CN113712649B - Hole closing device - Google Patents
Hole closing device Download PDFInfo
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- CN113712649B CN113712649B CN202111273105.0A CN202111273105A CN113712649B CN 113712649 B CN113712649 B CN 113712649B CN 202111273105 A CN202111273105 A CN 202111273105A CN 113712649 B CN113712649 B CN 113712649B
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- channel
- inner tube
- hole
- instrument
- obturator
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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
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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
- A61B17/3474—Insufflating needles, e.g. Veress needles
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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
- A61B2017/3419—Sealing means between cannula and body
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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
- A61B2017/347—Locking means, e.g. for locking instrument in cannula
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Abstract
The invention discloses a hole closing device, and belongs to the technical field of medical instruments. Comprises an inner tube assembly, an outer tube and a plunger assembly; the inner pipe assembly is provided with a far-end opening and an inner channel extending along the length direction of the hole closing device, the outer pipe is sleeved on the inner pipe assembly and forms an outer channel through the outer pipe and the inner pipe assembly, the outer channel extends along the length direction of the hole closing device, and the end parts of the outer pipe and the inner pipe assembly are connected to the plunger assembly at the same time; the plunger assembly is provided with an instrument hole and a gas hole which are used for being communicated with the outside, the instrument hole is communicated with the inner channel to form an instrument channel for instruments to penetrate through, and the gas hole is communicated with the outer channel to form a gas channel for gas to circulate; the distal opening communicates with the gas channel and the instrument channel, respectively. The gas channel and the instrument channel are integrated on the obturator, so that the obturator has the function of realizing double functions.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a hole closing device.
Background
At present, the traditional abdominal cavity minimally invasive surgery is a multi-hole surgery, namely 3-4 surgical channels of single instruments are opened around a focus position in the abdominal cavity of a patient, and each surgical channel needs to be established independently.
In the prior art, when an endoscope and an obturator are inserted, two operation holes are usually required to be formed on the abdominal cavity of a patient, wherein one operation hole is used for inserting the endoscope, and the other insertion hole is used for inserting the obturator.
However, each time a surgical hole is opened, a medical staff holds the puncture card after the puncture card is inserted, and the increase of the number of the holes is not beneficial to the postoperative recovery of the patient.
Disclosure of Invention
The embodiment of the invention aims to provide a hole closing device, which can solve the problem that the function of the hole closing device in the prior art is single.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an obturator, including an inner tube assembly, an outer tube, and a plunger assembly; the inner pipe assembly is provided with a far-end opening and an inner channel extending along the length direction of the hole closing device, the outer pipe is sleeved on the inner pipe assembly and forms an outer channel through the outer pipe and the inner pipe assembly, the outer channel extends along the length direction of the hole closing device, and the end parts of the outer pipe and the inner pipe assembly are connected to the plunger assembly at the same time; the plunger assembly is provided with an instrument hole and a gas hole which are used for being communicated with the outside, the instrument hole is communicated with the inner channel to form an instrument channel for instruments to penetrate through, and the gas hole is communicated with the outer channel to form a gas channel for gas to circulate; the distal opening communicates with the gas channel and the instrument channel, respectively.
In the embodiment of the invention, the inner tube assembly is arranged for providing an inner channel, the outer tube is arranged for being matched with the inner tube assembly to form an outer channel, specifically, the inner wall of the outer tube and the tube wall of the inner tube assembly form the outer channel, the end part of the inner tube assembly and the outer tube are simultaneously connected to the plunger assembly, the instrument hole is communicated with the inner channel to form an instrument channel for an instrument to penetrate through, and then the instrument is inserted; the gas hole is communicated with the outer channel to form a gas channel for gas circulation, so that gas is introduced. The inner channel and the outer channel extend along the length direction of the obturator, instrument channels and gas channels are provided, and because the instrument channels and the gas channels are arranged on the obturator, instruments can be inserted into a patient and inflated simultaneously through the obturator in the operation process, so that the number of the operation holes is reduced. The embodiment of the invention has the beneficial effect of reducing the number of the surgical holes.
