CN107596458B - Negative pressure drainage strip and perforating machine for sponge strip of negative pressure drainage strip - Google Patents
Negative pressure drainage strip and perforating machine for sponge strip of negative pressure drainage strip Download PDFInfo
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- CN107596458B CN107596458B CN201710670758.XA CN201710670758A CN107596458B CN 107596458 B CN107596458 B CN 107596458B CN 201710670758 A CN201710670758 A CN 201710670758A CN 107596458 B CN107596458 B CN 107596458B
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Abstract
The invention aims to provide a negative pressure drainage strip with uniform drainage and a sponge strip not easy to fall off, and a perforating machine for perforating the sponge strip of the negative pressure drainage strip. The negative pressure drainage strip is composed of a sponge strip and a drainage tube, and drainage holes are uniformly formed in the side wall of the drainage tube; the sponge strip is provided with a through hole; the key point is that the head end of the through hole is of a gradually-expanding bell mouth-shaped structure; the drainage tube is positioned in the through hole, and the shape of the drainage tube is in accordance with that of the through hole; the tail end of the drainage tube is exposed out of the sponge strip. The perforating machine can automatically drill a through hole with one end part of the through hole in a gradually-expanded horn-mouth-shaped structure on the sponge strip, and the negative pressure drainage strip manufactured by adopting the sponge strip not only can uniformly drain at each position, but also can prevent the sponge strip on the negative pressure drainage strip from falling off when the negative pressure drainage strip is pulled out of drainage positions such as a fistula of a patient.
Description
Technical Field
The invention belongs to the technical field of medical appliance manufacturing, and particularly relates to a negative pressure drainage strip and a perforating machine for perforating a sponge strip of the negative pressure drainage strip.
Background
Vacuum Sealing Drainage (VSD) refers to a technique originally created by WFleischman doctors in Germany in the early 90 s of the 20 th century and used for soft tissue wound surfaces, and the technique utilizes medical foam to wrap a multi-side-hole Drainage tube and then place the Drainage tube into a Drainage area, and then utilizes a permeable adhesive film to seal the Drainage area so as to isolate the Drainage area from the outside, and a high negative pressure source is connected to form a high-efficiency Drainage system. Negative pressure drainage requires a wound-protecting material as a carrier for drainage. The medical grade polyvinyl alcohol has the characteristics of convenient synthesis, safety, low toxicity, easy control of product quality, low price, convenient use and the like. The medical polyvinyl alcohol material is processed into products such as films, sponges and the like, and can be used as medical films and wound protection materials.
The polyvinyl alcohol foam sponge for negative pressure drainage requires good biocompatibility, good mechanical properties and processability and good therapeutic effect. The sponge has good biocompatibility and soft texture, and has small irritation to the wound surface and unobvious foreign body sensation; the sponge has good elasticity, a porous structure and large pore diameter, and can not be flattened by negative pressure during negative pressure drainage, so that the drainage is not smooth, a large amount of time can be saved for subsequent cutting and pipe penetrating procedures, the productivity is improved, and the risk of pollution is reduced; the stretching resistance, the extrusion resistance and the water absorption capacity are strong, and the use requirements can be met. Therefore, the medical polyvinyl alcohol sponge is more and more widely applied to negative pressure drainage sealing operation.
The diameters of all positions of a sponge strip of the current negative pressure drainage strip and a drainage hole of a drainage tube are the same, and the structure has the following defects: 1. the drainage effect of each position of the negative pressure drainage strip is uneven, and the drainage effect close to the negative pressure generating device is far better than that of other positions; 2. when the negative pressure drainage strip is pulled out of drainage positions of a patient, such as a fistula, the sponge strip on the negative pressure drainage strip is easy to fall off and stays in the body of the patient.
In addition, in actual production, the cutting and perforation process of the negative pressure drainage strip is a key production process, the existing perforating machine can only be operated by manpower, time and labor are wasted, the production efficiency is low, the rejection rate is high, and the current production requirement cannot be met.
Disclosure of Invention
The invention aims to provide a negative pressure drainage strip with uniform drainage and a sponge strip not easy to fall off, and a perforating machine for perforating the sponge strip of the negative pressure drainage strip.
