Laparoscopic puncture device with fixing device

Abstract

The present invention discloses a laparoscopic puncture device with a fixing device, comprising: an outer sheath structure, including a puncture seat and a puncture tube disposed at one end of the puncture seat and connected to the puncture seat; a sheath core structure, used to be inserted into the outer sheath structure; a fixing device, disposed on the outer wall of the puncture tube, comprising: a fixing part 1, movably sleeved on the outer wall of the puncture tube; a balloon fixing part, including an inner ring movably sleeved on the outer wall of the puncture tube and located below the fixing part 1, and an annular airbag disposed on the outer wall of the inner ring; a driving part, including an airbag driving unit and an inner ring driving unit. The present invention can contact the inner and outer walls of the patient's abdominal cavity respectively through the balloon fixing part and the fixing part 1 in the fixing device, and at the same time, a driving part is provided to adjust the position of the annular airbag on the outer wall of the puncture tube after driving the annular airbag to expand, thereby ensuring that the puncture tube is stably in the required position while being convenient for operation on different patients.

Description

Technical Field

[0001] The invention relates to the technical field of puncture instruments, in particular to a laparoscopic puncture instrument with a fixing device. Background Art

[0002] The laparoscopic puncture device is one of the instruments that must be used in laparoscopic surgery. The laparoscopic puncture device is inserted through the skin to pierce the patient's body wall (chest, abdomen, waist, etc.), and then one end of the puncture tube of the puncture device is placed in the abdominal cavity, thoracic cavity or retroperitoneal cavity and other body cavities. The surgical instrument is then inserted through the channel in the puncture tube to perform the corresponding surgical operation on the tissues and organs in the above-mentioned body cavities.

[0003] Publication No.: CN217510573U proposes a laparoscopic puncture device with a fixing device, the laparoscopic puncture device comprises a puncture device outer sheath, an inner tube, an outer surface fixing portion and an inner surface fixing portion, the outer surface fixing portion is threadedly connected to the puncture device outer sheath, the outer surface fixing portion can be slid downward to the outer surface of the abdomen through the thread, the inner surface fixing portion is arranged at the lower part of the puncture device outer sheath, and the inner surface fixing portion is located in the abdomen of the patient when in use;

[0004] Although the above-mentioned laparoscopic trocar can fix the outer sheath of the trocar by the outer surface fixing part and the inner surface fixing part, so that the outer sheath of the trocar will not move outward or inward during surgery, it still has the following defects when used:

[0005] The inner surface fixing portion in the above-mentioned laparoscopic puncture device cannot move on the surface of the outer sheath of the puncture device. For different patients, the height of their subcutaneous fat is inconsistent, so the puncture depth is also inconsistent. The inner surface fixing portion is a fixed setting, which is not suitable for all patients. Therefore, it can be further improved. For this purpose, we propose a laparoscopic puncture device with a fixing device. Summary of the invention

[0006] The object of the present invention is to provide a laparoscopic puncture device with a fixing device to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A laparoscopic puncture device with a fixing device, comprising:

[0009] The outer sheath structure includes a puncture seat and a puncture tube disposed at one end of the puncture seat and connected to the puncture seat;

[0010] The fixing device is arranged on the outer wall of the puncture tube, and comprises:

[0011] The first fixing part is movably mounted on the outer wall of the puncture tube and is used to contact the outer wall of the patient's abdominal cavity;

[0012] The balloon fixing part comprises an inner ring which is movably sleeved on the outer wall of the puncture tube and is located below the fixing part, and an annular airbag which is arranged on the outer wall of the inner ring, and the annular airbag is used to contact the inner wall of the patient's abdominal cavity;

[0013] A driving unit, comprising an airbag driving unit and an inner ring driving unit, wherein the airbag driving unit is used to drive the annular airbag to expand, and the inner ring driving unit is used to drive the inner ring to move toward the fixing unit;

[0014] The inner ring driving unit comprises:

[0015] Two groups of rope bodies, one end of each group of rope bodies extends to the inner cavity of the inner ring, and the other end extends into the puncture seat and is wound around the outer wall of the second manual rotating rod, and one end of the second manual rotating rod penetrates the side wall of the puncture seat for manual rotation by an operator;

[0016] The locking piece is arranged on the inner ring and used for fixing the inner ring and the puncture tube. The locking piece is also connected to one end of the rope body so as to release the fixing state of the inner ring and the puncture tube when the rope body is wound by manually rotating the second rod.