It should be noted that, when the abdominal cavity of the patient needs to be inflated and the endoscope needs to be inserted at the same time, the obturator of the present invention can realize the dual functions of inflating and inserting the endoscope only by opening an operation hole in the abdominal cavity of the patient and establishing an operation channel, and the obturator has the advantages of less trauma to the patient and short recovery period. And only one operation hole is needed to be opened, the pre-judgment before the operation can be realized, an endoscope can be inserted after the hole is opened (the endoscope is taken as a functional device for illustration in the following content), and the pre-judgment is carried out on the applicability of the hole opening position and the accurate determination of the focus position.
Drawings
FIG. 1 is a cross-sectional view of an obturator of an embodiment of the invention;
FIG. 2 is a front view of a obturator in an embodiment of the invention;
FIG. 3 is a bottom view of a obturator of an embodiment of the present invention;
FIG. 4 is a schematic structural view of an inner tube assembly in an embodiment of the present invention;
FIG. 5 is a schematic view of an alternative orientation of the inner tube assembly in accordance with an embodiment of the present invention;
FIG. 6 is a schematic structural view of an outer tube in an embodiment of the present invention;
FIG. 7 is a schematic view showing the structure of the inner tube adapter connected to the puncturing inner tube in the embodiment of the present invention;
FIG. 8 is a schematic structural view of an inner pipe joint in an embodiment of the present invention;
FIG. 9 is a schematic view of a luer fitting in an embodiment of the invention;
figure 10 is a schematic view of a luer seal plug in an embodiment of the present invention;
figure 11 is a cross-sectional view of a luer seal plug in an embodiment of the present invention;
FIG. 12 is a schematic view of a plunger assembly coupled to a luer fitting in an embodiment of the present invention;
FIG. 13 is a schematic structural view of a closure in another orientation in accordance with an embodiment of the present invention;
FIG. 14 is a schematic representation of an obturator instrument channel in an embodiment of the invention;
fig. 15 is a schematic view of a closure hole gas passage in an embodiment of the invention.
Description of reference numerals:
75. an inner tube assembly; 76. an outer tube; 77. a plunger assembly; 751. puncturing the inner tube; 752. a puncture head; 753. an inner pipe joint; 754. a first seal ring; 7521. an air outlet; 7522. a first mounting hole; 7523. a first air intake hole; 7531. a second mounting hole; 7532. a second air intake hole; 7533. an internal thread section; 771. a plunger body; 772. a spherical retainer ring; 773. a luer fitting; 774. a luer seal plug; 775. a second seal ring; 776. a third seal ring; 7731. a gas hole; 7534. a second channel; 777. an instrument hole; 7524. a first channel; 755. a distal opening; 761. an annular channel; 7721. a torsion spring structure; 778. a connecting end portion; 7711. a flange portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the invention may be practiced other than those illustrated or described herein, and that the objects identified as "first," "second," etc. are generally a class of objects and do not limit the number of objects, e.g., a first object may be one or more. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The closure device provided by the embodiment of the present invention is described in detail below with reference to the accompanying drawings by specific embodiments and application scenarios thereof.
Referring to fig. 1-15, an embodiment of the present invention provides an obturator that includes an inner tube assembly 75, an outer tube 76, and a plunger assembly 77; the inner tube assembly 75 is provided with a distal opening 755 and an inner channel extending along the length direction of the obturator, the outer tube 76 is sleeved on the inner tube assembly 75 and forms an outer channel through the outer tube 76 and the inner tube assembly 75, the outer channel extends along the length direction of the obturator, and the outer tube 76 and the end of the inner tube assembly 75 are connected to the plunger assembly 77; the plunger assembly 77 is provided with an instrument hole 777 and a gas hole, the instrument hole 777 is communicated with the inner channel to form an instrument channel for instruments to penetrate through, and the gas hole is communicated with the outer channel to form a gas channel for gas to circulate; the distal opening 755 is in communication with the gas channel and the instrument channel, respectively.
