A puncture device cannula and puncture device having the same

Abstract

The application discloses a puncture outfit sleeve and a puncture outfit with the same, which comprises a first pipe body, a second pipe body and a separation component, the second pipe body is sleeved outside the first pipe body, and the separation component is arranged in a space formed by the first pipe body and the second pipe body. The separation component comprises a first separation piece and a second separation piece, the first separation piece forms a first separation channel and a second separation channel, and the second separation piece forms a first annular channel and a second annular channel; a gas guide channel formed by the first pipe body is communicated with an exhaust hole through the first annular channel to form an exhaust channel, a second separation channel is communicated with an air inlet through the second annular channel to form an air inlet channel, the first separation channel is communicated with a first pressure measuring hole to form a pressure measuring channel. The puncture outfit provided by the application can meet the three requirements of smoke removal, CO2 delivery for maintaining pneumoperitoneum and real-time detection of the change of the abdominal cavity gas pressure of a patient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a puncture device sleeve and a puncture device with the same. BACKGROUND

[0002] In laparoscopic surgery, it is necessary to use an electrotome or other edge cutting instrument. During cutting, instantaneous high temperature is generated, which causes the contacted tissue to gasify and a large amount of smoke. The smoke contains CO2 and water vapor, and also contains harmful substances. If the smoke is directly discharged into the operating room without filtration, not only the field of vision of medical staff will be affected, but also the operating environment will be polluted, and even the patient and medical staff will be harmed.

[0003] At present, the smoke exhaust instrument with filtering function is mainly a smoke exhaust puncture device. The smoke exhaust puncture device has independent smoke exhaust channels and air inlet channels. The smoke exhaust channels convey the smoke to the insufflation machine for filtration, and the insufflation machine conveys the filtered clean gas to the body cavity through the air inlet channels.

[0004] In the above smoke exhaust process, in order to ensure the stable pressure in the patient's body, the pressure in the patient's body needs to be measured in real time. However, the existing puncture device is generally tubular, and the diameter is generally small in order to facilitate the operation of medical staff, and a pressure measuring channel cannot be further arranged on the basis of the air inlet channel and the exhaust channel. Therefore, in order to measure the pressure in the patient's body, an external puncture device needs to be connected as an independent pressure measuring pipeline. On the one hand, the external puncture device for pressure measurement needs to be punctured on the patient's abdominal cavity again, which causes additional harm to the patient, and on the other hand, the connection pipeline between the devices is increased, which affects the operation of the surgery. SUMMARY

[0005] In order to solve at least one technical problem in the prior art, the present application provides a puncture device sleeve and a puncture device with the same. The technical scheme is as follows:

[0006] In a first aspect, the present application provides a puncture device sleeve, comprising:

[0007] A first pipe body forms a gas guide channel, and one end of the gas guide channel forms an air inlet hole;

[0008] A second pipe body is radially spaced and sleeved on the first pipe body to form a spacing space, a pipe wall near one end of the second pipe body forms an air outlet hole and a first pressure measuring hole, and a pipe wall at the other end of the second pipe body forms an exhaust hole, an air inlet hole and a second pressure measuring hole;

[0009] A separation assembly is arranged in the spacing space, and the separation assembly comprises:

[0010] A first partition member extends along the axial direction of the first pipe body and separates the interval space into a first interval passage and a second interval passage, both ends of the first interval passage are communicated with the first pressure hole and the second pressure hole respectively, the first interval passage is formed as a pressure passage, and the second interval passage is communicated with the air outlet hole.

[0011] A second partition member extends along the circumferential direction of the first pipe body, and a plurality of second partition members are arranged along the axial direction of the first pipe body, the plurality of second partition members define at least a first annular passage and a second annular passage in the interval space, the first annular passage is communicated with the air outlet hole, the second annular passage is communicated with the air inlet hole, the first annular passage is communicated with the air guide passage and formed as an air outlet passage, and the second annular passage is communicated with the second interval passage and formed as an air inlet passage.

[0012] Further, the first pipe body is provided with two air outlet communication holes in the radial direction thereof, the air outlet communication holes are communicated with the air guide passage and the first annular passage, and the air outlet communication holes are arranged corresponding to the first annular passage in the axial direction of the first pipe body.

[0013] Further, the first pipe body is provided with an air inlet communication hole, the air inlet communication hole is communicated with the second interval passage and the second annular passage.

[0014] Further, the air inlet communication hole comprises:

[0015] A recess is arranged corresponding to the second annular passage in the axial direction of the first pipe body, the recess extends towards the air guide passage and forms a recess cavity, the recess depth is greater than the thickness of the second partition member in the radial direction of the first pipe body and less than the thickness of the pipe wall of the first pipe body.

[0016] A communication part extends along the axial direction of the first pipe body, the communication part is communicated with the recess cavity and the second interval passage.

[0017] Further, the air inlet communication hole and the air inlet hole are arranged opposite to each other in the radial direction of the first pipe body.

[0018] Further, the air outlet hole is arranged corresponding to the first annular passage in the axial direction of the second pipe body, the air inlet hole is arranged corresponding to the second annular passage in the axial direction of the second pipe body, and the second pressure hole is arranged close to the first pressure hole relative to the air outlet hole and the air inlet hole in the axial direction of the second pipe body.

[0019] Further, the second tube body is formed with a connecting portion, the connecting portion is provided with an exhaust port, an air inlet port and a pressure measuring port, the exhaust port and the air inlet port are symmetrically arranged along the axis of the connecting portion, and the pressure measuring port is arranged close to the first pressure measuring hole in the connecting portion; the exhaust port is provided with a first baffle, the first baffle and the exhaust port form the exhaust hole, the air inlet port is provided with a second baffle, the second baffle and the air inlet port form the air inlet hole, and the pressure measuring port is provided with a third baffle, the third baffle and the pressure measuring port form the second pressure measuring hole.

[0020] Further, the first annular channel and the second annular channel are arranged at intervals, and a sealing ring is arranged between the first annular channel and the second annular channel.

