CN108261231B - Puncture sleeve device of small-sized laparoscope puncture outfit - Google Patents
Puncture sleeve device of small-sized laparoscope puncture outfit Download PDFInfo
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- CN108261231B CN108261231B CN201810202028.1A CN201810202028A CN108261231B CN 108261231 B CN108261231 B CN 108261231B CN 201810202028 A CN201810202028 A CN 201810202028A CN 108261231 B CN108261231 B CN 108261231B
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- 238000007789 sealing Methods 0.000 claims abstract description 156
- 238000002347 injection Methods 0.000 claims abstract description 62
- 239000007924 injection Substances 0.000 claims abstract description 62
- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 239000013013 elastic material Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 19
- 239000007788 liquid Substances 0.000 abstract description 3
- 210000000683 abdominal cavity Anatomy 0.000 description 18
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 12
- 238000013461 design Methods 0.000 description 11
- 238000007906 compression Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 210000001015 abdomen Anatomy 0.000 description 4
- 210000004872 soft tissue Anatomy 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000003187 abdominal effect Effects 0.000 description 2
- 210000003815 abdominal wall Anatomy 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
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- 239000012634 fragment Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000003491 skin Anatomy 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 208000005646 Pneumoperitoneum Diseases 0.000 description 1
- 206010067268 Post procedural infection Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 229920002529 medical grade silicone Polymers 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3474—Insufflating needles, e.g. Veress needles
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Surgical Instruments (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a puncture sleeve device of a small laparoscope puncture outfit, wherein a sealing assembly is arranged in an inner cavity of a puncture sleeve, and a channel for a puncture needle to penetrate is arranged on the vertical center of the puncture sleeve; an air injection valve is arranged on the side wall of the puncture sleeve seat and is integrated with the puncture sleeve. The puncture cannula also comprises a puncture cannula seat and a puncture positioning guide cover, a connecting mechanism between the puncture cannula seat and the puncture positioning guide cover can firmly fix a sealing assembly in an inner cavity formed between the puncture cannula seat and the puncture positioning guide cover, the sealing assembly comprises a first sealing valve, a second sealing valve and a sealing cover, and a multi-stage sealing device is adopted by the sealing assembly, so that the sealing effect is good; the limiting structure is arranged between the puncture positioning guide cover and the puncture needle, so that the puncture needle can be effectively prevented from shaking, the gas injection valve and the puncture sleeve seat are integrally formed, the installation stability is high, and the gas leakage or liquid leakage phenomenon is not easy to occur. The puncture outfit is specially designed for a puncture outfit with the specification of 5mm, and has the advantages of convenience in installation, good sealing effect, safety and reliability.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and relates to a puncture sleeve device of a small laparoscopic puncture outfit.
Background
In minimally invasive human medical surgery, once a disease is found in a human body, surgery or excision is needed, in the surgery process, a puncture outfit is firstly needed to be applied, and the puncture outfit is a surgical instrument which punctures the abdominal wall and enters a body cavity channel for other surgical instruments, and belongs to a minimally invasive surgical instrument. The penetrator typically includes a sleeve assembly for access to other surgical instruments and a penetration rod extending through the sleeve assembly. Firstly, in order to penetrate skin, firstly, skin epidermis is incised by a scalpel, then skin is penetrated by a puncture rod and the puncture rod together with a sleeve component enter a body cavity, then the puncture rod is withdrawn, the sleeve component can be used as a channel for introducing various instruments and tools into an abdominal cavity and providing a gas filling chamber for raising the abdominal wall to the upper part of an organ, in order to prevent gas leakage in the abdominal cavity when various instruments and tools are inserted into the abdominal cavity in the operation process, a sealing component is required to be arranged in the sleeve component, the common sealing component generally comprises a mounting seat, a plurality of sealing gaskets which are distributed in a woven mode or are arranged in a staggered and overlapped mode circumferentially are arranged on the mounting seat, and in use, the instruments pass through the center of the sealing component formed by a plurality of the sealing gaskets, so that the sealing effect is achieved. However, the existing puncture device puncture sleeve has the problems that the sealing effect of a sealing assembly is poor, a puncture needle rod is easy to shake, an air injection valve is easy to leak air, and the use effect is poor.
Therefore, how to improve the use effect of the puncture outfit and ensure the fluency of the movement process of the instrument is a technical problem to be solved at present.
Disclosure of Invention
The invention aims to solve the technical problem of providing a small laparoscope puncture outfit aiming at the defects of the prior art. The puncture outfit is specially designed for a small puncture outfit with the specification of 5mm, and has the advantages of convenient installation, good sealing effect, safety and reliability.
In order to solve the problems, the invention adopts the following technical scheme:
the puncture sleeve device of the small-sized laparoscope puncture device further comprises a puncture sleeve body, a puncture positioning guide cover and a sealing assembly, wherein the sealing assembly is arranged in an inner cavity formed between the puncture positioning guide cover and a puncture sleeve seat, the puncture sleeve body comprises a puncture sleeve seat and a sleeve, the puncture positioning guide cover is arranged above the puncture sleeve seat, and the sleeve is arranged below the puncture sleeve seat; an air injection valve is arranged on the side wall of the puncture sleeve seat and is integrated with the puncture sleeve.
Further, the sealing assembly comprises a first sealing valve, a second sealing valve and a sealing cover, the second sealing valve is correspondingly connected with an installation cylinder in the puncture outfit base, the first sealing valve is installed above the second sealing valve, the sealing cover is installed above the first sealing valve, the puncture positioning guide cover is arranged above the sealing cover, and the puncture positioning guide cover is connected with the puncture cannula base to compress the sealing assembly therein.
