Subglottic suction device

Abstract

The present invention provides a subglottic suction device, comprising: a sputum culture bottle, a connecting assembly, an air inlet cylinder, a mounting cylinder, an adjusting assembly, and a locking mechanism. By moving the adjusting assembly so that the adjusting assembly is clamped on the locking mechanism, the air inlet corresponding to the adjusting assembly is opened, and at this time, outside air will enter the sputum culture bottle through the opened air inlet, thereby reducing the negative pressure value in the sputum culture bottle. By changing the number of groups of adjusting assemblies clamped on the locking mechanism, the corresponding number of air inlet holes can be opened, thereby facilitating the adjustment of the negative pressure value in the sputum culture bottle to the negative pressure value required for subglottic suction according to demand. Then, the connecting tube is connected to the suction tube on the air bag to perform subglottic suction. By separating the adjusting assembly and the locking mechanism, the adjusting assembly can be again blocked by the air inlet, making it convenient to switch between sputum suction and subglottic suction operations without adjusting the negative pressure gauge. The adjustment is convenient, and the risk of causing respiratory mucosal damage and bleeding is reduced.

Description

Technical Field

[0001] The present invention particularly relates to a subglottic suction device. Background Art

[0002] Subglottic suction, also known as subglottic drainage (SSD) or supra-balloon drainage, refers to an operation technique that uses a drainage tube attached to the wall of the endotracheal tube to perform continuous or intermittent negative pressure drainage of the retained material on the balloon.

[0003] At present, when performing subglottic suction in clinical practice, the negative pressure is often insufficient (although each bed is equipped with two negative pressures, subglottic suction, airway suction, VSD negative pressure suction, three-chamber chest closed drainage tube, and adding a bed will all lead to insufficient negative pressure). In this case, airway suction and subglottic suction will share a negative pressure (the negative pressure is connected to subglottic suction after suction), but the suction negative pressure is different from the subglottic negative pressure (the negative pressure of adult suction is 40-53.3kPa, and the negative pressure of subglottic suction is 15-20kPa). When frequent switching between airway suction and subglottic suction requires adjustment of the negative pressure gauge, but the negative pressure gauge is not easy to adjust to the required pressure when adjusting the pressure. This not only wastes time, but also increases the risk of respiratory mucosal damage and bleeding caused by excessive subglottic negative pressure due to inaccurate pressure adjustment. Therefore, in response to the above technical problems, a subglottic suction device is proposed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention proposes a subglottic suction device, which is convenient for adjusting the negative pressure of subglottic suction and reducing the risk of causing respiratory mucosal damage and bleeding.

[0005] A subglottic suction device comprising:

[0006] A sputum culture bottle, wherein the upper end of the sputum culture bottle is provided with a connecting tube and a negative pressure tube communicating with the inner cavity of the sputum culture bottle, and the outer side wall of the sputum culture bottle is provided with a fixing tube communicating with the inner cavity of the sputum culture bottle;

[0007] A connecting assembly is provided on the fixed pipe;

[0008] An air intake cylinder is connected to the fixed pipe via the connecting assembly, the upper and lower ends of the air intake cylinder are both sealed, the inner cavity of the air intake cylinder is an air intake cavity, and the outer circumference of the air intake cylinder is provided with a plurality of groups of air intake holes communicating with the air intake cavity at intervals along the circumference of the air intake cylinder;

[0009] A mounting cylinder detachably disposed at the lower end of the air intake cylinder;

[0010] The adjusting components are provided in multiple groups, and the multiple groups of adjusting components correspond one-to-one to the multiple groups of air inlet holes. The adjusting components can move along the axial direction of the mounting tube and can seal, cover or open the corresponding air inlet holes.

[0011] A locking mechanism is provided at the lower end of the mounting tube and is used to lock the adjusting assembly when the adjusting assembly opens the air inlet hole.

[0012] In one embodiment, the adjustment assembly includes a shielding rod, a pressure rod and a first spring; an open mounting cavity is provided at the lower end of the mounting tube, and a plurality of through grooves communicating with the mounting cavity are provided on the top plate of the mounting tube. The lower end of the shielding rod is located in the mounting cavity, and the upper end of the shielding rod can sealably pass through the through groove and the lower end of the mounting tube, and extend into the air inlet cavity, and seal and shield the air inlet hole corresponding thereto. The lower end of the shielding rod can be snapped onto the locking mechanism, and the outer peripheral side of the mounting tube is spaced circumferentially along the mounting tube. The bottom surface of the plurality of guide grooves is provided with positioning holes, and the lower end of the positioning shaft can be slidably passed through the positioning hole. The first spring is sleeved on the positioning shaft, and the two ends of the first spring respectively press against the bottom surface of the pressure rod and the guide groove.

[0013] In one embodiment, the adjustment assembly further includes multiple groups of connecting rods; a group of connecting rods is arranged between each two adjacent groups of pressure rods, and the head end of the connecting rod is placed on one group of pressure rods, and the tail end of the connecting rod is fixedly connected to the other group of pressure rods.

[0014] In one embodiment, the locking mechanism includes a mounting post and a locking assembly; the mounting post is detachably arranged at the opening of the mounting cavity, and a mounting ring is coaxially arranged at the upper end of the mounting post, and the locking assembly is arranged in the mounting post and the mounting ring, and the locking assembly can clamp all the shielding rods and release all the shielding rods at the same time.