[0017] A further improvement is that the fixing portion 1 comprises:

[0018] The movable block is threadedly sleeved on the outer wall of the puncture tube;

[0019] The silicone plate is arranged at one end of the movable block facing the balloon fixing part and is movably sleeved on the outside of the puncture tube.

[0020] A further improvement is that the outer sheath structure also includes an annular groove opened on the outer wall of the puncture tube and for the inner ring to be inserted into, vertical grooves are symmetrically opened on both sides of the outer wall of the annular groove, and one end of the vertical groove extends to the upper end of the outer wall of the puncture tube, and the two groups of rope bodies are respectively located in the two vertical grooves.

[0021] A further improvement is that the airbag drive unit comprises:

[0022] Two groups of connecting air pipes are respectively located in the two vertical notches, one end of which passes through the inner ring and is connected to the annular airbag, and the other end extends into the puncture seat and is wound around the outer wall of the manual rotating rod and then connected to the connecting seat. One end of the manual rotating rod passes through the side wall of the puncture seat. The connecting seat is located outside the puncture seat and is connected to one end of the three-way valve through the air supply pipe. The other two ends of the three-way valve are respectively connected to the installation air pipe and the air inlet pipe, and the air inlet pipe is connected to the puncture tube;

[0023] The detection component is arranged on the connecting seat and is connected with the connecting air pipe through a branch pipe.

[0024] A further improvement is that the top wall of the vertical slot, the outer wall of the puncture seat and the inner wall of the puncture seat are all provided with guide members for guiding the connecting trachea and the rope body.

[0025] A further improvement is that the detection element comprises:

[0026] A valve seat is connected to the branch pipe, one end of the valve seat is detachably connected to a transparent bottle, and an indicator that changes color when in contact with gas is arranged in the transparent bottle;

[0027] The valve core is movably arranged in the inner cavity of the valve seat, and one end of the valve core is connected to the inner wall of the valve seat through a spring;

[0028] A latch, which is inserted into the valve seat and passes through the valve core, and is used to fix the valve core;

[0029] After the latch is separated from the valve core, when the annular airbag squeezes the inner wall of the patient's abdominal cavity, the gas in the annular airbag drives the valve core to move into the transparent bottle and contact the indicator, so that the indicator changes color.

[0030] A further improvement is that the locking member comprises:

[0031] A moving block is movably arranged in the inner cavity of the inner ring and connected to one end of the rope body, one end of which is connected to the inner wall of the inner ring through an elastic member, and one side of the moving block is provided with an arc-shaped convex portion;

[0032] A locking block is movably inserted in the inner wall of the inner ring, and one end of the locking block is in sliding contact with the arc-shaped convex portion, and the other end extends into the vertical notch. The locking block is connected to the inner wall of the inner ring through the second elastic member, and is used to drive the locking block to move toward the inner cavity of the inner ring when the locking block is offset from the arc-shaped convex portion;

[0033] A plurality of slots are evenly arranged in a vertical array on the surface wall of the vertical notch for the other end of the locking block to be inserted.

[0034] A further improvement is that it also includes a sheath-core structure inserted into the outer sheath structure; the sheath-core structure includes:

[0035] A core rod, one end of which is provided with a puncture head, and the other end is connected to a cover body, wherein the puncture head is a transparent puncture head;

[0036] The cap body is movably sleeved on the outside of the core rod, and the inner wall thereof is provided with a sealing member 2 for sealing the connection between the core rod and the cap body. One end of the cap body is detachably connected to the puncture seat through a buckle structure 1, and the other end of the cap body is detachably connected to the cover body through a buckle structure 2;

[0037] The puncture seat is provided with a through hole for inserting the core rod and communicating with the puncture tube, and a sealing member 1 is provided in the through hole and above the air inlet pipe.

[0038] A further improvement is that a socket connected to the inner cavity of the cover body and the inner cavity of the core rod is formed through the top of the cover body, an assembly port connected to the inner cavity of the cover body is formed on an outer wall on one side of the cover body, and a holding block is rotatably provided in the assembly port, an arc-shaped opening is formed at one end of the holding block located in the inner cavity of the cover body, and an arc-shaped flexible block is provided on the inner wall of the arc-shaped opening, and the holding block can be rotatably passed through the arc-shaped opening to press the tubular medical device passing through the socket.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The present invention uses the balloon fixing part and the fixing part 1 in the fixing device to contact the inner and outer walls of the patient's abdominal cavity respectively, thereby limiting the movement of the puncture tube in the patient's abdominal cavity, so as to reduce the use risk caused by the shaking of the puncture device. At the same time, a driving part is provided to adjust the position of the annular airbag on the outer wall of the puncture tube after driving the annular airbag to expand. This method does not need to adjust the puncture depth of the puncture tube to make the balloon fixing part contact with the inner wall of the patient, ensuring that the puncture tube is stably in the required position while being convenient for operation on different patients.