[0021] Further, the first partition includes a first partition strip connected to the first tube body and a second partition strip connected to the second tube body, one of the first partition strip and the second partition strip is provided with a plug-in groove extending along the axis of the first tube body, and the other of the first partition strip and the second partition strip is provided with a plug-in protrusion matched with the plug-in groove.

[0022] Further, the puncture device sleeve further includes:

[0023] A cover body is arranged at one end of the second tube body close to the exhaust hole, the cover body is formed with a mounting hole, the mounting hole is coaxially arranged with the air guide channel and communicates with the air guide channel;

[0024] A sealing assembly is arranged at one end of the first tube body away from the air inlet hole, the sealing assembly includes an air blocking valve, a sealing member and a fastener, the air blocking valve is mounted at the end of the first tube body, the sealing member is arranged at one end of the air blocking valve away from the first tube body, and the sealing member is arranged at the end face of the fastening sleeve away from the first tube body.

[0025] In a second aspect, the present application provides a puncture device, which includes:

[0026] A puncture rod includes a puncture tip, a tail cap end and a rod body connecting the puncture tip and the tail cap end.

[0027] The puncture device sleeve as described in any one of the above first aspects, the puncture rod penetrates the air guide channel of the first tube body, the puncture tip is arranged outside the air guide channel from the air inlet hole, and the tail cap end is arranged outside the air guide channel from the other end of the air guide channel.

[0028] Further, the puncture device further includes:

[0029] A connecting assembly is in communication with the exhaust hole, the air inlet hole and the second pressure measuring hole at one end, and in communication with the pneumoperitoneum machine at the other end.

[0030] Further, the connecting assembly (10) comprises:

[0031] A connecting head is connected with the second pipe body;

[0032] A connecting pipe set comprises an exhaust connecting pipe, an air inlet connecting pipe and a pressure measuring connecting pipe, and the connecting pipe set is connected with the connecting head in interference fit;

[0033] A gasket is arranged between the connecting head and the connecting part;

[0034] A knob part is sleeved outside the connecting head and the connecting part, and the knob part is threadedly connected with the connecting head and the connecting part.

[0035] Further, the connecting head comprises:

[0036] A through-hole connecting part is formed with a first connecting hole corresponding to the exhaust hole, the air inlet hole and the second pressure measuring hole;

[0037] A pipe body connecting part is formed with a second connecting hole corresponding to the exhaust connecting pipe, the air inlet connecting pipe and the pressure measuring connecting pipe;

[0038] A knob connecting part is arranged between the through-hole connecting part and the pipe body connecting part, and a plurality of first limiting parts are formed on the side wall of the knob connecting part, the plurality of first limiting parts are discontinuously arranged along the circumference of the knob connecting part, and adjacent two first limiting parts form a limiting interval.

[0039] A second limiting part is arranged on the inner side wall of the knob part, the second limiting part is discontinuously arranged along the circumference of the knob part, and the second limiting part is matched with the limiting interval.

[0040] The technical scheme provided by the embodiment of the present application has at least the following beneficial effects:

[0041] 1. The trocar cannula provided by the embodiment of the present application has three functions of smoke exhaust, air inlet and pressure measurement, and can simultaneously meet the three requirements of smoke exhaust, CO2 delivery for maintaining pneumoperitoneum and real-time detection of abdominal cavity pressure change of a patient by using one trocar, compared with a conventional trocar.

[0042] 2、The puncture set provided by the embodiment of the present application concentrates multiple functions on one puncture set, avoids the need for additional puncture sets for assistance, reduces the puncture injury suffered by the patient, and further enhances the postoperative recovery effect of minimally invasive surgery;

[0043] 3、The puncture set provided by the embodiment of the present application realizes independent design of the smoke exhaust, air inlet and pressure measurement channels without changing the original diameter size of the puncture set, reasonably utilizes the internal space of the puncture set, and will not increase the surgical incision of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0045] Figure 1 The structure diagram of the puncture set provided by the embodiment of the present application is shown in the figure.

[0046] Figure 2 The structure exploded view of the puncture set provided by the embodiment of the present application is shown in the figure.

[0047] Figure 3 The connection structure diagram of the puncture set provided by the embodiment of the present application is shown in the figure.

[0048] Figure 4 The first partition structure diagram of the puncture set provided by the embodiment of the present application is shown in the figure.

[0049] Figure 5 The first partition space and the second partition space of the puncture set provided by the embodiment of the present application are shown in the figure.

[0050] Figure 6 The exhaust communication hole of the puncture set provided by the embodiment of the present application is shown in the figure.

[0051] Figure 7 The air inlet communication hole of the puncture set provided by the embodiment of the present application is shown in the figure.

[0052] Figure 8 The structure diagram of the air inlet communication hole of the puncture set provided by the embodiment of the present application is shown in the figure.

[0053] Figure 9 The structure diagram of the exhaust communication hole of the puncture set provided by the embodiment of the present application is shown in the figure.

[0054] Figure 10 The channel diagram of the puncture set provided by the embodiment of the present application is shown in the figure.

[0055] Figure 11 is a structural schematic diagram of a puncture device provided by an embodiment of the present application;

[0056] Figure 12 is a structural schematic diagram of a puncture rod provided by an embodiment of the present application;

[0057] Figure 13 is a connection structural schematic diagram of a puncture device sleeve and a connecting assembly provided by an embodiment of the present application;

[0058] Figure 14 is an exploded schematic diagram of a connecting assembly provided by an embodiment of the present application;

[0059] Figure 15 is a structural schematic diagram of a connecting head provided by an embodiment of the present application;

[0060] Figure 16 is a structural schematic diagram of a first connecting hole in a connecting head provided by an embodiment of the present application;

[0061] Figure 17 is a structural schematic diagram of a second connecting hole in a connecting head provided by an embodiment of the present application;

[0062] Figure 18 is a cross-sectional structural schematic diagram of a knob provided by an embodiment of the present application;

[0063] Figure 19 is another cross-sectional structural schematic diagram of a knob provided by an embodiment of the present application;

[0064] Figure 20 is a schematic diagram of a gas flow path in a puncture device provided by an embodiment of the present application.

