A normally closed suction and flushing device for laparoscopic surgery and a method of using the same

Abstract

The present invention relates to a normally closed suction irrigator for laparoscopic surgery and a method for using the same. An upper cover can rotate relative to a lower cover to cover the lower cover or remove the cover. A Y-shaped hose assembly includes a straight tube body and a flushing hose and a suction hose formed by branching at one end of the straight tube body. A flushing connector is inserted at the end of the flushing hose, and a suction connector is inserted at the end of the suction hose. A flushing button assembly is used to control the connection and closure of the flushing hose and the straight tube body. When the flushing button assembly is in a normal state, the flushing hose and the straight tube body are normally closed. When the flushing button assembly is pushed upward, the flushing hose and the straight tube body are connected. The suction button assembly is used to control the connection and closure of the suction hose and the straight tube body. When the suction button assembly is in a normal state, the suction hose and the straight tube body are normally closed. When the suction button assembly is pushed upward, the suction hose and the straight tube body are connected. In the present application, the Y-shaped hose assembly is easy to replace, thereby reducing medical waste.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a normally closed suction irrigator for laparoscopic surgery and a method for using the same. Background Art

[0002] During laparoscopic surgery, there will be blood or other residual tissue in the surgical area. At this time, a suction flusher is needed to flush out the blood and other residues so that the next operation can proceed smoothly. Existing suction flushers are generally divided into two types: disposable and replaceable suction straws. Disposable suction flushers cannot have replaceable suction straws. If the suction straws are blocked, multiple disposable suction flushers may be required during an operation, which increases the patient's medical expenses on the one hand and generates more medical waste on the other hand, which is not environmentally friendly. Therefore, most hospitals currently advocate the use of suction flushers with replaceable suction straws.

[0003] However, the existing suction irrigators with replaceable flushing and suction tubes have the disadvantage of being difficult to replace flushing and suction tubes due to unreasonable structural design. For example, a holdable button flushing and suction device disclosed in the patent with announcement number CN203029800U has one channel of the dual-channel interface fixedly connected to the suction interface with a hose, and the other channel fixedly connected to the flushing interface with a hose. The suction interface and the flushing interface are respectively inserted into the tail of the handle and fixed with a rear nut, which is inconvenient to disassemble and assemble. In addition, the flushing and suction buttons and the suction buttons are installed on the upper side of the handle. The doctor holds the handle and needs to press the button with his thumb, which is inconvenient to operate. Therefore, it is necessary to improve and optimize the existing normally closed suction irrigators for laparoscopic surgery. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a normally closed suction irrigator for laparoscopic surgery which has a reasonable structural design, is easy to assemble and disassemble, and is convenient for doctors to hold and operate, and to provide a method of using the same.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problems is: a normally closed suction flusher for laparoscopic surgery, comprising a handle portion consisting of an upper cover and a lower cover, the upper cover and the lower cover are hingedly connected, and the upper cover can be rotated relative to the lower cover to cover the lower cover or release the cover; the front end of the handle portion is connected to a head connecting seat, and a flushing and suction tube is installed on the head connecting seat; a channel is arranged inside the head connecting seat, and the channel is communicated with the flushing and suction tube; it is characterized in that it also includes a Y-type hose assembly, a flushing button assembly and a suction button assembly; the Y-type hose assembly includes a straight tube body and a flushing hose and a suction hose formed by branching from one end of the straight tube body; the end of the flushing hose is inserted with a flushing connector, and the end of the suction hose is inserted with a suction connector; the Y-type hose assembly is installed in the cavity of the lower cover, wherein the straight tube body The body is snap-fitted and installed at the front end of the lower cover cavity, and when the upper cover and the lower cover are closed, the end of the straight tube body abuts against the head connecting seat, and the channel inside the head connecting seat is communicated with the straight tube body, and the flushing joint and the suction joint are snap-fitted and installed at the rear end of the lower cover cavity, and are exposed from the rear end of the lower cover cavity; the flushing button assembly and the suction button assembly are installed on the lower cover; the flushing button assembly is used to control the connection and closure of the flushing hose and the straight tube body, when the flushing button assembly is in normal state, the flushing hose and the straight tube body are normally closed, and when the flushing button assembly is pushed upward, the flushing hose is connected with the straight tube body; the suction button assembly is used to control the connection and closure of the suction hose and the straight tube body, when the suction button assembly is in normal state, the suction hose and the straight tube body are normally closed, and when the suction button assembly is pushed upward, the suction hose is connected with the straight tube body.