In the embodiment of the present invention, the inner tube assembly 75 is configured to provide an inner channel, the outer tube 76 is configured to cooperate with the inner tube assembly 75 to form an outer channel, specifically, the inner wall of the outer tube 76 and the tube wall of the inner tube assembly 75 form an outer channel, the end of the inner tube assembly 75 and the outer tube 76 are connected to the plunger assembly 77 at the same time, the instrument hole 777 is communicated with the inner channel to form an instrument channel for an instrument to pass through, so as to insert an instrument; the gas hole is communicated with the outer channel to form a gas channel for gas circulation, so that gas is introduced into the abdominal cavity. The inner channel and the outer channel extend along the length direction of the obturator, instrument channels and gas channels are provided, and because the instrument channels and the gas channels are arranged on the obturator, instruments can be inserted into a patient and inflated simultaneously through the obturator in the operation process, so that the number of the operation holes is reduced. The embodiment of the invention has the beneficial effect of reducing the number of the surgical holes.
It should be noted that, when the abdominal cavity of the patient needs to be inflated and the endoscope needs to be inserted at the same time, the obturator of the present invention can realize the dual functions of inflating and inserting the endoscope only by opening an operation hole in the abdominal cavity of the patient and establishing an operation channel, and the obturator has the advantages of less trauma to the patient and short recovery period. And only one operation hole is needed to be opened, the pre-judgment before the operation can be realized, an endoscope can be inserted after the hole is opened (the endoscope is taken as a functional device for illustration in the following content), and the pre-judgment is carried out on the applicability of the hole opening position and the accurate determination of the focus position.
Optionally, in the present embodiment, the inner tube assembly 75 includes a puncture inner tube 751, a puncture head 752 and an inner tube connector 753, wherein a first end of the puncture inner tube 751 is fixedly connected to the puncture head 752, and a second end of the puncture inner tube 751 is fixedly connected to the inner tube connector 753; the puncture inner tube 751 is hollow and through, a first channel 7524 is arranged in the puncture head 752, a second channel 7735 is arranged in the inner tube connector 753, and the instrument hole 777, the second channel 7735, the puncture inner tube 751 and the first channel 7524 are sequentially communicated to form the instrument channel; the opening formed in the end of the piercing tip 752 by the first channel 7524 is the distal orifice of the piercing tip; the second passage 7735 is respectively communicated with the instrument hole 777 and the gas hole; the outer tube 76 is sleeved on the puncture inner tube 751 and the inner tube connector 753, one end of the outer tube 76 is connected with the puncture head 752, and the other end of the outer tube 76 is connected with the plunger assembly 77.
In the embodiment of the invention, the puncture inner tube 751 is arranged to form an inner channel, the inner channel is formed by enclosing the tube wall of the puncture inner tube 751, the first end of the puncture inner tube 751 is fixedly connected with the puncture head 752, the puncture head 752 is arranged to be inserted into an operation hole, the second end of the puncture inner tube 751 is fixedly connected with the inner tube connector 753, and the inner tube connector 753 is arranged to be connected with the plunger assembly 77. The first channel 7524 and the second channel 7735 are configured to couple to an instrument channel, and the instrument hole 777, the second channel 7735, the internal channel, and the first channel 7524 are in communication in sequence to form an instrument channel. The first channel 7524 communicates with the instrument channel to enable insertion of instruments from the first channel 7524 into the patient, and the second channel 7735 communicates with the instrument bore 777 and the gas bore, respectively, for enabling passage of instruments and gas into the instrument channel and the gas channel through the instrument bore 777 and the gas bore. The outer tube 76 is configured to connect to the piercing head 752 while enclosing the inner piercing tube 751 and the inner tube connector 753, with one end of the outer tube 76 connected to the inner tube connector 753 and the other end of the outer tube 76 connected to the plunger assembly 77, with the plunger assembly 77 at least partially within the outer tube 76.
It should be noted that the instrument hole 777 and the gas hole are independent from each other, and the instrument hole 777 and the gas hole are connected to the second passage 7735 through different passages.
Further, the puncture inner tube 751 and the puncture head 752 are laser-welded, and the puncture inner tube 751 and the inner tube joint 753 are laser-welded. Optionally, in the embodiment of the present invention, a second installation hole 7531 is provided at an end of the inner tube fitting 753 connected to the puncture inner tube 751, an end of the puncture inner tube 751 near the inner tube fitting 753 is inserted into the second installation hole 7531, and the second installation hole 7531 communicates with the puncture inner tube 751.