[0065] In the drawings:

[0066] Puncture device sleeve 100, puncture rod 200, connecting assembly 300;

[0067] First pipe body 11, second pipe body 12, separation assembly 13, cover body 14, sealing assembly 15, puncture tip 21, rod body 22, tail cap end 23, connecting head 31, connecting pipe group 32, gasket 33, knob 34;

[0068] Air guide channel 11.1, air inlet hole 11.2, exhaust communication hole 11.3, air inlet communication hole 11.4, air outlet hole 12.1, first pressure measuring hole 12.2, exhaust hole 12.3, air inlet hole 12.4, second pressure measuring hole 12.5, connecting part 12.6, exhaust port 12.7, air inlet port 12.8, pressure measuring port 12.9, first baffle 12.10, second baffle 12.11, third baffle 12.12, anti-skid thread 12.13, first partition 13.1, second partition 13.2, first interval channel 13.3, second interval channel 13.4, annular channel 13.5, first annular channel 13.6, second annular channel 13.7, sealing ring 13.8, mounting hole 14.1, air blocking valve 15.1, sealing member 15.2, fastener 15.3, through hole connecting part 31.1, pipe body connecting part 31.2, knob connecting part 31.3, exhaust connecting pipe 32.1, air inlet connecting pipe 32.2, pressure measuring connecting pipe 32.3, second limiting part 34.1;

[0069] First partition strip 13.1.1, second partition strip 13.1.2, recess 11.4.1, communication part 11.4.2, first connecting hole 31.1.1, second connecting hole 31.2.1, first limiting part 31.3.1, limiting interval 31.3.2, first partition plate 31.3.3, second partition plate 31.3.4. DETAILED DESCRIPTION

[0070] To make the objectives, technical solutions, and advantages of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0071] It should be noted that the expressions "first" and "second" used in the embodiments of the present application are used to distinguish two same name non-identical entities or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of description, and should not be understood as a limitation of the embodiments of the present application. The subsequent embodiments will not be described one by one.

[0072] As described in the background, the existing puncture device is generally not equipped with a pressure measuring pipeline, and a puncture device for pressure measurement needs to be connected externally. Therefore, the embodiment of the present application provides a three-channel puncture device with an exhaust channel, an intake channel and a pressure measuring channel. However, if a pressure measuring channel is directly added to the existing puncture device, the overall diameter of the puncture device will be increased, which will further cause the surgical incision of the patient to be enlarged. The purpose of the embodiment of the present application is to increase an independent pressure measuring channel on the basis of the structure of the existing puncture device, without changing the diameter of the puncture device, and without causing the gas flow to be chaotic in the puncture device.

[0073] As shown in Figure 1 and Figure 2 , the embodiment of the present application provides a puncture device sleeve 100, which comprises a first pipe body 11, a second pipe body 12 and a separation assembly 13. The first pipe body 11 defines a gas guide channel 11.1, the second pipe body 12 is sleeved outside the first pipe body 11, and the second pipe body 12 and the first pipe body 11 are spaced apart to form a spacing space, and the separation assembly 13 is arranged in the spacing space formed by the first pipe body 11 and the second pipe body 12. The channel formed by the first pipe body 11 serves as the gas guide channel 11.1, and the port at one end of the gas guide channel 11.1 is an air inlet hole 11.2. The separation assembly 13 separates the spacing space into a plurality of independent channels, thereby forming an exhaust channel, an intake channel and a pressure measuring channel. Thus, the puncture device disclosed by the present application does not need to be externally connected with a separate puncture device for pressure measurement, and does not need to separately set up a pressure measuring channel outside the existing puncture device, without changing the diameter of the existing puncture device and without increasing the surgical incision of the patient.

[0074] Since the diameter of the existing puncture device sleeve 100 is small, only two channels, i.e., an intake channel and an exhaust channel, can be independently arranged, how to increase an independent exhaust channel in the internal space of the existing puncture device sleeve 100, how to change the gas guide path of the existing intake channel and exhaust channel as little as possible, and how to affect the exhaust and intake functions of the existing exhaust channel and intake channel as little as possible due to the addition of the pressure measuring channel, become difficult problems that need to be solved by the three-channel puncture device sleeve 100. The technical solutions proposed by the embodiment of the present application include:

[0075] As shown in Figure 1 and 2 , the second pipe body 12 forms an air outlet hole 12.1 and a first pressure measuring hole 12.2 on the pipe wall close to the air inlet hole 11.2 of the first pipe body 11. As shown in Figure 3As shown, the second tube body 12 is formed with an exhaust hole 12.3, an intake hole 12.4 and a second pressure measuring hole 12.5 on the tube wall of the other end away from the air suction hole 11.2. As mentioned above, the exhaust hole 12.3, the intake hole 12.4 and the first pressure measuring hole 12.2 can be in communication with external devices (for example, a pneumostasis machine). In the embodiment of the present application, the exhaust hole 12.3, the intake hole 12.4 and the first pressure measuring hole 12.2 are arranged at the same end of the second tube body 12, mainly for the convenience of communication with external devices. Exemplarily, the exhaust hole 12.3, the intake hole 12.4 and the first pressure measuring hole 12.2 can be arranged as close as possible, and it is not necessary to arrange independent external device connecting members for the exhaust hole 12.3, the intake hole 12.4 and the first pressure measuring hole 12.2.

[0076] Specifically, as shown in Figure 4 The separation assembly 13 includes a first separation piece 13.1 and a second separation piece 13.2.