[0006] Preferably, the upper cover and the lower cover are hingedly connected via a head connecting seat, wherein the front end of the upper cover is hingedly connected to the head connecting seat via a No. 1 pin, and the front end of the lower cover is hingedly connected to the head connecting seat via a No. 2 pin.

[0007] Preferably, the flushing button assembly and the suction button assembly have the same structure, both including a push button, a return spring, a column and a horizontal hook; two stepped grooves with the same structure for installing the flushing button assembly and the suction button assembly are provided at the bottom of the lower cover, the stepped groove is thin at the top and thick at the bottom and is open at the top and bottom, the push button and the return spring are both installed in the thick part of the stepped groove, and the lower end of the return spring abuts against the push button, and the upper end of the return spring abuts against the step surface of the stepped groove; the column is vertically installed, its lower end is connected to the push button, and its upper end passes through the stepped groove and is connected to the horizontal hook, and the horizontal hook is horizontally arranged; when the return spring is not compressed in the normal state, the column drives the horizontal hook to drop to the lowest position, at which time the horizontal hook in the flushing button assembly hooks and presses down to flatten the flushing hose, and the horizontal hook in the suction button assembly hooks and presses down to flatten the suction hose.

[0008] Preferably, a bolt is installed at the bottom of the push button, the bolt is installed vertically and can rotate, and the upper part of the bolt and the lower end of the column are threadedly connected.

[0009] Preferably, when the flushing hose or suction hose is in a normally closed state, the horizontal hook used to hook and flatten it is arranged in a direction perpendicular to the length direction of the lower cover, and vertical guide grooves for positioning and guiding the horizontal hook are provided on the inner walls on both sides of the lower cover.

[0010] Preferably, the upper cover and the lower cover are locked by a locking assembly, which includes a hook installed on the upper cover and capable of sliding forward and backward, and a locking slot arranged inside the lower cover cavity for clamping the hook; the hook is pushed forward and engaged into the locking slot, and the upper cover and the lower cover are locked; the hook is pushed backward and disengaged from the locking slot, and the upper cover and the lower cover are unlocked.

[0011] Preferably, a circle of flange is provided at the front end of the straight tube body, and the straight tube body, flange, flushing hose and suction hose are made of silicone material as one piece; a No. 1 positioning groove for positioning the straight tube body is provided at the front end of the lower cover cavity, and the straight tube body is snap-fittedly installed in the No. 1 positioning groove, and when the upper cover and the lower cover are closed, the end of the flange rests on the head connecting seat.

[0012] Preferably, the flushing connector and the suction connector are arranged in parallel and connected together by a fixing plate. The flushing connector, the suction connector and the fixing plate are made of plastic material and molded in one piece. A No. 2 positioning groove for positioning the fixing plate is provided at the rear end of the lower cover cavity. A flushing mark symbol is provided on the flushing connector, and a suction mark symbol is provided on the suction connector.

[0013] Preferably, the upper cover and the lower cover are made of plastic.

