CN108789610B

CN108789610B - Extrusion type catheter perforating device

Info

Publication number: CN108789610B
Application number: CN201810719707.6A
Authority: CN
Inventors: 崔文波; 王瑞平; 马全建; 张利娜; 曹明卓; 贠勇; 安伟; 高勇; 邢彦君; 张军辉; 胡会琴; 王江龙; 程慧娟
Original assignee: XINXIANG HUAXI MEDICAL SANITARY MATERIALS CO Ltd
Current assignee: XINXIANG HUAXI MEDICAL SANITARY MATERIALS CO Ltd
Priority date: 2018-06-30
Filing date: 2018-06-30
Publication date: 2020-01-07
Anticipated expiration: 2038-06-30
Also published as: CN108789610A

Abstract

The invention provides an extrusion type catheter perforating device, which effectively solves the problems of low efficiency of perforating the side wall of a catheter, poor penetrating effect, no guarantee of product quality and high cost in the prior art; the technical scheme for solving the problem is that the device comprises an outer cylinder, wherein a first cylinder is arranged in the outer cylinder; the first cylinder is provided with a conduit, the outer cylinder is internally provided with a second cylinder, and an annular space is formed between the second cylinder and the outer cylinder; the first cylinder is provided with a first through hole, one end of the first through hole is provided with high-pressure gas, a first slide block is arranged in the first through hole, a second through hole is arranged on the second cylinder, a second slide block is arranged in the second through hole, an ejector rod is arranged in the second through hole, annular bulges are arranged in the annular intervals, the left sides of the annular bulges are inclined planes, the second slide block is provided with a blind hole, and a push plate is arranged in the blind hole; the pipe punching machine is ingenious in structure and novel in conception, greatly improves the pipe side wall punching efficiency, ensures the pipe penetration effect, effectively ensures the pipe punching quality, is low in cost, is easy to realize and is convenient to popularize.

Description

Extrusion type catheter perforating device

Technical Field

The invention relates to the technical field of production and manufacturing of sanitary materials, in particular to a punching device for an extrusion type guide pipe.

Background

In recent years, the negative pressure drainage technology is gradually mature, disposable negative pressure drainage dressing is produced at the same time, the negative pressure drainage consists of medical sponge and a catheter, wherein the catheter used in the negative pressure drainage is not provided with a side hole, the catheter can only drain from the end part of the catheter, medicines are not dispersed, the drainage effect is poor, and only a small part of the end part of the catheter can be inserted into the sponge and is extremely easy to separate from the sponge; the other catheter with the side hole can disperse the medicine from the side wall, so that the medicine can be fully acted on the wound, and the catheter can be deeply placed in the sponge and is not easy to fall off.

However, in the current technology for producing side holes on catheters, such as the document with the publication number CN 201823164U, the holes are punched by using a punching needle, but the following problems occur:

1. only one or one row can be pricked at one time, and the one row is distributed in one direction in a straight line mode, so that the catheter is inconvenient to move when the side holes with different diameters are required to be punched.

2. Because the material of pipe is flexible material, punches through the mode of pinprick, the back is taken out to the needle, and the puncture position is blocked up directly to the puncture position most probably, and the infiltration effect is very big to be reduced, blocks up in addition easily.

3. In this document, the catheter is pricked downwards by a needle, the catheter is directly pressed into two layers by excessive force, the two layers are directly punched, and the distance between the holes cannot be fixed, so that the product quality is directly influenced.

And a small part of scientific research institutions spend heavy gold on customizing the conduit for punching, so that the equipment is huge, the operation is inconvenient, the cost is high, and the popularization is difficult.

To this end, the present invention provides a punch device for a squeeze type catheter to solve the above problems.

Disclosure of Invention

Aiming at the situation, the invention provides the extrusion type duct punching device for overcoming the defects of the prior art, and effectively solves the problems of low duct side wall punching efficiency, poor permeation effect, no guarantee of product quality and high cost in the prior art.