In the embodiment of the invention, the second installation hole 7531 is provided for realizing the fixed connection of the inner pipe joint 753 and the puncture inner pipe 751, one end of the puncture inner pipe 751, which is close to the inner pipe joint 753, is inserted into the second installation hole 7531 and is fixedly connected with the inner pipe joint 753, and the second installation hole 7531 is used for realizing the penetration of the inner pipe joint 753 and an inner channel so as to realize the beneficial effect that an instrument channel penetrates between the inner pipe joint 753 and the puncture inner pipe 751.
Optionally, in the present embodiment, an annular channel 761 is formed between the inner wall of the outer tube 76 and the outer wall of the piercing inner tube 751; the circumferential side of the second mounting hole 7531 is provided with at least one second intake hole 7532, the second passage 7735 is communicated with the annular passage 761 through the second intake hole 7532, and the gas hole, the second passage 5535, the annular passage 761 and the first passage 7524 are communicated in sequence to form the gas passage.
In the embodiment of the invention, the annular channel 761 is arranged to realize the penetration of the gas channel between the outer tube 76 and the puncture inner tube 751, the second gas inlet holes 7532 are arranged to realize the introduction of gas into the annular channel 761 from the second channel 7735, and the gas holes, the second channel 7735, the annular channel 761 and the first channel 7524 are communicated in sequence to realize the beneficial effect that the gas channel penetrates between the inner tube connector 753 and the puncture head 752
Optionally, in the embodiment of the present invention, 2 second air inlet holes 7532 are provided, the second air inlet holes 7532 are provided on the periphery of the second mounting hole 7531, and the second air inlet holes 7532 are arc-shaped holes, which are adapted to the cross-sectional shape of the annular channel 761.
In the embodiment of the present invention, the 2 second gas inlet holes 7532 surrounding the second mounting holes 7531 are provided to allow gas to enter the second channel 7735 from the gas holes, and the 2 arc-shaped holes are provided to be close to the cross-sectional shape of the annular channel 761 to the greatest extent, which has the beneficial effect of improving the gas entering efficiency.
Optionally, in an embodiment of the present invention, a first mounting hole 7522 is disposed at an end of the puncture head 752 near the puncture inner tube 751, an end of the puncture inner tube 751 near the puncture head 752 is inserted into the first mounting hole 7522, and the puncture inner tube 751 is communicated with the first channel 7524 through the first mounting hole 7522.
In the embodiment of the invention, the first mounting hole 7522 is provided for realizing the connection between the puncture head 752 and the puncture inner tube 751, one end of the puncture inner tube 751 close to the puncture head 752 is inserted into the first mounting hole 7522 and is fixedly connected with the puncture head 752, and the first mounting hole 7522 is used for realizing the penetration between the puncture head 752 and the inner channel, so as to realize the beneficial effects that the instrument channel and the gas channel penetrate between the puncture head 752 and the puncture inner tube 751.
It should be noted that the first channel 7524 is a common channel, and the first channel 7524 is a part of the instrument channel and a part of the gas channel.
It should be noted that the piercing head 752 and the piercing inner tube 751 are connected by laser welding.
Optionally, in the embodiment of the present invention, there are 2 first air inlet holes 7523, the first air inlet holes 7523 are disposed on the periphery of the first mounting hole 7522, and the first air inlet holes 7523 are arc-shaped holes, and the arc-shaped holes are adapted to the cross-sectional shape of the annular channel 761.
In the embodiment of the present invention, the 2 first air inlet holes 7523 surrounding the first mounting hole 7522 are arranged to allow air to enter the first channel 7524 from the outer channel, and the 2 arc holes are arranged to be close to the cross-sectional shape of the annular channel 761 to the maximum extent, which has the beneficial effect of improving the efficiency of air entering.
Optionally, in this embodiment of the present invention, the plunger assembly 77 includes a plunger body 771, the instrument hole 777 extends along the length direction of the obturator, the instrument hole 777 opens on the plunger body 771, and the instrument hole 777, the second channel 7735, the puncture inner tube 751 and the first channel 7524 are coaxially arranged.
In the embodiment of the present invention, the plunger body 771 is provided to form an instrument hole 777, the instrument hole 777 is provided in the plunger body 771 along the length direction of the obturator, the instrument hole 777 is coaxially provided with the second channel 7735, the puncture inner tube 751 and the first channel 7524, and the instrument hole 777, the second channel 7735, the puncture inner tube 751 and the first channel 7524 which are coaxially provided are communicated, so that there is an advantage that an instrument channel is realized, and an instrument extends in the coaxial direction.