[0014] The present invention also provides another technical solution: a method for using a normally closed suction irrigator for laparoscopic surgery, including a method for replacing a Y-type hose assembly: pushing the hook downward to unlock the upper cover and the lower cover, and opening the upper cover; pushing the push button upward until the horizontal hook no longer hooks the flushing hose or the suction hose, and then rotating the column so that the horizontal hook avoids the flushing hose or the suction hose and is no longer located above the flushing hose or the suction hose; then releasing the push button, removing the Y-type hose assembly to be replaced, and then replacing it with a new Y-type hose assembly; first snapping the fixing plate in the new Y-type hose assembly onto the second In the positioning groove, the straight tube body is engaged into the No. 1 positioning groove, and then the push-type button is pushed upward, and the column is rotated until the arrangement direction of the horizontal hook is perpendicular to the length direction of the lower cover. At this time, the horizontal hook is located directly above the flushing hose or the suction hose. Then release the push-type button, and under the action of the reset spring, the column drives the horizontal hook to descend, and the horizontal hook hooks and presses down to flatten the flushing hose or the suction hose. When the horizontal hook descends into place, ensure that its end is located in the guide grooves set on the inner walls on both sides of the lower cover. At this point, the Y-type hose assembly is installed, close the upper cover, push the hook upward, and lock the upper cover and the lower cover.

[0015] Compared with the prior art, the present invention has the following advantages and effects:

[0016] 1. The flushing button assembly and the suction button assembly are arranged under the lower cover, which conforms to the ergonomic design and makes it convenient and labor-saving for doctors to use;

[0017] 2. The Y-type hose assembly is easy to replace. When the flushing hose or the suction hose is blocked, only the Y-type hose assembly needs to be replaced without discarding the entire suction flusher, thereby reducing medical waste and reducing the patient's medical expenses;

[0018] 3. The upper cover and the lower cover are made of plastic, which reduces the weight of the handle composed of the two, making it easier for doctors to use and less prone to fatigue during long-term operation;

[0019] 4. The straight tube body, flange, flushing hose and suction hose are made of silicone material in one piece. The end of the flange is pressed against the head connecting seat to increase the contact area between the straight tube body and the head connecting seat, thereby avoiding liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1It is a schematic diagram of the main structure of an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the top structure of an embodiment of the present invention (with the upper cover removed).

[0023] Figure 3 Schematic diagram of the structure of a Y-type hose assembly in an embodiment of the present invention.

[0024] Figure 4 2 is a schematic diagram of the top view of the lower cover in an embodiment of the present invention.

[0025] Figure 5 yes Figure 4 Schematic diagram of the CC section structure.

[0026] Figure 6 yes Figure 1 Schematic diagram of the cross-sectional structure along the BB axis.

[0027] Description of reference numerals: handle portion A;

[0028] Upper cover 1; lower cover 2; head connection seat 3; channel 31; flushing and suction tube 4; Y-type hose assembly 5; flushing button assembly 6; suction button assembly 7; No. 1 pin 8; No. 2 pin 9; push button 10; return spring 11; column 12; horizontal hook 13; stepped groove 14; bolt 15; guide groove 16; hook 17; locking groove 18; No. 1 positioning groove 19; fixing plate 20; No. 2 positioning groove 21;

[0029] Straight pipe body 51; flange 511; flushing hose 52; suction hose 53; flushing connector 54; suction connector 55; flushing symbol 541; suction symbol 551. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0031] Example

[0032] See also Figures 1 to 6 .

[0033] The present embodiment discloses a normally closed suction irrigator for laparoscopic surgery, comprising a handle portion A composed of an upper cover 1 and a lower cover 2, as well as a Y-shaped hose assembly 5, a flushing button assembly 6 and a suction button assembly 7. The upper cover 1 and the lower cover 2 are made of plastic, which reduces the weight of the handle portion A composed of the two, is convenient for doctors to use, and is not easy to fatigue after long-term operation. The upper cover 1 and the lower cover 2 are hingedly connected, and the upper cover 1 can rotate relative to the lower cover 2 to cover the lower cover 2 or remove the cover; the front end of the handle portion A is connected to a head connection seat 3, and a flushing and suction pipe 4 is installed on the head connection seat 3; a channel 31 is provided inside the head connection seat 3, and the channel 31 is connected to the flushing and suction pipe 4. Specifically, the upper cover 1 and the lower cover 2 are hingedly connected through the head connection seat 3, wherein the front end of the upper cover 1 is hingedly connected to the head connection seat 3 through a No. 1 pin 8, and the front end of the lower cover 2 is hingedly connected to the head connection seat 3 through a No. 2 pin 9.