[0077] As shown in Figure 5 The first separation piece 13.1 extends in the axial direction of the first tube body 11 in the interval space, and divides the interval space into a first interval passage 13.3 and a second interval passage 13.4. Exemplarily, two opposite first separation pieces 13.1 are arranged in the radial direction of the interval space, and the two first separation pieces 13.1 divide the interval space into two equal passage spaces. The first interval passage 13.3 is in communication with the first pressure measuring hole 12.2 and the second pressure measuring hole 12.5, and the first interval passage 13.3 is formed as a pressure measuring passage. The second interval passage 13.4 is in communication with the exhaust hole 12.1.

[0078] As shown in Figure 6 and Figure 7 The second separation piece 13.2 is arranged close to the exhaust hole 12.3, the intake hole 12.4 and the second pressure measuring hole 12.5 in the interval space. The second separation piece 13.2 extends in the circumferential direction of the first tube body 11, and is annular. A plurality of second separation pieces 13.2 are arranged in the axial direction of the second tube body 12, and among the plurality of second separation pieces 13.2, the second separation piece 13.2 close to the first separation piece 13.1 is connected to one end of the first separation piece 13.1. The plurality of second separation pieces 13.2 divide the interval space into a plurality of annular passages 13.5, and among the plurality of annular passages 13.5, at least a first annular passage 13.6 and a second annular passage 13.7 are included.

[0079] The structure of the above-mentioned puncture set 100 includes: an air outlet hole 12.1, a first pressure measuring hole 12.2, an air exhaust hole 12.3, an air inlet hole 12.4, and a second pressure measuring hole 12.5, five air holes, a first partition channel and a second partition channel arranged along the circumference of the spacing space, a first annular channel 13.6 and a second annular channel 13.7 arranged along the axis of the spacing space, and a gas guide channel 11.1 formed by the first pipe body 11 itself. There are many air holes and channels inside the puncture set 100. In order to facilitate the user to hold and operate, the diameter of the puncture set 100 is not enlarged to increase the wound of the patient. Therefore, it is necessary to reasonably arrange the communication relationship between the above-mentioned channels and air holes, so as to independently set the air exhaust channel, the air inlet channel, and the pressure measuring channel without interference.

[0080] In the embodiment of the present application, the gas guide channel 11.1 is formed as a pressure measuring channel and communicates with the first pressure measuring hole 12.2 and the second pressure measuring hole 12.5. The first annular channel 13.6 communicates with the air exhaust hole 12.3, and the second annular channel 13.7 communicates with the air inlet hole 12.4. The second annular channel 13.7 communicates with the gas guide channel 11.1 and forms an air exhaust channel. The second annular channel 13.7 communicates with the second partition channel 13.4 and forms an air inlet channel.

[0081] In the puncture set structure disclosed in the above-mentioned embodiment of the present application, a plurality of annular channels 13.5 are arranged along the axis of the spacing space, so that the air exhaust hole 12.3, the air inlet hole 12.4, and the second pressure measuring hole 12.5 are also arranged axially, so as to shorten the air path as much as possible. The air exhaust hole 12.3, the air inlet hole 12.4, and the second pressure measuring hole 12.5 are arranged close to the annular channel 13.5 on the second pipe body 12. Among the three air holes, the pressure measuring hole is arranged relatively close to the air inlet hole 11.2 along the axis of the second pipe body 12, the air exhaust hole 12.3 is arranged relatively far from the air inlet hole 11.2, and the air inlet hole 12.4 is arranged between the air exhaust hole 12.3 and the pressure measuring hole. The second annular channel 13.7 is arranged relatively close to the air inlet hole 11.2 along the axis of the second pipe body 12, and the first annular channel 13.6 is arranged away from the air inlet hole 11.2 along the axis of the second pipe body 12. Based on the above structure, in order to shorten the air path as much as possible, the air exhaust hole 12.3, the air inlet hole 12.4, and the first pressure measuring hole 12.2 are arranged close to one side of the first partition channel 13.3 on the second pipe body 12, so that the pressure measuring hole can directly communicate with the first partition channel 13.3.

[0082] In one embodiment, as Figure 6As shown, for the air guide channel 11.1, the positional relationship with the air outlet hole 12.3 is a radial positional relationship, and the air guide channel 11.1 is separated from the air outlet hole 12.3 by the pipe wall of the first pipe body 11, and therefore an air outlet communication hole 11.3 needs to be formed in the pipe wall of the first pipe body 11 to communicate with the air guide channel 11.1. Exemplarily, two air outlet communication holes 11.3 are arranged in a radial direction of the first pipe body 11, and the air outlet communication hole 11.3 communicates with the air guide channel 11.1 and the first annular channel 13.6, and the air outlet communication hole 11.3 corresponds to the position of the first annular channel 13.6 in the axial direction of the first pipe body 11.

[0083] In one embodiment, as shown in Figure 7 for the second spacing channel 13.4, the positional relationship with the air inlet hole 12.4 is an axial positional relationship, and therefore an air inlet communication hole 11.4 needs to be formed in the first pipe wall to communicate with the second annular channel 13.7 and bypass the first annular channel 13.6 to communicate with the second spacing channel 13.4. The air inlet communication hole 11.4 in the puncture set cannula 100 provided by the embodiment of the present application is arranged on the pipe wall of the first pipe body 11, as shown in Figure 8 the air inlet communication hole 11.4 includes a recessed portion 11.4.1 and a communication portion 11.4.2, and the recessed portion 11.4.1 corresponds to the position of the second annular channel 13.7 in the axial direction of the first pipe body 11. The recessed portion 11.4.1 extends in the radial direction of the first pipe body 11 and in the direction of the air guide channel 11.1 of the first pipe body 11, forming a recessed cavity. The recessed depth of the recessed portion 11.4.1 in the radial direction of the first pipe body 11 is greater than the thickness of the second spacer in the radial direction of the first pipe body 11, and the recessed depth of the recessed portion 11.4.1 is less than the thickness of the pipe wall of the first pipe body 11, so that the air inlet communication hole 11.4 can bypass the first annular channel 13.6 and avoid communication with the air guide channel 11.1. The communication portion 11.4.2 extends in the axial direction of the first pipe body 11 and communicates with the recessed cavity of the recessed portion 11.4.1 and the second spacing channel 13.4. Based on the structure of the air inlet communication hole 11.4 described above, the second spacing channel 13.4 can independently communicate with the second annular channel 13.7, and further independently communicate with the air inlet hole 12.4.