[0041] The driving part of the present invention also has a locking member, which can fix the inner ring to the puncture tube after driving the inner ring to drive the annular airbag to the desired position, thereby ensuring the strength of the annular airbag and the fixing part to fix the puncture tube, and further preventing the risk caused by the unstable fixation of the puncture tube;

[0042] The driving part of the present invention also has a detection component. After the inner ring is driven to drive the annular airbag to squeeze the inner wall of the patient's abdominal cavity, the gas in the annular airbag can enter the valve seat through the connecting trachea and the branch pipe to drive the valve core to move, and then enter the transparent bottle to contact the indicator, so that the indicator changes color to remind the operator, so that the operator can understand the position of the annular airbag, reduce the error of manual judgment, and greatly improve the safety of the puncture device. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the structure of the puncture device of the present invention;

[0044] Figure 2 It is a schematic diagram of the outer sheath structure of the present invention;

[0045] Figure 3 For the present invention Figure 2 Partial structural section view;

[0046] Figure 4 For the present invention Figure 3 A magnified view of the structure A;

[0047] Figure 5 It is a schematic diagram of the local structure of the inner cavity of the puncture seat of the present invention;

[0048] Figure 6It is a cross-sectional view of the detection component structure of the present invention;

[0049] Figure 7 It is a schematic diagram of the sheath-core structure of the present invention;

[0050] Figure 8 For the present invention Figure 7 Structural cross-section view.

[0051] In the figure: 100, outer sheath structure; 101, puncture seat; 102, puncture tube; 103, annular notch; 104, vertical notch; 105, seal 1; 200, sheath core structure; 201, core rod; 202, puncture head; 203, cap body; 204, buckle structure 1; 205, buckle structure 2; 206, cover body; 207, jack; 208, holding block; 209, arc-shaped mouth; 210, seal 2; 300, fixing device; 301, movable block; 302. Silicone plate; 303. Annular airbag; 304. Inner ring; 305. Moving block; 306. Arc-shaped convex part; 307. Connecting air pipe; 308. Rope body; 309. Manual rotating rod 1; 310. Manual rotating rod 2; 311. Connecting seat; 312. Installing air pipe; 313. Three-way valve; 314. Air supply pipe; 315. Transparent bottle; 316. Valve seat; 317. Valve core; 318. Spring; 319. Latch; 320. Locking block; 321. Slot. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Please see attached Figure 1-Figure 5 , a laparoscopic puncture device with a fixing device, comprising:

[0054] The outer sheath structure 100 includes a puncture seat 101 and a puncture tube 102 disposed at one end of the puncture seat 101 and connected to the puncture seat 101. After the puncture tube 102 is inserted into the patient's abdominal cavity, it can serve as a passage for surgical instruments to enter the patient's abdominal cavity;

[0055] The sheath-core structure 200 is used to be inserted into the outer sheath structure 100;

[0056] The fixing device 300 is disposed on the outer wall of the puncture tube 102 and includes:

[0057] The first fixing part is movably sleeved on the upper end of the outer wall of the puncture tube 102 and is used to contact the outer wall of the patient's abdominal cavity;

[0058] The balloon fixing part includes an inner ring 304 movably sleeved on the outer wall of the puncture tube 102 and located below the fixing part 1, and an annular airbag 303 arranged on the outer wall of the inner ring 304. The annular airbag 303 is used to contact the inner wall of the patient's abdominal cavity. After the puncture device is inserted into the patient's abdominal cavity, the position of the fixing part 1 is adjusted to make it contact with the outer wall of the patient's abdominal cavity, and then the annular airbag 303 is expanded and its position is adjusted to make it contact with the inner wall of the patient's abdominal cavity, thereby limiting the puncture tube 102 from sliding outward or inward, reducing the risk of surgery due to unstable fixation of the puncture device;

[0059] The driving part includes an airbag driving unit and an inner ring driving unit, wherein the airbag driving unit is used to drive the annular airbag 303 to expand, and the inner ring driving unit is used to drive the inner ring 304 to move toward the fixing part. Since the depths of the patient's abdominal wall muscles and fascia are inconsistent, the annular airbag 303 can be expanded first after the puncture device is inserted into the patient's abdominal cavity, and then the position of the annular airbag 303 on the puncture tube 102 can be adjusted to make it contact with the inner wall of the patient's abdominal cavity. This method does not need to adjust the depth of the puncture tube 102 to ensure that the annular airbag 303 and the fixing part are respectively in contact with the inner and outer walls of the patient's abdominal cavity, and will not change the puncture depth of the puncture tube 102, so that one end of the puncture tube 102 is at the required position in the patient's abdominal cavity to ensure the quality of subsequent surgical operations.

