Accurate electrotome cutting surgical instrument

Abstract

The invention relates to the technical field of surgical instruments, in particular to an electrotome precise cutting surgical instrument. Comprising an electrotome shell, a mounting notch is formed in the bottom of the electrotome shell, a smoke suction pipe is inserted into the mounting notch, a smoke suction hole is formed in the bottom of the smoke suction pipe, a through insertion hole is formed in the bottom of the smoke suction pipe, an electrode tip is inserted into the insertion hole, and a butt joint assembly is mounted in the insertion hole. And a threaded sleeve is fixedly installed at the bottom of the smoke suction pipe, and the outer surface of the threaded sleeve is in threaded connection with a filtering sleeve. When the electrode tip is cut to generate smoke, the smoke enters the ventilation opening and the smoke suction hole through the filtering ring and is discharged from the conveying hose, the smoke suction pipe is matched with the filtering sleeve to suck and discharge the generated smoke, and the electrode tip can be fixedly mounted in the smoke suction pipe through the filtering sleeve, so that the electrode tip can stretch out and draw back together with the smoke suction pipe to smoke.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to an electric knife precision cutting surgical instrument. Background Art

[0002] The surgical electrosurgery, whose full name is high-frequency electric knife, is a medical device widely used in surgical operations. The surgical electrosurgery heats the tissue when it comes into contact with the body through the high-frequency and high-voltage current generated at the bottom of the effective electrode, thereby separating and coagulating the body tissue, thereby achieving the effect of cutting and stopping bleeding.

[0003] When a surgical electrosurgical knife is used to cut the patient's body tissue, smoke will be generated when the electrode head of the electrosurgical knife contacts the body. The smoke generated will affect the doctor's field of vision, and the smoke is toxic gas and needs to be absorbed and processed in time.

[0004] The prior art generally uses a separate smoking device, which is held by the doctor to inhale the smoke. The doctor can also use a smoking tube to be sleeved on the shell of the electric knife to inhale the generated smoke. The smoking tube is installed on the shell of the electric knife as a limiter and cannot be adjusted. However, the electrode head of the electric knife needs to be adjusted to different lengths to facilitate cutting of patients in different conditions. This will cause the smoking tube to be too far away from the electrode head, making the smoking effect unsatisfactory. Therefore, there is a need for an electric knife precision cutting surgical instrument with a smoking function that can be adjusted in coordination with the electrode head of the electric knife. Summary of the invention

[0005] The purpose of the present invention is to provide an electrosurgical precision cutting surgical instrument to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention aims to provide an electric knife precision cutting surgical instrument, comprising an electric knife housing, a mounting notch is provided at the bottom of the electric knife housing, a smoking pipe is plugged into the interior of the mounting notch, a smoking hole is provided at the bottom of the smoking pipe, a clamping assembly is provided on the inner wall of the mounting notch, the clamping assembly is used to clamp and limit the smoking pipe, a through plugging hole is provided at the bottom of the smoking pipe, an electrode head is plugged into the interior of the plugging hole, a docking assembly is installed in the interior of the plugging hole, the docking assembly is provided on the top of the electrode head, and is used to stably install and dock the electrode head;

[0007] A threaded sleeve is fixedly installed at the bottom of the smoking pipe, and a filter sleeve is threadedly connected to the outer surface of the threaded sleeve. A filter ring is installed at the bottom of the filter sleeve, and the filter ring is used to filter impurities in the smoke. A plug-in port is provided at the bottom of the filter sleeve, and the caliber of the plug-in port is matched with the diameter of the bottom of the electrode head, and is used to plug the bottom of the electrode head. The filter sleeve cooperates with the docking assembly to fix the electrode head to the inside of the smoking pipe, so that the smoking pipe moves together with the electrode head.