[0015] In one embodiment, the locking assembly includes multiple sets of locking rods, connecting shafts, conical pressure heads and second springs; the inner side wall of the mounting ring is provided with multiple sets of fixed shafts at intervals along the circumference of the mounting cylinder, the middle parts of the multiple sets of locking rods can be rotatably connected to the multiple sets of fixed shafts, the upper ends of the multiple sets of locking rods are provided with first wedge-shaped blocks, the lower ends of the multiple sets of shielding rods are provided with second wedge-shaped blocks, the second wedge-shaped blocks can be hooked on the first wedge-shaped blocks when moving downward, the lower end of the locking rod is provided with a third spring, the free end of the third spring can resist the mounting The inner wall of the ring, the mounting post is provided with a through hole that penetrates the mounting post along the axial direction of the mounting post, the connecting shaft can be slidably inserted into the through hole, one end of the connecting shaft is located in the mounting ring, and is detachably connected to the conical pressure head, the conical pressure head can squeeze multiple groups of the locking rods at the same time, and make multiple groups of the third springs compressed and contracted, the other end of the connecting shaft extends to the outside of the mounting post, the second spring is sleeved on the connecting shaft, and the two ends of the second spring respectively press against the bottom end of the conical pressure head and the upper end of the mounting post.

[0016] In one embodiment, a pull ring is provided at the end of the connecting shaft extending outside the mounting column.

[0017] In one embodiment, the connecting assembly includes a fixing ring and an internal threaded sleeve; the fixing ring is sleeved on the fixing tube, and the inner side wall of the fixing ring is provided with multiple groups of positioning blocks at intervals, and the outer side wall of the fixing tube is provided with multiple groups of positioning slots corresponding to the multiple groups of positioning blocks, and the multiple groups of positioning slots are arranged axially along the fixing tube, and the multiple groups of positioning blocks can be slidably clamped in the multiple groups of positioning slots, and the inner threaded sleeve is provided with multiple groups of first elastic clip buckles at intervals near the end of the fixing ring near the fixing ring, and the outer peripheral side of the fixing ring is provided with a fixing slot along the circumference of the fixing ring, and the multiple groups of first elastic clip buckles can be clamped in the fixing slot axially rotatable around the fixing ring, and the circumferential side of the air intake cylinder is provided with a plug-in tube connected to the air intake cavity, and the circumferential side of the plug-in tube is provided with an external threaded portion, the plug-in tube can be passed through the fixing tube, and the internal threaded sleeve can be threadedly connected to the external threaded portion.

[0018] In one embodiment, a sealing ring is sleeved on the outer circumference of the plug-in tube, and multiple groups of the sealing rings are arranged at intervals along the axial direction of the plug-in tube. The multiple groups of sealing rings are used for sealing between the plug-in tube and the fixed tube.

[0019] In one embodiment, a fixing groove is provided at the end of the fixing pipe close to the air intake cylinder, and a fixing block is provided at the end of the external threaded portion close to the fixing pipe, and the fixing block can be inserted into the fixing groove.

[0020] In one embodiment, multiple groups of second spring clip buckles are spaced apart on the circumferential side of the upper end of the mounting tube, and multiple groups of spring clip slots are provided on the circumferential side of the lower end of the air intake tube corresponding to the multiple groups of second spring clip buckles, and the multiple groups of second spring clip buckles are respectively clamped in the multiple groups of spring clip slots.

[0021] Beneficial effects of the above-mentioned subglottic suction device:

[0022] When suctioning sputum, the connecting tube is connected to the suction tube, the negative pressure tube is connected to the negative pressure device, and the adjusting component blocks multiple groups of air inlet holes. At this time, the negative pressure device generates the negative pressure value required for the suction operation in the sputum culture bottle through the negative pressure tube. The negative pressure in the sputum culture bottle sucks out the sputum in the patient's airway through the connecting tube and the suction tube, thereby performing the suction operation. When performing subglottic suction, first, move the adjusting component to make it snap onto the locking mechanism. At this time, the air inlet corresponding to the adjusting component is open. At this time, the outside air will enter the air inlet cavity through the open air inlet, and then enter the sputum culture bottle through the air inlet cavity. The bottle is filled with liquid, thereby reducing the negative pressure value in the sputum culture bottle. By changing the number of groups of adjusting components connected to the locking mechanism, the air inlet holes of the corresponding number can be opened, so that the negative pressure value in the sputum culture bottle can be adjusted to the negative pressure value required for subglottic suction according to needs. Then the connecting tube is connected to the suction tube on the air bag to perform subglottic suction. The adjusting component can be used to cover the air inlet hole again by separating the adjusting component and the locking mechanism. It is convenient to switch between sputum suction operation and subglottic suction operation. There is no need to adjust the negative pressure gauge, which is easy to adjust and reduces the risk of causing respiratory mucosal damage and bleeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a subglottic suction device provided by one embodiment of the present invention;

[0025] Figure 2 for Figure 1 An exploded view of a subglottic suction device is shown;

[0026] Figure 3 for Figure 1 A front view of a subglottic suction device including an air inlet cylinder, a mounting cylinder and a mounting column after being cut away;

[0027] Figure 4 for Figure 1 An exploded view of some components of a subglottic suction device is shown;

[0028] Figure 5 for Figure 1 An exploded view of an air inlet cylinder in a subglottic suction device is shown;

[0029] Figure 6 for Figure 1 A schematic diagram of the three-dimensional structure of a subglottic suction device after the installation column is cut away;

[0030] Figure 7 for Figure 1 An exploded view of a subglottic suction device with a mounting post cut away;

[0031] Figure 8 for Figure 1 A schematic cross-sectional view of a local structure of a subglottic suction device is shown;

[0032] Figure 9 for Figure 1 An exploded view of the connecting components of a subglottic suction device is shown.