[0060] Preferably, the fixing part 1 of this embodiment includes:

[0061] The movable block 301 is threadedly sleeved on the outer wall of the puncture tube 102, and an external thread groove structure is provided on the outer wall of the puncture tube 102. The external thread groove structure not only facilitates the movable block 301 to move to a desired position on the outer wall of the puncture tube 102, but also helps the puncture device to be better fixed in the patient's abdominal cavity;

[0062] The silicone plate 302 is arranged at one end of the movable block 301 facing the balloon fixing part and is movably sleeved on the outside of the puncture tube 102. The silicone plate 302 is made of silicone material and contacts the outer wall of the patient's abdominal cavity without causing discomfort to the patient.

[0063] Preferably, the outer sheath structure 100 of this embodiment also includes an annular groove 103 opened on the outer wall of the puncture tube 102 and for the inner ring 304 to be inserted. The outer diameter of the inner ring 304 is less than or equal to the outer diameter of the puncture tube 102, so that it can better enter the patient's abdominal cavity with the puncture tube 102. Vertical grooves 104 are symmetrically opened on both sides of the outer wall of the annular groove 103, and one end of the vertical groove 104 extends to the upper end of the outer wall of the puncture tube 102.

[0064] Preferably, the airbag drive unit of this embodiment includes:

[0065] Two groups of connecting air tubes 307 respectively located in the two vertical notches 104 prevent the connecting air tubes 307 from affecting the insertion of the puncture device into the patient's abdominal cavity and will not cause discomfort to the patient. One end of the two groups of connecting air tubes 307 penetrates the inner ring 304 and is connected to the annular air bag 303, and the other end extends to the puncture seat 101 and is wound around the outer wall of the manual rotating rod 309, and then penetrates the outer wall of the puncture seat 101 and is connected to the connecting seat 311. One end of the manual rotating rod 309 penetrates the side wall of the puncture seat 101 for manual rotation by the operator. One end of the manual rotating rod 309 that penetrates the side wall of the puncture seat 101 is provided with a hand wheel or a disc-shaped structure for manual rotation by the operator. The connecting seat 311 is arranged on the outer wall of the puncture seat 101. The connecting seat 311 is connected to one end of a three-way valve 313 through an air supply pipe 314. The other two ends of the three-way valve 313 are respectively connected to an installation air tube 312 for connecting to an external air source and an air inlet pipe connected to the puncture tube 102.

[0066] The external air source may be an inflatable device, etc. The three-way valve 313 is a conventional structure in the art. By operating the three-way valve 313, the installation air pipe 312 and the air inlet pipe can be controlled to be connected or the installation air pipe 312 and the air supply pipe 314 can be controlled to be connected;

[0067] The working principle of the airbag drive unit is as follows:

[0068] The puncture tube 102 is inserted into the patient's abdominal cavity through the sheath-core structure 200, and then the three-way valve 313 is controlled to connect the installation air tube 312 and the air supply tube 314, and at the same time, the installation air tube 312 is connected to the external air source, and the external air source allows the gas to enter the installation air tube 312 and then enter the connecting seat 311, and then enter the annular airbag 303 through the connecting air tube 307 to expand the annular airbag 303. After the annular airbag 303 expands, the three-way valve 313 can be controlled to disconnect the installation air tube 312 and the air supply tube 314; when the gas in the annular airbag 303 is discharged, the three-way valve 313 is controlled to connect the installation air tube 312 and the air supply tube 314, and the external air source and the installation air tube 312 are separated;

[0069] The detection member is arranged on the connecting seat 311 and is connected to the connecting trachea 307 through a branch pipe, and is used to detect whether the annular airbag 303 is in contact with the inner wall of the patient's abdominal cavity.