Further, the first sealing valve is a cup sealing valve made of elastic materials, the second sealing valve is a duckbill valve made of elastic materials, the upper part of the duckbill valve is a mounting ring, a second groove correspondingly connected with a mounting cylinder in the puncture outfit base is arranged below the mounting ring, the cup bottom of the cup sealing valve is in seamless connection with the upper bottom surface of the mounting ring, the side wall of the cup sealing valve is embedded and mounted in the first groove below the sealing cover, the side wall of the outer side of the second groove corresponds to the side wall of the cup sealing valve in position, and the width of the side wall of the second groove is equal.
Further, the side wall of the cup body sealing valve is vertically connected with the cup bottom, a puncture needle hole is formed in the center of the cup bottom of the cup body sealing valve, a fold part is further arranged on the lower bottom surface of the cup bottom, the opening direction of folds in the fold part is opposite to the opening direction of the cup body sealing valve, and the outer bottom surface of the cup bottom between the fold part and the puncture needle hole is an inclined surface.
Further, the specific connection mechanism of the puncture positioning guide cover and the puncture sleeve seat is as follows: the puncture sleeve seat is provided with a first locking groove, the puncture positioning guide cover is provided with a corresponding first locking boss, one side of the first locking groove is provided with a locking spring plate, and after the first locking boss slides into the first locking groove by rotating to lower the locking spring plate, the locking spring plate springs up to clamp the first locking boss in the first locking groove.
Further, the first locking groove is an L-shaped hollow groove and is formed in the seat edge on the upper portion of the puncture sleeve seat, the short side portion of the L-shaped hollow groove is located on the side edge of the locking elastic piece and serves as a clamping portion of the first locking boss, the long side portion of the L-shaped hollow groove is located below the locking elastic piece, and a pressing space is provided for the locking elastic piece.
Further, a second locking groove is further formed in the wall of the seat edge at the upper part of the puncture sleeve seat, a corresponding second locking boss is arranged on the puncture positioning guide cover, and the second locking boss is clamped and fixed by rotating and sliding into the second locking groove; the second locking groove is an L-shaped groove, the opening end of the L-shaped groove faces upwards, and the closed end faces the circumferential direction of the seat edge on the upper part of the puncture sleeve seat.
Further, a limiting block is further arranged on the puncture needle rod of the puncture needle, the puncture positioning guide cover is provided with a limiting groove corresponding to the limiting block, and the limiting block is embedded into the limiting groove to form a limiting mechanism.
Further, the device comprises a puncture sleeve seat and an air injection valve, wherein the peripheral surface of the puncture sleeve seat is provided with two concave parts, the air injection valve is arranged at the outer side of one concave part, the air injection valve comprises a valve body, a valve core and an air injection pipe, the air injection pipe is connected with a mounting cylinder in the concave part, and the included angle between the air injection pipe and the mounting cylinder is 65-75 degrees; the valve body is cylindrical and is arranged on the gas injection pipe in a left-right through direction; a valve core capable of rotating circumferentially to communicate or block the gas injection pipe is arranged in the valve body; the puncture cannula seat, the valve body and the gas injection pipe are of an integrated structure.
Working principle:
the sealing device of the invention is matched with a disposable puncture outfit for use, is a minimally invasive endoscopic matched surgical instrument which is suitable for the establishment of a surgical working channel in the abdominal cavity, urinary tract and gynecological endoscopic examination and surgical process, firstly, a puncture cone at the front end of a puncture cone of the disposable puncture outfit is inserted into a small incision of the abdominal soft tissue of a patient, the puncture cone punctures the lower layer of the soft tissue and enters the soft tissue together with a bevel section with taper at the lower part of a puncture sleeve, the puncture cone penetrates through the abdominal soft tissue of the patient until reaching the abdominal cavity, at the moment, the puncture sleeve penetrates into the abdominal cavity along with the puncture cone to reach the middle part of the puncture sleeve, as the lower part of a second sealing valve is provided with a duckbill valve body, the lower part of the duckbill valve body is provided with an air inlet hole to play a role of unidirectional sealing, when the puncture cone is pulled out of the puncture sleeve, a valve switch at the upper part of the gas injection valve is opened, gas is injected into the abdominal cavity of a patient from the puncture sleeve through a gas inlet of the gas injection valve, a valve core and a valve body, so that the abdominal cavity of the patient is bulged, the valve is closed, an abdominal cavity surgical instrument can be inserted into the abdominal cavity from a first sealing valve and a second sealing valve of the disposable puncture outfit and is inserted into the abdominal cavity through the puncture sleeve, the performance of the sealed abdominal cavity surgical instrument is good due to the arrangement of the second sealing valve and the first sealing valve, gas in the injected abdominal cavity cannot leak, the surgical instrument is pulled out of the disposable puncture outfit after the operation is finished, the valve switch is opened, the injected gas in the abdominal cavity of the patient is discharged from a gas outlet of the gas injection valve, and the disposable puncture outfit can be pulled out of the abdominal cavity of the patient after the injected gas is discharged.
Advantageous effects
The sealing assembly in the puncture cannula adopts the multi-channel sealing device, so that the sealing performance is reliable, particularly the design of the first sealing valve can effectively ensure the dynamic sealing effect in the operation process, and the gas injected into the abdominal cavity through the puncture outfit gas injection valve can not leak out in the operation process, so that the normal operation of the abdominal cavity can be ensured, and the use is safe and reliable.