The technical scheme for solving the problem is that the device comprises a horizontally placed cylindrical outer cylinder, wherein a first cylinder is arranged in the outer cylinder along the left-right direction, and the right end of the first cylinder extends out of the outer cylinder; the first cylinder is sleeved with a detachable conduit, the outer cylinder is internally provided with a second cylinder sleeved on the conduit, the left end of the first cylinder is fixed with the left end of the second cylinder, and an annular space is formed between the outer circular surface of the second cylinder and the inner side surface of the outer cylinder; the cylinder wall of the first cylinder is provided with a plurality of first through holes which are arranged along the radial direction of the first cylinder, one end of each first through hole, which is close to the center of the first cylinder, is connected with high-pressure gas, a first slide block which can slide along the first through hole is uniformly arranged in each first through hole, the end surface, which is far away from the center of the first cylinder, of each first slide block is provided with an annular cutting edge, the cylinder wall of the second cylinder is provided with a plurality of second through holes which are in one-to-one correspondence with the first through holes, each second through hole is internally provided with a second slide block which can slide along the second through hole, each second through hole is internally provided with a push rod which is coaxial with the second through hole, one end, which is close to the center of the second cylinder, of each push rod is fixed with the second slide block, the other end of each push rod extends out of the second through hole and is arranged in an annular space, a plurality of annular bulges are arranged in the annular; the lower end face of the second sliding block is a plane, a blind hole matched with the first sliding block is formed in the end face of one end, close to the first sliding block, of the second sliding block, and a push plate capable of sliding along the blind hole is arranged in the blind hole;

the outer cylinder push the second slider through the annular protrusion and tightly press the conduit on the first cylinder, then the first slider in the first through hole penetrates through the conduit under the action of high-pressure gas and enables the waste material to be placed in the corresponding blind hole, then the first through hole is decompressed to enable the first slider to reset into the first through hole, meanwhile, the push plate pushes the waste material into the conduit, the conduit is pulled out, and the waste material is discharged along with the conduit.

The invention has the advantages of ingenious structure and novel conception, greatly improves the efficiency of large holes on the side wall of the guide pipe, well ensures the permeation effect of the guide pipe, effectively ensures the punching quality of the guide pipe, has low cost, is easy to realize and is convenient to popularize.

Drawings

FIG. 1 is a front view of the present invention.

FIG. 2 is a cross-sectional view of the outer cylinder and the interior of the outer cylinder of the present disclosure.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic structural diagram of the first slider, the second slider and the push plate in the present invention.

Fig. 5 is an enlarged view at B in fig. 2.

FIG. 6 is a schematic structural view of the outer cylinder, the annular protrusion and the ring of the present invention.

Detailed Description

The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 6, the present invention includes a horizontally disposed cylindrical outer cylinder 1, a first cylinder 2 disposed in the left-right direction is disposed in the outer cylinder 1, and the right end of the first cylinder 2 extends out of the outer cylinder 1; the first cylinder 2 is sleeved with a detachable conduit, the outer cylinder 1 is internally provided with a second cylinder 3 sleeved on the conduit, the left end of the first cylinder 2 is fixed with the left end of the second cylinder 3, and an annular space is formed between the outer circular surface of the second cylinder 3 and the inner side surface of the outer cylinder 1; the cylinder wall of the first cylinder 2 is provided with a plurality of first through holes which are arranged along the radial direction of the first cylinder 2, one end of each first through hole, which is close to the center of the first cylinder 2, is connected with high-pressure gas, a first slide block 4 capable of sliding along the first through hole is uniformly arranged in each first through hole, the end surface, which is far away from the center of the first cylinder 2, of each first slide block 4 is provided with an annular cutting edge, the cylinder wall of the second cylinder 3 is provided with a plurality of second through holes which are in one-to-one correspondence with the first through holes, each second through hole is internally provided with a second slide block 5 capable of sliding along the second through hole, each second through hole is internally provided with a push rod 6 which is coaxial with the second through hole, one end, which is close to the center of the second cylinder 3, of each push rod 6 is fixed with the second slide block 5, the other end of each push rod 6 extends out of the second through hole and is arranged in an annular space, a plurality of annular bulges 7 are arranged in the annular spaces, the left sides; the lower end face of the second sliding block 5 is a plane, a blind hole matched with the first sliding block 4 is formed in the end face of one end, close to the first sliding block 4, of the second sliding block 5, and a push plate capable of sliding along the blind hole is arranged in the blind hole;