[0033] Reference numerals:

[0034] 10. Sputum culture bottle; 101. Fixing tube; 1011. Fixing groove; 1012. Positioning chute; 11. Connecting tube; 12. Negative pressure tube; 13. Air inlet; 131. Inserting tube; 132. External thread; 133. Spring clip slot; 134. Air inlet hole; 135. Fixing block; 136. Air inlet cavity; 14. Mounting tube; 141. Positioning hole; 142. Guide chute; 143. Through slot; 144. Second spring clip buckle; 145. Mounting cavity; 15. Adjustment assembly; 151. Shielding rod; 152. Second wedge-shaped block; 153 , pressure rod; 154, first spring; 155, positioning shaft; 16, connecting rod; 18, mounting column; 181, mounting ring; 182, through hole; 183, fixed shaft; 19, locking assembly; 191, pull ring; 192, connecting shaft; 193, second spring; 194, third spring; 195, locking rod; 196, first wedge-shaped block; 197, conical pressure head; 20, connecting assembly; 201, fixed slot; 202, positioning block; 203, fixing ring; 204, first spring clip buckle; 205, internal threaded sleeve; 21, sealing ring. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0036] See also Figures 1 to 3 In one embodiment, a subglottic suction device includes: a sputum culture bottle 10, a connecting component 20, an air inlet cylinder 13, a mounting cylinder 14, an adjustment component 15 and a locking mechanism.

[0037] Specifically, the upper end of the sputum culture bottle 10 is provided with a connecting tube 11 and a negative pressure tube 12 that are in communication with the inner cavity of the sputum culture bottle 10, and the outer peripheral side wall of the sputum culture bottle 10 is provided with a fixed tube 101 that is in communication with the inner cavity of the sputum culture bottle 10. The connecting assembly 20 is provided on the fixed tube 101. The air inlet cylinder 13 is connected to the fixed tube 101 through the connecting assembly 20. The upper and lower ends of the air inlet cylinder 13 are both sealed. The inner cavity of the air inlet cylinder 13 is an air inlet cavity 136. The outer peripheral side of the air inlet cylinder 13 is provided with multiple groups of air inlet holes 134 that are in communication with the air inlet cavity 136 at intervals along the circumference of the air inlet cylinder 13. The mounting cylinder 14 is detachably arranged at the lower end of the air inlet cylinder 13. There are multiple groups of adjustment assemblies 15, and the multiple groups of adjustment assemblies 15 correspond one-to-one to the multiple groups of air inlet holes 134. The adjustment assembly 15 can move along the axial direction of the mounting cylinder 14 and can seal, block or open the corresponding air inlet holes 134. The locking mechanism is provided at the lower end of the mounting tube 14 and is used to lock the adjusting assembly 15 when the adjusting assembly 15 opens the air inlet hole 134 .

[0038] In the above embodiment, when suctioning sputum, the connecting tube 11 is connected to the sputum suction tube, the negative pressure tube 12 is connected to the negative pressure device, and the regulating component 15 blocks the multiple groups of air inlet holes 134. At this time, the negative pressure device generates the negative pressure value required for the sputum suction operation in the sputum culture bottle 10 through the negative pressure tube 12. The negative pressure in the sputum culture bottle 10 sucks out the sputum in the patient's airway through the connecting tube 11 and the sputum suction tube, thereby performing the sputum suction operation. When performing subglottic suction, first, the regulating component 15 is moved to make the regulating component 15 snap onto the locking mechanism. At this time, the air inlet hole 134 corresponding to the regulating component 15 is opened. At this time, the outside air will enter the air inlet cavity 136 through the opened air inlet hole 134, and then pass through the inlet hole 136. The air cavity 136 enters the sputum culture bottle 10, thereby reducing the negative pressure value in the sputum culture bottle 10. By changing the number of groups of adjustment components 15 connected to the locking mechanism, the corresponding number of air inlet holes 134 can be opened, and then the negative pressure value in the sputum culture bottle 10 can be adjusted to the negative pressure value required for subglottic suction according to needs. Then, the connecting tube 11 is connected to the suction tube on the air bag to perform subglottic suction operation. By separating the adjustment component 15 and the locking mechanism, the adjustment component 15 can cover the air inlet hole 134 again. It is convenient to switch between sputum suction operation and subglottic suction operation. There is no need to adjust the negative pressure gauge. The adjustment is convenient, which reduces the risk of causing respiratory mucosal damage and bleeding.