The connecting structure between the puncture positioning guide cover and the puncture sleeve seat in the puncture sleeve can effectively compress the sealing assembly, can effectively avoid false touch, and can further ensure the safety of the puncture device in the use process by screwing the puncture positioning guide cover out of the puncture sleeve seat.
A limiting mechanism is further arranged between the puncture positioning guide cover and the puncture needle in the puncture sleeve, so that the puncture needle is prevented from shaking in the operation process, and the operation safety is ensured.
The valve mounting structure in the puncture sleeve is integrally formed between the gas injection valve and the puncture sleeve seat, has high mounting stability, has a good sealing effect in use, and is not easy to generate gas leakage or liquid leakage.
Drawings
FIG. 1 is a schematic view of the overall structure of a small-sized puncture outfit according to the present invention;
FIG. 2 is a schematic cross-sectional view of the small-sized puncture outfit according to the present invention;
FIG. 3 is a schematic view of an explosive structure of the small-sized puncture outfit according to the present invention;
FIG. 4 is a schematic view of the puncture cannula of the miniature puncture outfit of the present invention;
FIG. 5 is a schematic view of an explosive structure of a puncture cannula of the small-sized puncture outfit according to the present invention;
FIG. 6 is a schematic view showing the structure of the inner cross section of the puncture cannula holder of the small puncture outfit according to the present invention;
FIG. 7 is a schematic cross-sectional view of a seal assembly of the small-sized puncture outfit according to the present invention;
FIG. 8 is a schematic view of an exploded view of the seal assembly of the miniature puncture outfit of the present invention;
FIG. 9 is a schematic view showing the overall structure of a first sealing valve of the small-sized puncture outfit according to the present invention;
FIG. 10 is a schematic view showing a forward cross-sectional structure of a first sealing valve of the small-sized puncture outfit according to the present invention;
FIG. 11 is a schematic view showing a reverse cross-sectional structure of a first sealing valve of the small-sized puncture instrument according to the present invention;
FIG. 12 is a schematic cross-sectional view of a second sealing valve of the small-sized puncture outfit according to the present invention;
FIG. 13 is a schematic front view of the puncture cannula holder of the small-sized puncture outfit according to the present invention;
FIG. 14 is a schematic view showing the inner surface structure of a puncture positioning guide cover of the small puncture outfit of the present invention;
FIG. 15 is a schematic front view of the puncture positioning guide cover of the small puncture outfit of the present invention;
FIG. 16 is a schematic view showing the reverse structure of the puncture cannula holder of the small puncture outfit according to the present invention;
FIG. 17 is a schematic view showing the structure of a puncture needle of the small puncture outfit according to the present invention;
FIG. 18 is an enlarged schematic view showing the connection structure between the lancet shaft and the lancet sealing cap of the small-sized puncture outfit according to the present invention;
FIG. 19 is an enlarged schematic view showing the structure of the lancet holder of the small-sized puncture outfit according to the present invention;
FIG. 20 is an enlarged schematic view showing the structure of the lancet sealing cap of the small-sized puncture outfit according to the present invention;
FIG. 21 is a schematic view of the structure of the gas injection valve of the small puncture outfit of the present invention;
FIG. 22 is a schematic view of the valve stem structure of the gas injection valve of the small-sized puncture outfit according to the present invention;
wherein, 1-puncture cannula body, 11-puncture cannula seat, 111-mounting cylinder, 112-concave part, 113-rib plate, 114-first locking groove, 115-locking spring, 116-second locking groove, 12-cannula, 2-puncture needle, 21-puncture needle sealing cover, 211-flat surface, 212-arc surface, 213-convex line, 214-positioning groove, 215-plug block, 216-clamping groove, 22-puncture needle bar, 221-bar body, 222-puncture needle bar seat, 223-puncture cone head, 224-limit block, 225-positioning column, 226-clamping block, 227-plug groove, 3-gas injection valve, 31-gas injection tube, 32-valve body, 321-arc notch, 33-valve rod, 331-arc limiting block, 332-conical end, 34-switch handle, 341-anti-slip flange, 35-vent, 4-seal assembly, 41-first seal valve (cup seal valve), 411-cup bottom, 412-cup seal valve side wall, 413-fold, 414-puncture pinhole, 415-guide groove, 42-second seal valve, 421-mounting ring, 422-second groove, 43-seal cover, 5-puncture positioning guide cover, 51-limit groove, 52-compression cylinder, 53-first locking boss, 54-second locking boss, 55-support table, 56-petal groove.
Detailed Description
The invention is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two parts. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
1-6, the small puncture outfit comprises a puncture sleeve and a puncture needle, wherein a sealing component 4 is arranged in the inner cavity of the puncture sleeve, a channel for the puncture needle to penetrate is arranged in the vertical center of the puncture sleeve and is marked as a puncture channel, and when the puncture outfit is used, the puncture needle 2 is inserted into the puncture sleeve through the puncture channel and extends out from the tail end of the puncture sleeve; an air injection valve 3 is arranged on the side wall of the puncture sleeve seat, and the air injection valve 3 and the puncture sleeve are integrated, so that air can be supplied to the body through the puncture outfit, and the pneumoperitoneum can be kept.