[0070] Preferably, the inner ring driving unit of this embodiment includes:

[0071] Two groups of rope bodies 308 are respectively located in two vertical slots 104 to prevent the rope bodies 308 from affecting the insertion of the puncture device into the patient's abdominal cavity. The rope bodies 308 are, for example, stainless steel wire ropes or tungsten wire ropes. One end of the two groups of rope bodies 308 extends to the inner cavity of the inner ring 304, and the other end extends into the puncture seat 101 and is wound around the outer wall of the manual rotating rod 310. One end of the manual rotating rod 310 penetrates the side wall of the puncture seat 101 for manual rotation by the operator. One end of the manual rotating rod 310 that penetrates the side wall of the puncture seat 101 is provided with a hand wheel or a disc-shaped structure for manual rotation by the operator.

[0072] The locking member is disposed on the inner ring 304 and is used to fix the inner ring 304 and the puncture tube 102. The locking member is also connected to one end of the rope body 308 to release the fixing state of the inner ring 304 and the puncture tube 102 when the manual rotating rod 2 310 winds the rope body 308.

[0073] The working principle of the inner ring driving unit is as follows: after the annular airbag 303 is inflated, the rope body 308 can be rolled up by rotating the manual rotating rod 2 310, and then the rope body 308 causes the locking member to release the fixed state of the inner ring 304 and the puncture tube 102, and at the same time, the inner ring 304 is pulled to drive the annular airbag 303 to move in the direction close to the silicone plate 302. It should be noted that at this time, the manual rotating rod 1 309 can be rotated at the same time to roll up one end of the connecting trachea 307, so that the connecting trachea 307 will not bend in the patient's abdominal cavity, and at the same time, the movement of the inner ring 304 is limited when the rope body 308 is subsequently unwound. The trachea 307 is wound on a manual rotating rod 309. When one end of the trachea 307 connected to the annular airbag 303 is rolled up, the other end of the trachea 307 is released. When one end of the trachea 307 connected to the annular airbag 303 is released, the other end of the trachea 307 is rolled up. After the inner ring 304 is pulled by the rope body 308 to move so that the annular airbag 303 is close to the inner wall of the patient's abdominal cavity, the rope body 308 is released. Since the inner ring 304 is restricted by the trachea 307, it will not move downward when the rope body 308 is unwound, so the locking piece is reset to fix the inner ring 304 to the puncture tube 102.

[0074] Preferably, the top wall of the vertical slot 104, the outer wall of the puncture seat 101 and the inner wall of the puncture seat 101 of this embodiment are all provided with guide members for guiding the connecting trachea 307 and the rope body 308. The guide members are, for example, structures such as micro pulleys, limit blocks or limit plates, to ensure that the connecting trachea 307 and the rope body 308 can move smoothly and accurately along a predetermined path and will not cause discomfort to the patient because they are in the vertical slot 104.

[0075] Please see attached Figure 6 As a preference, the detection element of this embodiment includes:

[0076] The valve seat 316 is connected to the branch pipe, for example, Figure 6 It can be seen that the inner cavity of the valve seat 316 is T-shaped in vertical cross-section, and the diameter of the upper end of the inner cavity is larger than the diameter of the lower end of the inner cavity. The branch pipe is specifically connected to the lower end of the inner cavity of the valve seat 316. One end of the valve seat 316 is detachably connected to a transparent bottle 315. The transparent bottle 315 is provided with an indicator that changes color after contacting with gas. The indicator is, for example, an oxygen indicator, etc. Figure 6 As shown, the transparent bottle 315 is inverted and detachably connected to the top of the valve seat 316. The two can be detachably connected by a thread or a buckle structure. It should be noted that if the transparent bottle 315 is inverted and connected to one end of the valve seat 316, an interception net can be set at the bottle mouth of the transparent bottle 315 to prevent the indicator from entering the valve seat 316.

[0077] The valve core 317 is movably disposed in the inner cavity of the valve seat 316, and one end of the valve core 317 is connected to the inner wall of the valve seat 316 through a spring 318. Figure 6 As shown, the valve core 317 is located at a stepped port formed between the upper end and the lower end of the inner cavity of the valve seat 316, and the diameter of the valve core 317 is smaller than the diameter of the upper end of the inner cavity of the valve seat 316 and larger than the diameter of the lower end of the inner cavity of the valve seat 316;

[0078] The latch 319 is inserted into the valve seat 316 and penetrates the valve core 317, and is used to fix the valve core 317. When the annular airbag 303 is inflated by gas, the valve core 317 will not move toward the upper end of the inner cavity of the valve seat 316 under the action of the latch 319 due to the gas pressure, thereby preventing the gas from entering the transparent bottle 315.