outer cylinder 1 make the ejector pin 6 in the second through-hole push second slider 5 tightly to press the pipe on first cylinder 2 through annular arch 7, later first slider 4 in the first through-hole runs through the pipe and makes the waste material arrange corresponding blind hole in under the high-pressure gas effect in, then first through-hole pressure release makes first slider 4 reset to first through-hole in, the push pedal pushes the waste material on the pipe simultaneously, pulls out the pipe, the waste material is discharged along with the pipe together.

In order to fix the left end of the first cylinder 2 and the left end of the second cylinder 3 together, the left end of the first cylinder 2 is provided with a vertical plate 9, and the left end of the first cylinder 2 and the left end of the second cylinder 3 are fixed together through the vertical plate 9.

In order to realize that the first sliding blocks 4 simultaneously move to one side far away from the center of the first cylinder 2 and simultaneously cut a plurality of parts of the conduit, the right end of the first cylinder 2 is sealed and is arranged on the right side of the outer cylinder 1, the first cylinder 2, the vertical plate 9 and the first sliding blocks form a closed cavity 8, and the cavity 8 is communicated with high-pressure gas.

In order to facilitate sleeving the guide pipe on the first cylinder 2 and seal the right end of the first cylinder 2, a screw rod 10 is inserted into the right end of the first cylinder 2, the screw rod 10 is in threaded connection with the first cylinder 2, a spherical bulge 11 is arranged at the right end of the screw rod 10, and the spherical bulge 11 is positioned at the right side of the first cylinder 2.

In order to realize that the second sliding blocks 5 simultaneously move to one side close to the center of the first cylinder 2 and compress the position of the conduit needing to be punched, the second through hole is internally provided with a tension spring, one end of the tension spring, which is far away from the first cylinder 2, is connected with the second through hole, the other end of the tension spring is connected with the second sliding block 5, one end of the ejector rod 6, which is arranged in the annular space, is kept in contact with the inclined plane on the annular bulge 7, and the outer cylinder 1 moves leftwards and enables the ejector rod 6 to push the second sliding block 5 downwards through the annular interval so as to compress.

For better perforation of the catheter, the cutting edges are arranged annularly along the outer edge of the first slider 4.

In order to realize inflation into the chamber 8, a fixed block 12 is arranged at the left end of the vertical plate 9, a vertical first channel 13 is arranged in the fixed block 12, a vertical second channel 14 is arranged at the right side of the first channel 13, the upper end of the first channel 13 is connected with the upper end of the second channel 14 to form a U shape with a downward opening, and the lower end of the second channel 14 is communicated with the chamber 8; a horizontal cylinder 16 is arranged on the left side of the vertical plate 9, a piston capable of sliding left and right is arranged in the cylinder 16, a piston rod 17 is arranged on the left side of the piston, and the lower end of the first channel 13 is communicated with the cylinder 16.

In order to achieve that, after the first slider 4 presses the pipe first against the first cylinder 2, the first slider 4 can only punch the pipe, the outer side edge of outer cylinder 1 on be fixed with ring 15, ring 15 left side has the annular plate 18 of suit on outer cylinder 1, there is some blind holes in the opening on fixed block 12, blind hole and second passageway 14 have the intersection, there is the third slider that can move about in the blind hole, the third slider has two, fix through the connecting rod between two third sliders, the diameter of connecting rod is less than the diameter of second passageway 14, the third slider that is located left blocks up second passageway 14, the third slider right-hand member that is located the right side is fixed with the horizontally flat pole, the flat pole right-hand member is fixed with annular plate 18, annular plate 18 moves left and can make the third slider move left and make second passageway 14 open, there is the sealing washer to make the outer fringe face of third slider closely laminate with the blind hole lateral wall between the lateral wall of third slider and blind hole.