[0034] In this embodiment, the Y-type hose assembly 5 includes a straight tube body 51 and a flushing hose 52 and a suction hose 53 formed by branching at one end of the straight tube body 51; a flushing connector 54 is inserted at the end of the flushing hose 52, and a suction connector 55 is inserted at the end of the suction hose 53. The Y-type hose assembly 5 is installed in the cavity of the lower cover 2, wherein the straight tube body 51 is snap-fitted and installed at the front end of the cavity of the lower cover 2, and when the upper cover 1 and the lower cover 2 are closed, the end of the straight tube body 51 abuts against the head connection seat 3, and the channel 31 inside the head connection seat 3 communicates with the straight tube body 51, and the flushing connector 54 and the suction connector 55 are snap-fitted and installed at the rear end of the cavity of the lower cover 2, and are exposed from the rear end of the cavity of the lower cover 2.

[0035] In this embodiment, a flange 511 is arranged at the front end of the straight tube body 51, and the straight tube body 51, the flange 511, the flushing hose 52 and the suction hose 53 are made of silicone material in one piece; a first positioning groove 19 for positioning the straight tube body 51 is arranged at the front end of the cavity of the lower cover 2, and the straight tube body 51 is installed in the first positioning groove 19 in a snap-fitting manner. When the upper cover 1 and the lower cover 2 are closed, the end of the flange 511 abuts against the head connection seat 3. By abutting the end of the flange 511 against the head connection seat 3, the contact area between the straight tube body 51 and the head connection seat 3 is increased, and liquid leakage is avoided.

[0036] In this embodiment, the flushing connector 54 and the suction connector 55 are arranged in parallel and connected together by a fixing plate 20. The flushing connector 54, the suction connector 55 and the fixing plate 20 are made of plastic material and molded in one piece; a No. 2 positioning groove 21 for positioning the fixing plate 20 is provided at the tail end of the cavity of the lower cover 2; a flushing mark symbol 541 is provided on the flushing connector 54, and a suction mark symbol 551 is provided on the suction connector 55.

[0037] In this embodiment, the flushing button assembly 6 and the suction button assembly 7 are installed on the lower cover 2; the flushing button assembly 6 is used to control the connection and closing of the flushing hose 52 and the straight tube body 51. When the flushing button assembly 6 is in a normal state, the flushing hose 52 and the straight tube body 51 are normally closed. When the flushing button assembly 6 is pushed upward, the flushing hose 52 is connected to the straight tube body 51. The suction button assembly 7 is used to control the connection and closing of the suction hose 53 and the straight tube body 51. When the suction button assembly 7 is in a normal state, the suction hose 53 and the straight tube body 51 are normally closed. When the suction button assembly 7 is pushed upward, the suction hose 53 is connected to the straight tube body 51.

[0038] In this embodiment, the flushing button assembly 6 and the suction button assembly 7 have the same structure, and both include a push button 10, a return spring 11, a column 12 and a horizontal hook 13. Two stepped grooves 14 with the same structure for mounting the flushing button assembly 6 and the suction button assembly 7 are arranged at the bottom of the lower cover 2. The stepped groove 14 is thin at the top and thick at the bottom, and both the top and the bottom are open. The push button 10 and the return spring 11 are both installed in the thick part of the stepped groove 14, and the lower end of the return spring 11 abuts against the push button 10, and the upper end of the return spring 11 abuts against the step surface of the stepped groove 14; the column 12 is installed vertically, and its lower end is connected to the push button 10, and its upper end passes through the stepped groove 14 and is connected to the horizontal hook 13, and the horizontal hook 13 is arranged horizontally.