[0079] When the annular airbag 303 expands and drives the inner ring 304 to move, the pin 319 can be pulled out to move away from the valve core 317 (but the pin 319 does not separate from the valve seat 316). At this time, the valve core 317 is in a movable state. As the annular airbag 303 contacts the inner wall of the patient's abdominal cavity and is squeezed, the gas in the annular airbag 303 enters the valve seat 316 through the connecting trachea 307 and the branch tube, driving the valve core 317 to move, and then the gas enters the transparent bottle 315 and contacts the indicator, causing the indicator to change color.

[0080] Preferably, the locking member of this embodiment includes:

[0081] The moving block 305 is movably disposed in the inner cavity of the inner ring 304 and connected to one end of the rope body 308. One end of the moving block 305 is connected to the inner wall of the inner ring 304 through an elastic member 1. The elastic member 1 is, for example, a spring, and is used to drive the moving block 305 to reset when the rope body 308 is unwound. An arc-shaped protrusion 306 is integrated on one side of the moving block 305.

[0082] The locking block 320 is movably inserted in the inner wall of the inner ring 304, and a ball for slidingly contacting the arc-shaped protrusion 306 is embedded at one end of the locking block 320, and the other end extends into the vertical notch 104. The locking block 320 is connected to the inner wall of the inner ring 304 through the second elastic member, and is used to drive the locking block 320 to move toward the inner cavity of the inner ring 304 when the ball of the locking block 320 is staggered with the arc-shaped protrusion 306. The second elastic member is, for example, a spring;

[0083] A plurality of groups of slots 321 are evenly arranged in a vertical array on the surface wall of the vertical notch 104 for the other end of the locking block 320 to be inserted into.

[0084] The working principle of the locking member is as follows: after the annular airbag 303 is inflated, the manual rotating rod 2 310 is first rotated to reel in the rope 308. Since the locking block 320 is in a slot 321, the rope 308 pulls the moving block 305 to move, so that the arc-shaped protrusion 306 on the moving block 305 is staggered with the ball of the locking block 320, and then the locking block 320 is disengaged from the slot 321 under the action of the elastic member 2. At this time, the inner ring 304 is in an active state, and then the manual rotating rod 1 309 and the manual rotating rod 2 310 are synchronously rotated to reel in the rope 308 and connect the airbag. Tube 307, so that the inner ring 304 drives the annular airbag 303 to move. When the color change of the indicator in the transparent bottle 315 is observed, the manual rotating rod 2 310 is rotated in the opposite direction to unwind the rope body 308. At this time, under the action of the elastic member 1, the moving block 305 is reset, so that the arc-shaped protrusion 306 corresponds to the ball of the locking block 320 again, and the other end of the locking block 320 is driven to be inserted into the corresponding slot 321, completing the fixation of the inner ring 304 and the puncture tube 102, thereby ensuring that the annular airbag 303 and the fixing part 1 effectively limit the movement of the puncture tube 102.

[0085] Please see attached Figure 7 -Attached Figure 8 Preferably, the sheath-core structure 200 of this embodiment includes:

[0086] The core rod 201 has a puncture head 202 at one end and a cover body 206 at the other end. The outer diameter of the core rod 201 can be adapted to the inner diameter of the puncture tube 102. The puncture head 202 is a transparent puncture head, so that one end of some medical instruments can enter the puncture head 202 for photography and other operations. The puncture head 202 is conical in shape, which is used to make a better incision so that the puncture tube 102 can enter the abdominal cavity, and the fascia damage and bleeding at the puncture site during puncture are reduced, so that the puncture is safe and controllable, and the safety of the puncture is increased;

[0087] The cap body 203 is movably sleeved on the outside of the core rod 201, and its inner wall is provided with a sealing member 210 for sealing the connection between the core rod 201 and the cap body 203. The sealing member 210 is made of rubber material. One end of the cap body 203 is detachably connected to the puncture seat 101 through a snap structure 1 204, and the other end of the cap body 203 is detachably connected to the cover body 206 through a snap structure 205. The snap structure 1 204 and the snap structure 205 are both conventional structures in the art and are not described in detail here.

[0088] The puncture seat 101 is provided with a through hole for inserting the core rod 201 and communicating with the puncture tube 102. A sealing member 105 is provided in the through hole and above the air inlet pipe. The sealing member 105 is made of elastic rubber material.