[0039] See also Figures 3 to 5In one embodiment, the adjustment assembly 15 includes a shielding rod 151, a pressure rod 153 and a first spring 154; the lower end of the mounting cylinder 14 is provided with an open mounting cavity 145, and a plurality of through grooves 143 communicating with the mounting cavity 145 are provided on the top plate of the mounting cylinder 14. The lower end of the shielding rod 151 is located in the mounting cavity 145, and the upper end of the shielding rod 151 can sealably pass through the through groove 143 and the lower end of the mounting cylinder 14, and extend into the air inlet cavity 136, and seal and block the corresponding air inlet hole 134, the lower end of the shielding rod 151 can be snapped onto the locking mechanism, and the outer peripheral side of the mounting cylinder 14 is spaced apart along the circumference of the mounting cylinder 14. A plurality of guide slots 142 are provided that are connected to the mounting cavity 145. A pressure rod 153 is arranged in the guide slot 142 and can move axially along the mounting tube 14. One end of the pressure rod 153 is connected to the bottom end of the shielding rod 151, and the other end of the pressure rod 153 extends to the outside of the mounting tube 14. A positioning shaft 155 is provided at the bottom end of the pressure rod 153. Positioning holes 141 are provided on the bottom surfaces of the plurality of guide slots 142. The lower end of the positioning shaft 155 can be slidably passed through the positioning hole 141. The first spring 154 is sleeved on the positioning shaft 155. The two ends of the first spring 154 respectively press against the pressure rod 153 and the bottom surface of the guide slot 142.

[0040] In the above embodiment, when in use, by pressing the pressure rod 153 downward, the pressure rod 153 drives the shielding rod 151 to move downward. The downward movement of the shielding rod 151 can cancel the sealing shielding of the air inlet 134, and at the same time can be clamped on the locking mechanism. At this time, outside air can enter the sputum culture bottle 10 through the air inlet 134 and the air inlet cavity 136, thereby reducing the negative pressure value in the sputum culture bottle 10. By changing the number of groups of shielding rods 151 clamped on the locking mechanism, the corresponding number of air inlet holes 134 can be opened, so that the negative pressure value in the sputum culture bottle 10 can be adjusted to the negative pressure value required for subglottic suction according to needs, and the adjustment is convenient. At the same time, when the pressure rod 153 moves downward, the pressure rod 153 squeezes the first spring 154. When it is necessary to seal and block the air inlet 134 again, by canceling the connection between the blocking rod 151 and the locking mechanism, the reaction force of the first spring 154 can make the pressure rod 153 move upward. The upward movement of the pressure rod 153 can drive the blocking rod 151 to move upward to seal and block the air inlet 134 again, so that the outside air cannot enter the sputum culture bottle 10. At this time, the negative pressure value in the sputum culture bottle 10 is the negative pressure value of the suction operation, which is convenient for suctioning again. The suction operation and subglottic suction are convenient to switch, and there is no need to adjust the negative pressure gauge. The adjustment is convenient, which reduces the risk of causing respiratory mucosal damage and bleeding.

[0041] On the basis of the above embodiment, the adjustment assembly 15 further includes multiple groups of connecting rods 16; a group of connecting rods 16 is arranged between each two adjacent groups of pressure rods 153, and the head end of the connecting rod 16 is placed on one group of pressure rods 153, and the tail end of the connecting rod 16 is fixedly connected to the other group of pressure rods 153.

[0042] In the above embodiment, by pressing the pressure rod 153 with the connecting rod 16, the pressure rod 153 moves and the pressure rod 153 at the head end of the connecting rod 16 can be driven to move through the connecting rod 16. Therefore, when it is necessary to open a group of air inlet holes 134, the first group of pressure rods 153 can be pressed in the counterclockwise direction of the mounting tube 14. When it is necessary to open two groups of air inlet holes 134, the second group of pressure rods 153 can be pressed in the counterclockwise direction of the mounting tube 14. The pressure rod 153 moves and the first group of pressure rods 153 can be driven to move synchronously through the connecting rod 16. At this time, the two groups of air inlet holes 134 can be opened at the same time. When it is necessary to open three groups of air inlet holes 134, the third group of pressure rods 153 are pressed counterclockwise along the mounting tube 14. The pressure rods 153 move through the connecting rod 16 to drive the second group of pressure rods 153 to move synchronously. The second group of pressure rods 153 move synchronously through the connecting rod 16 to drive the first group of pressure rods 153 to move synchronously. At this time, the three groups of air inlet holes 134 can be opened at the same time. Therefore, when it is necessary to open multiple groups of air inlet holes 134, it is only necessary to press the corresponding pressure rods 153, which is convenient for quickly adjusting the number of holes 134 to be opened. The adjustment is convenient and fast.

[0043] See also Figures 3 to 7 In one embodiment, the locking mechanism includes a mounting post 18 and a locking assembly 19; the mounting post 18 is detachably arranged at the opening of the mounting cavity 145, and a mounting ring 181 is coaxially arranged on the upper end of the mounting post 18. The locking assembly 19 is arranged in the mounting post 18 and the mounting ring 181. The locking assembly 19 can clamp all the blocking rods 151 and can release all the blocking rods 151 at the same time.