[0008] As a further improvement of the present technical solution, the docking assembly includes a sliding groove opened on the inner wall of the plug-in hole, a moving block is slidably installed inside the sliding groove, a docking head is fixedly installed on the outside of the moving block, a connecting column is fixedly installed on the top of the moving block, a connecting hole is opened on the top of the inner wall of the sliding groove, the top of the connecting column is plugged into the interior of the connecting hole, a reset spring is provided on the outer surface of the connecting column, the bottom of the reset spring is fixedly installed on the top of the moving block, and the top of the reset spring is fixedly installed on the top of the inner wall of the sliding groove, the docking head is squeezed, driving the moving block to squeeze the reset spring and move upward inside the sliding groove.

[0009] As a further improvement of the technical solution, the electrode head is installed at the bottom of the docking head, so that the top of the electrode head is plugged into the inside of the plug hole and connected to the bottom of the docking head.

[0010] As a further improvement of the technical solution, a vent is provided on the top of the filter sleeve, and the vent is connected to the smoking hole.

[0011] As a further improvement of the technical solution, a delivery hose is installed on the top of the smoking pipe, the bottom of the delivery hose is connected to the smoking hole, and the top of the delivery hose passes through the electric knife housing and extends to the outside of the electric knife housing.

[0012] As a further improvement of the present technical solution, the clamping assembly includes a mounting hole opened on the inner wall of the mounting slot, a clamping block is installed inside the mounting hole, one side of the clamping block close to the mounting slot is arranged in an arc shape, which is adapted to the outer surface shape of the smoking pipe, and a telescopic spring is installed inside the clamping block, and the other end of the telescopic spring is installed on the inner wall of the mounting hole.

[0013] As a further improvement of the present technical solution, two clamping assemblies are provided, and the two clamping assemblies are symmetrically distributed inside the mounting slot. The top of the smoking pipe is inserted into the inside of the mounting slot, and the clamping block and the telescopic spring are squeezed to clamp the smoking pipe and install it inside the mounting slot.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the electrosurgical precision cutting surgical instrument, the bottom of the electrode head is clamped by the filter sleeve, and the top of the electrode head is squeezed to the bottom of the docking joint, so that the docking assembly can limit and fix electrode heads of different lengths with the help of a reset spring, and the electrode head is electrically connected to the docking joint to limit and fix the electrode head to the inside of the smoking pipe, so that the distance between the electrode head and the smoking pipe is always the same, so as to achieve the effect of limiting and fixing the bottom and top of the electrode head, avoiding shaking of the electrode head, and achieving the effect of precise cutting by the electrosurgical knife.

[0016] 2. In the electrosurgical precision cutting surgical instrument, when the electrode head generates smoke during cutting, the smoke enters the vent and the smoking hole through the filter ring and is discharged from the delivery hose. The smoking tube cooperates with the filter sleeve to absorb and discharge the generated smoke, and the filter sleeve can fix the electrode head to the inside of the smoking tube, so that the electrode head can be extended and retracted together with the smoking tube for smoking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the filter sleeve structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the smoking pipe of the present invention;

[0020] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0021] Figure 5 It is a schematic diagram of the structure of the butt joint and the electrode head of the present invention;

[0022] Figure 6 It is a schematic diagram of the vent structure of the present invention;

[0023] Figure 7 It is a schematic diagram of the installation notch structure of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged structural diagram at B in the middle.

[0025] The meaning of each number in the figure is:

[0026] 1. Electric knife housing; 11. Mounting notch; 12. Clamping assembly; 101. Mounting hole; 102. Clamping block; 103. Telescopic spring;

[0027] 2. Smoking pipe; 21. Plug hole; 23. Threaded sleeve; 24. Smoking hole;

[0028] 22. docking assembly; 201. sliding groove; 202. moving block; 203. docking joint; 204. connecting column; 206. return spring;

[0029] 3. Electrode head;

[0030] 4. Filter sleeve; 41. Filter ring; 42. Plug interface; 43. Vent;

[0031] 5. Delivery hose. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in 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.