[0089] The working principle is as follows: after the puncture tube 102 is fixed in the patient's abdominal cavity by the fixing device 300, gas can be supplied to the installation trachea 312 through an external gas source, and the gas enters the puncture tube 102 through the installation trachea 312 and the air inlet tube, so that the patient's abdominal cavity is inflated to form pneumoperitoneum, and then the gas injection is stopped to keep the patient's abdominal cavity in pneumoperitoneum;

[0090] When in use, the core rod 201 and the puncture head 202 can be pulled out through the cover body 206, and the puncture tube 102 can be left in the patient's abdominal cavity. The puncture tube 102 can be used as an instrument channel. The instrument is inserted into the patient's abdominal cavity through the puncture tube 102 to perform surgery. During the operation, if a larger specimen needs to be taken out, the larger specimen can be taken out from the opening by removing the cap body 203.

[0091] Preferably, a socket 207 communicating with the inner cavity of the cover body 206 and the inner cavity of the core rod 201 is formed through the top of the cover body 206 of the present embodiment, an assembly port communicating with the inner cavity of the cover body 206 is formed on the outer wall of one side of the cover body 206, and a holding block 208 is rotatably provided in the assembly port, the holding block 208 is L-shaped in vertical cross-section, and the holding block 208 is rotatably connected to the inner wall of the assembly port by a rotating shaft structure provided in the middle thereof, an arc-shaped opening 209 is formed at one end of the holding block 208 located in the inner cavity of the cover body 206, and an arc-shaped flexible block is provided on the inner wall of the arc-shaped opening 209, the holding block 208 can be rotated through the arc-shaped opening 209 to press a tubular medical device passing through the socket 207, the tubular medical device being, for example, a laparoscope, and when the holding block 208 is rotated to a preset angle, its arc-shaped opening 209 coincides with the axis of the socket 207.

[0092] The working principle is as follows: when it is necessary to take an image of the patient's abdominal cavity, after the puncture tube 102 is fixed in the patient's abdominal cavity by the fixing device 300, the core rod 201 and the puncture head 202 are not pulled out temporarily, and a tubular medical device, such as a laparoscope, is inserted from the socket 207. The end of the laparoscope with a micro camera is placed at the puncture head 202 to collect images of the patient's abdominal cavity. In order to prevent the laparoscope from moving, the holding block 208 is pressed to rotate the holding block 208. The holding block 208 presses the outer wall of the laparoscope against the socket 207 through the arc-shaped opening 209 and the arc-shaped flexible block, so that the laparoscope is not easily moved during use.

[0093] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laparoscopic puncture device with a fixing device, characterized in that: include: The outer sheath structure (100) comprises a puncture seat (101) and a puncture tube (102) disposed at one end of the puncture seat (101) and connected to the puncture seat (101); The fixing device (300) is arranged on the outer wall of the puncture tube (102), and comprises: The first fixing part is movably sleeved on the outer wall of the puncture tube (102) and is used to contact the outer wall of the patient's abdominal cavity; The balloon fixing part comprises an inner ring (304) movably sleeved on the outer wall of the puncture tube (102) and located below the fixing part, and an annular airbag (303) arranged on the outer wall of the inner ring (304), wherein the annular airbag (303) is used to contact the inner wall of the patient's abdominal cavity; A driving unit, comprising an airbag driving unit and an inner ring driving unit, wherein the airbag driving unit is used to drive the annular airbag (303) to expand, and the inner ring driving unit is used to drive the inner ring (304) to move toward the fixing part; The inner ring driving unit comprises: Two groups of rope bodies (308), one end of each of the rope bodies (308) extends into the inner cavity of the inner ring (304), and the other end extends into the puncture seat (101) and is wound around the outer wall of the second manual rotating rod (310), and one end of the second manual rotating rod (310) penetrates the side wall of the puncture seat (101) for manual rotation by an operator; A locking member is provided on the inner ring (304) and is used to fix the inner ring (304) and the puncture tube (102). The locking member is also connected to one end of the rope body (308) so as to release the fixing state of the inner ring (304) and the puncture tube (102) when the rope body (308) is wound around the manual rotating rod (310); The airbag driving unit comprises: two groups of connecting air pipes (307), one end of which passes through the inner ring (304) and then connects to the annular airbag (303), and the other end extends into the puncture seat (101) and is wound around the outer wall of the manual rotating rod (309) and then connects to the connecting seat (311), one end of the manual rotating rod (309) passes through the side wall of the puncture seat (101), the connecting seat (311) is located outside the puncture seat (101) and is connected to one end of a three-way valve (313) through an air supply pipe (314), and the other two ends of the three-way valve (313) are respectively connected to the installation air pipe (312) and the air inlet pipe, and the air inlet pipe is connected to the puncture tube (102); The detection member is arranged on the communication seat (311) and is connected to the connecting air pipe (307) through a branch pipe; the detection member comprises: A valve seat (316) is connected to the branch pipe, one end of the valve seat (316) is connected to a transparent bottle (315), and an indicator that changes color when in contact with gas is provided in the transparent bottle (315); A valve core (317) is disposed in the inner cavity of the valve seat (316), one end of which is connected to the inner wall of the valve seat (316) via a spring (318); A latch (319) is inserted into the valve seat (316) and penetrates the valve core (317) to fix the valve core (317); After the latch (319) is separated from the valve core (317), when the annular airbag (303) squeezes the inner wall of the patient's abdominal cavity, the gas in the annular airbag (303) drives the valve core (317) to move into the transparent bottle (315) and contact the indicator, so that the indicator changes color.