Optionally, in the present embodiment, the plunger assembly 77 includes a spherical surface retainer 772, the spherical surface retainer 772 is disposed at one end of the plunger body 771 near the inner tube connector 753, and the spherical surface retainer is provided with a torsion spring structure 7721; the torsion spring structure 7721 is used to reset the spherical retainer 772 to the closed state; when the instrument is inserted into the instrument channel, the spherical retainer 772 is switched from the closed state to the open state under the pushing of the instrument.
In the embodiment of the present invention, the spherical retainer 772 is connected to the plunger body 771 through a torsion spring, the torsion spring is disposed at one end of the plunger body 771 close to the inner tube connector 753, and the arrangement of the torsion spring can reset the spherical retainer 772, so as to seal the instrument channel. When the spherical collar 772 is in the closed state, the instrument hole 777 passage is closed; when an instrument is introduced through the instrument hole 777, the spherical collar 772 opens under the pushing force of the instrument, and the instrument channel is through, and at this time, the instrument hole 777 and the second channel 7735 are through, and the instrument extends from the instrument channel. Because the spherical retaining ring 772 can realize the sealing or the penetration of the instrument channel, the dual functions of inserting instruments and inflating or only two working states of the inflating function can be realized, and when the instruments are not required to be inserted and only the inflating function of the obturator is required, the spherical retaining ring 772 can realize the function of sealing the instrument channel. The embodiment of the invention has the beneficial effects of sealing the instrument channel and preventing gas leakage in the inflation process.
Optionally, in the present embodiment, the end of the outer tube 76 near the end of the plunger assembly 77 includes a connecting end 778, the connecting end 778 extending beyond the end of the inner tube fitting 753 near the end of the plunger assembly 77; an internal thread section 7533 is provided on an inner wall of the inner tube fitting 753 remote from the puncture inner tube 751, the plunger body 771 includes an external thread section provided at an outer periphery thereof with an external thread section, and a flange section 7711 provided to project radially outward, the flange section 7711 being remote from the inner tube fitting 753 relative to the external thread section; the plunger body 771 is inserted into the outer tube 76 and the male screw section and the female screw section 7533 are engaged, and the outer peripheral wall of the flange portion 7711 abuts against the inner wall of the connecting end 778.
In the embodiment of the invention, the outer tube is connected with one end of the plunger assembly 77 through the connecting end 778, the plunger assembly 77 is at least partially positioned in the outer tube, the external thread section is arranged to be matched with the internal thread section 7533 so as to realize the threaded connection of the inner tube joint 753 with the plunger body 771 and improve the air tightness of the plunger assembly 77, the flange part 7711 is arranged on the side of the plunger body 771, which is far away from the external thread section, the peripheral wall of the flange part 7711 is abutted with the inner wall of the connecting end 778, and the flange is arranged to improve the air tightness of the plunger assembly 77.
Optionally, in the embodiment of the present invention, the plunger assembly 77 further includes a second sealing ring 775 and a third sealing ring 776, the second sealing ring 775 is sleeved on the plunger body 771 and is located on a side of the flange portion 771 facing away from the external thread section to seal a gap between an outer periphery of the connecting end 778 and an inner wall of the outer tube 76; the third sealing ring 776 is disposed at the opening of the instrument hole 777 at the end far from the inner tube connector 753 to seal the opening of the instrument hole 777 when a surgical instrument is inserted.
In the embodiment of the present invention, the second sealing ring 775 is sleeved on the plunger main body 771 and located on a side of the flange portion 7711 away from the external thread section, and the second sealing ring 775 is configured to prevent gas leakage from a connection between the connecting end 778 and the plunger main body 771, and enhance airtightness at the connection between the connecting end 778 and the plunger main body 771. The third seal 776 is disposed at an opening of the instrument hole 777 away from the inner tube connector 753, and seals a gap between the surgical instrument and the instrument hole 777 when the surgical instrument is inserted, thereby preventing gas from leaking from the gap and improving the airtightness of the obturator.