[0033] Example

[0034] See also Figure 1-Figure 8 As shown, the purpose of this embodiment is to provide an electrosurgical precision cutting surgical instrument, including an electrosurgical shell 1, a mounting slot 11 is provided at the bottom of the electrosurgical shell 1, a smoking pipe 2 is plugged into the mounting slot 11, a smoking hole 24 is provided at the bottom of the smoking pipe 2, a clamping assembly 12 is provided on the inner wall of the mounting slot 11, the clamping assembly 12 is used to clamp and limit the smoking pipe 2, a through plugging hole 21 is provided at the bottom of the smoking pipe 2, an electrode head 3 is plugged into the plugging hole 21, a docking assembly 22 is installed in the plugging hole 21, and the docking assembly 22 is provided on the top of the electrode head 3 for firmly mounting and docking the electrode head 3;

[0035] A threaded sleeve 23 is fixedly installed at the bottom of the smoking pipe 2, and a filter sleeve 4 is threadedly connected to the outer surface of the threaded sleeve 23. A filter ring 41 is installed at the bottom of the filter sleeve 4. The filter ring 41 is used to filter impurities in the smoke. A plug-in port 42 is provided at the bottom of the filter sleeve 4. The caliber of the plug-in port 42 is adapted to the diameter of the bottom of the electrode head 3 and is used to plug in the bottom of the electrode head 3. The filter sleeve 4 cooperates with the docking assembly 22 to fix the electrode head 3 to the inside of the smoking pipe 2, so that the smoking pipe 2 moves together with the electrode head 3.

[0036] The smoking pipe 2 is clamped and fixed to the installation slot 11 provided at the bottom of the electrosurgical knife housing 1 by the clamping assembly 12, so that the smoking pipe 2 can be stretched inside the electrosurgical knife housing 1 to adjust the length of the extension, and a ring-shaped smoking hole 24 is provided at the bottom of the smoking pipe 2, so that a plug hole 21 can also be provided at the center of the bottom of the smoking pipe 2, and the electrode head 3 is plugged into the plug hole 21, and the electrode head 3 moves together with the smoking pipe 2, so that the smoking hole 24 is located outside the electrode head 3, and the smoke generated by the electrode head 3 cutting the body can enter the smoking hole 24;

[0037] After the electrode head 3 is inserted into the inside of the socket hole 21, it needs to be fixed and limited. The filter sleeve 4 is threadedly connected to the threaded sleeve 23 installed at the bottom of the smoking hole 24, so that the plug-in port 42 opened at the bottom of the filter sleeve 4 is sleeved on the bottom of the electrode head 3. The bottom of the electrode head 3 is set to be conical, so that the filter sleeve 4 can clamp the bottom of the electrode head 3 with the help of the plug-in port 42. When the filter sleeve 4 is screwed on the threaded sleeve 23, the electrode head 3 will be squeezed into the socket hole 21, so that the electrode head 3 squeezes the docking component 22 on the top, so as to achieve the effect of squeezing and fixing the bottom and top of the electrode head 3, so that the electrode head 3 can be firmly installed in the inside of the smoking pipe 2, avoiding the shaking of the electrode head 3, and precise cutting can be performed.

[0038] First, considering how the docking assembly 22 squeezes and docks the top of the electrode head 3, Figure 2-Figure 4 , the specific structure of the docking assembly 22 is disclosed. The docking assembly 22 includes a sliding groove 201 provided on the inner wall of the plug hole 21, a moving block 202 is slidably installed inside the sliding groove 201, a docking head 203 is fixedly installed outside the moving block 202, a connecting column 204 is fixedly installed on the top of the moving block 202, a connecting hole is provided on the top of the inner wall of the sliding groove 201, the top of the connecting column 204 is plugged into the inside of the connecting hole, a return spring 206 is provided on the outer surface of the connecting column 204, the bottom of the return spring 206 is fixedly installed on the top of the moving block 202, and the top of the return spring 206 is fixedly installed on the top of the inner wall of the sliding groove 201. The docking head 203 is squeezed, driving the moving block 202 to squeeze the return spring 206 and move upward inside the sliding groove 201. The electrode head 3 is installed at the bottom of the docking head 203, so that the top of the electrode head 3 is plugged into the inside of the plug hole 21 and connected to the bottom of the docking head 203.