The negative pressure drainage strip is composed of a sponge strip and a drainage tube, and drainage holes are uniformly formed in the side wall of the drainage tube; the sponge strip is provided with a through hole; the key point is that the head end of the through hole is of a gradually-expanding bell mouth-shaped structure; the drainage tube is positioned in the through hole, and the shape of the drainage tube is in accordance with that of the through hole; the tail end of the drainage tube is exposed out of the sponge strip.
Because the head ends of the through hole and the drainage tube are of the flaring-shaped bell mouth-shaped structures, the drainage space at the head end of the drainage strip is larger than that at other positions, correspondingly, more drainage holes are formed, and the drainage capacity is stronger than that at other positions under the action of the same drainage negative pressure; but because the head end is farthest away from the negative pressure generating device, the negative pressure suction force at the head end is smaller than that at other positions, and the drainage capacities of all parts of the whole drainage tube tend to be the same in combination.
In addition, the gradually-expanding head end of the negative pressure drainage strip can prevent the sponge strip on the negative pressure drainage strip from falling off when the negative pressure drainage strip is pulled out of drainage positions of a fistula and the like of a patient.
The structure of the perforating machine for perforating the sponge strip of the negative pressure drainage strip provided by the invention is as follows: the puncher comprises a die, a lifting mechanism, a guide rail, a sliding block, a motor, a hollow drill cylinder, a top column, a punching platform and a fixing block; the die is arranged on the lifting mechanism and is positioned above the perforating platform; the guide rail is positioned on the side of the perforating platform and is vertical to the perforating platform; the fixed block is fixed relative to the guide rail, the sliding block is movably arranged on the guide rail and is positioned between the fixed block and the perforated platform, and the sliding block is provided with a sliding block driving mechanism so as to drive the sliding block to move along the guide rail; the motor is fixed on the sliding block, the drilling barrel is movably arranged on the sliding block through the bracket, and a motor shaft of the motor is connected with the drilling barrel through a transmission mechanism so as to drive the drilling barrel to rotate; the two ends of the drill cylinder are provided with openings, the top pillar is fixed on the fixed block in a horizontal state and faces the drill cylinder, and the diameter of the top pillar is smaller than the inner diameter of the drill cylinder; the mold is of a box body structure with an opening at the bottom end, and the side wall of the mold is provided with an opening for the drill cylinder to pass through; and one side of the die, which is far away from the guide rail, is conical or trapezoidal.
The working principle of the puncher is as follows:
firstly, placing a cut strip-shaped sponge strip on a perforation platform and facing the lower part of a mould; the mould is moved downwards by using a lifting mechanism and covers the sponge strips; then, a slide block driving mechanism is used for driving the slide block to move towards the direction of the mould, and meanwhile, a motor is used for driving the drill cylinder to rotate; the drilling cylinder extends into the mould from an opening on the side wall of the mould, and a hole is drilled in the sponge strip in the mould; when drilling, the sponge strip can move under the effect of boring a section of thick bamboo to compress tightly gradually in the toper side of mould, make the sponge strip of the toper side of mould inseparabler, bore a section of thick bamboo when drilling the sponge strip of this department, although the diameter of drilling is unchangeable, the sponge that drills away is more, like this when sponge strip resumes original fluffy state, the hole of this position can form the horn mouth column structure of flaring naturally. The length of the sponge strip is smaller than that of the side wall of the mold parallel to the direction of the guide rail, so that the sponge strip can move in the mold along the direction of the guide rail; the width of the sponge strip is slightly smaller than or equal to the length of the side wall of the mold perpendicular to the direction of the guide rail so as to limit the shaking of the sponge strip in the mold.
After the sponge strips are drilled by the drilling barrel, the sliding block driving mechanism is used for driving the sliding block to move towards the direction of the fixed block, so that the drilling barrel is withdrawn from the mold and the sponge strips, and in the withdrawal process, the side wall of the mold, which is close to one side of the guide rail, can prevent the sponge strips from moving along with the drilling barrel; when the drill cylinder moves backwards for a certain distance, the top pillar extends into the drill cylinder, so that the sponge in the drill cylinder is ejected out of the drill cylinder.