[0084] Exemplarily, as shown in Figure 9As shown, two exhaust communication holes 11.3 are formed on the wall of the first tube 11 in the radial direction of the first tube 11, and the exhaust communication holes 11.3 are in communication with the gas guide channel 11.1 formed by the first tube 11 and the first annular channel 13.6. The intake communication hole 11.4 is arranged opposite to the intake hole 12.4 in the radial direction of the first tube 11. On the exhaust channel, the smoke enters the first tube 11 from the gas guide channel 11.1, flows along the first annular channel 13.6 through the two exhaust communication holes 11.3 for a quarter or three-quarters of a circle, and flows out through the exhaust hole 12.3. On the intake channel, the gas enters the second annular channel 13.7 from the intake hole 12.4, passes through the intake communication hole 11.4 for half a circle, and flows out of the trocar sleeve 100 into the abdominal cavity of the patient. On the pressure measurement channel, the pressure measurement channel has no active gas input and output, and only relies on the change of the gas pressure in the patient's body cavity to cause the change of the gas pressure in the pressure measurement channel, which is fed back to the detection device of the matching equipment. If the abdominal cavity pressure of the patient is low, the gas flows into the abdominal cavity of the patient through the exhaust channel, and the pressure test can be performed. If the abdominal cavity pressure of the patient is high, the gas flows into the pneumoperitoneum machine through the exhaust channel, and the pressure test can be performed. The detection device is a pressure sensor connected to the pressure measurement channel. The pressure sensor is very sensitive, and any change in the pressure in the channel can be detected. The pressure sensor will transmit the change of the gas pressure to the control end of the matching equipment in real time, and the control end will decide whether to supplement or release CO2 to maintain the stability of the gas pressure in the patient's body cavity, that is, to maintain the dynamic balance of pneumoperitoneum.

[0085] In order to improve the air tightness between the annular channels 13.5, the first annular channel 13.6 and the second annular channel 13.7 are arranged in a spaced manner, and a sealing ring 13.8 is arranged between the first annular channel 13.6 and the second annular channel 13.7. As shown in the example, Figure 2 Six second spacers are arranged to form five annular channels 13.5, and three sealing rings 13.8 are arranged in a spaced manner in the axial direction of the spacing space.

[0086] Since the exhaust hole 12.3, the intake hole 12.4 and the pressure measurement hole need to be arranged as close as possible to facilitate the matching of the connecting member of the external equipment, but the exhaust hole 12.3, the intake hole 12.4 and the second pressure measurement hole 12.5 need to correspond to the first annular channel 13.6 and the second annular channel 13.7 and the first spacing channel 13.3, so the gas hole design needs to meet both the external equipment connection and the communication between the gas hole and the channel.

[0087] In one embodiment, as shown in the example, Figure 3As shown, the puncture device provided by the embodiment of the present application is provided with a connecting portion 12.6 formed in the second tube body 12, and an exhaust port 12.7, an air inlet port 12.8 and a pressure measuring port 12.9 are formed in the connecting portion 12.6. In the axial direction of the second tube body 12, the pressure measuring port 12.9 is arranged closest to the separation assembly 13, and the exhaust port 12.7 and the air inlet port 12.8 are arranged symmetrically along the axis of the connecting portion 12.6. A first baffle 12.10 is arranged in the exhaust port 12.7, and the first baffle 12.10 is connected with part of the edge of the exhaust port 12.7 to form an exhaust hole 12.3. A second baffle 12.11 is arranged in the air inlet port 12.8, and the second baffle 12.11 is connected with part of the edge of the air inlet port 12.8 to form an air inlet hole 12.4. A third baffle 12.12 is arranged in the pressure measuring port 12.9, and the third baffle 12.12 is connected with part of the edge of the pressure measuring port 12.9 to form a second pressure measuring hole 12.5. Exemplarily, the upper edges of the exhaust port 12.7 and the air inlet port 12.8 are quarter-arc-shaped edges, the lower edge of the pressure measuring port 12.9 is a semicircular edge, and the exhaust port 12.7, the air inlet port 12.8 and the pressure measuring port 12.9 form a circular outer edge. The first baffle 12.10 is connected with the lower edge of the exhaust port 12.7, the second baffle 12.11 is connected with the upper edge of the air inlet port 12.8, and the third baffle 12.12 is connected with the upper edge of the pressure measuring port 12.9, thereby forming the position distribution of the exhaust hole 12.3, the air inlet hole 12.4 and the pressure measuring hole in the axial direction of the second tube body 12. The puncture device sleeve 100 does not need to be provided with gas valves at each port, and can directly realize gas flow through independent exhaust channels, air inlet channels and pressure measuring channels.

[0088] As described above, the first separation piece 13.1 can be arranged as an integral piece and connected with the first tube body 11 and the second tube body 12. However, in order to facilitate the assembly and disassembly of the puncture device, the first separation piece 13.1 can be arranged as a split piece, and the first tube body 11 and the second tube body 12 are connected through the first separation piece 13.1. Figure 4 As shown, the puncture device sleeve 100 provided by the embodiment of the present application is provided with a first separation piece 13.1, which includes a first separation strip 13.1.1 and a second separation strip 13.1.2. The first separation strip 13.1.1 is connected with the tube wall of the first tube body 11, and the second separation strip 13.1.2 is connected with the tube wall of the second tube body 12. One of the first separation strip 13.1.1 and the second separation strip 13.1.2 is provided with a plug-in slot extending in the axial direction of the first tube body 11, and the other of the first separation strip 13.1.1 and the second separation strip 13.1.2 is provided with a plug-in protrusion matched with the plug-in slot. Exemplarily, the first separation strip 13.1.1 is provided with the plug-in protrusion, and the second separation strip 13.1.2 is provided with the plug-in slot.