In order to realize that the annular plate 18 moves leftwards, the third sliding block seals the second channel 14 and is convenient to operate by one hand, the third cylinder 19 is sleeved at the left end of the outer cylinder 1, the left end of the third cylinder 19 is fixed with the vertical plate 9, the third cylinder 19 is in threaded connection with the outer cylinder 1, a pressure spring is sleeved on the outer cylinder 1, one end of the pressure spring is in contact with the third cylinder 19, and the other end of the pressure spring is in contact with the annular plate 18.

In order to enable the waste to be detached together with the guide pipe, a pressure spring is arranged in a blind hole in the second sliding block 5, one end of the pressure spring is connected with the bottom of the blind hole, and the other end of the pressure spring is connected with a push plate.

For convenient placement, the lower end of the outer cylinder 1 is provided with a flat plate 20 which is horizontally placed, a plurality of vertical upright rods are fixed on the flat plate 20, and the upper ends of the upright rods are fixed with the third cylinder 19; the lower end of the fixing block 12 is fixed with a plurality of vertical upright posts, and the lower ends of the upright posts are fixed with the flat plate 20.

It is noted that, in the initial state, the second channel 14 is blocked by the third slider located on the left side; the diameter of the first through hole is smaller than that of the second through hole, a tension spring is arranged in the first through hole, one end of the tension spring is connected with one end of the first sliding block 4 close to the center of the first cylinder 2, and the other end of the tension spring is connected with one end of the first through hole close to the first cylinder 2; the first movable block and the sliding hole are kept sealed all the time, and a sealing ring can be added, which is similar to the structure of a piston in a hydraulic cylinder; in the invention, if the cost and the space are not considered, each first through hole can be communicated with high-pressure gas through a hose, but the invention is troublesome, time-consuming and labor-consuming, is not suitable for manual operation, and can realize that the end part of the first sliding block 4 is level with the outer circular surface of the first cylinder 2 in a natural state.

When the device is used, the left end of a conduit needing to be punched is sleeved on the second cylinder 3, the conduit is slid leftwards, the conduit is placed in the annular interval between the first cylinder 2 and the second cylinder 3, at the moment, the outer cylinder 1 is screwed to enable the outer cylinder 1 to move towards one side close to the vertical plate 9, the outer cylinder 1 enables the ejector rod 6 to move towards one side close to the first cylinder 2 through the annular bulge 7 and presses the conduit on the outer circular surface of the first cylinder 2, meanwhile, the outer cylinder 1 pushes the annular plate 18 to move leftwards through the circular ring 15, the annular plate 18 enables the third sliding block to move leftwards through the flat rod to enable the second channel 14 to be opened, the screwing of the outer cylinder 1 is stopped, then, the piston rod 17 is pushed rightwards to enable the piston to move rightwards to enable gas in the air cylinder 16 to enter the cavity 8 through the first channel 13 and the second channel 14 in sequence, the first sliding block 4 moves towards one side far away from the center of the first cylinder 2 under the, and the catheter is gradually pressed, and the air is continuously inflated into the cavity 8, so that the knife edge on the first sliding block 4 punches the hole on the side wall of the catheter, and the hole punching is finished at the moment.

After the punching is finished, the piston rod 17 is pulled to move leftwards, the gas in the cavity 8 flows back into the cylinder 16 through the first channel 13 and the second channel 14, the air pressure in the cavity 8 is reduced, the first sliding block 4 is separated from the blind hole in the second sliding block 5, and the push plate in the blind hole pushes the waste material which is just generated to the original position on the guide pipe to wait for being pulled out together with the guide pipe; then, the outer cylinder 1 is reversely screwed to enable the outer cylinder 1 to move towards one side far away from the vertical plate 9, the annular plate 18 pulls the third sliding block to move rightwards through the flat rod under the action of the pressure spring and seals the second channel 14 to prepare for the next cycle, meanwhile, the ejector rod 6 drives the second sliding block 5 to move towards one side far away from the first cylinder 2 under the action of the tension spring, the pushing plate pushes the waste materials generated by punching just now into the original position of the pushing plate, finally, the guide pipe is pulled rightwards, the waste materials generated by punching are pulled out together with the guide pipe, and the punching of the next guide pipe can be carried out.