[0039] In this embodiment, when the return spring 11 is not compressed in the normal state, the column 12 drives the horizontal hook 13 to drop to the lowest position. At this time, the horizontal hook 13 in the flushing button assembly 6 hooks and presses down to flatten the flushing hose 52, and the horizontal hook 13 in the suction button assembly 7 hooks and presses down to flatten the suction hose 53.

[0040] In this embodiment, a bolt 15 is installed at the bottom of the push button 10. The bolt 15 is installed vertically and can rotate. The upper part of the bolt 15 is threadedly connected to the lower end of the column 12. When the flushing hose 52 or the suction hose 53 is in the normally closed state, the horizontal hook 13 used to hook and flatten it is arranged in a direction perpendicular to the length direction of the lower cover 2. The inner walls on both sides of the lower cover 2 are provided with vertical guide grooves 16 for positioning and guiding the horizontal hook 13.

[0041] In this embodiment, the upper cover 1 and the lower cover 2 are locked by a locking assembly, which includes a hook 17 installed on the upper cover 1 and capable of sliding forward and backward, and a locking slot 18 arranged inside the cavity of the lower cover 2 for clamping the hook 17; push the hook 17 forward, the hook 17 engages in the locking slot 18, and the upper cover 1 and the lower cover 2 are locked; push the hook 17 backward, the hook 17 disengages from the locking slot 18, and the upper cover 1 and the lower cover 2 are unlocked.

[0042] In this embodiment, the method for using the normally closed suction irrigator for laparoscopic surgery includes a method for replacing the Y-type hose assembly: push the hook 17 downward to unlock the upper cover 1 and the lower cover 2, and open the upper cover 1; push the push button 10 upward until the horizontal hook 13 no longer hooks the flushing hose 52 or the suction hose 53, and then rotate the column 12 so that the horizontal hook 13 avoids the flushing hose 52 or the suction hose 53 and is no longer located above the flushing hose 52 or the suction hose 53; then release the push button 10, remove the Y-type hose assembly 5 that needs to be replaced, and then replace it with a new Y-type hose assembly 5.

[0043] The method for replacing a new Y-type hose assembly 5 is as follows: first, engage the fixing plate 20 in the new Y-type hose assembly 5 into the No. 2 positioning groove 21, and engage the straight tube body 51 into the No. 1 positioning groove 19, then push the push button 10 upward, and rotate the column 12 until the arrangement direction of the horizontal hook 13 is perpendicular to the length direction of the lower cover 2. At this time, the horizontal hook 13 is located directly above the flushing hose 52 or the suction hose 53. Then release the push button 10, and under the action of the reset spring 11, the column 12 drives the horizontal hook 13 to descend, and the horizontal hook 13 hooks and presses down to flatten the flushing hose 52 or the suction hose 53. When the horizontal hook 13 descends into place, ensure that its end is located in the guide groove 16 set on the inner walls on both sides of the lower cover 2. At this point, the Y-type hose assembly 5 is installed, close the upper cover 1, push the hook 17 upward, and lock the upper cover 1 and the lower cover 2.

[0044] In this embodiment, the flushing button assembly 6 and the suction button assembly 7 are arranged under the lower cover, which conforms to the ergonomic design and makes it convenient and labor-saving for doctors to use; the Y-type hose assembly 5 is easy to replace. When the flushing hose 52 or the suction hose 53 is blocked, only the Y-type hose assembly 5 needs to be replaced, and there is no need to discard the entire suction flusher, thereby reducing medical waste and reducing the patient's medical expenses.