[0039] Furthermore, a sliding groove 201 is provided on the inner wall of the plug hole 21 inside the smoking pipe 2, so that the moving block 202 is clamped in the inside of the sliding groove 201 and can slide up and down, and a connecting column 204 is fixedly installed on the top of the moving block 202, so that the top of the connecting column 204 is plugged into the connecting hole provided on the top of the inner wall of the sliding groove 201, so that the moving block 202 can slide up and down stably in the sliding groove 201, and then the top of the moving block 202 and the top of the inner wall of the sliding groove 201 are connected respectively by a return spring 206 sleeved on the outer surface of the connecting column 204, so that the electrode head 3 is squeezed into the plug hole 21 by the filter sleeve 4, and the top of the electrode head 3 is pressed against the bottom of the docking head 203 fixedly connected to the side of the moving block 202. The top of the electrode head 3 squeezes the docking head 203, the moving block 202 and the return spring 206 upward in the sliding groove 201 at the same time, so that the docking head 203 also squeezes the top of the electrode head 3 with the help of the moving block 202 and the return spring 206, and docks the electrode head 3 to the bottom of the docking head 203. The top of the docking head 203 is electrically connected to the power supply component, and the docking head 203 can energize the electrode head 3 to cut the patient's body.

[0040] It should be noted that the power supply assembly and the docking connector 203 are both installed inside the electrosurgical unit housing 1, and the electrosurgical unit is connected via electric wires to energize the electrode head 3. The internal circuit connection is prior art, and the working principle is common knowledge to those skilled in the art, and will not be elaborated on here.

[0041] Secondly, considering the problem of how the smoking pipe 2 absorbs the generated smoke, Figure 3-Figure 6 The top of the filter sleeve 4 is provided with a vent 43, which is connected to the smoking hole 24. A delivery hose 5 is installed on the top of the smoking pipe 2, the bottom of the delivery hose 5 is connected to the smoking hole 24, and the top of the delivery hose 5 passes through the electrosurgical housing 1 and extends to the outside of the electrosurgical housing 1.

[0042] Furthermore, by threading the filter sleeve 4 with the smoking tube 2, the shape of the vent 43 opened at the bottom of the filter sleeve 4 is adapted to the shape of the smoking hole 24 opened at the bottom of the smoking tube 2, and the end of the delivery hose 5 extending to the outside of the electrosurgical knife housing 1 is connected to a negative pressure device, so that the delivery hose 5 can absorb the smoke generated by the cutting of the electrode head 3 through the smoking hole 24 and the vent, and the filter ring 41 installed at the bottom of the vent 43 can filter large particles of impurities to prevent impurities from entering the negative pressure device through the smoking tube 2, so as to achieve the effect of absorbing the smoke generated by the electrosurgical knife cutting. After the operation is completed, the filter sleeve 4 can be unscrewed, the filter sleeve 4 can be cleaned, and the electrode head 3 can be replaced. Among them, the negative pressure device usually uses a vacuum pump, a fan and other equipment to extract the air in the enclosed space, so that the pressure in the space is lower than the external atmospheric pressure, thereby forming a negative pressure state. The internal structure and circuit of the negative pressure device are prior art, and its working principle is common knowledge of the staff in this field, which will not be repeated here.

[0043] It should be noted that when the electrode head 3 is in use, it is necessary to replace different types (spherical electrode head, sheet electrode head, needle electrode head) to facilitate the doctor to cut the patient's body. Different types of electrode heads 3 will have different lengths. The connecting device electrically connected to the electrode head 3 in the prior art electrosurgical unit housing 1 cannot be adjusted. The electrode head 3 is inserted into the interior of the electrosurgical unit housing 1 and docked with the connecting device, which will cause the exposed length of the electrode head 3 to be different, resulting in a longer distance between the smoking tube 2 and the electrode head 3, affecting the smoking effect of the smoking tube 2. The device can cooperate with the docking component 22 and the filter sleeve 4 to plug the electrode heads 3 of different lengths into the interior of the docking component 22. Through the expansion and contraction of the reset spring 206, the docking head 203 can be docked with the electrode heads 3 of different lengths, so that the filter sleeve 4 and the smoking tube 2 always maintain the same distance with the electrode head 3, which has a better effect on absorbing the smoke generated by cutting.