The puncture cannula further comprises a puncture cannula body 1 and a puncture positioning guide cover 5, wherein the puncture cannula body 1 comprises a puncture cannula seat 11 and a cannula 12, the puncture positioning guide cover 5 is arranged above the puncture cannula seat 11, and the cannula 12 is arranged below the puncture cannula seat 11; the outer wall of the sleeve 12 is provided with sleeve threads, and the abdomen feeding mode of the puncture outfit can be changed by arranging the threads, so that the traditional twist extrusion abdomen feeding method or the vertical pressure abdomen feeding method is changed into a continuous spiral puncture abdomen feeding method, the speed of entering the abdominal cavity can be controlled, and the operation risk is reduced.
As shown in fig. 5-6, the seal assembly 4 of the present invention is used to increase the friction between the spike and the spike sheath and maintain the gas tightness; the seal assembly 4 is installed in the inner chamber that forms between puncture location direction lid 5 and puncture cannula holder 11, seal assembly 4 includes first sealing valve (cup sealing valve) 41, second sealing valve 42 and sealed cowling 43, second sealing valve 42 is connected with the corresponding installation section of thick bamboo 111 in the puncture ware base, first sealing valve 41 is installed to the top of second sealing valve 42, sealed cowling 43 is installed to the top of first sealing valve 41, the top of sealed cowling 43 is puncture location direction lid 5, puncture location direction lid 5 is connected with puncture cannula holder 11 and compresses tightly the seal assembly in it.
The first sealing valve 41 is a cup sealing valve made of elastic materials, the second sealing valve 42 is a duckbill valve made of elastic materials, a mounting ring 421 is arranged above the duckbill valve, the side wall of the cup sealing valve 41 is embedded into a first groove 431 below the sealing cover 43, the cup bottom of the cup sealing valve is in seamless connection with the upper bottom surface of the mounting ring 421, the upper bottom surface of the sealing cover 43 is in close contact with a compression cylinder 52 in the puncture positioning guide cover 5, and the side wall 412 of the cup sealing valve is correspondingly connected with the groove in the sealing cover 43.
The sealing assembly and the puncture sleeve seat are installed in a clamping fit mode, so that the connection is stable and firm, a welding mode in the prior art and the like are not needed, the process is simpler, and the energy conservation and the environmental protection are realized.
In addition, the groove of the sealing cover 43 limits the side wall of the cup sealing valve in the groove, so that the movable degree of the cup sealing valve is small, friction is effectively reduced, and the service life is prolonged. In addition, the cup body sealing valve is made of hard plastic, so that a hard protective shell is protected for the flexible cup body sealing valve, and deformation of the cup body sealing valve is avoided, and the sealing effect is influenced.
As shown in fig. 12, a second groove 422 correspondingly connected with the mounting cylinder 111 in the puncture outfit base 11 is arranged below the mounting ring 421, and the side wall outside the second groove 422 corresponds to the side wall of the cup seal valve 41 in position and has the same width; the sealing effect can be better due to the corresponding positions of the two.
As shown in fig. 9-11, the first sealing valve 41 of the present invention is a cup sealing valve made of elastic material, wherein a puncture needle hole 414 is formed in the center of a cup bottom 411 of the cup sealing valve, a fold portion 413 is further formed on the lower bottom surface of the cup bottom 411, and the opening direction of the fold in the fold portion 413 is opposite to the opening direction of the cup sealing valve 41. The first sealing valve is specially suitable for a surgical instrument with the diameter of a puncture needle hole of 4.7-4.9mm, and after the surgical instrument is inserted into the puncture needle hole, the stretching degree of the bottom surface of the cup bottom between the fold part and the puncture needle hole is increased, so that the aperture of the puncture needle hole is adapted to expand, interference connection can be formed to be clung to the surgical instrument, and meanwhile, the bevel structure design of the bottom surface of the cup bottom between the fold part and the puncture needle hole can also enable air in the sleeve base of the puncture device to press the bevel to hug the surgical instrument, so that a self-sealing structure is formed, and the sealing effect of the puncture needle hole and the surgical instrument is further enhanced; meanwhile, when the surgical instrument shakes, the fold part of the cup bottom can deform, and the puncture needle hole can be tightly attached to the surgical instrument without air leakage, so that a good dynamic sealing effect is maintained.
The ratio of the height of the folds in the folds 413 to the height of the bottom surface of the cup bottom 411 is 1:2-4, and the ratio of the height of the folds in the folds 413 to the height of the bottom surface of the cup bottom is preferably 1:3. The purpose that fold portion does not occupy whole bottom surface of cup bottom is in order to control the degree of stretching of bottom of cup bottom surface between puncture pinhole and fold portion and the puncture pinhole, prevents that the deformation degree is too big, harm sealing member, influences life.
The purpose of providing the opening direction of the folds in the fold portion 413 opposite to the opening direction of the cup seal valve 41 is that the fold inclined surface in the direction has the effect of pressing the bottom surface of the cup under the action of the gas in the puncture cannula holder, so that the cup seal valve 41 is in closer contact with the seal cover 43, and the seal effect is better. The outer edge of the fold part corresponds to the inner wall of the mounting ring, so that the flexibility of the surgical instrument in dynamic use is ensured.
The inner bottom surface of the cup bottom, which extends out of the puncture needle hole 414, is provided with a guide groove 415 with a round table shape. The guide slot 415 is provided for guiding the surgical instrument to enter the puncture needle hole quickly, and for preventing the puncture needle hole from turning outwards when the surgical instrument is withdrawn. The center of the sealing cover is provided with a through hole corresponding to the upper bottom surface of the guide groove, namely the bottom surface of the first sealing valve is supported by the bottom surface of the sealing cover, and the puncture needle hole of the first sealing valve can be further prevented from being turned outwards when the surgical instrument is extracted.