[0044] On the basis of the above embodiment, the locking assembly 19 further includes multiple sets of locking rods 195, connecting shafts 192, conical pressure heads 197 and second springs 193; the inner side wall of the mounting ring 181 is provided with multiple sets of fixed shafts 183 at intervals along the circumference of the mounting cylinder 14, the middle parts of the multiple sets of locking rods 195 can be rotatably connected to the multiple sets of fixed shafts 183, the upper ends of the multiple sets of locking rods 195 are provided with first wedge-shaped blocks 196, the lower ends of the multiple sets of shielding rods 151 are provided with second wedge-shaped blocks 152, and the second wedge-shaped blocks 152 can be hooked on the first wedge-shaped blocks 196 when they move downward, and the lower ends of the locking rods 195 are provided with third springs 194. The free end of the connecting shaft 192 can be against the inner side wall of the mounting ring 181. A through hole 182 that passes through the mounting column 18 is opened on the mounting column 18 along the axial direction of the mounting column 18. The connecting shaft 192 can be slidably penetrated into the through hole 182. One end of the connecting shaft 192 is located in the mounting ring 181 and is detachably connected to a conical pressure head 197. The conical pressure head 197 can simultaneously squeeze multiple groups of locking rods 195 and compress and shrink multiple groups of third springs 194. The other end of the connecting shaft 192 extends to the outside of the mounting column 18. The second spring 193 is sleeved on the connecting shaft 192, and the two ends of the second spring 193 respectively against the bottom end of the conical pressure head 197 and the upper end of the mounting column 18.

[0045] When the second wedge block 152 moves downward and contacts the first wedge block 196, the inclined surface of the second wedge block 152 squeezes the inclined surface of the first wedge block 196, causing the locking rod 195 to rotate and squeeze the third spring 194. When the second wedge block 152 continues to move downward and separates from the first wedge block 196, the squeezing force on the first wedge block 196 disappears. At this time, the reaction force of the third spring 194 causes the locking rod 195 to rotate in the opposite direction. The locking rod 195 rotates in the opposite direction, so that the first wedge block 196 is hooked to the second wedge block 152. The blocking rod 151 is fixed on the wedge-shaped block 152, which makes it convenient to fix the blocking rod 151. When it is necessary to cancel the fixation of the blocking rod 151, the connecting shaft 192 is moved downward. The connecting shaft 192 moves downward, driving the conical pressure head 197 to move downward and squeeze the second spring 193. The conical pressure head 197 moves downward to squeeze the locking rod 195 to rotate the locking rod 195 and compress the third spring 194 again. At this time, the locking rod 195 rotates and drives the first wedge-shaped block 196 to rotate to separate the first wedge-shaped block 196 from the second wedge-shaped block 152. When the first wedge-shaped block 196 is separated from the second wedge-shaped block 152, the blocking rod 151 can be moved upward, which makes it convenient to reset the blocking rod 151.

[0046] See also Figure 6In one embodiment, a pull ring 191 is provided at the end of the connecting shaft 192 extending outside the mounting post 18. This facilitates the movement of the connecting shaft 192 and is easy to use.

[0047] See also Figure 1 、 Figure 2 、 Figure 8 、 Figure 9 In one embodiment, the connecting assembly 20 includes a fixing ring 203 and an internal threaded sleeve 205. The fixing ring 203 is sleeved on the fixing tube 101. The inner side wall of the fixing ring 203 is provided with multiple groups of positioning blocks 202 at intervals. The outer side wall of the fixing tube 101 is provided with multiple groups of positioning grooves 1012 corresponding to the multiple groups of positioning blocks 202. The multiple groups of positioning grooves 1012 are arranged along the axial direction of the fixing tube 101. The multiple groups of positioning blocks 202 can be slidably clamped in the multiple groups of positioning grooves 1012. The end of the internal threaded sleeve 205 near the fixing ring 203 is provided with multiple groups of first spring clip buckles at intervals. 204, a fixed card slot 201 is opened on the outer peripheral side of the fixing ring 203 along the circumference of the fixing ring 203, and multiple groups of first spring clip buckles 204 can be axially rotated around the fixing ring 203 and are clamped in the fixed card slot 201. The peripheral side of the air intake cylinder 13 is provided with a plug-in tube 131 connected to the air intake cavity 136, and the peripheral side of the plug-in tube 131 is provided with an external threaded portion 132. The plug-in tube 131 can be inserted into the fixing tube 101, and the internal threaded sleeve 205 can be threadedly connected with the external threaded portion 132.

[0048] In the above embodiment, when the sputum culture bottle 10 is connected to the air inlet cylinder 13, the plug tube 131 on the air inlet cylinder 13 is inserted into the fixed tube 101, and then the internal threaded sleeve 205 is rotated to engage the internal threaded sleeve 205 with the external threaded portion 132. As the internal threaded sleeve 205 continues to rotate, the internal threaded sleeve 205 moves along the external threaded portion 132, and the movement of the internal threaded sleeve 205 drives the fixing ring 203 to move along the fixed tube 101. When the fixing ring 203 moves to the end and cannot move, the internal threaded sleeve 205 is engaged with the external threaded portion 132. 05 Rotate to move the external threaded portion 132 closer to the fixed tube 101, and then make the external threaded portion 132 fit tightly with the fixed tube 101, thereby completing the connection. The connection is convenient. The external threaded portion 132 can be separated from the fixed tube 101 by rotating the internal threaded sleeve 205 in the opposite direction. At this time, the air inlet cylinder 13 can be disassembled. The air inlet cylinder 13 is easy to install and disassemble, and the air inlet cylinder 13 is detachable, which is convenient for connecting the air inlet cylinder 13 with different sputum culture bottles 10, thereby facilitating multiple uses of the air inlet cylinder 13 and reducing the cost of use.