The invention has the outstanding advantages that:

1. the invention utilizes air pressure to realize the punching of the medical catheter, has higher efficiency compared with the traditional punching mode by using a needle prick, is not easy to block after being punched and controlled, and ensures the permeation efficiency.

2. In the invention, the guide pipe is tightly pressed on the cylinder by the second sliding block 5, so that the guide pipe is cut by the cutting edge on the first sliding block 4, the tearing phenomenon of the punching part of the guide pipe is avoided, and burrs cannot be generated on the punching part.

3. In the punching process, quantitative punching of the catheter can be realized, namely the number of the holes around the catheter can be singular or even, the number of the holes is not limited, and the distance between every two holes can be designed and manufactured according to the requirement.

4. The invention ensures the consistency of the punching quality as much as possible in the process of emptying the gallery, is not easy to generate quality fluctuation and is convenient for managing the product quality.

5. According to the invention, repeated operation is facilitated, the required hole can be punched on the side wall of the conduit by twisting the outer cylinder 1 and then pushing the piston rod 17 rightwards, the operation is convenient and fast, the implementation is easy, the popularization is easy, the labor amount of manpower is greatly reduced, and an important way is provided for further automation.

6. The invention has low cost, is suitable for various enterprises and public institutions, is suitable for small-batch production, and has small labor amount and obvious effect.

Claims

1. The extrusion type catheter perforating device is characterized by comprising a horizontally-placed cylindrical outer cylinder (1), wherein a first cylinder (2) arranged along the left-right direction is arranged in the outer cylinder (1), and the right end of the first cylinder (2) extends out of the outer cylinder (1); the first cylinder (2) is sleeved with a detachable conduit, the outer cylinder (1) is internally provided with a second cylinder (3) sleeved on the conduit, the left end of the first cylinder (2) is fixed with the left end of the second cylinder (3), and an annular space is formed between the outer circular surface of the second cylinder (3) and the inner side surface of the outer cylinder (1); the wall of the first cylinder (2) is provided with a plurality of first through holes which are radially arranged along the first cylinder (2), one end of each first through hole, which is close to the center of the first cylinder (2), is connected with high-pressure gas, each first through hole is internally provided with a first sliding block (4) which can slide along the first through hole, the end surface, which is far away from the center of the first cylinder (2), of each first sliding block (4) is provided with an annular cutting edge, the wall of the second cylinder (3) is provided with a plurality of second through holes which are in one-to-one correspondence with the first through holes, each second through hole is internally provided with a second sliding block (5) which can slide along the second through hole, each second through hole is internally provided with a mandril (6) which is coaxial with the second through hole, one end, which is close to the center of the second cylinder (3), of the mandril (6) is fixed with the second sliding blocks (5), the other end of the mandril (6) extends out of the second through hole and is, the left side of the annular bulge (7) is an inclined surface, and the outer cylinder (1) moves leftwards to enable the ejector rod (6) to move towards one side close to the center of the second cylinder (3) through the annular bulge (7); the lower end face of the second sliding block (5) is a plane, a blind hole matched with the first sliding block (4) is formed in the end face of one end, close to the first sliding block (4), of the second sliding block (5), and a push plate capable of sliding along the blind hole is arranged in the blind hole;

outer cylinder (1) make ejector pin (6) in the second through-hole push second slider (5) through annular arch (7) and sticis the pipe on first cylinder (2), later first slider (4) in the first through-hole run through the pipe and make the waste material arrange corresponding blind hole in under the high-pressure gas effect in, then first through-hole pressure release makes first slider (5) reset to first through-hole in, the push pedal pushes the waste material on the pipe simultaneously, pull out the pipe, the waste material is discharged along with the pipe together.