Specifically, the lifting mechanism is composed of a fixing frame and an air cylinder installed on the fixing frame, the fixing frame is erected above the perforation platform, and the mold is fixed on a piston rod of the air cylinder. The cylinder is adopted to control the up-and-down lifting of the die, and the die has the advantages of convenience in control and high stroke precision.
Further, the perforated platform is a conveying belt which advances in a beat-to-beat manner; the bottom of the side wall of the die parallel to the direction of the guide rail is a cutting edge. The sponge to be cut is placed on the conveying belt, the sponge is cut into a preset strip shape by the cutting edges at the bottoms of the side walls of the two sides when the die descends every time, and the conveying belt advances in a beat mode, so that drilling can be performed when the conveying belt stops, after the drilling is completed, the die ascends, the conveying belt continues to advance, the next sponge strip is cut and drilled, and continuous production is achieved.
The perforating machine can automatically drill a through hole with one end part of the through hole in a gradually-expanded horn-mouth-shaped structure on the sponge strip, and the negative pressure drainage strip manufactured by adopting the sponge strip not only can uniformly drain at each position, but also can prevent the sponge strip on the negative pressure drainage strip from falling off when the negative pressure drainage strip is pulled out of drainage positions such as a fistula of a patient.
Drawings
Fig. 1 is a schematic structural view of the negative pressure drainage strip of the present invention.
Fig. 2 is a front view (drilling state) of the piercing machine of the present invention.
Fig. 3 is a front view (non-drilling state) of the piercing machine of the present invention.
Fig. 4 is a plan view of the piercing machine of the present invention (non-drilled state).
The figures are numbered: 1. a sponge strip; 2. a drainage tube; 3. a drainage hole; 4. a through hole; 5. a mold; 6. a guide rail; 7. a slider; 8. a motor; 9. drilling a barrel; 10. a top pillar; 11. a piercing platform; 12. a fixed block; 13. a support; 14. and a transmission mechanism.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
Example 1:
as shown in the figure, the negative pressure drainage strip of the embodiment is composed of a sponge strip 1 and a drainage tube 2, and drainage holes 3 are uniformly formed in the side wall of the drainage tube 2; the sponge strip 1 is provided with a through hole 4; the key point is that the head end of the through hole 4 is a gradually-expanding bell mouth-shaped structure; the drainage tube 2 is positioned in the through hole 4, and the shape of the drainage tube 2 is in accordance with that of the through hole 4; the tail end of the drainage tube 2 is exposed out of the sponge strip 1.
The structure of the perforating machine for perforating the sponge strip 1 of the negative pressure drainage strip of the embodiment is as follows:
the puncher comprises a die 5, a lifting mechanism (not shown in the figure), a guide rail 6, a slide block 7, a motor 8, a hollow drill cylinder 9, a top column 10, a punching platform 11 and a fixed block 12; the die 5 is arranged on the lifting mechanism and is positioned above the perforating platform 11; the guide rail 6 is positioned on the side of the perforated platform 11 and is vertical to the perforated platform 11; the fixed block 12 is fixed relative to the guide rail 6, the slide block 7 is movably arranged on the guide rail 6 and is positioned between the fixed block 12 and the perforated platform 11, and the slide block 7 is provided with a slide block driving mechanism (a stepping motor and a roller driven by the stepping motor can be used as the slide block driving mechanism, the slide block driving mechanism is not shown in the figure) so as to drive the slide block 7 to move along the guide rail 6; the motor 8 is fixed on the sliding block 7, the sliding block 7 is fixedly provided with a support 13, the drilling drum 9 is rotatably arranged on the support 13 through a bearing, and a motor shaft of the motor 8 is connected with the drilling drum 9 through a transmission mechanism 14 (a belt is adopted as the transmission mechanism 14 in the embodiment) so as to drive the drilling drum 9 to rotate; two ends of the drill cylinder 9 are opened, and saw teeth are arranged on the side wall of the drill cylinder 9 facing one end of the drilling platform; the top pillar 10 is fixed on the fixed block 12 in a horizontal state and faces the drill cylinder 9, and the diameter of the top pillar 10 is smaller than the inner diameter of the drill cylinder 9; the mold 5 is of a box body structure with an opening at the bottom end, and the side wall of the mold 5 is provided with an opening for the drill cylinder 9 to pass through; and one side of the die 5, which is far away from the guide rail 6, is in an isosceles trapezoid shape.