[0089] In one embodiment, as Figure 1 , Figure 3 and Figure 5As shown, the first pressure hole 12.2 and the gas outlet hole 12.1 are both arranged in the axial direction of the puncture cannula 100 away from the air inlet hole 11.2, i.e., the air inlet hole 11.2 is a port at one end of the gas guide channel 11.1 of the first tube body 11, and the first pressure hole 12.2 and the gas outlet hole 12.1 are both arranged on the tube wall of the second tube body 12. The first pressure hole 12.2 is arranged on the second tube body 12 close to one side of the first interval channel 13.3, and the gas outlet hole 12.1 is arranged close to the second interval channel 13.4. Exemplarily, the tube wall of the second tube body 12 is provided with an anti-skid thread 12.13, and the gas inlet hole 12.4 of the exhaust channel and the first pressure hole 12.2 are arranged close to the anti-skid thread 12.13 and are kept a certain distance from the gas outlet hole 12.1 at the bottom end of the first tube body 11. On the one hand, it can be ensured that the gas inlet hole 12.4 of the exhaust channel does not interfere with the gas inlet channel during exhaust, reducing the consumption of CO2. On the other hand, it can be ensured that the gas pressure near the second pressure hole 12.5 is stable and consistent with the total gas pressure in the abdominal cavity, thereby enhancing the accuracy of the matching equipment in maintaining the balance of pneumoperitoneum.

[0090] In one embodiment, as shown in Figure 2 The puncture cannula 100 provided by the embodiment of the present application further comprises a cover body 14 connected to one end of the second tube body 12 close to the exhaust pipe, and the cover body 14 is formed with a mounting hole 14.1 coaxially arranged with and in communication with the gas guide channel 11.1.

[0091] In one embodiment, as shown in Figure 2 The puncture cannula 100 provided by the embodiment of the present application further comprises a sealing assembly 15 comprising an air blocking valve 15.1, a sealing member 15.2 and a fastener 15.3, the sealing assembly 15 being connected to the port of the first tube body 11 away from the air inlet hole 11.2, the air blocking valve 15.1 being installed at the end of the first tube body 11, the fastener 15.3 being arranged on the end face of the air blocking valve 15.1 away from the first tube body 11, and the sealing member 15.2 being sleeved on one end of the fastener 15.3 away from the first tube body 11.

[0092] The sealing member 15.2 comprises a sealing film which is shrunk and wrapped through the port to play a sealing role. The air blocking valve 15.1 is naturally closed under gas pressure to play an air blocking role. The fastener 15.3 can connect and further seal the sealing assembly 15 and the air blocking valve 15.1.

[0093] As shown in Figure 10As shown, the puncture set 100 provided by the embodiment of the present application has a second annular channel 13.7 in communication with the gas guide channel 11.1, forming an exhaust channel (path A in the figure), the second annular channel 13.7 is in communication with the second spacing channel 13.4, forming an intake channel (path B in the figure), and the gas guide channel 11.1 forms a pressure measuring channel (path C in the figure). The pressure measuring channel of the puncture set 100 is in communication with the first pressure measuring hole 12.2 and the second pressure measuring hole 12.5, and performs the pressure measuring function; the exhaust channel is in communication with the gas suction hole 11.2, and the exhaust hole 12.3 is in communication with the exhaust hole 12.3 through the exhaust communication hole 11.3, and performs the function of sucking and exhausting the smoke gas in the patient's abdominal cavity; the intake channel is in communication with the gas outlet hole 12.1, and the intake channel is in communication with the intake hole 12.4 through the intake communication hole 11.4, and performs the function of guiding the gas input by the external device into the patient's abdominal cavity. The pressure measuring channel, the exhaust channel and the intake channel cooperate with the gas guide to achieve the function of discharging smoke to maintain the pressure of the patient's abdominal cavity. Thus, the puncture set disclosed by the embodiment of the present application separates the spacing space between the first pipe body 11 and the second pipe body 12 by the first spacer and the second spacer, reasonably utilizes the spacing space in combination with the gas guide channel 11.1 formed by the first pipe body 11 itself, achieves the purpose of independently setting the exhaust channel, the intake channel and the pressure measuring channel, and does not need to increase the diameter of the puncture set.

[0094] Based on the puncture set 100 provided by the above-mentioned embodiment of the present application, the embodiment of the present application further provides a puncture set.

[0095] As shown in the figure, Figure 11 The puncture set comprises a puncture rod 200 and a puncture set 100, and the puncture rod 200 penetrates the gas guide channel 11.1 of the puncture set 100. As shown in the figure, Figure 12 The puncture rod 200 comprises a puncture tip 21, a tail cap end 23, and a rod body 22 connecting the puncture tip 21 and the tail cap end 23. The puncture tip 21 and the tail cap end 23 are both arranged outside the gas guide channel 11.1. The puncture tip 21 is used for inserting into the patient's tissue to perform the operation, and the tail cap end 23 is used for the user to hold. Further, the puncture rod 200 is inserted into the gas guide channel 11.1 from the mounting hole 14.1 of the cover body 14.

[0096] In one embodiment, as shown in the figure, Figure 13 The puncture set provided by the embodiment of the present application further comprises a connecting assembly 300. One end of the connecting assembly 300 is in communication with the exhaust hole 12.3, the intake hole 12.4 and the second pressure measuring hole 12.5, and the other end of the connecting assembly 300 is in communication with a gas insufflation machine (not shown). Exemplarily, the second pipe body 12 forms a connecting part 12.6, which can be circular, and the exhaust hole 12.3, the intake hole 12.4 and the first pressure measuring hole 12.2 are all arranged in the connecting part 12.6. The connecting part 12.6 is connected with the connecting assembly 300.