The arrangement of the female screw section 7533 and the male screw section, the flange 7711, and the second seal 775, which are fitted to each other, is used to prevent gas leakage at the connection between the connecting end 778 and the plunger main body 771.
Optionally, in an embodiment of the present invention, the plunger assembly 77 further includes a luer connector 773 and a luer sealing plug 774, the luer connector 773 is disposed on the periphery of the plunger body 771, the luer connector 773 is configured as a hollow tubular structure, a third channel is disposed in the plunger body 771, the third channel extends along the length direction of the obturator, one end of the third channel is communicated with the luer connector 773, the other end of the third channel is communicated with the second channel 7735, and the third channel and the luer connector 773 are jointly formed into the gas hole 7731; the luer sealing plug 774 is detachably connected with the luer connector 773 to close or open the opening of the luer connector 773 communicating with the outside.
In the embodiment of the present invention, the luer 773 is a hollow tubular structure, the luer 773 is disposed on the outer periphery of the plunger main body 771, a third channel extending in the direction of the obturator is disposed in the plunger main body 771, one end of the third channel is communicated with the luer 773, the other end of the third channel is communicated with the second channel 7735, and the third channel and the luer 773 are communicated to form a gas hole 7731 for allowing an external device to introduce gas into the obturator; the luer sealing plug 774 is detachably connected with the luer connector 773, the luer sealing plug 774 is arranged to close the gas hole 7731 or open the gas hole 7731, when gas needs to be introduced into the abdominal cavity of a patient, the luer sealing plug 774 is separated from the luer connector 773, and external equipment introduces the gas into the obturator through the gas hole 7731; when it is only necessary to access the endoscope into the patient's abdominal cavity, luer seal 774 and luer 773 are connected.
Optionally, in the embodiment of the present invention, the inner tube assembly 75 includes a first sealing ring 754, and the first sealing ring 754 is sleeved on the puncture head 752 and clamped between the puncture head 752 and the outer tube 76.
In the embodiment of the present invention, the first sealing ring 754 is provided for sealing the gas channel, and the first sealing ring 754 is sleeved on the puncture head 752 and clamped between the puncture head 752 and the outer tube 76 for sealing between the puncture head 752 and the outer tube 76 in the gas channel. The embodiment of the invention has the beneficial effect of improving the air tightness of the ventilation channel.
Optionally, in an embodiment of the present invention, the puncture head 752 is hollow and through, and the puncture head 752 gradually shrinks radially inward in a direction away from the puncture inner tube 751.
In the embodiment of the invention, the hollow and penetrating arrangement of the puncture head 752 is respectively used for realizing the penetration of an instrument channel and a gas channel at the puncture head 752, the arrangement of the puncture head 752 is used for realizing the insertion of an operation hole, the outer surface of the puncture head 752 gradually and radially shrinks along the direction departing from the puncture inner tube 751, and the diameter of one end of the puncture head 752 far away from the puncture inner tube 751 is smaller than that of one end of the puncture head 752 connected with the puncture inner tube 751. The embodiment of the invention has the beneficial effect that both the instrument channel and the gas channel are through at the puncture head 752.
Optionally, in an embodiment of the present invention, an outer surface of the puncture head 752 is an arc surface, and at least one air outlet 7521 is disposed on the arc surface, and the air outlet 7521 is communicated with the first channel 7524.