[0045] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the protection scope of the present invention. Any changes and modifications made by any technician familiar with the technology without departing from the concept and scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A normally closed suction irrigator for laparoscopic surgery, comprising a handle portion (A) consisting of an upper cover (1) and a lower cover (2), wherein the upper cover (1) and the lower cover (2) are hingedly connected, and the upper cover (1) can rotate relative to the lower cover (2) to cover the lower cover (2) or remove the cover; the front end of the handle portion (A) is connected to a head connection seat (3), and a flushing and suction tube (4) is installed on the head connection seat (3), and the upper cover (1) and the lower cover (2) are hingedly connected through the head connection seat (3); a channel (31) is arranged inside the head connection seat (3), and the channel (31) is communicated with the flushing and suction tube (4); the characteristics are: The invention also comprises a Y-shaped hose assembly (5), a flushing button assembly (6) and a suction button assembly (7); the Y-shaped hose assembly (5) comprises a straight tube body (51) and a flushing hose (52) and a suction hose (53) formed by branching from one end of the straight tube body (51); a flushing connector (54) is inserted at the end of the flushing hose (52), and a suction connector (55) is inserted at the end of the suction hose (53); the Y-shaped hose assembly (5) is installed in the cavity of the lower cover (2), wherein the straight tube body (51) is snap-fitted and installed at the front end of the cavity of the lower cover (2); and when the upper cover (1) and the lower cover (2) are closed, the end of the straight tube body (51) abuts against the head connection seat (3), and the head connection seat (3) is connected to the head connection seat. The channel (31) inside the seat (3) is in communication with the straight tube body (51); the flushing connector (54) and the suction connector (55) are mounted on the rear end of the cavity of the lower cover (2) and are exposed from the rear end of the cavity of the lower cover (2); the flushing button assembly (6) and the suction button assembly (7) are mounted on the lower cover (2); the flushing button assembly (6) is used to control the connection and closing of the flushing hose (52) and the straight tube body (51); when the flushing button assembly (6) is in a normal state, the flushing hose (52) and the straight tube body (51) are normally closed; when the flushing button assembly (6) is pushed upward, the flushing hose (52) and the straight tube body (51) are in communication; the suction button assembly (7) is used to control the suction hose (53) and the straight tube body (51) is connected and closed. When the suction button assembly (7) is in a normal state, the suction hose (53) and the straight tube body (51) are normally closed. When the suction button assembly (7) is pushed upward, the suction hose (53) is connected to the straight tube body (51). The flushing button assembly (6) and the suction button assembly (7) have the same structure and both include a push button (10), a return spring (11), a column (12) and a horizontal hook (13). The bottom of the lower cover (2) is provided with two stepped grooves (14) of the same structure for mounting the flushing button assembly (6) and the suction button assembly (7). The stepped grooves (14) are thin at the top and thick at the bottom and are open at the top and the bottom. The push button (10) and the return spring (11) are both The column (12) is installed at the thick part of the stepped groove (14), and the lower end of the return spring (11) abuts against the push button (10), and the upper end of the return spring (11) abuts against the step surface of the stepped groove (14); the column (12) is installed vertically, and its lower end is connected to the push button (10), and its upper end passes through the stepped groove (14) and is connected to the horizontal hook (13), and the horizontal hook (13) is arranged horizontally; when the return spring (11) is not compressed in the normal state, the column (12) drives the horizontal hook (13) to drop to the lowest position, at which time the horizontal hook (13) in the flushing button assembly (6) hooks and presses down to flatten the flushing hose (52), and the horizontal hook (13) in the suction button assembly (7) hooks and presses down to flatten the suction hose (53).

2. The normally closed suction and irrigation device for laparoscopic surgery according to claim 1, characterized in that: The front end of the upper cover (1) is hingedly connected to the head connection seat (3) via a No. 1 pin shaft (8), and the front end of the lower cover (2) is hingedly connected to the head connection seat (3) via a No. 2 pin shaft (9).

3. The normally closed suction and irrigation device for laparoscopic surgery according to claim 1, characterized in that: A bolt (15) is installed at the bottom of the push button (10); the bolt (15) is installed vertically and is rotatable; the upper part of the bolt (15) and the lower end of the column (12) are threadedly connected.