[0097] As shown in Figure 14 , the connecting assembly 300 comprises a connecting head 31, a connecting pipe set 32, a gasket 33, and a knob part 34. The connecting head 31 is connected with the connecting part 12.6. The connecting pipe set 32 comprises an exhaust connecting pipe 32.1, an intake connecting pipe 32.2, and a pressure measuring connecting pipe 32.3, and the connecting pipe set 32 is connected with the connecting head 31 in an interference fit. The gasket 33 is arranged between the connecting head 31 and the connecting part 12.6, and the knob part 34 is sleeved outside the connecting head 31 and the connecting part 12.6, and the knob part 34 is threadedly connected with the connecting head 31 and the connecting part 12.6. Exemplarily, a first partition plate 31.3.3 is added on the connecting head 31 to block the contact between the knob part 34 and the gasket 33.

[0098] As shown above, Figure 15 , the connecting head 31 comprises a through-hole connecting part 31.1, a pipe body connecting part 31.2, and a knob connecting part 31.3. As shown in Figure 16 , the through-hole connecting part 31.1 is formed with a first connecting hole 31.1.1 corresponding to the exhaust hole 12.3, the intake hole 12.4, and the second pressure measuring hole 12.5. As shown in Figure 17 , the pipe body connecting part 31.2 is formed with a second connecting hole 31.2.1 corresponding to the exhaust connecting pipe 32.1, the intake connecting pipe 32.2, and the pressure measuring connecting pipe 32.3. As shown in Figure 15 , the connecting head 31 is provided with a second partition plate 31.3.4 at one end close to the pipe body connecting part 31.2, and the gasket 33 wraps the second partition plate 31.3.4 to prevent it from falling off. The knob connecting part 31.3 is connected with the knob part 34 through a first limiting part 31.3.1. As shown in Figure 18 and Figure 19 , the knob connecting part 31.3 is discontinuously provided with a plurality of first limiting parts 31.3.1 in the circumferential direction, and a limiting interval 31.3.2 is formed between two adjacent first limiting parts 31.3.1. A second limiting part 34.1 is arranged on the inner side wall of the knob part 34, and the second limiting part 34.1 is discontinuously arranged along the circumferential direction of the knob part 34, and the second limiting part 34.1 is adapted to the limiting interval 31.3.2. Based on the above structure, the second limiting part 34.1 always interferes with the first limiting part 31.3.1 on the connecting head 31 in a natural state or during operation, so the second limiting part 34.1 is difficult to pass through the limiting interval 31.3.2 in the reverse direction. When disassembling, the knob part 34 can be removed by aligning the second limiting part 34.1 with the limiting interval 31.3.2, which is convenient for assembly and disassembly.

[0099] As shown in Figure 20As shown, after the puncture rod 200 is installed, the puncture rod 200, the first tube body 11, the second tube body 12, the cover body 14, and the sealing assembly 15 in the puncture device form a sealed space that is only in communication with the patient's pneumoperitoneum and the pneumoperitoneum machine. The first partition assembly 13 divides the space between the first tube body 11 and the second tube body 12 into a first interval channel 13.3 and a second interval channel 13.4, and the second partition assembly 13 divides the space between the first tube body 11 and the second tube body 12 away from the end close to the exhaust hole 12.3, the air inlet hole 12.4, and the second pressure measuring hole 12.5 into a first annular channel 13.6 and a second annular channel 13.7. The air guide channel 11.1 of the first tube body 11 is in communication with the first annular channel 13.6, serving as an exhaust channel that is in communication with the air inlet hole 11.2 and the exhaust hole 12.3 (path A in the figure). The first interval channel 13.3 forms a pressure measuring channel that is in communication with the first pressure measuring hole 12.2 and the second pressure measuring hole 12.5 (path C in the figure). The second interval channel 13.4 is in communication with the second annular channel 13.7, forming an air inlet channel that is in communication with the air inlet hole 12.4 and the air outlet hole 12.1 (path B in the figure). After the connecting assembly 300 is connected to the puncture device sleeve 100, the exhaust connecting pipe 32.1, the air inlet connecting pipe 32.2, and the pressure measuring connecting pipe 32.3 are in communication with the exhaust hole 12.3, the air inlet hole 12.4, and the second pressure measuring hole 12.5 of the puncture device sleeve 100, respectively, and further in communication with the exhaust channel, the air inlet channel, and the pressure measuring channel.

[0100] During a laparoscopic surgery, a large amount of smoke generated when an electric knife or other edge cutting instrument (such as the puncture rod 200) cuts tissue is sucked into the exhaust channel from the air inlet hole 11.2, and then introduced into the exhaust connecting pipe 32.1 of the connecting assembly 300 from the exhaust hole 12.3 of the puncture device sleeve 100, and further into the pneumoperitoneum machine for gas filtration. Clean gas filtered by the pneumoperitoneum machine enters the air inlet channel through the air inlet hole 12.4 of the puncture device sleeve 100 from the air inlet connecting pipe 32.2 of the connecting assembly 300, and is introduced into the patient's abdominal cavity from the air outlet hole 12.1 to maintain stable air pressure in the abdominal cavity. The pressure measuring channel has no active gas input and output, and only relies on the change of air pressure in the patient's body cavity to cause the change of air pressure in the pressure measuring channel, and then feedback to the detection device of the matching equipment for pressure detection.

[0101] All the optional technical solutions described above can be combined to form optional embodiments of the present application, which will not be described again here.

[0102] The above describes the technical solutions provided by the present application in detail, and the principles and implementation manners of the present application are described by using specific examples. The above description of the examples is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the present application. In conclusion, the content of the specification should not be understood as a limitation of the present application.