In the embodiment of the invention, the arrangement of the cambered surface enhances the capability of the puncture head 752 to penetrate into an operation hole, the outer surface of the puncture head 752 is arranged to be the cambered surface to facilitate the whole obturator to be quickly inserted into the operation hole, the air outlet 7521 is arranged to realize the air passing, and the air outlet 7521 penetrating through the first channel 7524 is used to realize the air passing in the air channel out of the obturator from the air outlet 7521.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of embodiments of the present invention is not limited to performing functions in the order illustrated or discussed, but may include performing functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (15)
1. An obturator, characterized in that it comprises an inner tube assembly (75), an outer tube (76) and a plunger assembly (77);
the inner tube assembly (75) is provided with a distal opening (755) and an inner channel extending along the length direction of the obturator, the outer tube (76) is sleeved on the inner tube assembly (75) and forms an outer channel through the outer tube (76) and the inner tube assembly (75), the outer channel extends along the length direction of the obturator, and the ends of the outer tube (76) and the inner tube assembly (75) are simultaneously connected to the plunger assembly (77);
the plunger assembly (77) is provided with an instrument hole and a gas hole (7731) which are used for being communicated with the outside, the instrument hole is communicated with the inner channel to form an instrument channel for instruments to penetrate through, and the gas hole (7731) is communicated with the outer channel to form a gas channel for gas to circulate;
the distal opening (755) is in communication with the gas channel and the instrument channel, respectively;
the inner tube assembly (75) comprises a puncture inner tube (751), a puncture head (752) and an inner tube connector (753), wherein a first end of the puncture inner tube (751) is fixedly connected with the puncture head (752), and a second end of the puncture inner tube (751) is fixedly connected with the inner tube connector (753);
the puncture inner tube (751) is hollow and through, a first channel (7524) is arranged in the puncture head (752), a second channel (7534) is arranged in the inner tube connector (753), and the instrument hole (777), the second channel (7534), the puncture inner tube (751) and the first channel (7524) are communicated in sequence to form the instrument channel; the opening of the first channel (7524) formed at the end of the piercing head (752) is a distal mouth of the piercing head (752); the second channel (7534) is communicated with the instrument hole (777) and the gas hole (7731) respectively;
the outer tube (76) is sleeved on the puncture inner tube (751) and the inner tube connector (753), one end of the outer tube (76) is connected with the puncture head (752), and the other end of the outer tube (76) is connected with the plunger assembly (77).
2. The obturator according to claim 1, characterized in that the end of the inner tube fitting (753) connected to the piercing inner tube (751) is provided with a second mounting hole (7531), the end of the piercing inner tube (751) close to the inner tube fitting (753) is inserted into the second mounting hole (7531), the second mounting hole (7531) communicating with the piercing inner tube (751).
3. Obturator according to claim 2, characterised in that an annular channel (761) is formed between the inner wall of the outer tube (76) and the inner wall of the piercing inner tube (751); the periphery of the second mounting hole (7531) is provided with at least one second air inlet hole (7532), the second channel (7534) is communicated with the annular channel (761) through the second air inlet hole (7532), and the air hole (7731), the second channel (7534), the annular channel (761) and the first channel (7524) are communicated in sequence to form the air channel.
4. A obturator according to claim 3, characterized in that there are 2 second inlet holes (7532), said second inlet holes (7532) being provided peripherally to said second mounting hole (7531), said second inlet holes (7532) being arc-shaped holes adapted to the cross-sectional shape of said annular channel (761).
5. The obturator of claim 1, wherein the end of the piercing head (752) near the piercing inner tube (751) is provided with a first mounting hole (7522), the end of the piercing inner tube (751) near the piercing head (752) is inserted into the first mounting hole (7522), and the piercing inner tube (751) communicates with the first channel (7524) through the first mounting hole (7522).
6. Obturator according to claim 5, characterised in that an annular channel (761) is formed between the inner wall of the outer tube (76) and the inner wall of the piercing inner tube (751); the periphery of the first mounting hole (7522) is provided with at least one first air inlet hole (7523), and the annular channel (761) is communicated with the first channel (7524) through the first air inlet hole (7523).
7. A obturator according to claim 6, characterised in that the first air inlet holes (7523) are provided in 2, the first air inlet holes (7523) being provided on the periphery of the first mounting hole (7522), the first air inlet holes (7523) being arc-shaped holes adapted to the cross-sectional shape of the annular channel (761).
8. Obturator according to claim 1, characterized in that the plunger assembly (77) comprises a plunger body (771), the instrument hole (777) extending in the length direction of the obturator, the instrument hole (777) opening onto the plunger body (771), the instrument hole (777), the second channel (7534), the piercing inner tube (751) and the first channel (7524) being coaxially arranged.
9. An obturator according to claim 8 wherein the plunger assembly (77) comprises a spherical collar (772), the spherical collar (772) being provided at an end of the plunger body (771) adjacent to the inner tube fitting (753), the spherical collar (772) being provided with a torsion spring arrangement (7721);
the torsion spring structure (7721) is used for resetting the spherical retainer ring (772) to a closed state; under the condition that the instrument penetrates through the instrument channel, the spherical retainer ring (772) is switched from the closed state to the open state under the pushing of the instrument.