The pleat 413 includes 2 pleats of the same shape. When the number of folds in the fold part 413 is 2, the puncture needle hole can be ensured to generate certain elastic deformation, the deformation degree can be effectively controlled, and the use effect is optimal.
The ratio of the length of the fold 413 from the puncture needle hole wall to the diameter of the puncture needle hole 414 is 3:4-5. The length of the fold part from the wall of the puncture needle needs to be carefully designed, and if the length of the fold part from the wall of the puncture needle is too large, the use flexibility of the surgical instrument in the puncture needle hole is affected; if the length of the fold part from the puncture needle hole wall is too small, the deformation degree of the puncture needle hole is small, which is not beneficial to sealing.
The elastic materials for preparing the first sealing valve and the second sealing valve are flexible medical rubber. Including but not limited to: medical silicone, medical rubber, medical polyurethane, medical latex, and combinations thereof, the sealing boot is made of a rigid plastic, including but not limited to: pp.
The side wall 412 of the cup sealing valve is vertically connected with the cup bottom 411, and the width of the side wall of the cup sealing valve is 3-5 times of the width of the cup bottom. The width of the side wall of the cup body sealing valve is far larger than the width of the cup bottom, so that the strength of the side wall of the cup body sealing valve is ensured, and the cup body sealing valve is not easy to deform in the groove of the sealing cover.
13-16, the connecting mechanism between the puncture cannula holder and the puncture positioning guide cover comprises a puncture cannula holder 11 and a puncture positioning guide cover 5 arranged on the puncture cannula holder 11, wherein a first locking groove 114 is formed in the puncture cannula holder 11, a corresponding first locking boss 53 is arranged on the puncture positioning guide cover 5, one side edge of the first locking groove 114 is provided with a locking elastic piece 115, and after the first locking boss 53 slides into the first locking groove 114 through rotating the locking elastic piece 115, the locking elastic piece 115 springs up to clamp the first locking boss 53 in the first locking groove 114. The first locking groove 114 is specifically an L-shaped hollow groove, and is formed on the seat edge on the upper portion of the puncture cannula seat 11, wherein a short side portion of the L-shaped hollow groove is located at a side edge of the locking elastic sheet 115, and is used as a clamping portion of the first locking boss 53, and a long side portion of the L-shaped hollow groove is located below the locking elastic sheet 115, so as to provide a space for the locking elastic sheet 115 to be depressed. The locking shell fragment 115 in this application adopts medical plastics (pp) to make, with the cooperation in its L type hollow groove of below, have certain deformability, when puncture location direction lid 5's installation on puncture sleeve pipe seat 11, first locking boss 53 at first rotates the extrusion locking bullet and presses down towards the long limit part in L type hollow groove, make first locking boss 53 can get into the minor face part in L type hollow groove, release the ascending bullet of extruded locking shell fragment 115 this moment to with first locking boss 53 chucking in first locking groove 114. The special design of the locking spring plate 115 in the application makes the first locking boss 53 rotate into the first locking groove 114 and then cannot rotate reversely, so that the operation that the puncture positioning guide cover 5 rotates away from the puncture sleeve seat 11 due to false touch can be effectively avoided, and the safety of the puncture outfit in the use process is ensured.
Further, the heights of the two ends of the locking spring piece 115 are different, wherein the height of the locking spring piece 115 clamping the side of the first locking boss 53 is larger than that of the locking spring piece 115 on the opposite side. This design allows for better gripping of the locking spring 115.
Further, a second locking groove 116 is further formed in the wall of the upper seat edge of the puncture cannula seat 11, a corresponding second locking boss 54 is arranged on the puncture positioning guide cover 5, and the second locking boss 54 is clamped and fixed by rotating and sliding into the second locking groove 116. The second locking groove 116 is an L-shaped groove with its open end facing upward and its closed end facing in the circumferential direction of the seat upper portion of the puncture cannula seat 11. The design in this application of second locking groove 116 and first locking groove 114 lets both mutually support, after second locking platform locking in second locking groove 116, first locking platform just locks in first locking groove 114, and guarantee puncture location direction lid 5 unable reverse rotation to avoid the second locking platform to follow second locking groove 116 internal rotation out, and second locking groove 116 can realize axial fixity, can guarantee puncture location direction lid 5 can't collapse from puncture sleeve seat 11 under the high atmospheric pressure in puncture sleeve seat 11. Therefore, the secondary locking device can further ensure the installation stability of the puncture positioning guide cover 5 on the puncture cannula holder 11 and the sealing effect of the puncture outfit.
Further, the number of the second locking grooves 116 is two, and the two second locking grooves 116 are uniformly distributed on the circumference of the seat at the upper portion of the puncture cannula seat 11. Of the two second locking grooves 116, one second locking groove 116 is adjacent to the first locking groove 114, and the closed end of the second locking groove 116 faces the first locking groove 114 side.
Further, the center of the puncture positioning guide cover 5 is provided with a compressing cylinder 52, 4 supporting tables are uniformly arranged on the outer side of the compressing cylinder 52, the supporting tables are arranged to ensure the strength of the puncture positioning guide cover 5 and are not easy to deform, one supporting table is provided with a first locking boss 53 corresponding to the first locking groove 114, and the first locking boss 53 is an L-shaped locking boss.