[0049] See also Figure 2 、 Figure 3 、 Figure 8In one embodiment, a sealing ring 21 is provided on the outer circumference of the insertion tube 131. Multiple sets of sealing rings 21 are provided at intervals along the axial direction of the insertion tube 131. These multiple sets of sealing rings 21 are used to seal between the insertion tube 131 and the fixed tube 101. The provision of the sealing rings 21 improves the sealing between the insertion tube 131 and the fixed tube 101, preventing air leakage that could cause unstable negative pressure in the sputum culture bottle 10.

[0050] See also Figure 3 、 Figure 8 、 Figure 9 In one embodiment, a fixing groove 1011 is provided at the end of the fixing pipe 101 near the air intake cylinder 13 , and a fixing block 135 is provided at the end of the external threaded portion 132 near the fixing pipe 101 , and the fixing block 135 can be inserted into the fixing groove 1011 .

[0051] In the above embodiment, by providing a fixing block 135 to cooperate with the fixing groove 1011, when the fixing block 135 is inserted into the fixing groove 1011, the sputum culture bottle 10 and the air inlet cylinder 13 cannot rotate relative to each other. Therefore, when the internal threaded sleeve 205 is rotated to engage with the external threaded portion 132, the external threaded portion 132 cannot rotate, which makes it easier for the internal threaded sleeve 205 to engage with the external threaded portion 132, and the sputum culture bottle 10 and the air inlet cylinder 13 can only be connected or separated by rotating the internal threaded sleeve 205, thereby improving the firmness of the connection between the sputum culture bottle 10 and the air inlet cylinder 13.

[0052] See also Figure 4 、 Figure 5 In one embodiment, a plurality of groups of second spring clip buckles 144 are spaced apart on the circumferential side of the upper end of the mounting tube 14, and a plurality of groups of spring clip slots 133 are provided on the circumferential side of the lower end of the air intake tube 13 corresponding to the plurality of groups of second spring clip buckles 144, and the plurality of groups of second spring clip buckles 144 are respectively clamped in the plurality of groups of spring clip slots 133.

[0053] In the above embodiment, the mounting cylinder 14 and the air inlet cylinder 13 are connected by a snap connection, which facilitates the installation and removal of the mounting cylinder 14 .

[0054] The specific implementation of the above-mentioned subglottic suction device is as follows:

[0055] During suction, the connecting tube 11 is connected to the suction tube, the negative pressure tube 12 is connected to the negative pressure equipment, and the adjusting component 15 blocks the multiple groups of air inlet holes 134. At this time, the negative pressure equipment generates the negative pressure value required for the suction operation in the sputum culture bottle 10 through the negative pressure tube 12. The negative pressure in the sputum culture bottle 10 sucks out the sputum in the patient's airway through the connecting tube 11 and the suction tube, thereby performing the suction operation.

[0056] When performing subglottic suction, first, by pressing the pressure rod 153 downward, the pressure rod 153 drives the shielding rod 151 to move downward, and the shielding rod 151 moves downward to cancel the sealing of the air inlet 134 and squeeze the first spring 154. At the same time, the shielding rod 151 moves downward to drive the second wedge-shaped block 152 to move downward. When the second wedge-shaped block 152 moves downward and contacts the first wedge-shaped block 196, the inclined surface of the second wedge-shaped block 152 squeezes the inclined surface of the first wedge-shaped block 196, causing the locking rod 195 to rotate and squeeze the second wedge-shaped block 152. The third spring 194, when the second wedge-shaped block 152 continues to move downward and separates from the first wedge-shaped block 196, the extrusion force on the first wedge-shaped block 196 disappears. At this time, the reaction force of the third spring 194 causes the locking rod 195 to rotate in the opposite direction. The locking rod 195 rotates in the opposite direction to make the first wedge-shaped block 196 hooked on the second wedge-shaped block 152, thereby fixing the shielding rod 151. At this time, the outside air can enter the sputum culture bottle 10 through the air inlet 134 corresponding to the shielding rod 151, thereby reducing the amount of air in the sputum culture bottle 10. The negative pressure value is easy to adjust, and when it is necessary to open one group of air inlet holes 134, the first group of pressure rods 153 can be pressed counterclockwise along the mounting tube 14. When two groups of air inlet holes 134 need to be opened, the second group of pressure rods 153 can be pressed counterclockwise along the mounting tube 14. The movement of the pressure rods 153 can drive the first group of pressure rods 153 to move synchronously through the connecting rod 16, and now the two groups of air inlet holes 134 can be opened at the same time. When it is necessary to open three groups of air inlet holes 134, the third group of pressure rods can be pressed counterclockwise along the mounting tube 14. 153, the pressure rod 153 moves through the connecting rod 16 to drive the second group of pressure rods 153 to move synchronously, and the second group of pressure rods 153 move synchronously through the connecting rod 16 to drive the first group of pressure rods 153 to move synchronously. At this time, three groups of air inlet holes 134 can be opened at the same time. Therefore, when multiple groups of air inlet holes 134 need to be opened, it is only necessary to press the corresponding pressure rod 153, which is convenient for quickly adjusting the number of holes 134 to be opened, and convenient for quickly adjusting the negative pressure value in the sputum culture bottle 10 to the negative pressure value required for subglottic suction according to needs, and the adjustment is fast.