[0044] Finally, considering how the clamping assembly 12 clamps and installs the smoking pipe 2, the following example is presented. Figure 7 and Figure 8 , the specific structure of the clamping assembly 12 is disclosed. The clamping assembly 12 includes a mounting hole 101 opened on the inner wall of the mounting slot 11, a clamping block 102 is installed inside the mounting hole 101, and one side of the clamping block 102 close to the mounting slot 11 is set to be an arc shape, which is adapted to the outer surface shape of the smoking pipe 2, and a telescopic spring 103 is installed inside the clamping block 102, and the other end of the telescopic spring 103 is installed on the inner wall of the mounting hole 101.

[0045] There are two clamping assemblies 12, which are symmetrically distributed inside the installation slot 11. The top of the smoking pipe 2 is inserted into the inside of the installation slot 11, and the clamping block 102 and the telescopic spring 103 are squeezed to clamp the smoking pipe 2 and install it inside the installation slot 11.

[0046] Furthermore, a retractable clamping block 102 is installed on the inner wall of the mounting slot 11, and a retractable spring 103 is installed inside the clamping block 102, and the other end of the retractable spring 103 is installed on the inner wall of the mounting hole 101 where the clamping block 102 is located, so that when the smoking pipe 2 is inserted into the mounting slot 11, the smoking pipe 2 will squeeze the clamping block 102, so that the clamping block 102 clamps the smoking pipe 2 with the help of the retractable spring 103, and the smoking pipe 2 can be pulled inside the mounting slot 11 to adjust the length, and the clamping block 102 can be squeezed by the retractable spring 103 to clamp the outer surface of the smoking pipe 2, so as to clamp and fix the smoking pipe 2.

[0047] In summary, the working principle of this solution is as follows:

[0048] When the electric knife is used, the smoking pipe 2 can be inserted into the inside of the installation slot 11 through the clamping block 102 on the inner wall of the installation slot 11, and the adjusted smoking pipe 2 is clamped and limited by the clamping block 102, and the filter sleeve 4 at the bottom of the smoking pipe 2 can be unscrewed from the threaded sleeve 23, so that the electrode head 3 can be inserted into the plug hole 21 opened at the bottom of the smoking pipe 2, and the electrode head 3 is inserted into the plug interface 42 opened at the bottom of the filter sleeve 4, so that the filter sleeve 4 can be clamped to the bottom of the electrode head 3, and the top of the electrode head 3 is clamped. The electrode head 3 is pressed toward the inside of the plug hole 21 so that the top of the electrode head 3 presses the docking joint 203 and docks with the docking joint 203, so that the power supply component electrically connected to the top of the docking joint 203 can energize the electrode head 3, and the electrode head 3 is controlled to work through an external switch so that the bottom of the electrode head 3 is clamped by the filter sleeve 4, and the top of the electrode head 3 is pressed to the bottom of the docking joint 203, and the electrode head 3 is limited and fixed to the inside of the smoking pipe 2, so that the bottom and top of the electrode head 3 are both limited and fixed, so that the electric knife can cut accurately.