Further, the petal groove 56 is arranged on the outer wall of the puncture positioning guide cover 5, so that friction force during rotation of the puncture positioning guide cover is increased conveniently. In addition, the limit groove 51 corresponding to the puncture needle rod is further formed in the upper portion of the compression cylinder 52, the shape of the limit groove 51 is matched with that of the compression cylinder, a limit structure is formed, the limit groove 51 is arranged above the compression cylinder 52, convenience and stability of installation of the limit block in the limit groove can be guaranteed, strength of the puncture positioning guide cover and stability of installation on the puncture sleeve seat are not affected, and simplicity and high efficiency are achieved.
Further, an inverted circular truncated cone-shaped guide groove is formed in the extension of the compression cylinder, and the purpose of the guide groove is to enable the limiting block to be inserted into the limiting groove 51 more quickly.
17-20, the puncture needle for the laparoscope puncture outfit comprises a puncture needle rod 22 and a puncture needle sealing cover 21, wherein the puncture needle rod 22 comprises a rod body 221, a puncture conical head 223 and a puncture needle rod seat 222, the puncture needle rod seat 222 is arranged at the top of the rod body 221, and the puncture conical head 223 is arranged at the bottom of the rod body 221; the periphery of the cover body of the puncture needle sealing cover 21 is divided into two symmetrical flat surfaces 211 and two symmetrical arc surfaces 212, the flat surfaces 211 are smooth surfaces, the arc surfaces 212 are provided with convex lines 213, the design aims to take the flat surfaces 211 as holding parts for convenient grasping, the arc surfaces 212 as operating surfaces, and the convex lines 213 on the upper surfaces have an anti-skid function and are convenient for inserting and extracting the puncture needles; the positioning groove 214 is formed in the puncture needle sealing cover 21 close to the flat surface 211 side, the corresponding positioning column 225 is arranged on the puncture needle rod seat 222, the positioning column 225 is inserted into the positioning groove 214 to fixedly mount the puncture needle sealing cover 21 and the puncture needle rod seat 222, the positioning column 225 and the positioning groove 214 ensure direct insertion so as to fix the puncture needle sealing cover 21 and the puncture needle rod seat 222, the mounting position of the puncture needle sealing cover 21 on the puncture needle rod seat 222 is directly positioned, the flat surface 211 is ensured to be used as a holding part to face the hand during operation, erroneous mounting is effectively avoided, and the mounting mode is simple and convenient.
Further, the puncture needle bar 22 further comprises a limiting block 224, wherein the limiting block 224 is positioned below the puncture needle bar seat 222, and one side of the limiting block 224 is in seamless connection with the puncture needle bar seat 222; the positioning column 225 is positioned right above the limiting block 224, and the tip end in the puncture conical head 223 is positioned right below the limiting block 224; the limiting block 224 is used for limiting the mounting position of the puncture needle rod 22 in the puncture positioning guide cover 5, so that the puncture needle can be effectively prevented from rotating radially in the puncture sleeve, and the stability of the operation process is ensured; in addition, the relative positions of the positioning column 225, the puncture conical head 223 and the limiting block 224 are limited, so that the installation direction of the puncture needle sealing cover 21 can be ensured, and the installation direction of the puncture needle in the puncture sleeve can be ensured.
Further, the puncture needle bar seat 222 is disc-shaped, and the diameter of the puncture needle bar seat 222 is equal to the inner diameter of the bottom of the puncture needle sealing cover 21. The bottom of the flat surface 211 of the puncture needle sealing cover 21 is also provided with a plug-in block 215, the bottom of the arc-shaped surface 212 is also provided with a clamping groove 216, and the puncture needle rod seat 222 is provided with a plug-in groove 227 corresponding to the plug-in block 215 and a clamping block 226 corresponding to the clamping groove 216. The insertion block 215 and the clamping groove 216 are uniformly distributed on the inner circumferential surface of the puncture needle sealing cover 21. The design can further strengthen the mounting stability of the puncture needle sealing cover 21 and the puncture needle rod seat 222, and the designed connection mode is clamping connection, so that the puncture needle sealing cover is more convenient, quick, safe and environment-friendly compared with the ultrasonic welding mode in the prior art.
Further, the other side of the stopper 224 is seamlessly connected with the rod 221. The limiting block 224 is an L-shaped limiting block 224, the short side of the L-shaped limiting block 224 is in seamless connection with the puncture needle rod seat 222, and the long side of the L-shaped limiting block 224 is in seamless connection with the rod body 221. The L-shaped limiting block 224 and the puncture needle rod 22 are integrally formed, the limiting block 224 and the puncture needle rod 22 are very simple to manufacture and are very stable to connect, the puncture needle rod 22 can be effectively prevented from radially rotating in the puncture sleeve, and the puncture needle rod is not easy to be damaged by stress, and long in service life.