The working principle of the puncher is as follows:
firstly, placing a cut strip-shaped sponge strip 1 on a perforation platform 11 and facing the lower part of a mould 5; the mould 5 is moved downwards by using a lifting mechanism and covers the sponge strip 1; then, a slide block driving mechanism is used for driving the slide block 7 to move towards the direction of the mould 5, and meanwhile, a motor 8 is used for driving a drill barrel 9 to rotate; the drilling cylinder 9 extends into the mould 5 from an opening on the side wall of the mould 5, and holes are drilled on the sponge strips 1 in the mould 5; when drilling, the sponge strip 1 can move under the action of the drill cylinder 9 and is gradually pressed on the conical side of the die 5, so that the sponge strip 1 on the conical side of the die 5 is more compact (namely, the density is higher), when the drill cylinder 9 drills the sponge strip 1 at the position, although the diameter of the drilled hole is unchanged, the drilled sponge is more, and thus when the sponge strip 1 returns to the original fluffy state, the hole at the position naturally forms a flaring-shaped bell mouth-shaped structure. The length of the sponge strip 1 should be less than the length of the side wall of the mold 5 parallel to the direction of the guide rail 6 (i.e. the length of L1 in the figure), so that the sponge strip 1 can move in the mold 5 along the direction of the guide rail 6; the width of the sponge strip 1 should be slightly less than or equal to the length of the side wall of the mold 5 perpendicular to the direction of the guide rail 6 (i.e. the length of L2 in the figure) to limit the shaking of the sponge strip 1 in the mold 5.
After the sponge strip 1 is drilled with the drilling cylinder 9, the slide block 7 is driven by the slide block driving mechanism to move towards the fixed block 12, so that the drilling cylinder 9 exits from the mold 5 and the sponge strip 1, and in the exiting process, the side wall of the mold 5 close to one side of the guide rail 6 can prevent the sponge strip 1 from moving along with the drilling cylinder 9; when the drill cylinder 9 moves backwards for a certain distance, the top pillar 10 extends into the drill cylinder 9, so that the sponge in the drill cylinder 9 is ejected out of the drill cylinder 9.
Specifically, the lifting mechanism is composed of a fixing frame and an air cylinder installed on the fixing frame, the fixing frame is erected above the perforation platform 11, and the mold 5 is fixed on a piston rod of the air cylinder. The cylinder is adopted to control the die 5 to ascend and descend, and the die has the advantages of convenience in control and high stroke precision.
In the present embodiment, the perforated platform 11 is a conveyor belt that travels in a beat-to-beat manner; the bottom of the side wall of the mould 5 parallel to the direction of the guide rail 6 is a cutting edge. The sponge to be cut is placed on the conveying belt, the sponge is cut into a preset strip shape by the cutting edges at the bottoms of the side walls of the two sides when the die 5 descends every time, and due to the fact that the conveying belt advances in a beat mode, drilling can be conducted when the conveying belt stops, after drilling is completed, the die 5 rises, the conveying belt continues to advance, cutting and drilling of the next sponge strip 1 are conducted, and therefore continuous production is achieved.