4. The normally closed suction and irrigation device for laparoscopic surgery according to claim 3, characterized in that: When the flushing hose (52) or the suction hose (53) is in a normally closed state, the arrangement direction of the horizontal hook (13) for hooking and flattening it is perpendicular to the length direction of the lower cover (2), and vertical guide grooves (16) for positioning and guiding the horizontal hook (13) are provided on the inner walls on both sides of the lower cover (2).

5. The normally closed suction and irrigation device for laparoscopic surgery according to claim 1, characterized in that: The upper cover (1) and the lower cover (2) are locked by a locking assembly, wherein the locking assembly comprises a hook (17) mounted on the upper cover (1) and capable of sliding forward and backward, and a locking slot (18) arranged inside the cavity of the lower cover (2) and used to lock the hook (17); when the hook (17) is pushed forward, the hook (17) is engaged in the locking slot (18), and the upper cover (1) and the lower cover (2) are locked; when the hook (17) is pushed backward, the hook (17) is released from the locking slot (18), and the upper cover (1) and the lower cover (2) are unlocked.

6. The normally closed suction and irrigation device for laparoscopic surgery according to claim 1, characterized in that: A flange (511) is arranged at the front end of the straight tube body (51); the straight tube body (51), the flange (511), the flushing hose (52) and the suction hose (53) are integrally formed of a silicone material; a first positioning groove (19) for positioning the straight tube body (51) is arranged at the front end of the cavity of the lower cover (2); the straight tube body (51) is snap-fittedly mounted in the first positioning groove (19); when the upper cover (1) and the lower cover (2) are closed, the end of the flange (511) abuts against the head connection seat (3).

7. The normally closed suction and irrigation device for laparoscopic surgery according to claim 1, characterized in that: The flushing joint (54) and the suction joint (55) are arranged in parallel and connected together via a fixing plate (20); the flushing joint (54), the suction joint (55) and the fixing plate (20) are made of a plastic material and are integrally formed; a second positioning groove (21) for positioning the fixing plate (20) is provided at the rear end of the cavity of the lower cover (2); a flushing mark symbol (541) is provided on the flushing joint (54), and a suction mark symbol (551) is provided on the suction joint (55).

8. The normally closed suction and irrigation device for laparoscopic surgery according to claim 1, characterized in that: The upper cover (1) and the lower cover (2) are made of plastic.

9. A method for using the normally closed suction and irrigation device for laparoscopic surgery according to any one of claims 1 to 8, characterized in that: The invention comprises a method for replacing a Y-type hose assembly: pushing the hook (17) downward to unlock the upper cover (1) and the lower cover (2), and opening the upper cover (1); pushing the push button (10) upward until the horizontal hook (13) no longer hooks the flushing hose (52) or the suction hose (53), and then rotating the column (12) so that the horizontal hook (13) avoids the flushing hose (52) or the suction hose (53) and is no longer located above the flushing hose (52) or the suction hose (53); then releasing the push button (10), removing the Y-type hose assembly (5) to be replaced, and then replacing it with a new Y-type hose assembly (5); First, fit the fixing plate (20) of the new Y-type hose assembly (5) into the second positioning groove (21), and fit the straight tube body (51) into the first positioning groove (19). Then push the push button (10) upward and rotate the column (12) until the arrangement direction of the horizontal hook (13) is perpendicular to the length direction of the lower cover (2). At this time, the horizontal hook (13) is located directly above the flushing hose (52) or the suction hose (53). Then release the push button (10). The button (10) is pressed, and under the action of the return spring (11), the column (12) drives the horizontal hook (13) to descend, and the horizontal hook (13) hooks and presses down to flatten the flushing hose (52) or the suction hose (53). When the horizontal hook (13) is lowered into place, ensure that its end is located in the guide groove (16) provided on the inner walls of both sides of the lower cover (2). At this point, the installation of the Y-type hose assembly (5) is completed, and the upper cover (1) is closed, and the hook (17) is pushed upward to lock the upper cover (1) and the lower cover (2).

Images