[0049] A vent 43 is also provided at the bottom of the filter sleeve 4. After the filter sleeve 4 is connected to the smoking pipe 2 through the threaded sleeve 23, the vent 43 can be communicated with the smoking hole 24 of the smoking pipe 2, and a filter ring 41 is installed inside the smoking hole 24 of the filter sleeve 4, so that the delivery hose 5 at the bottom of the smoking pipe 2 passes through the outside of the electric knife housing 1 and is connected to the negative pressure device to absorb the smoke generated by the cutting of the electrode head 3. The smoke enters the vent 43 and the smoking hole 24 through the filter ring 41 and is discharged from the delivery hose 5. The smoking pipe 2 cooperates with the filter sleeve 4 to absorb and discharge the generated smoke, and the filter sleeve 4 can fix the electrode head 3 to the inside of the smoking pipe 2, so that the electrode head 3 can be stretched together with the smoking pipe 2 for efficient smoking.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electrosurgical precision cutting surgical instrument, comprising an electrosurgical housing (1), wherein a mounting notch (11) is provided at the bottom of the electrosurgical housing (1), and wherein: A smoking pipe (2) is inserted into the interior of the installation slot (11), a smoking hole (24) is provided at the bottom of the smoking pipe (2), a clamping assembly (12) is provided on the inner wall of the installation slot (11), the clamping assembly (12) is used to clamp and limit the smoking pipe (2), a through plug hole (21) is provided at the bottom of the smoking pipe (2), an electrode head (3) is inserted into the plug hole (21), a docking assembly (22) is installed in the plug hole (21), the docking assembly (22) is provided at the top of the electrode head (3), and is used to stably install and dock the electrode head (3); A threaded sleeve (23) is fixedly mounted on the bottom of the smoking pipe (2), and a filter sleeve (4) is threadedly connected to the outer surface of the threaded sleeve (23). A filter ring (41) is mounted on the bottom of the filter sleeve (4), and the filter ring (41) is used to filter impurities in smoke. A plug-in port (42) is provided at the bottom of the filter sleeve (4), and the caliber of the plug-in port (42) matches the diameter of the bottom of the electrode head (3) and is used to plug the bottom of the electrode head (3). The filter sleeve (4) cooperates with the docking assembly (22) to fix the electrode head (3) inside the smoking pipe (2), so that the smoking pipe (2) moves together with the electrode head (3).

2. The electrosurgical precision cutting surgical instrument according to claim 1, characterized in that: The docking assembly (22) comprises a sliding groove (201) provided on the inner wall of the plug-in hole (21); a moving block (202) is slidably installed inside the sliding groove (201); a docking head (203) is fixedly installed on the outer side of the moving block (202); a connecting column (204) is fixedly installed on the top of the moving block (202); a connecting hole is provided on the top of the inner wall of the sliding groove (201); the top of the connecting column (204) is plugged into the inside of the connecting hole; a return spring (206) is provided on the outer surface of the connecting column (204); the bottom of the return spring (206) is fixedly installed on the top of the moving block (202); the top of the return spring (206) is fixedly installed on the top of the inner wall of the sliding groove (201); the docking head (203) is squeezed, thereby driving the moving block (202) to squeeze the return spring (206) and move upward inside the sliding groove (201).

3. The electrosurgical precision cutting surgical instrument according to claim 2, characterized in that: The electrode head (3) is installed at the bottom of the docking head (203), so that the top of the electrode head (3) is plugged into the inside of the plug hole (21) and connected to the bottom of the docking head (203).

4. The electrosurgical precision cutting surgical instrument according to claim 1, characterized in that: A vent (43) is provided on the top of the filter sleeve (4), and the vent (43) is connected to the smoking hole (24).

5. The electrosurgical precision cutting surgical instrument according to claim 1, characterized in that: A delivery hose (5) is installed on the top of the smoking pipe (2), the bottom of the delivery hose (5) is connected to the smoking hole (24), and the top of the delivery hose (5) passes through the electric knife housing (1) and extends to the outside of the electric knife housing (1).

6. The electrosurgical precision cutting surgical instrument according to claim 1, characterized in that: The clamping assembly (12) comprises a mounting hole (101) formed on the inner wall of the mounting slot (11); a clamping block (102) is installed inside the mounting hole (101); a side of the clamping block (102) close to the mounting slot (11) is arranged in an arc shape to match the outer surface shape of the smoking pipe (2); a telescopic spring (103) is installed inside the clamping block (102); the other end of the telescopic spring (103) is installed on the inner wall of the mounting hole (101).

7. The electrosurgical precision cutting surgical instrument according to claim 6, characterized in that: Two clamping assemblies (12) are provided, and the two clamping assemblies (12) are symmetrically distributed inside the installation slot (11). The top of the smoking pipe (2) is inserted into the inside of the installation slot (11), and the clamping block (102) and the telescopic spring (103) are squeezed to clamp the smoking pipe (2) inside the installation slot (11).

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