utility model discloses wholly take out from the patient is internal, later promote action bars 10, can be with tissue sample discharge (tissue sample is collected to common slide glass or sample collecting bottle) through the squeezing action of air, accomplish whole sample flow.

Claims

1. The utility model provides an scope puncture sampling needle for bronchoscope, includes sheath pipe (1), sampling tube (2), sample syringe needle (3), its characterized in that: the rear end of the outer sheath tube (1) is fixedly communicated with an installation tube (4); the upper side and the lower side of the mounting cylinder (4) are both provided with through grooves (5) along the front-back direction; a sampling tube (6) is arranged in the mounting tube (4) in a sliding manner; the upper side and the lower side of the rear part of the sampling cylinder (6) are both fixed with a limiting block (7); the limiting blocks (7) are in one-to-one corresponding sliding fit with the through grooves (5); the front end of the sampling tube (6) is communicated and fixed with the rear end of the sampling tube (2); a negative pressure tube (8) is fixedly sleeved on the rear side inside the sampling tube (6); a rubber plug (9) is connected in the negative pressure pipe (8) in a sliding way; an operating rod (10) is fixed on the rubber plug (9); the mounting cylinder (4) is provided with a sampling limiting mechanism;

the sampling limiting mechanism comprises a front retaining ring (11), a positioning ring (12) and a rear retaining ring (13) which are sequentially sleeved outside the mounting cylinder (4) from front to back; the inner diameters of the front retaining ring (11), the positioning ring (12) and the rear retaining ring (13) are equal and are all larger than the outer diameter of the mounting cylinder (4); the left side and the right side of the mounting cylinder (4) are provided with action grooves (14) along the front and back directions in a matching way; the action groove (14) is internally provided with an arc-shaped structure; the left side and the right side of the inner ring wall of the front retaining ring (11), the positioning ring (12) and the rear retaining ring (13) are respectively fixed with a rubber block (15); the rubber blocks (15) respectively correspond to the action grooves (14); the inner wall of the rubber block (15) is in friction fit with the outer wall of the mounting cylinder (4); the positioning ring (12) is coaxially corresponding to the sampling cylinder (6); an annular groove (16) is coaxially matched and arranged on the inner annular wall of the positioning ring (12); the limiting blocks (7) are connected with the annular groove (16) in a sliding fit manner; the outer wall of the mounting cylinder (4) is uniformly distributed with scale marks (17).

2. An endoscopic aspiration sampling needle for a bronchoscope according to claim 1, characterized in that: a limiting lantern ring (18) is sleeved on the outer sheath tube (1) in a sliding manner; the limiting lantern ring (18) is in threaded connection with a fastening bolt (19).

3. An endoscopic aspiration sampling needle for a bronchoscope according to claim 1, characterized in that: a blocking ball (20) is fixed at the front end in the action groove (14).