Claims (3)
1. A perforating machine for perforating a sponge strip of a negative pressure drainage strip is provided with a through hole; the head end of the through hole is of a gradually-expanded horn mouth-shaped structure; the punching machine is characterized by comprising a die, a lifting mechanism, a guide rail, a sliding block, a motor, a hollow drill cylinder, a top column, a punching platform and a fixing block; the die is arranged on the lifting mechanism and is positioned above the perforating platform; the guide rail is positioned on the side of the perforating platform and is vertical to the perforating platform; the fixed block is fixed relative to the guide rail, the sliding block is movably arranged on the guide rail and is positioned between the fixed block and the perforated platform, and the sliding block is provided with a sliding block driving mechanism so as to drive the sliding block to move along the guide rail; the motor is fixed on the sliding block, the drilling barrel is movably arranged on the sliding block through the bracket, and a motor shaft of the motor is connected with the drilling barrel through a transmission mechanism so as to drive the drilling barrel to rotate; the two ends of the drill cylinder are provided with openings, the top pillar is fixed on the fixed block in a horizontal state and faces the drill cylinder, and the diameter of the top pillar is smaller than the inner diameter of the drill cylinder; the mold is of a box body structure with an opening at the bottom end, and the side wall of the mold is provided with an opening for the drill cylinder to pass through; and one side of the die, which is far away from the guide rail, is conical or trapezoidal.
2. The perforating machine for the sponge strips of the negative-pressure drainage strips as claimed in claim 1, characterized in that the lifting mechanism is composed of a fixed frame and a cylinder mounted on the fixed frame, the fixed frame is erected above the perforating platform, and the die is fixed on a piston rod of the cylinder.
3. The perforating machine for perforating sponge strips for negative-pressure drainage strips according to claim 1 or 2, characterized in that the perforating platform is a conveyor belt that travels in a beat-to-beat manner; the bottom of the side wall of the die parallel to the direction of the guide rail is a cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670758.XA CN107596458B (en) | 2017-08-08 | 2017-08-08 | Negative pressure drainage strip and perforating machine for sponge strip of negative pressure drainage strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670758.XA CN107596458B (en) | 2017-08-08 | 2017-08-08 | Negative pressure drainage strip and perforating machine for sponge strip of negative pressure drainage strip |
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| Publication Number | Publication Date |
|---|---|
| CN107596458A CN107596458A (en) | 2018-01-19 |
| CN107596458B true CN107596458B (en) | 2020-04-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202528275U (en) * | 2012-04-13 | 2012-11-14 | 保定莱盛打印机配件有限公司 | Foam strip perforating device for powder feeding roller of printer |
| CN203017552U (en) * | 2012-12-26 | 2013-06-26 | 李秋 | Negative pressure drainage tube |
| CN103419247A (en) * | 2013-08-23 | 2013-12-04 | 东莞市樟木头雅丰海绵制品加工厂 | Molding system for sponge pipe |
| CN204106816U (en) * | 2014-10-15 | 2015-01-21 | 中国人民解放军南京军区南京总医院 | The double-cavity negative-pressure drainage tube of the preposition sponge used under scope |
| CN204709600U (en) * | 2015-06-24 | 2015-10-21 | 胡海涛 | A kind of negative pressure drainage irrigating canula |
-
2017
- 2017-08-08 CN CN201710670758.XA patent/CN107596458B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202528275U (en) * | 2012-04-13 | 2012-11-14 | 保定莱盛打印机配件有限公司 | Foam strip perforating device for powder feeding roller of printer |
| CN203017552U (en) * | 2012-12-26 | 2013-06-26 | 李秋 | Negative pressure drainage tube |
| CN103419247A (en) * | 2013-08-23 | 2013-12-04 | 东莞市樟木头雅丰海绵制品加工厂 | Molding system for sponge pipe |
| CN204106816U (en) * | 2014-10-15 | 2015-01-21 | 中国人民解放军南京军区南京总医院 | The double-cavity negative-pressure drainage tube of the preposition sponge used under scope |
| CN204709600U (en) * | 2015-06-24 | 2015-10-21 | 胡海涛 | A kind of negative pressure drainage irrigating canula |
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| Publication number | Publication date |
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| CN107596458A (en) | 2018-01-19 |
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Effective date of registration: 20200422 Address after: 510515, No. 1838, Guangzhou Avenue, Baiyun District, Guangdong, Guangzhou Patentee after: SOUTHERN HOSPITAL, SOUTHERN MEDICAL University Address before: 510510, room 103, 2405 Jingxi Road, Guangdong, Guangzhou Co-patentee before: Wan Mianshui Patentee before: Wang Jian |