As shown in fig. 21-22, the valve mounting mechanism for a laparoscope puncture outfit of the invention comprises a puncture cannula holder 11 and an air injection valve 3, wherein the circumference of the puncture cannula holder 11 is provided with two concave parts 112, the air injection valve 3 is arranged at the outer side of one concave part 112, the air injection valve 3 comprises a valve body 32, a valve core and an air injection pipe 31, the air injection pipe 31 is connected with a mounting cylinder 111 in the concave part 112, and the included angle between the air injection pipe 31 and the mounting cylinder 111 is 65-75 degrees, namely, the air injection pipe 31 is obliquely arranged on the concave part 112, firstly, an air injection hose which can be inserted on the air injection pipe 31 is obliquely arranged, the stress angle is better, the air injection pipe 31 is not easy to slide off from the air injection pipe 31, the operation is prevented from being interrupted, secondly, the air injection pipe 31 is obliquely designed and is matched with the concave part 112, so that the air injection pipe 31 forms a semi-hidden design on the cannula holder 11, and the problem of the air injection valve 3 is not easy to be collided with error unless the air injection valve 3 is consciously operated in the use process; the valve body 32 is cylindrical and is mounted on the gas injection pipe 31 in a left-right through direction, wherein the left-right through is in a direction opposite to the up-down through direction of the puncture outfit, and the valve body 32 of the gas injection valve 3 is arranged on the puncture seat in a vertically through manner in the prior art; a valve core capable of rotating circumferentially to communicate or block the gas injection pipe 31 is arranged in the valve body 32; the puncture cannula holder 11, the valve body 32 and the gas injection tube 31 are of an integrated structure, so that the puncture cannula holder is high in strength and high in stability, has a good sealing effect in use, and is not easy to generate gas leakage or liquid leakage.
Further, the air injection pipe 31 is installed below the concave part 112, the rib plate 113 is further installed in the area between the upper side of the valve body 32 and the concave part 112, the rib plate 113 is arranged in the middle of the concave part 112, the rib plate 113, the puncture sleeve seat 11, the valve body 32 and the air injection pipe 31 are of an integrated structure, the air injection pipe can be simply realized through an injection molding technology, the design of the rib plate 113 is simple in manufacturing process, the connection strength between the air injection valve 3 and the puncture sleeve seat 11 is higher, the structural stability is better, meanwhile, the rib plate 113 also plays a role of facilitating the hand to hold at the concave part 112, the puncture device is better to hold, and finally the error touch of the air injection valve 3 can be further prevented.
Further, the valve core comprises a valve rod 33 which is arranged in the valve body 32 in a circumferential rotation way, one end of the valve rod 33 is provided with a switch handle 34 positioned at the outer side of the valve body 32, the other end is provided with an inclined cone end 332, and the purpose of the inclined cone end 332 is that the inclined cone end 332 is convenient for the valve rod 33 to be quickly arranged in the valve body 32, so that the valve core is convenient to use and saves cost; a vent hole 35 is provided in the middle of the valve stem 33, and is capable of penetrating the valve stem 33 radially. A circumferential limiting mechanism capable of limiting circumferential rotation of the valve rod 33 is arranged between the valve rod 33 and the valve body 32; the circumferential limiting mechanism comprises an arc notch 321 arranged at the end part of the valve body 32, and the valve rod 33 is provided with an arc limiting block 331 which corresponds to the arc notch 321 and can respectively abut against the end part of the arc notch 321 when the valve rod 33 rotates circumferentially. Namely, when the arc limiting block 331 abuts against one end of the arc notch 321, the vent hole 35 communicates the gas injection pipe 31 with the mounting cylinder 111, and the switch handle 34 is parallel to the gas injection pipe 31; when the arc limiting block 331 abuts against the other end of the arc notch 321, the air vent 35 blocks the air injection pipe 31 from the mounting cylinder 111, the switch handle 34 is perpendicular to the air injection pipe 31, the switch handle 34 is higher than the concave part 1-2cm of the puncture sleeve seat 11 by 1-2cm, and a corresponding operation space is reserved for the operation of the switch handle 34, so that the valve is convenient to open or close, and an anti-slip flange 341 is further arranged on the outer side wall of the switch handle 34, so that the operation is convenient.
Further, a puncture positioning guide cover is further arranged on the puncture sleeve seat 11, a limit groove is further arranged in the puncture positioning guide cover, and the limit groove is arranged on the opposite side of the air injection valve 3; the puncture positioning guide cover is provided with a puncture needle, the puncture needle comprises a puncture needle sealing cap and a puncture needle rod, both sides of the puncture needle sealing cap are also provided with concave flat surfaces, the puncture needle rod is provided with a positioning block, the positioning block is arranged in a positioning groove through installation, and the positioning flat surfaces are arranged in a vertically corresponding manner with the groove position of the puncture cannula seat 11. The purpose of this design is to ensure the holding operation of the hand in the recess 112, which is advantageous for convenience of operation.