10. A closure according to claim 8 wherein the end of the outer tube (76) near one end of the plunger assembly (77) comprises a connecting end (778), the connecting end (778) extending beyond the end of the inner tube fitting (753) near one end of the plunger assembly (77);
an inner thread section (7533) is arranged on the inner wall of the inner pipe joint (753) far away from the puncture inner pipe (751), the plunger body (771) comprises an outer thread section and a flange section (7711) protruding outwards in the radial direction, the outer periphery of the outer thread section is provided with outer threads, and the flange section (7711) is far away from the inner pipe joint (753) relative to the outer thread section;
the plunger body (771) is inserted into the outer tube (76) and the male screw section and the female screw section (7533) are engaged, and the outer peripheral wall of the flange portion (7711) abuts against the inner wall of the connecting end portion (778).
11. A obturator according to claim 10, wherein the plunger assembly (77) further comprises a second sealing ring (775) and a third sealing ring (776), the second sealing ring (775) being fitted over the plunger body (771) and on the side of the flange portion (7711) facing away from the male threaded section to seal the gap between the outer circumference of the connecting end (778) and the inner wall of the outer tube (76);
the third sealing ring (776) is arranged at the opening of the instrument hole (777) at the end far away from the inner pipe connector (753) so as to seal the opening of the instrument hole (777) when a surgical instrument is inserted.
12. The obturator according to claim 8, wherein the plunger assembly (77) further comprises a luer connector (773) and a luer sealing plug (774), the luer connector (773) is arranged on the periphery of the plunger body (771), the luer connector (773) is configured as a hollow tubular structure, a third channel is arranged in the plunger body (771), the third channel extends along the length direction of the obturator, one end of the third channel is communicated with the luer connector (773), the other end of the third channel is communicated with the second channel (7534), and the third channel and the luer connector (773) are jointly formed into the gas hole (7731);
the luer sealing plug (774) is detachably connected with the luer connector (773) so as to close or open the opening of the luer connector (773) communicated with the outside.
13. The obturator of claim 1, wherein the inner tube assembly (75) comprises a first sealing ring (754), the first sealing ring (754) being sleeved on the piercing head (752) and being sandwiched between the piercing head (752) and the outer tube (76).
14. Obturator according to claim 1, characterized in that the piercing head (752) is internally hollow and through, and in that the piercing head (752) is gradually contracted radially inwards in a direction away from the inner piercing tube (751).
15. A obturator according to claim 1, characterized in that the outer surface of the piercing head (752) is a curved surface and that at least one exit orifice (7521) is provided on the curved surface, said exit orifice (7521) communicating with the first channel (7524).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111273105.0A CN113712649B (en) | 2021-10-29 | 2021-10-29 | Hole closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111273105.0A CN113712649B (en) | 2021-10-29 | 2021-10-29 | Hole closing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113712649A CN113712649A (en) | 2021-11-30 |
| CN113712649B true CN113712649B (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111273105.0A Active CN113712649B (en) | 2021-10-29 | 2021-10-29 | Hole closing device |
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| CN (1) | CN113712649B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005527252A (en) * | 2001-09-28 | 2005-09-15 | スティーブン・ピー・モエニング | Trocar-cannula complex and method for supplying fluid during cannula and further minimally invasive surgery |
| US7854724B2 (en) * | 2003-04-08 | 2010-12-21 | Surgiquest, Inc. | Trocar assembly with pneumatic sealing |
| US7182752B2 (en) * | 2003-04-08 | 2007-02-27 | Surgiquest, Incorporated | Continuous gas flow trocar assembly |
| US8690831B2 (en) * | 2008-04-25 | 2014-04-08 | Ethicon Endo-Surgery, Inc. | Gas jet fluid removal in a trocar |
| US9271752B2 (en) * | 2013-03-13 | 2016-03-01 | Swan Valley Medical Incorporated | Method and apparatus for placing a cannula in a bladder |
| CN105266748B (en) * | 2014-09-23 | 2017-04-12 | 中国人民解放军第二军医大学 | Anti-tissue damage endoscope obturator |
| US11957830B2 (en) * | 2019-10-03 | 2024-04-16 | Lexion Medical, Llc | Method and system for delivering insufflation fluid |
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