[0057] When the blocking rod 151 needs to be released, the connecting shaft 192 is driven downward by the pull ring 191. The connecting shaft 192 moves downward, driving the conical pressure head 197 to move downward and squeeze the second spring 193. The conical pressure head 197 moves downward to squeeze the locking rod 195, causing the locking rod 195 to rotate and compress the third spring 194 again. At this time, the locking rod 195 rotates and drives the first wedge block 196 to rotate, separating the first wedge block 196 from the second wedge block 152. When the first wedge After the wedge-shaped block 196 is separated from the second wedge-shaped block 152, the reaction force of the first spring 154 can make the pressure rod 153 move upward. The upward movement of the pressure rod 153 can drive the shielding rod 151 to move upward to seal and block the air inlet 134 again, thereby adjusting the negative pressure value in the sputum culture bottle 10 back to the negative pressure value required for the suction operation. It is easy to use, and the suction operation and subglottic suction are easy to switch. There is no need to adjust the negative pressure gauge, which is easy to adjust and reduces the risk of causing respiratory mucosal damage and bleeding.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A subglottic suction device, characterized in that: include: A sputum culture bottle (10), wherein the upper end of the sputum culture bottle (10) is provided with a connecting tube (11) and a negative pressure tube (12) communicating with the inner cavity of the sputum culture bottle (10), and a fixing tube (101) communicating with the inner cavity of the sputum culture bottle (10) is provided on the outer peripheral side wall of the sputum culture bottle (10); A connecting assembly (20) is arranged on the fixed pipe (101); An air intake cylinder (13) is connected to the fixed pipe (101) via the connecting assembly (20), the upper and lower ends of the air intake cylinder (13) are both in a sealed state, the inner cavity of the air intake cylinder (13) is an air intake cavity (136), and the outer peripheral side of the air intake cylinder (13) is provided with a plurality of groups of air intake holes (134) in communication with the air intake cavity (136) at intervals along the circumference of the air intake cylinder (13); A mounting cylinder (14) detachably disposed at the lower end of the air inlet cylinder (13); An adjusting assembly (15), wherein the adjusting assembly (15) is provided in a plurality of groups, the plurality of groups of adjusting assemblies (15) corresponding one-to-one to the plurality of groups of air inlet holes (134), the adjusting assembly (15) being movable along the axial direction of the mounting cylinder (14) and being capable of sealing, blocking, or opening the corresponding air inlet holes (134); a locking mechanism, disposed at the lower end of the mounting cylinder (14), for locking the adjusting assembly (15) when the adjusting assembly (15) opens the air inlet hole (134); The adjustment assembly (15) includes a shielding rod (151), a pressure rod (153) and a first spring (154); an open installation cavity (145) is provided at the lower end of the installation cylinder (14); the shielding rod (151) is slidably arranged on the installation cylinder (14) and seals and blocks the corresponding air inlet (134); the pressure rod (153) is slidably arranged on the installation cylinder (14), and one end of the pressure rod (153) is connected to the bottom end of the shielding rod (151), and the other end of the pressure rod (153) extends outside the installation cylinder (14); the sliding of the pressure rod (153) enables the shielding rod (151) to be engaged with the locking mechanism and open the air inlet (134); the first spring (154) connects the installation cylinder (14) and the pressure rod (153) and is used to drive the pressure rod (153) to reset; The locking mechanism comprises a mounting post (18) and a locking assembly (19); the mounting post (18) is detachably arranged at the opening of the mounting cavity (145); a mounting ring (181) is coaxially arranged at the upper end of the mounting post (18); and the locking assembly (19) can engage all the shielding rods (151) and release all the shielding rods (151) at the same time. The locking assembly (19) includes multiple sets of locking rods (195), connecting shafts (192), conical pressure heads (197) and second springs (193); the inner side wall of the mounting ring (181) is provided with multiple sets of fixed shafts (183) at intervals along the circumference of the mounting cylinder (14); the middle parts of the multiple sets of locking rods (195) can be rotatably connected to the multiple sets of fixed shafts (183); the upper ends of the locking rods (195) are provided with first wedge-shaped blocks (196); and the multiple sets of shielding rods (151) are all provided with second wedge-shaped blocks (152) that can be hooked with the first wedge-shaped blocks (196). The conical pressure head (197) is slidably arranged on the mounting column (18) via a connecting shaft (192); a pull ring (191) is provided at the end of the connecting shaft (192) extending outside the mounting column (18); the pull ring (191) is pulled downward to drive the conical pressure head (197) to squeeze multiple groups of the locking rods (195) at the same time, so that the second wedge-shaped block (152) is separated from the first wedge-shaped block (196); the second spring (193) connects the conical pressure head (197) and the mounting column (18) and is used to drive the conical pressure head (197) to reset.