[0103] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A trocar cannula, characterized in that, include: A first tube body, the first tube body forming an air guiding channel, and an air intake hole forming one end of the air guiding channel; The second tube is radially spaced outside the first tube to form a gap space. The second tube has a connecting part. An air outlet and a first pressure measuring hole are formed on the tube wall of the second tube near the air inlet. An exhaust hole, an air inlet, and a second pressure measuring hole are formed on the tube wall of the other end of the second tube. A partition component, disposed within the interval space, divides the interval space into multiple independent channels, forming independently configured exhaust channels, intake channels, and pressure measurement channels. The partition component includes: The first partition extends along the axial direction of the first tube body, dividing the interval space into a first interval channel and a second interval channel. The two ends of the first interval channel are respectively connected to the first pressure measuring hole and the second pressure measuring hole. The first interval channel forms the pressure measuring channel, and the second interval channel is connected to the air outlet. The second partition extends circumferentially along the first tube body and has a plurality of second partitions along the axial direction of the first tube body. The plurality of second partitions define at least a first annular channel and a second annular channel within the interval space. The first annular channel communicates with the exhaust port, the second annular channel communicates with the air inlet port, the first annular channel communicates with the air guide channel to form the exhaust channel, and the second annular channel communicates with the second interval channel to form the air inlet channel.

2. The puncture cannula as described in claim 1, characterized in that, The first pipe body has two exhaust communication holes arranged opposite each other along its radial direction. The exhaust communication holes are connected to the air guide channel and the first annular channel. The exhaust communication holes are arranged in the axial direction of the first pipe body corresponding to the first annular channel.

3. The puncture cannula as described in claim 1, characterized in that, The first tube has an air inlet communication hole, which is connected to the second spacer channel and the second annular channel.

4. The puncture cannula as described in claim 3, characterized in that, The air inlet communication port includes: The recessed portion is provided in the axial direction of the first tube body corresponding to the second annular channel. The recessed portion extends towards the air guide channel to form a recessed cavity. The recessed depth of the recessed portion is greater than the thickness of the second spacer in the radial direction of the first tube body and less than the thickness of the tube wall of the first tube body. A connecting portion extends axially along the first tube body and communicates with the recessed cavity and the second spacer channel.

5. The puncture cannula as described in claim 3, characterized in that, The air inlet communication hole and the air inlet hole are arranged radially opposite to each other along the first pipe body.

6. The puncture device cannula as described in claim 1, characterized in that, The exhaust port is arranged axially with the first annular channel in the second pipe body, the air inlet is arranged axially with the second annular channel in the second pipe body, and the second pressure measuring port is arranged axially with the second pipe body, close to the first pressure measuring port relative to the exhaust port and the air inlet port.

7. The puncture device cannula as described in claim 6, characterized in that, The connecting portion of the second pipe body is provided with an exhaust port, an air inlet, and a pressure measuring port. The exhaust port and the air inlet are symmetrically arranged along the axis of the connecting portion. The pressure measuring port is located in the connecting portion near the first pressure measuring hole. The exhaust port is provided with a first baffle, which forms the exhaust hole with the exhaust port. The air inlet is provided with a second baffle, which forms the air inlet hole with the air inlet. The pressure measuring port is provided with a third baffle, which forms the second pressure measuring hole with the pressure measuring port.

8. The puncture device cannula as described in claim 1, characterized in that, The first annular channel and the second annular channel are spaced apart, and a sealing ring is provided between the first annular channel and the second annular channel.

9. The puncture cannula as described in claim 1, characterized in that, The first separator includes: a first separator bar connected to the first tube body and a second separator bar connected to the second tube body. One of the first separator bar and the second separator bar is provided with a insertion groove extending axially along the first tube body, and the other of the first separator bar and the second separator bar is provided with an insertion protrusion that matches the insertion groove.

10. The puncture cannula as described in claim 1, characterized in that, The puncture device cannula further includes: a cover body, the cover body being disposed at one end of the second tube body near the vent hole, the cover body having a mounting hole formed thereon, the mounting hole being coaxially disposed with the air guide channel and communicating with the air guide channel; A sealing assembly is disposed at the end of the first tube body away from the air intake hole. The sealing assembly includes: an air-blocking valve, a sealing element, and a fastener. The air-blocking valve is installed at the end of the first tube body. The fastener is disposed at the end of the air-blocking valve away from the first tube body. The sealing element is disposed on the end face of the fastening sleeve away from the first tube body.

11. A puncture device, characterized in that, include: A puncture rod, the puncture rod comprising: a puncture tip, a tail cap end, and a rod body connecting the puncture tip and the tail cap end; According to any one of claims 1-10, the puncture rod passes through the air channel of the first tube body, the puncture tip passes through the air inlet outside the air channel, and the tail cap passes through the other end of the air channel outside the air channel.

12. The puncture device as claimed in claim 11, characterized in that, The puncture device also includes: A connecting component, one end of which is connected to the exhaust port, the air inlet port and the second pressure measuring port, and the other end of which is connected to the pneumoperitoneum machine.

13. The puncture device as described in claim 12, characterized in that, The connection component includes: The connector is connected to the second tube body; A connecting pipe assembly, comprising: an exhaust connecting pipe, an intake connecting pipe, and a pressure measuring connecting pipe, wherein the connecting pipe assembly is interference-fitted with the connector. A gasket, wherein the gasket is disposed between the connector and the connecting portion; A knob is sleeved on the connector and the connecting part, and the knob is threadedly connected to the connector and the connecting part.

14. The puncture device as described in claim 13, characterized in that, The connector includes: A through-hole connection portion, wherein the through-hole connection portion is formed with a first connection hole corresponding to the exhaust hole, the air inlet hole, and the second pressure measuring hole; The pipe body connection part has a second connection hole corresponding to the exhaust connection pipe, the intake connection pipe and the pressure measuring connection pipe; A knob connection part is disposed between the through hole connection part and the tube body connection part. A plurality of first limiting members are formed on the side wall of the knob connection part. The plurality of first limiting members are discontinuously arranged along the circumference of the knob connection part, and two adjacent first limiting members form a limiting interval. A second limiting member is provided on the inner side wall of the knob. The second limiting member is discontinuously arranged along the circumference of the knob and is adapted to the limiting interval.

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