2. The catheter perforating device as claimed in claim 1, characterized in that the left end of the first cylinder (2) has a riser (9), and the left end of the first cylinder (2) and the left end of the second cylinder (3) are fixed together via the riser (9).

3. The extrusion type pipe perforating device as claimed in claim 2, wherein the right end of the first cylinder (2) is sealed and is arranged on the right side of the outer cylinder (1), the first cylinder (2), the vertical plate (9) and the plurality of first sliding blocks form a closed chamber (8), and the chamber (8) is communicated with high-pressure gas; the right end of the first cylinder (2) is inserted with a screw (10), the screw (10) is in threaded connection with the first cylinder (2), the right end of the screw (10) is provided with a spherical bulge (11), and the spherical bulge (11) is positioned on the right side of the first cylinder (2); the second through hole in have a extension spring, the one end and the second through hole connection that first drum (2) were kept away from to the extension spring, the extension spring other end is connected with second slider (5), one end and the inclined plane on annular bulge (7) that annular space was arranged in to ejector pin (6) keep in contact, outer cylinder (1) removes to the left and makes ejector pin (6) promote second slider (5) downwards and compress tightly the pipe through annular interval.

4. The punching device for the extrusion type guide pipe as claimed in claim 3, wherein a fixed block (12) is arranged at the left end of the vertical plate (9), a vertical first channel (13) is arranged in the fixed block (12), a vertical second channel (14) is arranged at the right side of the first channel (13), the upper end of the first channel (13) is connected with the upper end of the second channel (14) to form a U shape with a downward opening, and the lower end of the second channel (14) is communicated with the cavity (8); a horizontal cylinder (16) is arranged on the left side of the vertical plate (9), a piston capable of sliding left and right is arranged in the cylinder (16), a piston rod (17) is arranged on the left side of the piston, and the lower end of the first channel (13) is communicated with the cylinder (16); outer cylinder (1) on the outside limit be fixed with ring (15), there is annular plate (18) of suit on outer cylinder (1) ring (15) left side, there is the opening to some blind holes on fixed block (12), the blind hole has alternately with second passageway (14), there is the third slider that can move about in the blind hole, the third slider has two, it is fixed through the connecting rod between two third sliders, the diameter of connecting rod is less than the diameter of second passageway (14), it blocks up second passageway (14) to be located left third slider, it is fixed with the horizontally flat pole to be located the third slider right-hand member on right side, the flat pole right-hand member is fixed with annular plate (18), annular plate (18) move left and can make third slider move left and make second passageway (14) open, it has the sealing washer to make the outer fringe face of third slider closely laminate with the blind hole lateral wall to have between the lateral wall of third slider and blind hole.

5. The extrusion type pipe perforating device according to claim 4, wherein a third cylinder (19) is sleeved at the left end of the outer cylinder (1), the left end of the third cylinder (19) is fixed to the vertical plate (9), the third cylinder (19) is in threaded connection with the outer cylinder (1), a pressure spring is sleeved on the outer cylinder (1), one end of the pressure spring is in contact with the third cylinder (19), and the other end of the pressure spring is in contact with the annular plate (18).

6. The extrusion type guide pipe perforating device according to claim 1, wherein a pressure spring is arranged in the blind hole in the second slide block (5), one end of the pressure spring is connected with the bottom of the blind hole, and the other end of the pressure spring is connected with the push plate.

7. The catheter perforating device as claimed in claim 1, characterized in that the outer cylinder (1) has a horizontally disposed plate (20) at its lower end, a plurality of vertical uprights being fixed to the plate (20), the upper ends of the uprights being fixed to the third cylinder (19); the lower end of the fixing block (12) is fixed with a plurality of vertical upright posts, and the lower ends of the upright posts are fixed with the flat plate (20).