2. A subglottic suction device according to claim 1, characterized in that: The lower end of the mounting tube (14) is provided with an open mounting cavity (145), and a plurality of through grooves (143) communicating with the mounting cavity (145) are provided on the top plate of the mounting tube (14). The lower end of the shielding rod (151) is located in the mounting cavity (145), and the upper end of the shielding rod (151) can be sealed through the through groove (143) and the lower end of the mounting tube (14), and extend into the air inlet cavity (136) and seal the air inlet hole (134) corresponding thereto. The lower end of the shielding rod (151) can be snapped onto the locking mechanism, and the outer peripheral side of the mounting tube (14) is spaced along the circumference of the mounting tube (14). The guide grooves (142) are connected to the installation cavity (145) and are separated by a plurality of openings. The pressure rod (153) is arranged in the guide groove (142) and can be moved axially along the installation cylinder (14). The bottom end of the pressure rod (153) is provided with a positioning shaft (155). The bottom surfaces of the plurality of groups of guide grooves (142) are provided with positioning holes (141). The lower end of the positioning shaft (155) can be slidably passed through the positioning hole (141). The first spring (154) is sleeved on the positioning shaft (155). The two ends of the first spring (154) respectively abut against the bottom surfaces of the pressure rod (153) and the guide groove (142).

3. A subglottic suction device according to claim 2, characterized in that: The adjustment assembly (15) further includes a plurality of groups of connecting rods (16); a group of connecting rods (16) is provided between each two adjacent groups of pressure rods (153), and the head end of the connecting rod (16) is placed on one group of pressure rods (153), and the tail end of the connecting rod (16) is fixedly connected to the other group of pressure rods (153).

4. A subglottic suction device according to claim 1, characterized in that: The locking assembly (19) is disposed within the mounting post (18) and the mounting ring (181).

5. A subglottic suction device according to claim 4, characterized in that: The lower ends of the plurality of shielding rods (151) are provided with second wedge-shaped blocks (152), and the second wedge-shaped blocks (152) can be hooked on the first wedge-shaped blocks (196) when moving downward. The lower end of the locking rod (195) is provided with a third spring (194), and the free end of the third spring (194) can abut against the inner side wall of the mounting ring (181). A through hole (182) penetrating the mounting column (18) is provided on the mounting column (18) along the axial direction of the mounting column (18), and the connecting shaft (192) can be slidably penetrated in the through hole (182). One end of the connecting shaft (192) is located in the mounting ring (181) and is detachably connected to the conical pressure head (197). The conical pressure head (197) can simultaneously squeeze multiple groups of the locking rods (195) and compress and shrink multiple groups of the third springs (194). The other end of the connecting shaft (192) extends to the outside of the mounting column (18). The second spring (193) is sleeved on the connecting shaft (192), and the two ends of the second spring (193) respectively abut against the bottom end of the conical pressure head (197) and the upper end of the mounting column (18).

6. A subglottic suction device according to claim 1, characterized in that: The connecting assembly (20) includes a fixing ring (203) and an internal threaded sleeve (205); the fixing ring (203) is sleeved on the fixing tube (101); the inner side wall of the fixing ring (203) is provided with multiple groups of positioning blocks (202) at intervals; the outer side wall of the fixing tube (101) is provided with multiple groups of positioning grooves (1012) corresponding to the multiple groups of positioning blocks (202); the multiple groups of positioning grooves (1012) are provided along the axial direction of the fixing tube (101); the multiple groups of positioning blocks (202) can be slidably clamped in the multiple groups of positioning grooves (1012); the end of the internal threaded sleeve (205) close to the fixing ring (203) is spaced apart. A plurality of first spring clip buckles (204) are provided, a fixed slot (201) is provided on the outer peripheral side of the fixing ring (203) along the circumference of the fixing ring (203), and the plurality of first spring clip buckles (204) can be axially rotated around the fixing ring (203) and are arranged in the fixed slot (201), a plug-in tube (131) communicating with the air intake cavity (136) is provided on the peripheral side of the air intake cylinder (13), an external threaded portion (132) is provided on the peripheral side of the plug-in tube (131), the plug-in tube (131) can be inserted into the fixing tube (101), and the internal threaded sleeve (205) can be threadedly connected to the external threaded portion (132).

7. A subglottic suction device according to claim 6, characterized in that: A sealing ring (21) is sleeved on the outer circumference of the plug-in tube (131), and multiple groups of the sealing rings (21) are arranged at intervals along the axial direction of the plug-in tube (131). The multiple groups of the sealing rings (21) are used for sealing between the plug-in tube (131) and the fixed tube (101).

8. The subglottic suction device according to claim 6, characterized in that: The fixing pipe (101) is provided with a fixing groove (1011) at an end portion close to the air intake cylinder (13), and the external threaded portion (132) is provided with a fixing block (135) at an end portion close to the fixing pipe (101), and the fixing block (135) can be inserted into the fixing groove (1011).

9. The subglottic suction device according to claim 1, characterized in that: Multiple groups of second spring clip buckles (144) are arranged at intervals on the circumferential side of the upper end of the mounting cylinder (14), and multiple groups of spring clip slots (133) are provided on the circumferential side of the lower end of the air intake cylinder (13) corresponding to the multiple groups of second spring clip buckles (144), and the multiple groups of second spring clip buckles (144) are respectively clamped in the multiple groups of spring clip slots (133).

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