2. The laparoscopic puncture device according to claim 1, characterized in that: The fixing part 1 comprises: A movable block (301) is threadably sleeved on the outer wall of the puncture tube (102); The silicone plate (302) is arranged at one end of the movable block (301) facing the balloon fixing portion and is movably sleeved on the outside of the puncture tube (102).

3. The laparoscopic puncture device according to claim 1, characterized in that: The outer sheath structure (100) further comprises an annular notch (103) formed on the outer wall of the puncture tube (102) and into which the inner ring (304) is inserted. Vertical notches (104) are symmetrically formed on both sides of the outer wall of the annular notch (103), and one end of the vertical notch (104) extends to the upper end of the outer wall of the puncture tube (102). The two groups of rope bodies (308) are respectively located in the two vertical notches (104).

4. The laparoscopic puncture device according to claim 3, characterized in that: The two groups of connecting air pipes (307) are respectively located in the two vertical slots (104).

5. The laparoscopic puncture device according to claim 4, characterized in that: The top wall of the vertical slot (104), the outer wall of the puncture seat (101) and the inner wall of the puncture seat (101) are all provided with guide members for guiding the connecting air pipe (307) and the rope body (308).

6. The laparoscopic puncture device according to claim 1, characterized in that: One end of the valve seat (316) is detachably connected to the transparent bottle (315), and the valve core (317) is movably disposed in the inner cavity of the valve seat (316).

7. The laparoscopic puncture device according to claim 3, characterized in that: The locking member comprises: A moving block (305) is movably disposed in the inner cavity of the inner ring (304) and connected to one end of the rope body (308), one end of which is connected to the inner wall of the inner ring (304) through an elastic member, and an arc-shaped convex portion (306) is provided on one side of the moving block (305); A locking block (320) is movably inserted into the inner wall of the inner ring (304), and one end of the locking block (320) is in sliding contact with the arc-shaped protrusion (306), and the other end extends into the vertical notch (104). The locking block (320) is connected to the inner wall of the inner ring (304) through a second elastic member, and is used to drive the locking block (320) to move toward the inner cavity of the inner ring (304) when the locking block (320) and the arc-shaped protrusion (306) are offset; A plurality of groups of slots (321) are evenly arranged in a vertical array on the surface wall of the vertical notch (104) for the other end of the locking block (320) to be inserted.

8. The laparoscopic puncture device according to claim 1, characterized in that: It also includes a sheath-core structure (200) inserted into the outer sheath structure (100); the sheath-core structure (200) includes: A core rod (201) having a puncture head (202) at one end and a cover body (206) at the other end, wherein the puncture head (202) is a transparent puncture head; The cap body (203) is movably sleeved on the outside of the core rod (201), and the inner wall thereof is provided with a second sealing member (210) for sealing the connection between the core rod (201) and the cap body (203); one end of the cap body (203) is detachably connected to the puncture seat (101) via a first snap-fit ​​structure (204), and the other end of the cap body (203) is detachably connected to the cover body (206) via a second snap-fit ​​structure (205); The puncture seat (101) is provided with a through hole for inserting the core rod (201) and communicating with the puncture tube (102), and a sealing member (105) is provided in the through hole and above the air inlet pipe.

9. The laparoscopic puncture device according to claim 8, characterized in that: The top of the cover body (206) is provided with a plug hole (207) communicating with the inner cavity of the cover body (206) and the inner cavity of the core rod (201); an outer wall on one side of the cover body (206) is provided with an assembly opening communicating with the inner cavity of the cover body (206); a holding block (208) is rotatably provided in the assembly opening; an arc-shaped opening (209) is provided at one end of the holding block (208) located in the inner cavity of the cover body (206); an arc-shaped flexible block is provided on the inner wall of the arc-shaped opening (209); the holding block (208) can be rotated through the arc-shaped opening (209) to press the tubular medical device passing through the plug hole (207).

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