In a word, the disposable puncture outfit has reasonable design, compact structure, safe and effective use, can greatly reduce the wound area in clinical operation, greatly shorten the operation time, reduce the bleeding and postoperative infection of patients and improve the operation quality. By adopting the first sealing valve, good sealing capability can be still maintained after surgical instruments are repeatedly put in and taken out 1000 times. Can be widely applied to small puncture outfits for minimally invasive surgical operations such as laparoscopes, thoracoscopes and the like.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two parts. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (3)
1. A puncture cannula device of a small-sized laparoscope puncture outfit, which is characterized in that: the puncture cannula device further comprises a puncture cannula body, a puncture positioning guide cover and a sealing assembly, wherein the puncture cannula body comprises a puncture cannula seat and a cannula; the sealing assembly is arranged in an inner cavity formed between the puncture positioning guide cover and the puncture sleeve seat, the puncture positioning guide cover is arranged above the puncture sleeve seat, and the sleeve is arranged below the puncture sleeve seat; an air injection valve is arranged on the side wall of the puncture sleeve seat and is integrated with the puncture sleeve seat;
the sealing assembly comprises a first sealing valve, a second sealing valve and a sealing cover, wherein the second sealing valve is correspondingly connected with an installation cylinder in the puncture sleeve seat, the first sealing valve is installed above the second sealing valve, the sealing cover is installed above the first sealing valve, a puncture positioning guide cover is arranged above the sealing cover, and the puncture positioning guide cover is connected with the puncture sleeve seat to tightly press the sealing assembly in the puncture sleeve seat;
the first sealing valve is a cup sealing valve made of elastic materials, the second sealing valve is a duckbill valve made of elastic materials, a mounting ring is arranged above the duckbill valve, a second groove correspondingly connected with a mounting cylinder in the puncture sleeve seat is arranged below the mounting ring, the cup bottom of the cup sealing valve is in seamless connection with the upper bottom surface of the mounting ring, the side wall of the cup sealing valve is embedded and mounted in the first groove below the sealing cover, and the side wall of the cup sealing valve is limited by the groove of the sealing cover; the cup body sealing valve is made of hard plastic; the side wall at the outer side of the second groove corresponds to the side wall of the cup body sealing valve in position and is equal in width;
the side wall of the cup body sealing valve is vertically connected with the cup bottom, a puncture needle hole is formed in the center of the cup bottom of the cup body sealing valve, a fold part is further arranged on the lower bottom surface of the cup bottom, the opening direction of folds in the fold part is opposite to the opening direction of the cup body sealing valve, and the outer bottom surface of the cup bottom between the fold part and the puncture needle hole is an inclined surface; the ratio of the height of the folds in the fold part to the height of the bottom surface of the cup bottom is 1:2-4;
the specific connection mechanism of the puncture positioning guide cover and the puncture sleeve seat is as follows: the puncture cannula seat is provided with a first locking groove, the puncture positioning guide cover is provided with a corresponding first locking boss, one side edge of the first locking groove is provided with a locking spring plate, and after the first locking boss slides into the first locking groove through rotating the locking spring plate downwards, the locking spring plate springs up to clamp the first locking boss in the first locking groove;
the first locking groove is an L-shaped hollow groove and is formed in a seat edge at the upper part of the puncture sleeve seat, wherein the short side part of the L-shaped hollow groove is positioned at the side edge of the locking elastic piece and is used as a clamping part of the first locking boss, and the long side part of the L-shaped hollow groove is positioned below the locking elastic piece to provide a pressing space for the locking elastic piece;
the upper seat edge wall of the puncture sleeve seat is also provided with a second locking groove, the puncture positioning guide cover is provided with a corresponding second locking boss, and the second locking boss is clamped and fixed by rotating and sliding into the second locking groove; the second locking groove is an L-shaped groove, the opening end of the L-shaped groove faces upwards, and the closed end faces the circumferential direction of the seat edge on the upper part of the puncture sleeve seat.
2. The puncture cannula device of the small-sized laparoscopic puncture outfit according to claim 1, wherein the puncture cannula device is characterized in that: the puncture needle rod of the puncture needle is also provided with a limiting block, the puncture positioning guide cover is provided with a limiting groove corresponding to the limiting block, and the limiting block is embedded into the limiting groove to form a limiting mechanism.
3. The puncture cannula device of the small-sized laparoscopic puncture outfit according to claim 1, wherein the puncture cannula device is characterized in that: the circumference of the puncture sleeve seat is provided with two concave parts, the outer side of one concave part is provided with an air injection valve, the air injection valve comprises a valve body, a valve core and an air injection pipe, the air injection pipe is connected with a mounting cylinder in the concave part, and the included angle between the air injection pipe and the mounting cylinder is 65-75 degrees; the valve body is cylindrical and is arranged on the gas injection pipe in a left-right through direction; a valve core capable of rotating circumferentially to communicate or block the gas injection pipe is arranged in the valve body; the puncture cannula seat, the valve body and the gas injection pipe are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810202028.1A CN108261231B (en) | 2018-03-12 | 2018-03-12 | Puncture sleeve device of small-sized laparoscope puncture outfit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810202028.1A CN108261231B (en) | 2018-03-12 | 2018-03-12 | Puncture sleeve device of small-sized laparoscope puncture outfit |
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| Publication Number | Publication Date |
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| CN108261231A CN108261231A (en) | 2018-07-10 |
| CN108261231B true CN108261231B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810202028.1A Active CN108261231B (en) | 2018-03-12 | 2018-03-12 | Puncture sleeve device of small-sized laparoscope puncture outfit |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108969067B (en) * | 2018-07-13 | 2024-07-02 | 浙江优亿医疗器械股份有限公司 | Puncture outfit sealing valve assembly |
| CN110960296A (en) * | 2018-09-29 | 2020-04-07 | 江苏风和医疗器材股份有限公司 | Puncture outfit shell and puncture outfit |
| CN110090046B (en) * | 2019-04-10 | 2021-06-22 | 江苏省人民医院（南京医科大学第一附属医院） | An improved thyroid puncture device |
| CN110051412A (en) * | 2019-05-10 | 2019-07-26 | 常州平康医疗科技有限公司 | Safe puncture outfit |
| CN111000621A (en) * | 2019-12-09 | 2020-04-14 | 天津瑞奇外科器械股份有限公司 | Sealing structure, puncture cannula and medical puncture outfit |
| CN111658092A (en) * | 2020-07-08 | 2020-09-15 | 江苏三联星海医疗器械股份有限公司 | Puncture outfit easy for flexible operation of instrument and use method |
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